1991 Lexus LS400 Other or unknown Problems
- Complaints
- 3about this part
- Share
- 14%of 21 total for the year
- Median mileage
- 105,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the other or unknown of the 1991 Lexus LS400, 14% of the 21 complaints for this model year. Where a mileage was given, the median is 105,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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.. …”
NHTSA complaint #10938905, filed 2016-12, 105,000 milesOther or unknown: other model years
Other parts of the 1991 Lexus LS400
5 complaintsAir bags
3 complaintsEngine cooling
2 complaintsSteering
2 complaintsTires
2 complaintsVehicle speed control
2 complaintsWheels
2 complaintsElectrical system
1 complaintsFuel system
1 complaintsSeat belts
1 complaintsBody and structure
1 complaints
← All problems reported for the 1991 Lexus LS400
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology