Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 1991 Lexus LS400
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Brakes
725.9%
2 crashes, 0 fires · median 134,625 mi
Other & Unspecified
311.1%
0 crashes, 1 fires · median 105,000 mi
Airbags
311.1%
2 crashes, 0 fires
Wheels
27.4%
1 crashes, 0 fires
Tires
27.4%
Acceleration & Cruise Control
27.4%
2 crashes, 0 fires
Steering
27.4%
Engine & Cooling
27.4%
Seat Belts
13.7%
Fuel & Propulsion
13.7%
0 crashes, 1 fires · median 105,000 mi
Body & Structure
13.7%
Electrical System
13.7%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Jan 1995peak 3Jul 2017
Complaints that involved harm
Reports where the owner recorded a crash, a fire, an injury or a death.
at 105,000 milesCerritos, CAFire
UNKNOWN OR OTHER
THIS LEXUS LS400 CAUGHT ON FIRE DURING SMOG CHECK AND BOTH NEW CATALYTIC CONVERTERS WERE ON FIRE AND 2 FIRE EXTINGUISHERS WERE USED. THE CAR IS STILL DRIVE-ABLE AND ONLY TAKE VERY SHORT SHORT "STOP AND GO" TRIPS IF YOU REALLY WANT IT GO FROM POINT A TO B. I HAVE ATTACHED 2 PICS ON THE SMOG CHECK PLACE AND A REPORT FROM THE SMOG CHECK PLACE BEFORE IT CAN FINISHED THE SMOG TEST PROCESS. I ALSO HAVE A FRIEND GOT A LEXUS ES300 1998 SIMILAR PROBLEMS WHICH HE SPENT AND REPLACED FUEL INJECTORS, TUNE UP, MAF, OXYGEN SENOR ETC BUT GET NO WHERE.. IT IS DEFINITELY AN INTERESTING ACADEMIC CASE AND ALSO A UNSAFE VEHICLE IN THE PUBLIC; WELL, I DO NOTICE EVERYONE GETS THEIR ATTENTION STARTS LOOKING AND SMELLING. ADDITIONAL INFORMATION -- THE 2 CATALYTIC CONVERTERS BECAME RED-HOT AFTER CHANGING AN ALTERNATOR FROM O'RIELLY AND IT WAS SUSPECTED TOO MUCH "UN-BURNED" GAS FROM ENGINE COMPARTMENT AND BURNT AT THE CATALYTIC CONVERTERS; A LOT OF EMISSION CONTROL PARTS CHANGED SUCH AS 2 CATALYTIC CONVERTERS, MAF, TUNE UP, MUFFLER CHECKED, PRESSURE PUMP CHECKED AND AMONG OTHER THINGS BUT NO RESULT.
NHTSA complaint #10938905 — an unverified report by a vehicle owner.
at 105,000 milesCerritos, CAFire
FUEL/PROPULSION SYSTEM
THIS LEXUS LS400 CAUGHT ON FIRE DURING SMOG CHECK AND BOTH NEW CATALYTIC CONVERTERS WERE ON FIRE AND 2 FIRE EXTINGUISHERS WERE USED. THE CAR IS STILL DRIVE-ABLE AND ONLY TAKE VERY SHORT SHORT "STOP AND GO" TRIPS IF YOU REALLY WANT IT GO FROM POINT A TO B. I HAVE ATTACHED 2 PICS ON THE SMOG CHECK PLACE AND A REPORT FROM THE SMOG CHECK PLACE BEFORE IT CAN FINISHED THE SMOG TEST PROCESS. I ALSO HAVE A FRIEND GOT A LEXUS ES300 1998 SIMILAR PROBLEMS WHICH HE SPENT AND REPLACED FUEL INJECTORS, TUNE UP, MAF, OXYGEN SENOR ETC BUT GET NO WHERE.. IT IS DEFINITELY AN INTERESTING ACADEMIC CASE AND ALSO A UNSAFE VEHICLE IN THE PUBLIC; WELL, I DO NOTICE EVERYONE GETS THEIR ATTENTION STARTS LOOKING AND SMELLING. ADDITIONAL INFORMATION -- THE 2 CATALYTIC CONVERTERS BECAME RED-HOT AFTER CHANGING AN ALTERNATOR FROM O'RIELLY AND IT WAS SUSPECTED TOO MUCH "UN-BURNED" GAS FROM ENGINE COMPARTMENT AND BURNT AT THE CATALYTIC CONVERTERS; A LOT OF EMISSION CONTROL PARTS CHANGED SUCH AS 2 CATALYTIC CONVERTERS, MAF, TUNE UP, MUFFLER CHECKED, PRESSURE PUMP CHECKED AND AMONG OTHER THINGS BUT NO RESULT.
NHTSA complaint #10938905 — an unverified report by a vehicle owner.
Chicago, ILCrash
AIR BAGS:FRONTAL
STOPPED AT A TOLL BOOTH ON ROUTE 355 AND NORTH AVEUE, AND WAS REAR ENDED BY A GEO METRO TRAVELING 50MPH. UPON IMPACT, NEITHER AIRBAGS DEPLOYED. INSURANCE COMPANY HAS REFUSED TO PAY FOR REPAIRS. CONSUMER HAS SPENT OVER $5,000. FOR THE NECESSARY REPAIRS. DIDN'T CONTACT THE DEALER OR MANUFACTURER.
NHTSA complaint #853099 — an unverified report by a vehicle owner.
Solana Beach, CACrash3 injured
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
PARKED CAR-PUT IN REVERSE AND VEHICLE TOOK OFF FULL THROTTLE, BRAKES DID NOT WORK-TOTALED CAR.
NHTSA complaint #701975 — an unverified report by a vehicle owner.
Solana Beach, CACrash3 injured
VEHICLE SPEED CONTROL
PARKED CAR-PUT IN REVERSE AND VEHICLE TOOK OFF FULL THROTTLE, BRAKES DID NOT WORK-TOTALED CAR.
NHTSA complaint #701975 — an unverified report by a vehicle owner.
Mobile, ALCrash1 injured
VEHICLE SPEED CONTROL
SHIIFTED GEAR SELECTOR IN REVERSE THE VEHICLE SUDDENLY SURGED REARWARD, RESULTING IN AN ACCIDENT.
NHTSA complaint #804203 — an unverified report by a vehicle owner.
The most recent complaints
In the owners' own words, exactly as filed with NHTSA.
Sacramento, CA
UNKNOWN OR OTHER
TAKATA INFLATOR THE AIRBAGS THE MPH GAUGEZ MOST OF DASH BOARD LIGHTS DONT WORK.
NHTSA complaint #11004193 — an unverified report by a vehicle owner.
at 105,000 milesCerritos, CAFire
UNKNOWN OR OTHER
THIS LEXUS LS400 CAUGHT ON FIRE DURING SMOG CHECK AND BOTH NEW CATALYTIC CONVERTERS WERE ON FIRE AND 2 FIRE EXTINGUISHERS WERE USED. THE CAR IS STILL DRIVE-ABLE AND ONLY TAKE VERY SHORT SHORT "STOP AND GO" TRIPS IF YOU REALLY WANT IT GO FROM POINT A TO B. I HAVE ATTACHED 2 PICS ON THE SMOG CHECK PLACE AND A REPORT FROM THE SMOG CHECK PLACE BEFORE IT CAN FINISHED THE SMOG TEST PROCESS. I ALSO HAVE A FRIEND GOT A LEXUS ES300 1998 SIMILAR PROBLEMS WHICH HE SPENT AND REPLACED FUEL INJECTORS, TUNE UP, MAF, OXYGEN SENOR ETC BUT GET NO WHERE.. IT IS DEFINITELY AN INTERESTING ACADEMIC CASE AND ALSO A UNSAFE VEHICLE IN THE PUBLIC; WELL, I DO NOTICE EVERYONE GETS THEIR ATTENTION STARTS LOOKING AND SMELLING. ADDITIONAL INFORMATION -- THE 2 CATALYTIC CONVERTERS BECAME RED-HOT AFTER CHANGING AN ALTERNATOR FROM O'RIELLY AND IT WAS SUSPECTED TOO MUCH "UN-BURNED" GAS FROM ENGINE COMPARTMENT AND BURNT AT THE CATALYTIC CONVERTERS; A LOT OF EMISSION CONTROL PARTS CHANGED SUCH AS 2 CATALYTIC CONVERTERS, MAF, TUNE UP, MUFFLER CHECKED, PRESSURE PUMP CHECKED AND AMONG OTHER THINGS BUT NO RESULT.
