Ännu en sån sak som egentligen bara sparas för mitt egna uppslagsverk =)
Evolution of the LS Series – OBS USA. Så allt stämmer väl inte in på EU.
1990
http://www.lexls.com/info/ls400.html – Introduction of the First Generation LS400 Series I.
– Top speed = 149.1 mph; 0-60 = 8.2 seconds; 0-400m = 15.8 seconds.
1991
– Improved emissions.
– Front brake calipers were upgraded from single to twin piston for better performance.
– Key-off operation function was added to the power windows and moon roof.
– Daytime running light system was added for all Canadian models.
– Larger switch on the key for increased keyless entry ease of use.
– Conventional flat horn was replaced by a spiral horn to improve sound.
– Top speed = 149 mph; 0-60 = 8.2 seconds; 0-400m = 15.8 seconds.
1992
– Basically there were no changes. 1992 LS400’s are virtually the same as 1991 LS400’s.
– The daytime running light system for Canadian models was slightly changed so that they illuminate at 80-85% of capacity instead of full.
– Top speed = 149 mph; 0-60 = 8.2 seconds; 0-400m = 15.8 seconds.
1993
– The LS400 Series II debuts with more than 50 changes, many as a direct response to dealer and customer requests.
– Slightly refined front grille. The vertical bars are less prominent so the horizontal lines show more.
– Headlight beam pattern improved.
– Front lower spoiler and rear undercover colors now matched with vehicle body color.
– Side body molding thickness was increased and larger rocker moldings with body matching color.
– Outside rear view mirror visors were slightly elongated and mirror adjustability increased.
– Larger 16″ wheels with a new design.
– Leather door trim inserts became standard.
– Front roof headliner, sun visors, and center visor were changed to fabric.
– Steering wheel was slightly changed and the overdrive switch on the shifter was moved to the side.
– Minor stereo improvements.
– Aluminum radiator.
– EGR and EVAP systems now controlled by the engine ECU.
– A secondary air injection system was added to the emission control system on California spec models.
– Fluid temperature sensor was added to the transmission.
– Revised differential mounts.
– Bigger brakes and electronic brake-pad wear warning system added.
– Front and rear suspension improvements for better ride comfort.
– Steering shaft increased and steering characteristics were revised.
– Automatic light control system added.
– Illuminated entry system revised.
– Instrument cluster revised. Illumination adjusting system, electronic odometer, and exterior temperature gauge added. Warning lights were added and relocated.
– R134a became standard in the air conditioning system. A clean-air filter with odor-removing function was added.
– Keyless entry system revised.
– Lumbar support and vertical adjustments were added to the front passenger seat.
– Front passenger SRS air bag added.
– Seat belt pretensioner functions were added to the front belts.
– Cruise control system revised.
– Trunk lock improved.
– A few other minor improvements….
– Top speed = 149 mph; 0-60 = 7.9 seconds; 0-400m = 15.8 seconds.
1994
– Basically there were no changes. 1994 LS400’s are virtually the same as 1993 LS400’s.
– An EGR gas temperature sensor was now used on all models to conform to OBD-I requirements.
– The daytime running light system for Canadian models was slightly changed so that it now only operated the low-beam headlights.
– Top speed = 149 mph; 0-60 = 7.9 seconds; 0-400m = 15.8 seconds.
1995
http://www.lexls.com/info/ls400gen2.html
– Introduction of the completely redesigned Second Generation LS400 Series III.
– Basically the second gen LS is bigger, slightly more powerful, and a new design all around. Since it was completely redesigned pretty much everything looks different on both the interior and exterior. Take a look at the pictures above to note these changes. I will list some less visible differences below….
– The 1UZ-FE engine was improved in several areas. Headers were changed from the single type to semi-dual type for better exhaust flow.
– Bigger and better brakes. The front brakes were changed from a single-sided 2-piston type to an opposed-cylinder 4-piston type.
– A few suspension improvements.
– LS400 emblem added to the trunk.
– Body is more rigid and made of anti-corrosion steel.
– More sound deadening to further reduce engine and road noise.
– The power tilt and power telescopic steering column became standard.
– 4-headlight system.
– Light auto turn-off system now standard.
– Automatic light control system became standard.
– Headlight cleaner became standard on Canadian models.
– Vehicle-speed sensing control was added to the intermittent wiper with an adjustable time function.
– 3-jet type windshield washer nozzles.
– A one-touch slide-open function was added to the moonroof (optional) and the tilt-up reminder function was discontinued.
– A windshield heater became standard for Canadian models.
– Dual airbags became standard.
– Space for a portable first-aid kit designed into the driver’s side front seat.
– Rear armrest now equipped with a push-open type cup holder.
– A 3-point seat belt for the rear center seat was added for the first time on a Lexus.
– A front passenger side temperature control switch was added to offer dual front climate zones for better control.
