1998 Lexus GS400 problems & reliability
31 owner complaints filed with NHTSA for the 1998 Lexus GS400. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
9 complaints report injuries (11 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Air Bags | 7 | 23% |
| Seat Belts | 5 | 16% |
| Vehicle Speed Control | 5 | 16% |
| Engine and Engine Cooling | 3 | 10% |
| Service Brakes, Hydraulic | 3 | 10% |
| Structure | 3 | 10% |
| Electrical System | 2 | 6% |
| Service Brakes | 2 | 6% |
| Steering | 2 | 6% |
| Suspension | 2 | 6% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 14 reported components →Complaints by incident year
What owners report
“Tl* the contact owns a 1998 lexus gs400. The contact stated that while the engine was on and the vehicle stopped, the driver lifted off the brake pedal and the vehicle suddenly accelerated at a high rate of speed causing the driver to loose control and crash into a tree. During the incident, the speed exceeded more…”
Vehicle Speed Control · filed May 13, 2019
“I was driving down the street, a rather busy street trying to stop. The lexus would not stop, due to the struts and mounts are broken. Which I learned from sears automotive. The defects interfere with car overall ability to stop properly, it also sways over into the opposite lanes. Because the car wouldn't stop…”
Suspension · filed Mar 5, 2016
“Lexus stuck pedal--I drive a 1998 lexus gs400 which I bought new. When I first bought it, I'd pressed the pedal all the way down("floored it") many times and everything was fine. However in more recent years, I rarely "floored it" . One time last summer, I pushed the pedal all the way down to pass a car and the pedal…”
Vehicle Speed Control · filed May 26, 2010
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- UNINTENDED ENGINE SPEED INCREASE/SA
Defect Petition DP03003 · opened Jul 17, 2003 · closed Sep 23, 2003
Technical service bulletins
69 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1998 Lexus GS400. The 10 most recent:
Lexus Safety Recall and Service Campaign - Technician Certification Requirements 4.13.2022
Safety Recall 22 · Service Bulletin/Repair Instructions · issued Apr 13, 2022
POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Lexus. This information must be kept near the point of vehicle sale and be…
Lexus PRO19-02 - · Service Bulletin/Repair Instructions · issued Jan 12, 2022
Safety Recall and Service Campaign - Technician Certification Requirements
Lexus Safety Re · Service Bulletin/Repair Instructions · issued May 1, 2020
TSB: OBSOLETE NOTICE April 06, 2020: This bulletin is now obsolete. Please see L-SB-0008-20. Replacement Certification Labels and VIN Plates
L-SB-0179-17 Obs · Service Bulletin/Repair Instructions · issued Apr 6, 2020
TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. L-SB-0048-08, PG007-07, PG016-01, PG015-01, PG004-97, PG003-97, PG003-93, PG002-90, L-SB-0048-08, PG007-07, PG016-01…
L-SB-0008-20 · Service Bulletin/Repair Instructions · issued Apr 6, 2020
TSB: Replacement Certification Labels. OBSOLETE NOTICE November 28, 2017: This bulletin is now obsolete. Please see L-SB-0179-17.
L-SB-0048-08 Obs · Service Bulletin/Repair Instructions · issued Dec 5, 2017
TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased.
L-SB-0025-14 · Service Bulletin/Repair Instructions · issued Jul 7, 2015
LSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals…
L-SB-0066-11 Rev · Service Bulletin/Repair Instructions · issued Apr 10, 2015
LSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals…
L-SB-0066-11 Rev · Service Bulletin/Repair Instructions · issued Apr 10, 2015
TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased.
L-SB-0025-14 Rev · Service Bulletin/Repair Instructions · issued Nov 14, 2014
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 1998 Lexus GS400 in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1998 Lexus GS400?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.