NHTSA complaint #10938905 — an unverified report by a vehicle owner.
at 105,000 milesCerritos, CAFire
FUEL/PROPULSION SYSTEM
THIS LEXUS LS400 CAUGHT ON FIRE DURING SMOG CHECK AND BOTH NEW CATALYTIC CONVERTERS WERE ON FIRE AND 2 FIRE EXTINGUISHERS WERE USED. THE CAR IS STILL DRIVE-ABLE AND ONLY TAKE VERY SHORT SHORT "STOP AND GO" TRIPS IF YOU REALLY WANT IT GO FROM POINT A TO B. I HAVE ATTACHED 2 PICS ON THE SMOG CHECK PLACE AND A REPORT FROM THE SMOG CHECK PLACE BEFORE IT CAN FINISHED THE SMOG TEST PROCESS. I ALSO HAVE A FRIEND GOT A LEXUS ES300 1998 SIMILAR PROBLEMS WHICH HE SPENT AND REPLACED FUEL INJECTORS, TUNE UP, MAF, OXYGEN SENOR ETC BUT GET NO WHERE.. IT IS DEFINITELY AN INTERESTING ACADEMIC CASE AND ALSO A UNSAFE VEHICLE IN THE PUBLIC; WELL, I DO NOTICE EVERYONE GETS THEIR ATTENTION STARTS LOOKING AND SMELLING. ADDITIONAL INFORMATION -- THE 2 CATALYTIC CONVERTERS BECAME RED-HOT AFTER CHANGING AN ALTERNATOR FROM O'RIELLY AND IT WAS SUSPECTED TOO MUCH "UN-BURNED" GAS FROM ENGINE COMPARTMENT AND BURNT AT THE CATALYTIC CONVERTERS; A LOT OF EMISSION CONTROL PARTS CHANGED SUCH AS 2 CATALYTIC CONVERTERS, MAF, TUNE UP, MUFFLER CHECKED, PRESSURE PUMP CHECKED AND AMONG OTHER THINGS BUT NO RESULT.
NHTSA complaint #10938905 — an unverified report by a vehicle owner.
at 134,625 milesNevato, CA
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:HOSES, LINES/PIPING, AND FITTINGS
TL* THE CONTACT OWNS A 1991 LEXUS LS 400. THE CONTACT WAS EXITING A PARKING SPACE WHEN THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD ABNORMALLY. IN ADDITION, THE CONTACT NOTICED THAT BRAKE FLUID WAS LEAKING FROM THE VEHICLE. THE VEHICLE WAS AT LOCAL REPAIR SHOP WHERE IT WAS DIAGNOSED THAT THE BRAKE LINES WERE FRACTURED AND HAD CAUSED THE BRAKE FLUID LEAK. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE BUT DID NOT OFFER ANY ASSISTANCE OTHER THAN FILING A COMPLAINT FOR THE CONTACT. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 134,625 AND THE CURRENT MILEAGE WAS 134,900. UPDATED 08/31/11 *BF UPDATED 09/12/11
NHTSA complaint #10412439 — an unverified report by a vehicle owner.
at 134,625 milesNevato, CA
SERVICE BRAKES, HYDRAULIC
TL* THE CONTACT OWNS A 1991 LEXUS LS 400. THE CONTACT WAS EXITING A PARKING SPACE WHEN THE BRAKE PEDAL WAS DEPRESSED INTO THE FLOORBOARD ABNORMALLY. IN ADDITION, THE CONTACT NOTICED THAT BRAKE FLUID WAS LEAKING FROM THE VEHICLE. THE VEHICLE WAS AT LOCAL REPAIR SHOP WHERE IT WAS DIAGNOSED THAT THE BRAKE LINES WERE FRACTURED AND HAD CAUSED THE BRAKE FLUID LEAK. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE BUT DID NOT OFFER ANY ASSISTANCE OTHER THAN FILING A COMPLAINT FOR THE CONTACT. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 134,625 AND THE CURRENT MILEAGE WAS 134,900. UPDATED 08/31/11 *BF UPDATED 09/12/11
NHTSA complaint #10412439 — an unverified report by a vehicle owner.
Bristol, TN
SEAT BELTS
1 - SEAT BELTS TO NOT FULLY AUTOMATICALLY RETRACT BY THEMSELVES IN COOL WEATHER.
NHTSA complaint #10253004 — an unverified report by a vehicle owner.