– The electronic odometer was moved to the bottom center of the instrument cluster and the warning lights were lined up in a straight line on the bottom of the cluster. The temperature gauge is now separate and not in the instrument cluster.
– The optional CD changer was now mounted into the upper glove box.
– A trunk lid opener button and panic button were added to the wireless door lock system remote.
– And more…
– Top speed = 149 mph; 0-60 = 7.7 seconds; 0-400m = 15.2 seconds.
1996
– Basically there were no changes. 1996 LS400’s are virtually the same as 1995 LS400’s.
– A diagnosis function was added for the evaporative emission control system.
– Slight change in the cruise control system.
– Top speed = 149 mph; 0-60 = ? seconds; 0-400m = 15.2 seconds.
1997
– Lexus and Coach, the renowned manufacturer of distinguished leather products, announce the production of a distinctive limited edition LS400 sedan.
– A power outlet was added in the lower center console box to enable accessories like a cell phone.
– The engine control system was partially changed.
– An engine immobilizer was added to improve the vehicle’s theft prevention performance.
– ABS and TRAC actuators were changed.
– Reinforcements were added around the cabin to improve body rigidity.
– Air conditioning system slightly refined.
– SRS front side airbags were added into the front seatbacks.
– Top speed = 149 mph; 0-60 = 7.7 seconds; 0-400m = 15.2 seconds.
1998
– The LS400 Series IV debuts with many improvements.
– Redesigned front end. Changes to the hood, fenders, grille, front bumper, and front lights.
– Discharge headlight became standard equipment on Canadian models and optional equipment for US models.
– Slightly refined rear lights.
– Outer rearview mirror was changed to reduce wind noise.
– Wheels were redesigned and now have 5 spokes.
– A retractable headrest was added to the rear center seat.
– Another rear personal light was added to the rear quarter pillar area.
– A leather & wood steering wheel and wood shifter were introduced as optional equipment.
– VVT-i (variable valve timing-intelligent) system and the ACIS (acoustic control induction system) was adopted in the 1UZ-FE engine to improve fuel economy, improve performance, and reduce emissions. ETCS-i (electronic throttle control system) was also added to ensure excellent controllability of the vehicle and improve its comfort. Worlds first production V8 engine with VVT-i.
– 290 hp @ 6000 rpm and 300 ft-lbs of torque @ 4000 rpm.
– The 4-speed automatic transmission was replaced by a 5-speed transmission.
– Propeller shaft was slightly changed.
– The differential gear ratio was reduced to improve fuel economy. 2 mounts were used on both the front and rear of the differential to further reduce vibration and noise.
– The VSC (Vehicle Skid Control) system was added.
– Suspension and brakes slightly revised.
– The hydraulic circuit of the power steering system changed.
– More work on the body and sound dampening material to further reduce vibration and noise.
– An automatic headlight beam level control system was added to models with HID headlights.
– A headlight off delay system was added to keep the headlights on for a set period of time after occupants exit the car.
– A multi-information display was added to the instrument cluster to display vehicle data and warnings. The design of the shift indicator was changed.
– An automatic recirculation system was added to automatically switch the air inlet mode in accordance with the level of concentration of harmful elements in the air.
– An all-door one-touch auto up and down function was added.
– A jam protection function was added to prevent a person’s hand or other object from becoming caught in the door window.
– A function to operate all windows was added to the door lock remote control.
– Changes were made to the engine immobiliser system. The starter cutoff function was discontinued. The theft deterrent system was slightly changed.
– The construction and operation of the inflator for the front passenger air bag was changed.
– A garage door opener was added to the map lamp area.
– A seat belt warning for the front passenger was added. The display method for the seat belt warning system changed from the illumination type to the flashing type.
– A navigation system was offered for the first time as an option.
– Some changes to the audio system. A diversity rear window imprinted antenna system started to be used.
– Top speed = 149 mph; 0-60 = 6.3 seconds; 0-400m = 14.9 seconds.
1999
– The wood shift knob became standard equipment.
– A few engine refinements.
– Steering column was slightly refined.
– The daytime running light system became standard equipment. This is basically the same system the Canadian models had been using for years.
– A blank mode was added for the instrument cluster where no cruise information appears.
– A change was made to the reverse shift function linked to the outer rear view mirrors.
– Top speed = 149 mph; 0-60 = 6.3 seconds; 0-400m = 14.9 seconds.
2000
– Three tether anchor brackets for mounting the CRS (child restraint system) are provided.
– ORVR (on-board refueling vapor recovery) system was added to the engine.
– A brake assist system was added to ensure for enough braking force in emergencies.
– The seat memory system was slightly changed.
– Top speed = 149 mph; 0-60 = 6.3 seconds; 0-400m = 14.9 seconds.
2001
http://www.lexls.com/info/ls430.html
– Introduction of the completely redesigned Third Generation LS430.
