Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 12 of 22 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Vehicle Speed Control. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Structure. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
7 crash reports0 fire reports3 injury reports
What owners actually said
22 reports
130,000 miles · Dec 5, 2012
Vehicle Speed ControlCrashInjury
TL* THE CONTACT OWNS A 1999 LEXUS LS400. THE CONTACT STATED THAT WHILE DRIVING 15 MPH, HE APPLIED THE BRAKE DUE TO TRAFFIC. HOWEVER, THE VEHICLE ACCELERATED INDEPENDENTLY AND CRASHED INTO THE REAR OF ANOTHER VEHICLE. THE CRASH CAUSED DAMAGE TO BOTH VEHICLES AS WELL AS AN INJURED KNEE OF THE DRIVER OF THE VEHICLE THAT WAS STRUCK.…
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TL* THE CONTACT OWNS A 1999 LEXUS LS400. THE CONTACT STATED THAT WHILE DRIVING 15 MPH, HE APPLIED THE BRAKE DUE TO TRAFFIC. HOWEVER, THE VEHICLE ACCELERATED INDEPENDENTLY AND CRASHED INTO THE REAR OF ANOTHER VEHICLE. THE CRASH CAUSED DAMAGE TO BOTH VEHICLES AS WELL AS AN INJURED KNEE OF THE DRIVER OF THE VEHICLE THAT WAS STRUCK. THE FAILURE HAD RECURRED NUMEROUS TIMES. THE DEALER WAS NOTIFIED AND HE WAS INFORMED THE THROTTLE BODY WOULD PROBABLY NEED TO BE REPLACED. ALSO, HE WAS INFORMED THAT DUE TO THE TYPE OF FAILURE HE WOULD HAVE TO CONTACT THE MANUFACTURER. THE MANUFACTURER WAS NOTIFIED AND INFORMED THE CONTACT THAT THE LEGAL DEPARTMENT WOULD HAVE TO BE NOTIFIED BUT OFFERED NO OTHER ASSISTANCE. THE FAILURE MILEAGE WAS 130,000 AND CURRENT MILEAGE WAS 145,000. UPDATED 02/19/13
NHTSA ODI #10487438
100,000 miles · Sep 1, 2010
Structure
TL*THE CONTACT OWNS A 1999 LEXUS LS400. THE CONTACT STATED THAT WHILE WORKING UNDER THE HOOD IT STARTED CLOSING CREATING A SAFETY HAZARD. THE VEHICLE WAS REPAIRED BY A LOCAL MECHANIC. TOYOTA WAS NOT CONTACTED. THE VIN WAS NOT AVAILABLE. THE FAILURE MILEAGE WAS APPROXIMATELY 100,000. THE CURRENT MILEAGE WAS 120,000.
NHTSA ODI #10353316
Mileage unknown · Jun 25, 2010
Electrical System
OUR 1999LS400 LEXUS IS EXPERIENCING MALFUNCTIONS WITH THE ELECTRONICS IN THE DASH. THE ODOMETER AND THE SPEEDOMETER ARE WORKING INTERMITTENTLY. LEXUS WANTS 1200.00 TO PULL OUT DASH AND SEND AWAY TO REPAIR. I AM CONCERNED THIS IS A HUGE SAFETY ISSUE. I DON'T KNOW WHOSE REPLACING WHAT AND ARE THEY CERTIFIED LEXUS MECHANICS??? …
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OUR 1999LS400 LEXUS IS EXPERIENCING MALFUNCTIONS WITH THE ELECTRONICS IN THE DASH. THE ODOMETER AND THE SPEEDOMETER ARE WORKING INTERMITTENTLY. LEXUS WANTS 1200.00 TO PULL OUT DASH AND SEND AWAY TO REPAIR. I AM CONCERNED THIS IS A HUGE SAFETY ISSUE. I DON'T KNOW WHOSE REPLACING WHAT AND ARE THEY CERTIFIED LEXUS MECHANICS??? ARE THESE EARLY MODEL LS400'S HAVING ELECTRONICS PROBLEMS OR IS THIS JUST A SINGLE CASE? PLEASE LET ME KNOW. *TR