Bristol, TN
STEERING
ITS WELL KNOWN THAT THE POWER STEERING/ALTERNATOR SETUP ON THE 1990-1994 LEXUS LS400S ARE POORLY DESIGNED. THE POWER STEERING PUMPS ARE KNOWN TO SPRING LEAKS. THEY ARE LOCATED DIRECTLY OVER THE ALTERNATOR CHARGING SYSTEM AND THE LEAKING FLUID SHORTS OUT THE ALTERNATOR, LEADING TO FAILURE. I HAVE HAD TWO OF THESE AND BOTH WERE LEAKING AND AFTER RESEARCHING, ITS HARD TO FIND A 1990-94 LS400 ON THE ROAD THAT DOES NOT HAVE A LEAKING POWER STEERING PUMP. THE PUMP SEALS SHOULD HAVE BEEN BETTER MANUFACTURED, PLACED IN A DIFFERENT CONFIGURATION, OR A "ALTERNATOR GUARD" PLACED OVER THE ALTERNATOR TO KEEP THE FLUID FROM SEEPING INTO THE ALTERNATOR CAUSING THE PREMATURE FAILURE. I HAVE SEEN A COUPLE OF THESE WITH FIRES IN THIS AREA AND CAN UNDERSTAND IT BEING A POSSIBILITY WITH THE POWER STEERING OIL LEAKING DOWN INTO THE ALTERNATOR. SO, NOT ONLY DO THE PUMPS LEAK EXTERNALLY (THEY ALSO LEAK INTERNALLY AND SUCK INTO THE ENGINE), BUT THEY ALSO RUIN THE ALTERNATOR AND CAUSE A POTENTIAL FIRE HAZARD. ANOTHER PROBLEM AREA WITH THIS SAME CAR IS THE HVAC CONTROLS WILL TURN BLACK AFTER A FEW YEARS, CREATING A SAFETY HAZARD, BECAUSE YOU CANNOT SEE WHAT YOUR HEATING/DEFROSTER SETTINGS ARE AT NIGHT.
NHTSA complaint #10253002 — an unverified report by a vehicle owner.
Bristol, TN
ELECTRICAL SYSTEM
ITS WELL KNOWN THAT THE POWER STEERING/ALTERNATOR SETUP ON THE 1990-1994 LEXUS LS400S ARE POORLY DESIGNED. THE POWER STEERING PUMPS ARE KNOWN TO SPRING LEAKS. THEY ARE LOCATED DIRECTLY OVER THE ALTERNATOR CHARGING SYSTEM AND THE LEAKING FLUID SHORTS OUT THE ALTERNATOR, LEADING TO FAILURE. I HAVE HAD TWO OF THESE AND BOTH WERE LEAKING AND AFTER RESEARCHING, ITS HARD TO FIND A 1990-94 LS400 ON THE ROAD THAT DOES NOT HAVE A LEAKING POWER STEERING PUMP. THE PUMP SEALS SHOULD HAVE BEEN BETTER MANUFACTURED, PLACED IN A DIFFERENT CONFIGURATION, OR A "ALTERNATOR GUARD" PLACED OVER THE ALTERNATOR TO KEEP THE FLUID FROM SEEPING INTO THE ALTERNATOR CAUSING THE PREMATURE FAILURE. I HAVE SEEN A COUPLE OF THESE WITH FIRES IN THIS AREA AND CAN UNDERSTAND IT BEING A POSSIBILITY WITH THE POWER STEERING OIL LEAKING DOWN INTO THE ALTERNATOR. SO, NOT ONLY DO THE PUMPS LEAK EXTERNALLY (THEY ALSO LEAK INTERNALLY AND SUCK INTO THE ENGINE), BUT THEY ALSO RUIN THE ALTERNATOR AND CAUSE A POTENTIAL FIRE HAZARD. ANOTHER PROBLEM AREA WITH THIS SAME CAR IS THE HVAC CONTROLS WILL TURN BLACK AFTER A FEW YEARS, CREATING A SAFETY HAZARD, BECAUSE YOU CANNOT SEE WHAT YOUR HEATING/DEFROSTER SETTINGS ARE AT NIGHT.
NHTSA complaint #10253002 — an unverified report by a vehicle owner.
Dardanelle, AR
TIRES:TREAD/BELT
TREAD SEPARATED WHILE DRIVING AT 70 MPH. *AK (TIRESIZE: 205/65-15)
NHTSA complaint #748521 — an unverified report by a vehicle owner.
Santa Rosa, CA
UNKNOWN OR OTHER
INSTRUMENT INDICATOR NEEDLES FAIL TO ILUMINATE. SEE THIS AS A COMMON PROBLEM OF OTHERS AT THIS YAHOO LEXUS CHAT FORUM --- HTTP://MESSAGES.YAHOO.COM/BBS?.MM=AU&ACTION=M&BOARD=8313852&TID=LEXUSINSTRUMENTLIGHTPROBLEMS&SID=8313852&MID=1 8AK
NHTSA complaint #722387 — an unverified report by a vehicle owner.
Chicago, ILCrash
AIR BAGS:FRONTAL
STOPPED AT A TOLL BOOTH ON ROUTE 355 AND NORTH AVEUE, AND WAS REAR ENDED BY A GEO METRO TRAVELING 50MPH. UPON IMPACT, NEITHER AIRBAGS DEPLOYED. INSURANCE COMPANY HAS REFUSED TO PAY FOR REPAIRS. CONSUMER HAS SPENT OVER $5,000. FOR THE NECESSARY REPAIRS. DIDN'T CONTACT THE DEALER OR MANUFACTURER.
