1993 Lexus LS400 Electrical system Problems
- Complaints
- 42about this part
- Share
- 65%of 65 total for the year
- Median mileage
- 111,900miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 42 complaints about the electrical system of the 1993 Lexus LS400, 65% of the 65 complaints for this model year. Where a mileage was given, the median is 111,900 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Dash functions don't work at times. Speed, fuel level,etc are not indicated when car is at rest or moving. This has been a recurring problem with the result that I fear driving the car and won't sell it as it is now. At around $1800 to repair with no guarantee the replacement is not buggy, I feel betrayed and dismissed by toyota.”
NHTSA complaint #10934343, filed 2016-12, 160,000 miles“My 1993 Lexus LS400 dashlights went out while driving from atlanta, ga to miami, fl on january 8th, 2011. I could not see the speedometer or any gauges! I have sent the circuit boards to a licensed electrical engineer to get it fixed. Everything is good now but almost crashed at night and almost got a ticket because I could not see the gauges!”
NHTSA complaint #10377111, filed 2011-01, 221,000 miles“Recently the car began to stumble under acceleration while driving up a hill or merging into traffic or maintaining speed while driving on the interstate. I initially thought it was a fuel supply issue so I changed out the fuel filter, without any improvement in the problem. I was going to change the fuel pump also and while researching on the internet I learned of a problem with bad electrolytic capacitors inside the car's ecu (engine computer) which can mimic a fuel supply problem. …”
NHTSA complaint #10583578, filed 2014-04, 155,000 miles“The first time my ecu failed was when I was parked I want to drive and the engine would not go above 1000rmps. I got the ecu replaced this was around 2013. The second time was a month ago. I was driving home from work had a huge thud in the engine and the same thing my car could no longer go above 1000rpms and couldn't get threw the intersection. The car behind me had to slam on there breaks because my car had lost all power. I made it home and was able to get a tow truck. By the time the tow truck arrived the car would start but then completely die. …”
NHTSA complaint #10957724, filed 2017-02, 165,000 miles“Instrument cluster panel light failure..unable to read fuel quantity or speed..please be advised that because of the excessive complaints regarding this problem I will hold the NHTSA solely responsible for any and all accidents including speeding tickets pertaining to this vehicle as from today 09/23/06. I would strongly advise that you contact this vehicle manufacture and urge an immediate recall regarding this major safety electrical problem.”
NHTSA complaint #10169157, filed 2006-09, 178,000 milesRelated service bulletins
- 10111398Apr 10, 2015LSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many…
- 10111205Apr 10, 2015LSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2000 | 3 | 25% |
| 1999 | 4 | 18% |
| 1998 | 9 | 20% |
| 1997 | 2 | 15% |
| 1996 | 3 | 16% |
| 1995 | 12 | 31% |
| 1994 | 44 | 65% |
| 1993 | 42 | 65% |
| 1992 | 2 | 25% |
| 1991 | 1 | 5% |
| 1990 | 6 | 25% |
Other parts of the 1993 Lexus LS400
6 complaintsBody and structure
5 complaintsVehicle speed control
5 complaintsInterior lighting
4 complaintsTransmission and drivetrain
4 complaintsExterior lighting
3 complaintsAir bags
2 complaintsOther or unknown
2 complaintsTires
2 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsEngine cooling
1 complaints
← All problems reported for the 1993 Lexus LS400
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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