Total Complaints
83 filings
LEXUS LS400 · model year
83 NHTSA complaints, 5 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1993LEXUSLS400 carries 83 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 5 crashes, 1 fire, 3 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1993 LS400 is electrical system with 24 filings, followed by electrical system: instrument cluster/panel (13) and electrical system:wiring:interior/under dash (7). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 3 investigation files overlapping the 1993 LS400. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
83 filings
Crashes Reported
5 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM | 24 |
| ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL | 13 |
| ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH | 7 |
| VEHICLE SPEED CONTROL | 5 |
| INTERIOR LIGHTING | 4 |
| FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM | 4 |
| POWER TRAIN | 3 |
| AIR BAGS:FRONTAL | 2 |
| TIRES:TREAD/BELT | 2 |
| UNKNOWN OR OTHER | 2 |
| STRUCTURE | 2 |
| EXTERIOR LIGHTING | 2 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS | 1 |
| STRUCTURE:BODY:TRUNK LID | 1 |
| LATCHES/LOCKS/LINKAGES:DOORS:LATCH | 1 |
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. TOOK IT TO A MECHANIC THEY HAD IT FOR A WEEK SAID IT FIXED ITSELF. ONE HOUR AFTER I GOT IT THE CAR STARTED TO ACT UP AGAIN. THE CAR IS BACK IN THE SHOP. THEY HAD TO SEND THE ECU OUT TO GET REPAIRED. I DID SOME RESEARCH AND APPARENTLY THE PARTS LEXUS USED ON THE ECU ARE FAULTY AND LEEK. CAUSING THE MOTHERBOARD TO SHORT. I STILL HAVE NOT GOTTEN MY CAR BACK AND DON'T KNOW IF THE CAR WILL BE FIXED ONCE THEY GET THE COMPUTER BACK. PLEASE RESEAR
Mileage: 165,000
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. TOOK IT TO A MECHANIC THEY HAD IT FOR A WEEK SAID IT FIXED ITSELF. ONE HOUR AFTER I GOT IT THE CAR STARTED TO ACT UP AGAIN. THE CAR IS BACK IN THE SHOP. THEY HAD TO SEND THE ECU OUT TO GET REPAIRED. I DID SOME RESEARCH AND APPARENTLY THE PARTS LEXUS USED ON THE ECU ARE FAULTY AND LEEK. CAUSING THE MOTHERBOARD TO SHORT. I STILL HAVE NOT GOTTEN MY CAR BACK AND DON'T KNOW IF THE CAR WILL BE FIXED ONCE THEY GET THE COMPUTER BACK. PLEASE RESEAR
Mileage: 165,000
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. TOOK IT TO A MECHANIC THEY HAD IT FOR A WEEK SAID IT FIXED ITSELF. ONE HOUR AFTER I GOT IT THE CAR STARTED TO ACT UP AGAIN. THE CAR IS BACK IN THE SHOP. THEY HAD TO SEND THE ECU OUT TO GET REPAIRED. I DID SOME RESEARCH AND APPARENTLY THE PARTS LEXUS USED ON THE ECU ARE FAULTY AND LEEK. CAUSING THE MOTHERBOARD TO SHORT. I STILL HAVE NOT GOTTEN MY CAR BACK AND DON'T KNOW IF THE CAR WILL BE FIXED ONCE THEY GET THE COMPUTER BACK. PLEASE RESEAR
Mileage: 165,000
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.
Mileage: 160,000
TL* THE CONTACT OWNED A 1993 LEXUS LS400. WHILE DRIVING AT A LOW RATE OF SPEED, THE VEHICLE ACCELERATED AT A HIGH RATE OF SPEED WHEN THE BRAKE PEDAL WAS DEPRESSED. AS A RESULT, THE VEHICLE DROVE OVER A CURB AND CRASHED UP A SLOPE NEAR A WOODED AREA. THERE WERE NO INJURIES AND A POLICE REPORT WAS NOT FILED. IN ADDITION, THERE WAS AN ABNORMAL NOISE HEARD NEAR THE ENGINE COMPARTMENT AND FRONT END OF THE VEHICLE AS THE VEHICLE SURGED AT AN EXTREMELY HIGH RATE OF SPEED. THE FAILURE WAS REPORTED TO THE INSURANCE COMPANY AND THE MANUFACTURER. THE VEHICLE WAS DESTROYED AND TOWED TO A COLLISION CENTER. THE CONTACT WAS WAITING ON A RESPONSE FROM THE MANUFACTURER REGARDING THE UNINTENDED ACCELERATION FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 201,600.
Mileage: 201,600
WHILE TRAVELING ON THE INTERSTATE AT NIGHT-TIME, THE LIGHTING ON THE INSTRUMENT PANEL WENT COMPLETELY DARK AND IT BECAME IMPOSSIBLE TO READ ANY OF THE CARS INSTRUMENTATION SUCH AS VEHICLE SPEED AND WARNING INDICATORS. AT VARIOUS TIMES SINCE THEN THE GAUGES IN THE INSTRUMENT PANEL HAVE ALSO BECOME UNRELIABLE, THESE INCLUDE THE FUEL LEVEL GAUGE, THE SPEEDOMETER, AND THE TACHOMETER. AT TIMES THEY WILL NOT MOVE FROM THEIR "0" SETTING, SUCH AS WHEN THE VEHICLE IS POWERED OFF, UNTIL THEY WARM-UP OR YOU BANG THE DASH WITH YOUR HAND AND AT OTHER TIMES THEY WILL NOT WORK AT ALL. THE LIGHTING PROBLEM STILL OCCURS ON THE INSTRUMENTS ALSO. THE DEALER SAID ALL THEY COULD DO WAS REPLACE THE INSTRUMENT PANEL AND COMPONENTS IN THE DASH AT A COST OF OVER $2000 PLUS LABOR, SO OFTEN I JUST HAVE TO GUESS HOW FAST I AM DRIVING OR HOW MUCH FUEL IS IN THE CAR AS THE REPAIR WOULD BE ALMOST AS MUCH AS I PAID FOR THE CAR (THE INSTRUMENTS WERE WORKING WHEN I PURCHASED THE CAR). *TR
Mileage: 150,000
WHILE TRAVELING ON THE INTERSTATE AT NIGHT-TIME, THE LIGHTING ON THE INSTRUMENT PANEL WENT COMPLETELY DARK AND IT BECAME IMPOSSIBLE TO READ ANY OF THE CARS INSTRUMENTATION SUCH AS VEHICLE SPEED AND WARNING INDICATORS. AT VARIOUS TIMES SINCE THEN THE GAUGES IN THE INSTRUMENT PANEL HAVE ALSO BECOME UNRELIABLE, THESE INCLUDE THE FUEL LEVEL GAUGE, THE SPEEDOMETER, AND THE TACHOMETER. AT TIMES THEY WILL NOT MOVE FROM THEIR "0" SETTING, SUCH AS WHEN THE VEHICLE IS POWERED OFF, UNTIL THEY WARM-UP OR YOU BANG THE DASH WITH YOUR HAND AND AT OTHER TIMES THEY WILL NOT WORK AT ALL. THE LIGHTING PROBLEM STILL OCCURS ON THE INSTRUMENTS ALSO. THE DEALER SAID ALL THEY COULD DO WAS REPLACE THE INSTRUMENT PANEL AND COMPONENTS IN THE DASH AT A COST OF OVER $2000 PLUS LABOR, SO OFTEN I JUST HAVE TO GUESS HOW FAST I AM DRIVING OR HOW MUCH FUEL IS IN THE CAR AS THE REPAIR WOULD BE ALMOST AS MUCH AS I PAID FOR THE CAR (THE INSTRUMENTS WERE WORKING WHEN I PURCHASED THE CAR). *TR
Mileage: 150,000
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. I AM A TRAINED ELECTRONICS TECHNICIAN, SO I REMOVED AND DISASSEMBLED THE VEHICLE'S ECU AND REPLACED 2 CAPACITORS (COST, LESS THAN $1) THAT I COULD SEE WERE BAD (LEAKING ELECTROLYTE FLUID). I TEST DROVE THE CAR AND THE "FUEL SUPPLY PROBLEM" WAS GONE, IT DROVE NORMALLY AGAIN AND DID NOT STUMBLE WHEN THE ACCELERATOR PEDAL WAS PRESSED. I ORDERED THE OTHER 5 OR 6 ELECTROLYTIC CAPACITORS IN THE ECU (FROM AN OUTSIDE SOURCE, THE DEALER WILL ONLY SELL A COMPLETE ECU FOR $2000 PLUS) TO HOPEFULLY PREVENT FUTU
Mileage: 155,000
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. I AM A TRAINED ELECTRONICS TECHNICIAN, SO I REMOVED AND DISASSEMBLED THE VEHICLE'S ECU AND REPLACED 2 CAPACITORS (COST, LESS THAN $1) THAT I COULD SEE WERE BAD (LEAKING ELECTROLYTE FLUID). I TEST DROVE THE CAR AND THE "FUEL SUPPLY PROBLEM" WAS GONE, IT DROVE NORMALLY AGAIN AND DID NOT STUMBLE WHEN THE ACCELERATOR PEDAL WAS PRESSED. I ORDERED THE OTHER 5 OR 6 ELECTROLYTIC CAPACITORS IN THE ECU (FROM AN OUTSIDE SOURCE, THE DEALER WILL ONLY SELL A COMPLETE ECU FOR $2000 PLUS) TO HOPEFULLY PREVENT FUTU