NHTSA complaint #853099 — an unverified report by a vehicle owner.
EL Cajon, CA
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
CAR WAS PARKED IN FRONT OF MY HOUSE AND CAUGHT ON FIRE. TOTALLED
NHTSA complaint #713088 — an unverified report by a vehicle owner.
Butte, MT
WHEELS
WHEELS ON THE VEHICLE ARE DEFECTIVE AND STARTED TO FLAKE OFF. WHEN THE DEALER DIPPED THE WHOLE WHEEL, THEN THE CHROME FLAKED OFF, AND THE TIRES STARTED TO LOSE AIR. CONSUMER CONTACTED DEALER, DEALER CAN'T DETERMINE WHAT THE PROBLEM IS.
NHTSA complaint #827537 — an unverified report by a vehicle owner.
Butte, MT
TIRES
WHEELS ON THE VEHICLE ARE DEFECTIVE AND STARTED TO FLAKE OFF. WHEN THE DEALER DIPPED THE WHOLE WHEEL, THEN THE CHROME FLAKED OFF, AND THE TIRES STARTED TO LOSE AIR. CONSUMER CONTACTED DEALER, DEALER CAN'T DETERMINE WHAT THE PROBLEM IS.
NHTSA complaint #827537 — an unverified report by a vehicle owner.
Virginia B, VA
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
WHILE IDILING IN NEUTRAL, DRIVER PLACED THE GEAR INTO DRIVE WHILE HIS FOOT WAS ON THE BRAKE AND THE VEHICLE SURGE FORWARD AND THE ENGINE ACCELERATED TO MAXIMUM THROTTLE DESPITE HOLDING THE BRAKE PEDAL DOWN AS FAR AS IT COULD GO. VEHICLE STRUCK A PARKED VEHICLE.
NHTSA complaint #540456 — an unverified report by a vehicle owner.
Solana Beach, CACrash3 injured
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
PARKED CAR-PUT IN REVERSE AND VEHICLE TOOK OFF FULL THROTTLE, BRAKES DID NOT WORK-TOTALED CAR.
NHTSA complaint #701975 — an unverified report by a vehicle owner.
Solana Beach, CACrash3 injured
VEHICLE SPEED CONTROL
PARKED CAR-PUT IN REVERSE AND VEHICLE TOOK OFF FULL THROTTLE, BRAKES DID NOT WORK-TOTALED CAR.
NHTSA complaint #701975 — an unverified report by a vehicle owner.
Pittsburgh, PA
STEERING:LINKAGES:TIE ROD ASSEMBLY
TIE ROD FAILURE.
NHTSA complaint #537203 — an unverified report by a vehicle owner.
Mobile, ALCrash1 injured
VEHICLE SPEED CONTROL
SHIIFTED GEAR SELECTOR IN REVERSE THE VEHICLE SUDDENLY SURGED REARWARD, RESULTING IN AN ACCIDENT.
NHTSA complaint #804203 — an unverified report by a vehicle owner.
LOS Angeles, CA
AIR BAGS
AIR BAG DID NOT FULLY DEPLOY, FILLED COMPARTMENT WITH SMOKE INSTEAD.
NHTSA complaint #807365 — an unverified report by a vehicle owner.
Lewisdale, MD
STRUCTURE:BODY:DOOR
WATER LEAK ON PASSENGER'S SIDE FROM HEADLINER OF DOOR/FLOOR.
NHTSA complaint #500265 — an unverified report by a vehicle owner.
Potmac, MDCrash1 injured
AIR BAGS:FRONTAL
CONSUMER WAS IN AN ACCIDENT AND THE DRIVER SIDE AIR BAG DIDN'T DEPLOY . TT
NHTSA complaint #978667 — an unverified report by a vehicle owner.
LA Jolla, CA
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
BRAKES FAILED TWICE.
NHTSA complaint #481512 — an unverified report by a vehicle owner.
SAN Diego, CACrash
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
CONSUMER WAS DRIVING PULLING INTO A PARKING SPACE AND ANTI-LOCK BRAKE FAILED CAUSED AN ACCIDENT HIT A TREE . TT
NHTSA complaint #970676 — an unverified report by a vehicle owner.
LA Jolla, CA
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
ABS BRAKES: EXPERIENCED LOSS OF BRAKE EFFECTIVENESS. TT
NHTSA complaint #959641 — an unverified report by a vehicle owner.