– Basically the third gen LS even better…slightly more powerful and a new design all around. Since it was completely redesigned pretty much everything looks different on both the interior and exterior. Take a look at the pictures above to note these changes. I will list some less visible differences below….
– Intelligent front air conditioning swing register vents.
– A solar sensor for rear air conditioning control was available as an option. A cool box in the back of the rear center armrest came with this option, it used cool air from the rear A/C.
– The audio system included a tape player and a in-dash 6-disc CD changer under the head unit as standard equipment.
– For the first time, the Mark Levinson audio system was available as an option. It was possible to include this option with the navigation system (optional).
– The navigation system (optional) was improved.
– The adaptive laser cruise control system was available as an option.
– A park assist system was available as an option.
– The outer rear view mirrors are linked to a number of systems and include outer foot lights.
– Automatic wiper system.
– A door closer system is available as an option.
– Power trunk closer.
– Automatic door look control system. All doors lock at once when the shifter is moved out of P.
– Rear sunshade is standard for Canadian models and an option for US models. Rear door window manual sunshades were available as an option.
– 4-link hinges are used on the trunk door to provide more cargo room.
– Lexus Link was available as an option.
– The 3UZ-FE 4.3 liter Four-Cam, 32-valve V8 engine was now used.
– Side front and rear curtain SRS airbags.
– Front and rear seat belts now have pretensioners with force limiters.
– Laminated door glass was available as an option. This prevents shattering in the event of an accident and also reducing UV rays by 100% which helps preserve the leather interior.
– Improved safety characteristics of the body.
– Rear brake calipers are now 2 piston.
– Front and rear seat heater system available.
– Phosphorescent emergency trunk release handle
– Plenty of other changes too…
– Top speed = 130 mph; 0-60 mph = 6.3 seconds; 0-400m = 14.7 seconds.
2002
– The one-motion open function was added to the passenger’s side.
– A dual stage SRS airbag system was adopted for the driver’s airbag.
– A compass display was added in the inner rear view mirror on Canadian models without GPS voice navigation systems.
– A GPS voice navigation system was added to Canadian models as optional equipment.
– A voice recognition system was added in the audio system to enable the radio, tape player, and CD changer.
– Top speed = 130 mph; 0-60 mph = 6.3 seconds; 0-400m = 14.7 seconds.
2003
– 17″ wheels became standard equipment.
– The front stabilizer bar was changed from the solid type to the hollow type.
– Top speed = 130 mph; 0-60 mph = 6.3 seconds; 0-400m = 14.7 seconds.
2004
– The LS430 Series II debuts with many changes.
– Redesigned front bumper, grille, hood, fenders, headlights, and fog lights.
– Redesigned rear bumper, trunk door, license plate garnish, and brake lights. An exhaust baffle was added.
– The 5-speed transmission was replaced by a new 6-speed transmission.
– The differential was improved.
– SRS front driver and passenger side knee airbags added.
– Smart key system.
– Tire pressure warning system.
– Climate control system for the rear seat.
– Top speed = 130 mph; 0-60 mph = 6.2 seconds; 0-400m = 14.5 seconds.
+++++++++++
The Lexus LS Chronology
http://www.lexls.com/info/lschronology.html
LS Milestones
* Fall 1984
The ”F1” project is well underway. ”F1” is Toyota’s code for flagship luxury car of the highest order. Shoiji Jimbo and Ichiro Suzuki head a large engineering team to develop this ultra-important new car.
* May 1985
Lexus conducts its first study of the American market with a team headed by Jimbo attending focus groups and interviewing dealers in major markets. A separate five-person team moves to Laguna Beach, Calif. to study lifestyles and integrate design concepts suited for American customers.
* July 1985
The first of 450 running prototypes is built, representing the work of 60 designers, 24 engineering teams, 1,400 engineers, 2,300 technicians and 220 support workers.
* May 1986
Tests are conducted on the Autobahn in Germany.
* September 1986
Ten months of extensive evaluation on American roads begins, resulting in numerous improvements in line with the U.S. environment and customer needs.
* May 1987
The final design of the F1 is approved after eight previous presentations to management – far more than customary.
* August 1988
Roger Penske, the renowned racing team owner and soon-to-be Lexus dealer, goes to Japan to test-drive the F1.
* November 1988
The F1 is designated the LS 400, ”LS” meaning Luxury Sedan, and ”400” for the 4.0-liter V8 engine.
* January 1989
The LS 400 makes its American debut at the North American International Auto Show (NAIAS) in Detroit and the Los Angeles Auto Show.
* May 1989
The first production LS 400 rolls off the assembly line at Lexus’ Tahara plant in Japan.
* September 1989
The LS 400 goes on sale to the public and is very well received. In the first month 2,919 LS 400s are sold.
* December 1989
Lexus initiates a special service campaign. Although aware of only one consumer contact regarding a cruise control malfunction and several complaints of stoplight housing distortion, Lexus elects to recall all 8,000 LS 400s sold to check items. Dealers contact owners individually and quickly make repairs. Rather than being viewed negatively, Lexus is credited with setting a new standard in personalized service.
* September 1992
A ”freshened” LS 400 debuts with more than 50 changes, many as a direct response to dealer and customer requests.
* November 1994
Completely redesigned second generation 1995 LS 400 goes on sale.
* March 1997
Lexus and Coach, the renowned manufacturer of distinguished leather products, announce the production of a distinctive limited edition LS 400 sedan.
* September 1997
Lexus introduces a redesigned LS 400 featuring Variable Valve Timing with Intelligence (VVTi) engine for higher performance, dozens of additional features and freshened styling. Despite the numerous upgrades the LS price remains the same as the previous year, enhancing its overall value.
* January 2000
Lexus unveils the 2001 LS 430 flagship sedan at the NAIAS in Detroit.
* October 2000
The LS 430, the third generation Lexus flagship sedan, goes on sale. In addition to upgrading its V8 to 4.3 liters, the new vehicle sets a new benchmark for luxury and technology. Features include Intuitive Park Assist, Dynamic Laser Cruise Control, heated/cooled front seats and a beverage cooler between the two rear seats. The 2001 LS 430 also offered a Mark Levinson sound system, which made Lexus the first and only automaker to offer an OEM mobile audio system designed by Levinson.
* September 2003
The LS 430 debuts as a thoroughly revised model for 2004, with exterior restyling, a new 6-speed automatic transmission, and additional safety and luxury features. The three generations of Lexus LS sedans have garnered more awards for quality than any other luxury car and have won the J.D. Power and Associates Vehicle Dependability Study every year that they have been eligible.
Awards and Recognition
* January 1990
The LS 400 finishes first in all categories, including overall satisfaction, in Car & Driver’s 1990 New Car Buyers study.
* February 1990
Motoring Press Association names LS 400 ”Best Imported Car of the Year.”
* March 1990
The LS 400 is awarded the ”Best Luxury Car” title in MotorWeek’s Drivers’ Choice Awards.
* July 1990
In J.D. Power and Associates Initial Quality Study (IQS), the LS 400 ranks fourth overall and second in its segment during its first year of eligibility.
* May 1992
LS 400 is named the most problem-free vehicle in J.D. Power and Associates IQS.
* June 1992
LS 400 tops J.D. Power and Associates Customer Satisfaction Index (CSI), which gauges satisfaction after one year of ownership.
* December 1992
Personal Finance lists the LS 400 as the best buy in the $30,000+ category.
* March 1993
American Automobile Association (AAA) names the LS 400 as the best 1993 model in its price range.
* March 1993
Consumer Reports calls the LS 400 ”Benchmark of Quality.”
* May 1993
Lexus sweeps the J.D. Power and Associates IQS with the LS 400 and SC 400/300 finishing first and second, respectively, with the fewest reported problems. Lexus was once again the top nameplate in the study.
* June 1993
Robb Report names LS 400 the ”Best Import Car for 1993.”
* February 1994
LS 400 is named ”Best Overall Value of the Year” in the over $40,000 luxury class by IntelliChoice.
* May 1994
LS 400 tops the J.D. Power and Associates IQS again with an astoundingly low 32 problems per 100 vehicles.
* December 1994
The all-new LS 400 is designated ”The Best of What’s New” by Popular Science.
* January 1995
Lexus LS 400 receives Popular Mechanics’ ”1995 Design & Engineering Award.”
* March 1995
In J.D. Power and Associates Vehicle Dependability Index (VDI_, the LS 400 registers the fewest problems of all individual vehicles in the last 12 months after five years of ownership.
* May 1995
Strategic Vision, a consulting and research firm measuring how consumers rate their cars in terms of least troublesome and most pleasurable ownership experiences, finds the LS 400 to be the ”Best of the Best” in the import luxury car category.
* June 1996
Toyota Motor Corporation’s Tahara plant, which builds the Lexus LS 400, captures the J.D. Power and Associates ”Gold Plant Award” among Asian manufacturing facilities.
* February 1997
IntelliChoice names the LS 400 the ”Best Overall Value” in the Luxury Car class.
* April 1997
The LS 400 sedan is ranked No. 1 in the Luxury segment of the J.D. Power and Associates IQS. The LS also records the highest score among all cars and trucks in the study.
* June 1998
The LS 400 again tops the Premium Luxury Car segment in J.D. Power and Associates’ IQS. The LS earns the best score of any vehicle in the study, an honor it has achieved in five out of six years.
* September 1998
LS 400 earns the title of Most Appealing Premium Luxury Car in the J.D. Power and Associates APEAL Study.
* May 1999
The LS 400 receives top honors in the revised J.D. Power and Associates IQS.