NHTSA ODI #10339955
91,080 miles · Mar 12, 2010
Engine And Engine CoolingVehicle Speed Control
I AM REPORTING THIS BECAUSE IT MIGHT PROVIDE A CLUE TO THE TOYOTA RACING ENGINE PROBLEM. ON EACH OF TWO DAYS BEFORE I TOOK MY 1999 LEXUS 400 TO THE DEALER FOR REPAIRS, THE ENGINE WOULD RACE AT AN ESTIMATED 4,000+ RPMS AND EMITTED A GRINDING SOUND AS THE CAR WAS STARTED. AFTER TURNING OFF THE ENGINE WITH THE KEY, THE C…
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I AM REPORTING THIS BECAUSE IT MIGHT PROVIDE A CLUE TO THE TOYOTA RACING ENGINE PROBLEM. ON EACH OF TWO DAYS BEFORE I TOOK MY 1999 LEXUS 400 TO THE DEALER FOR REPAIRS, THE ENGINE WOULD RACE AT AN ESTIMATED 4,000+ RPMS AND EMITTED A GRINDING SOUND AS THE CAR WAS STARTED. AFTER TURNING OFF THE ENGINE WITH THE KEY, THE CAR WOULD RESTART WITHOUT A PROBLEM. STRANGELY, THE DEALER DID NOT RECORD THIS PARTICULAR COMPLAINT, BUT STATED THAT DIAGNOSIS REVEALED THAT STARTER WAS FAILING. I WAS CHARGED $990 FOR REPLACEMENT AND REPAIRS. I COULD NOT GET A SATISFACTORY ANSWER AS TO WHY A FAULTY STARTER WOULD CAUSE THE ENGINE TO RACE. I HAVE DRIVEN THE CAR OVER 10,000 MILES SINCE THEN WITHOUT A PROBLEM. *TR
NHTSA ODI #10319258
90,000 miles · Mar 1, 2010
Electrical System
TL*THE CONTACT OWNS A 1999 LEXUS LS400. WHEN THE CONTACT STARTED THE VEHICLE SHE NOTICED THAT THE DASHBOARD PANEL WOULD NO LONGER FUNCTION. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHERE THE CONTACT WAS INFORMED THAT THE ENTIRE DASHBOARD PANEL NEEDED TO BE REPLACED. THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGES W…
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TL*THE CONTACT OWNS A 1999 LEXUS LS400. WHEN THE CONTACT STARTED THE VEHICLE SHE NOTICED THAT THE DASHBOARD PANEL WOULD NO LONGER FUNCTION. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHERE THE CONTACT WAS INFORMED THAT THE ENTIRE DASHBOARD PANEL NEEDED TO BE REPLACED. THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGES WERE 90000. UPDATED 07/07/10.*JB
NHTSA ODI #10315079
90,000 miles · Mar 1, 2010
Electrical SystemInterior Lighting
1999 400LS LEXUS DASH PANEL DEFECTIVE. *TR
NHTSA ODI #10315075
10,000 miles · Feb 16, 2010
Vehicle Speed Control
I'M WRITING THIS IN THE HOPES THAT IT MAY BE OF SOME HELP IN TOYOTAS BRAKE PROBLEM. MY 1999 LEXUS LS400 WOULD LOOSE THROTTLE CONTROL, THE ENGINE SPEED WOULD DROP TO IDLE REGARDLESS OF WHAT WAS DONE TO THE THROTTLE ITSELF. AFTER 3 TRIPS TO THE DEALER, THEY FOUND THAT THE THROTTLE POSITION SENSOR WOULD NOT WORK IF IT HAD BECOME WE…