* May 2000
Once again the LS 400 comes out on top in J.D. Power and Associates IQS.
* September 2000
Lexus LS 430 receives the 2001 Design & Engineering Award from Popular Mechanics.
* February 2001
Automobile Magazine names the LS 430 an ”All Star” in the Best Luxury Sedan Over $40,000 category.
* April 2001
Consumer Guide names LS 430 a ”Best Buy.”
* May 2001
Yet another top ranking for the LS 430 in the J.D. Power and Associates IQS with the fewest problems of any vehicle on the market.
* October 2001
LS 430 is named ”Most Appealing Premium Luxury Sedan” in J.D. Power and Associates APEAL study.
* January 2002
Edmunds.com names LS 430 ”Editors’ Most Wanted Vehicles – Large Sedan Under $55,000.”
* March 2002
LS 430 named ”Finest Luxury Sedan in America” by Automotive Marketing Consultants Inc. (AMCI).
* April 2002
LS 430 named ”Top Performer in Premium Luxury” car segment by the AutoPacific Vehicle Satisfaction Score (VSS).
* May 2002
The LS 430 is the highest-ranked vehicle overall, as well as first in its segment, for the sixth consecutive year in J.D. Power and Associates IQS. Power also awarded the LS 430’s manufacturing facility, the Tahara Plant in Japan, the Worldwide Platinum Plant Award. For the fourth year in a row, the Platinum Plant Award has been given to a Lexus factory.
* October 2002
Edmunds.com names LS 430 ”Consumers’ Most Wanted Vehicles – Large Sedan Under $55,000.”
* November 2002
LS 400 is the highest ranked vehicle in the Premium Luxury Car segment in the J.D. Power and Associates Vehicle Dependability Index.
* January 2003
LS 430 is named ”2002 Prestige Luxury Car” in R.L. Polk & Co. Automotive Awards.
* February 2003
LS 430 awarded the Automotive Market Environmental Superiority (AMES) award in the Premium and Luxury Car category. The AMES awards were created to help encourage customers to purchase AMES awarded vehicles to assist in the reduction of fuel consumption and emission of greenhouse gases.
* May 2003
For the seventh consecutive year, the LS 430 ranked first in the 2003 J.D. Power and Associates Initial Quality Study (IQS). On the manufacturing side, J. D. Power also awarded the LS 430’s manufacturing facility, the Tahara Plant in Japan, the worldwide Platinum Plant Award for the second consecutive year.
* July 2003
The LS 430 is the highest-ranked vehicle in the Most Dependable Premium Luxury Vehicle category of the 2003 J.D. Power and Associates Vehicle Dependability Study (VDS), for the ninth consecutive year.
* October 2003
The LS 430 is the highest ranked vehicle in the Premium Luxury Car segment of 2003 J.D. Power and Associates Automotive Performance Execution And Layout (APEAL) study, and received the highest score of any model surveyed. Since 2001, the LS 430 has been the highest-ranking model in APEAL.
* February 2004
The LS 430 is named IntelliChoice’s ”Best Overall Value” in the Luxury Car segment.
* May 2004
AutoPacific announces the 2004 Vehicle Satisfaction Awards (VSA). The LS 430 registered highest overall satisfaction for a fifth consecutive year.
* June 2004
The LS 430 ranks first in the Premium Luxury Car category of the J.D. Power and Associates 2004 Initial Quality Study.
* June 2004
LS 430 had the second fewest problems of any vehicle in the J.D. Power and Associates.
Uppdaterar med info från http://www.lexls.com/info/lsgenerations.html
Overview
The Lexus LS series has been in production for over 18 years now. Throughout this period of time it has gone through several complete redesigns. A complete redesign is called a ”generation.” Changes in LS generations are very easy to recognize and I will show you the differences shortly. To make things more complicated, there are design changes within the generations.
The changes made within an LS generation are designated as a ”series.” Sometimes the changes were minor and sometimes they were more drastic. What they have in common is that they were not a complete redesign and therefore they cannot be called a generation change. The official Lexus UK website is where we see that Lexus uses the term ”series” to distinguish the changes within a generation.
It is important to note that sometimes minor improvements have been made year-to-year but they are not enough to warrant a designation. For example, the brakes were slightly improved in 1991 but we still refer to a 1991 as a First Generation Series I LS400.
Now that you know the terms you can see why people often get them mixed up. There are currently only four LS generations according to Lexus! It’s pretty easy to see this just by looking at the model numbers, UCF10, UCF20, UCF30, and UCF40. The official Lexus website and Toyota press release site mention that the LS430 is the third generation LS several times (1, 2, 3). The LS460/LS460L is referred to as the fourth generation LS (1).
I have seen that the 2000 LS description says, ”The 1998 LS 400 was the third-generation LS, receiving numerous exterior and interior refinements.” Confused? Well, if you count from the Series II LS400, which was the first refinement of the LS, you will see that the Series IV LS400 is indeed the third time the LS400 received numerous exterior and interior refinements. Also note that third-generation is hyphenated in this quote. In all the other mentions of a generation change on the official Lexus sites you do not see a hyphen. Then take a look at the context; they did not say it was a complete redesign. I think this proves they were referring to the third time the LS400 series was refined. Whoever wrote that description could have made a better word choice in the quoted sentence but it does make sense if you know your LS history. If the 1998 LS was truely the third generation then it would be called the UCF30, but it’s not. In official terms, meaning by looking at the model number, there are currently only four LS generations.
There are four model codes for the three LS generations – the UCF10, UCF20, UCF30, and UCF40. You will also here about the UCF11, UCF21, UCF31, and UCF31 model codes. These are LS model codes for markets other than the USA and Canadian markets (and possibly a few others I don’t know about). Below I have listed the model codes next to the LS generation and series so you can understand what I’m talking about.
First Generation – LS400 = UCF10/11
Series I: 1990 – 1992
Series II: 1993 – 1994
Second Generation – LS400 = UCF20/21
Series III: 1995 – 1997
Series IV: 1998 – 2000
Third Generation – LS430 = UCF30/31
Series I: 2001 – 2003
Series II: 2004 – 2006
Fourth Generation – LS460/LS460L = UCF40/41
Series I: 2007 – Unknown
Visual Evolution of the LS Series
In this section I have put together a collection of photos for each LS series. This way you can easily see how the LS series has evolved throughout the years. In the next section of this article you can find a very detailed list of changes throughout the years.
If you click on a thumbnail a larger version the picture will pop up in a new window. By clicking ”next” in the window you will advance to the next image in the table. Side by side comparisons can be done by clicking two thumbnails. I tried to find similar shots for comparison but some aren’t perfect.
UCF10 I
UCF10 II
UCF20 III
UCF20 IV
UCF30 I
UCF30 II
UCF40 I
Evolution of the LS Series
1990
– Introduction of the First Generation LS400 Series I.
– Top speed = 149.1 mph; 0-60 = 8.2 seconds; 0-400m = 15.8 seconds.
1991
– Improved emissions.
– Front brake calipers were upgraded from single to twin piston for better performance.
– Key-off operation function was added to the power windows and moon roof.
– Daytime running light system was added for all Canadian models.
– Larger switch on the key for increased keyless entry ease of use.
– Conventional flat horn was replaced by a spiral horn to improve sound.
– Top speed = 149 mph; 0-60 = 8.2 seconds; 0-400m = 15.8 seconds.
1992
– Basically there were no changes. 1992 LS400’s are virtually the same as 1991 LS400’s.
– The daytime running light system for Canadian models was slightly changed so that they illuminate at 80-85% of capacity instead of full.
– Top speed = 149 mph; 0-60 = 8.2 seconds; 0-400m = 15.8 seconds.
1993
– The LS400 Series II debuts with more than 50 changes, many as a direct response to dealer and customer requests.
– Slightly refined front grille. The vertical bars are less prominent so the horizontal lines show more.
– Headlight beam pattern improved.
– Front lower spoiler and rear undercover colors now matched with vehicle body color.
– Side body molding thickness was increased and larger rocker moldings with body matching color.
– Outside rear view mirror visors were slightly elongated and mirror adjustability increased.
– Larger 16″ wheels with a new design.
– Leather door trim inserts became standard.
– Front roof headliner, sun visors, and center visor were changed to fabric.
– Steering wheel was slightly changed and the overdrive switch on the shifter was moved to the side.
– Minor stereo improvements.
– Aluminum radiator.
– EGR and EVAP systems now controlled by the engine ECU.
– A secondary air injection system was added to the emission control system on California spec models.
– Fluid temperature sensor was added to the transmission.
– Revised differential mounts.
– Bigger brakes and electronic brake-pad wear warning system added.
– Front and rear suspension improvements for better ride comfort.
– Steering shaft increased and steering characteristics were revised.
– Automatic light control system added.
– Illuminated entry system revised.
– Instrument cluster revised. Illumination adjusting system, electronic odometer, and exterior temperature gauge added. Warning lights were added and relocated.
– R134a became standard in the air conditioning system. A clean-air filter with odor-removing function was added.
– Keyless entry system revised.
– Lumbar support and vertical adjustments were added to the front passenger seat.
– Front passenger SRS air bag added.
– Seat belt pretensioner functions were added to the front belts.
– Cruise control system revised.
– Trunk lock improved.
– A few other minor improvements….
– Top speed = 149 mph; 0-60 = 7.9 seconds; 0-400m = 15.8 seconds.
1994
– Basically there were no changes. 1994 LS400’s are virtually the same as 1993 LS400’s.
– An EGR gas temperature sensor was now used on all models to conform to OBD-I requirements.
– The daytime running light system for Canadian models was slightly changed so that it now only operated the low-beam headlights.
– Top speed = 149 mph; 0-60 = 7.9 seconds; 0-400m = 15.8 seconds.
1995
– Introduction of the completely redesigned Second Generation LS400 Series III.
– Basically the second gen LS is bigger, slightly more powerful, and a new design all around. Since it was completely redesigned pretty much everything looks different on both the interior and exterior. Take a look at the pictures above to note these changes. I will list some less visible differences below….
– The 1UZ-FE engine was improved in several areas. Headers were changed from the single type to semi-dual type for better exhaust flow.
– Bigger and better brakes. The front brakes were changed from a single-sided 2-piston type to an opposed-cylinder 4-piston type.
– A few suspension improvements.
– LS400 emblem added to the trunk.
– Body is more rigid and made of anti-corrosion steel.
– More sound deadening to further reduce engine and road noise.
– The power tilt and power telescopic steering column became standard.
– 4-headlight system.
– Light auto turn-off system now standard.
– Automatic light control system became standard.
– Headlight cleaner became standard on Canadian models.
– Vehicle-speed sensing control was added to the intermittent wiper with an adjustable time function.
– 3-jet type windshield washer nozzles.
– A one-touch slide-open function was added to the moonroof (optional) and the tilt-up reminder function was discontinued.
– A windshield heater became standard for Canadian models.
– Dual airbags became standard.
– Space for a portable first-aid kit designed into the driver’s side front seat.
– Rear armrest now equipped with a push-open type cup holder.
– A 3-point seat belt for the rear center seat was added for the first time on a Lexus.
– A front passenger side temperature control switch was added to offer dual front climate zones for better control.
– The electronic odometer was moved to the bottom center of the instrument cluster and the warning lights were lined up in a straight line on the bottom of the cluster. The temperature gauge is now separate and not in the instrument cluster.
– The optional CD changer was now mounted into the upper glove box.
– A trunk lid opener button and panic button were added to the wireless door lock system remote.
– And more…
– Top speed = 149 mph; 0-60 = 7.7 seconds; 0-400m = 15.2 seconds.
1996
– Basically there were no changes. 1996 LS400’s are virtually the same as 1995 LS400’s.
– A diagnosis function was added for the evaporative emission control system.
– Slight change in the cruise control system.
– Top speed = 149 mph; 0-60 = ? seconds; 0-400m = 15.2 seconds.
1997
– Lexus and Coach, the renowned manufacturer of distinguished leather products, announce the production of a distinctive limited edition LS400 sedan.
– A power outlet was added in the lower center console box to enable accessories like a cell phone.
– The engine control system was partially changed.
– An engine immobilizer was added to improve the vehicle’s theft prevention performance.
– ABS and TRAC actuators were changed.
– Reinforcements were added around the cabin to improve body rigidity.
– Air conditioning system slightly refined.
– SRS front side airbags were added into the front seatbacks.
– Top speed = 149 mph; 0-60 = 7.7 seconds; 0-400m = 15.2 seconds.
1998
– The LS400 Series IV debuts with many improvements.
– Redesigned front end. Changes to the hood, fenders, grille, front bumper, and front lights.
– Discharge headlight became standard equipment on Canadian models and optional equipment for US models.
– Slightly refined rear lights.
– Outer rearview mirror was changed to reduce wind noise.
– Wheels were redesigned and now have 5 spokes.
– A retractable headrest was added to the rear center seat.
– Another rear personal light was added to the rear quarter pillar area.
– A leather & wood steering wheel and wood shifter were introduced as optional equipment.
– VVT-i (variable valve timing-intelligent) system and the ACIS (acoustic control induction system) was adopted in the 1UZ-FE engine to improve fuel economy, improve performance, and reduce emissions. ETCS-i (electronic throttle control system) was also added to ensure excellent controllability of the vehicle and improve its comfort. Worlds first production V8 engine with VVT-i.
– 290 hp @ 6000 rpm and 300 ft-lbs of torque @ 4000 rpm.
– The 4-speed automatic transmission was replaced by a 5-speed transmission.
– Propeller shaft was slightly changed.
– The differential gear ratio was reduced to improve fuel economy. 2 mounts were used on both the front and rear of the differential to further reduce vibration and noise.
– The VSC (Vehicle Skid Control) system was added.
– Suspension and brakes slightly revised.
– The hydraulic circuit of the power steering system changed.
– More work on the body and sound dampening material to further reduce vibration and noise.
– An automatic headlight beam level control system was added to models with HID headlights.
– A headlight off delay system was added to keep the headlights on for a set period of time after occupants exit the car.
– A multi-information display was added to the instrument cluster to display vehicle data and warnings. The design of the shift indicator was changed.