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I'M WRITING THIS IN THE HOPES THAT IT MAY BE OF SOME HELP IN TOYOTAS BRAKE PROBLEM. MY 1999 LEXUS LS400 WOULD LOOSE THROTTLE CONTROL, THE ENGINE SPEED WOULD DROP TO IDLE REGARDLESS OF WHAT WAS DONE TO THE THROTTLE ITSELF. AFTER 3 TRIPS TO THE DEALER, THEY FOUND THAT THE THROTTLE POSITION SENSOR WOULD NOT WORK IF IT HAD BECOME WET. THEY REPLACED THE TPS AND THAT CURED THE PROBLEM. *TR
NHTSA ODI #10310746
50,000 miles · Feb 3, 2010
Vehicle Speed ControlCrash
1999 LEXUS LS 400. SUDDEN ACCELERATION. *TR
NHTSA ODI #10304673
80,000 miles · May 29, 2008
Seat BeltsSteering
THE SEAT BELTS ON MY CAR DO NOT RETRACT OR STAY TIGHT ON ME ANYMORE. THEY CONTINUE TO LOOSEN AS I DRIVE. THEY ARE STIFF ALMOST BRITTLE. THE STEERING WHEEL DOES NOT MOVE OUT LIKE IT USED TO. NOW IT MOVES AWAY FROM THE DASH IN AN UPWARD DIRECTION TOWARD MY FACE. *TR
NHTSA ODI #10229242
Mileage unknown · Jan 31, 2007
Electrical System
WE HAVE OWNED 3 LEXUS AND ALL 3 OF THEM HAVE HAD PROBLEMS WITH THE DIGITAL RADIO PRINT OUT. WE TOOK IT TO A DEALER AND THEY WOULD REPLACE IT FOR OVER $500.00. WE ALSO CONTACTED THE CUSTOMER SERVICE DEPT. AND THEY WOULD DO NOTHING TO REPLACE IT. IT SEEM TO ME THAT SUCH AN EXPENSIVE VEHICLE SHOULD HAVE A RADIO THAT WORKS.
NHTSA ODI #10181244
Official recalls
0
No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1
DP03003 · Unintended Engine Speed Increase/sa
Opened Jul 17, 2003 · Closed Sep 23, 2003
Status: closed (inferred from source dates) · Vehicle Speed Control:linkages
ON MAY 13, 2003 THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION (NHTSA) RECEIVED AN APRIL 25, 2003 LETTER FROM MR. PETER BODDAERT PETITIONING THE AGENCY TO CONDUCT A PETITION ANALYSIS OF CERTAIN 1997 THROUGH 2000 MODEL YEAR LEXUS 300 AND 400 SERIES VEHICLES FOR PROBLEMS OF VEHICLE SPEED CONTROL LINKAGES WHICH RESULTS IN SUDDEN, UNEXPECTED EXCESSIVE (VEHICLE) ACCELERATION EVEN THOUGH THERE IS NO PRESSURE [SIC]APPLIED TO THE ACCELERATOR PEDAL.IN SUPPORT OF HIS PETITION, MR. BODDAERT CITES A NUMBER OF ODI REPORTS CONCERNING VEHICLE SPEED CONTROL LINKAGES IN THE SUBJECT VEHICLES.INCLUDED AMONGST THE THIRTY-SIX REPORTS HE CITES IS ONE INVOLVING A LEXUS THAT COLLIDED WITH FIVE OTHER CARS IN THE SPACE OF ONE-HALF MILE BEFORE IT COULD BE STOPPED.ODI FOUND NO DATA INDICATING THE EXISTENCE OF A DEFECT TREND RELATED TO THE PETITIONER'S ALLEGATIONS AT THIS TIME.THEREFORE, THERE IS NO REASONABLE POSSIBILITY THAT AN ORDER CONCERNING THE NOTIFICATION AND REMEDY OF A SAFETY-RELATED DEFECT WOULD BE ISSUED AS A RESULT OF GRANTING MR. BODDAERT'S PETITION.CONSEQUENTLY, IN VIEW OF THE NEED TO ALLOCATE AND PRIORITIZE NHTSA'S LIMITED RESOURCES TO BEST ACCOMPLISH THE AGENCY'S SAFETY MISSION, THE PETITION IS DENIED.
1999 Lexus LS400 Problems, Complaints & Recalls | Skip That Year
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