– An automatic recirculation system was added to automatically switch the air inlet mode in accordance with the level of concentration of harmful elements in the air.
– An all-door one-touch auto up and down function was added.
– A jam protection function was added to prevent a person’s hand or other object from becoming caught in the door window.
– A function to operate all windows was added to the door lock remote control.
– Changes were made to the engine immobiliser system. The starter cutoff function was discontinued. The theft deterrent system was slightly changed.
– The construction and operation of the inflator for the front passenger air bag was changed.
– A garage door opener was added to the map lamp area.
– A seat belt warning for the front passenger was added. The display method for the seat belt warning system changed from the illumination type to the flashing type.
– A navigation system was offered for the first time as an option.
– Some changes to the audio system. A diversity rear window imprinted antenna system started to be used.
– Top speed = 149 mph; 0-60 = 6.3 seconds; 0-400m = 14.9 seconds.
1999
– The wood shift knob became standard equipment.
– A few engine refinements.
– Steering column was slightly refined.
– The daytime running light system became standard equipment. This is basically the same system the Canadian models had been using for years.
– A blank mode was added for the instrument cluster where no cruise information appears.
– A change was made to the reverse shift function linked to the outer rear view mirrors.
– Top speed = 149 mph; 0-60 = 6.3 seconds; 0-400m = 14.9 seconds.
2000
– Three tether anchor brackets for mounting the CRS (child restraint system) are provided.
– ORVR (on-board refueling vapor recovery) system was added to the engine.
– A brake assist system was added to ensure for enough braking force in emergencies.
– The seat memory system was slightly changed.
– Top speed = 149 mph; 0-60 = 6.3 seconds; 0-400m = 14.9 seconds.
2001
– Introduction of the completely redesigned Third Generation LS430.
– Basically the third gen LS even better…slightly more powerful and a new design all around. Since it was completely redesigned pretty much everything looks different on both the interior and exterior. Take a look at the pictures above to note these changes. I will list some less visible differences below….
– Intelligent front air conditioning swing register vents.
– A solar sensor for rear air conditioning control was available as an option. A cool box in the back of the rear center armrest came with this option, it used cool air from the rear A/C.
– The audio system included a tape player and a in-dash 6-disc CD changer under the head unit as standard equipment.
– For the first time, the Mark Levinson audio system was available as an option. It was possible to include this option with the navigation system (optional).
– The navigation system (optional) was improved.
– The adaptive laser cruise control system was available as an option.
– A park assist system was available as an option.
– The outer rear view mirrors are linked to a number of systems and include outer foot lights.
– Automatic wiper system.
– A door closer system is available as an option.
– Power trunk closer.
– Automatic door look control system. All doors lock at once when the shifter is moved out of P.
– Rear sunshade is standard for Canadian models and an option for US models. Rear door window manual sunshades were available as an option.
– 4-link hinges are used on the trunk door to provide more cargo room.
– Lexus Link was available as an option.
– The 3UZ-FE 4.3 liter Four-Cam, 32-valve V8 engine was now used.
– Side front and rear curtain SRS airbags.
– Front and rear seat belts now have pretensioners with force limiters.
– Laminated door glass was available as an option. This prevents shattering in the event of an accident and also reducing UV rays by 100% which helps preserve the leather interior.
– Improved safety characteristics of the body.
– Rear brake calipers are now 2 piston.
– Front and rear seat heater system available.
– Phosphorescent emergency trunk release handle
– Plenty of other changes too…
– Top speed = 130 mph; 0-60 mph = 6.3 seconds; 0-400m = 14.7 seconds.
2002
– The one-motion open function was added to the passenger’s side.
– A dual stage SRS airbag system was adopted for the driver’s airbag.
– A compass display was added in the inner rear view mirror on Canadian models without GPS voice navigation systems.
– A GPS voice navigation system was added to Canadian models as optional equipment.
– A voice recognition system was added in the audio system to enable the radio, tape player, and CD changer.
– Top speed = 130 mph; 0-60 mph = 6.3 seconds; 0-400m = 14.7 seconds.
2003
– 17″ wheels became standard equipment.
– The front stabilizer bar was changed from the solid type to the hollow type.
– Top speed = 130 mph; 0-60 mph = 6.3 seconds; 0-400m = 14.7 seconds.
2004
– The LS430 Series II debuts with many changes.
– Redesigned front bumper, grille, hood, fenders, headlights, and fog lights.
– Redesigned rear bumper, trunk door, license plate garnish, and brake lights. An exhaust baffle was added.
– The 5-speed transmission was replaced by a new 6-speed transmission.
– The differential was improved.
– SRS front driver and passenger side knee airbags added.
– Smart key system.
– Tire pressure warning system.
– Climate control system for the rear seat.
– Top speed = 130 mph; 0-60 mph = 6.2 seconds; 0-400m = 14.5 seconds.