Mileage: 155,000
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. I AM A TRAINED ELECTRONICS TECHNICIAN, SO I REMOVED AND DISASSEMBLED THE VEHICLE'S ECU AND REPLACED 2 CAPACITORS (COST, LESS THAN $1) THAT I COULD SEE WERE BAD (LEAKING ELECTROLYTE FLUID). I TEST DROVE THE CAR AND THE "FUEL SUPPLY PROBLEM" WAS GONE, IT DROVE NORMALLY AGAIN AND DID NOT STUMBLE WHEN THE ACCELERATOR PEDAL WAS PRESSED. I ORDERED THE OTHER 5 OR 6 ELECTROLYTIC CAPACITORS IN THE ECU (FROM AN OUTSIDE SOURCE, THE DEALER WILL ONLY SELL A COMPLETE ECU FOR $2000 PLUS) TO HOPEFULLY PREVENT FUTU
Mileage: 155,000
WHILE DRIVING OR WHEN FIRST STARTING THE VEHICLE THE WHOLE DASH WILL GO DARK AND NOT LIGHT BACK UP OR KEEP FLICKERING. YOU ARE UNABLE TO SEE HOW FAST YOU ARE GOING OR ANY WARNING LIGHTS AND THE GAS GAUGE DOES NOT WORK WHEN THE DASH LIGHTS GO OUT. DRIVING ALONE IS UNSAFE AND EVEN WITH OUR 2 CHILDREN MAKES IT VERY UNSAFE NOT KNOWING HOW FAST YOU ARE GOING AND FUEL GAUGE NOT WORKING SO YOU COULD RUN OUT OF FUEL AND LEFT STRANDED WITH KIDS ON THE ROAD. MANY COMPLAINTS HAVE BEEN MADE ABOUT THIS PROBLEM AND LEXUS REFUSES ANY ACKNOWLEDGEMENT OF THIS PROBLEM AND SOMETHING REALLY NEEDS TO BE DONE! *TR
Mileage: 115,000
WHILE DRIVING OR WHEN FIRST STARTING THE VEHICLE THE WHOLE DASH WILL GO DARK AND NOT LIGHT BACK UP OR KEEP FLICKERING. YOU ARE UNABLE TO SEE HOW FAST YOU ARE GOING OR ANY WARNING LIGHTS AND THE GAS GAUGE DOES NOT WORK WHEN THE DASH LIGHTS GO OUT. DRIVING ALONE IS UNSAFE AND EVEN WITH OUR 2 CHILDREN MAKES IT VERY UNSAFE NOT KNOWING HOW FAST YOU ARE GOING AND FUEL GAUGE NOT WORKING SO YOU COULD RUN OUT OF FUEL AND LEFT STRANDED WITH KIDS ON THE ROAD. MANY COMPLAINTS HAVE BEEN MADE ABOUT THIS PROBLEM AND LEXUS REFUSES ANY ACKNOWLEDGEMENT OF THIS PROBLEM AND SOMETHING REALLY NEEDS TO BE DONE! *TR
Mileage: 115,000
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! *TR
Mileage: 221,000
ELECTRICAL PROBLEM: INSTRUMENT PANEL. *TR
Mileage: 112,000
ELECTRICAL PROBLEM: INSTRUMENT PANEL. *TR
Mileage: 112,000
THE GAUGE CLUSTER LIGHTING ON MY 1993 LEXUS LS400 DOES NOT COME ON UNLESS IT IS ABOVE 75 DEGREES OR SO OUTSIDE OR IN THE PASSANGER COMPARTMENT. THE LIGHTING OF THE GAUGE CLUSTER IS NOT JUST NEEDED AT NIGHT. WITH THE GAUGES BEING ELECTRONICLY LIT YOU CAN'T SEE YOUR SPEED, REVS, ENGINE TEMP, OR FUEL LEVEL DAY OR NIGHT UNLESS THE CAR IS FULLY WARMED UP OR IT'S HOT OUTSIDE. NEEDLESS TO SAY THAT IN THE WINTER EVEN DURING THE DAY, THE LIGHTS ARE NO WHERE NEER WARM ENOUGH TO LIGHT UP. LEXUS HAS NO SUGGESTIONS OTHER THAN REPLACE THE UNIT WITH AN EXPENSIVE BRAND NEW ONE THAT WILL HAVE THE SAME PROBLEM IN A FEW YEARS. THEY HAVE NOT MADE ANY CHANGE TO THE CIRCUTRY OR LIGHTING IN ORDER TO ACCOMADATE FOR THEIR PROBLEM.
1993 LEXUS LS400 CLUSTER LIGHT FAILURE RESULTING IN THE DASHBOARD LIGHTS BEING COMPLETELY UNREADABLE. UNABLE TO DETERMINE SPEED, GAS LEVEL OR ANY WARNING LIGHTS. READ IN THE LEXUS FORUMS THAT THIS IS VERY COMMON AND LEXUS REFUSES TO RECALL EVEN THOUGH DEATH OR INJURY COULD RESULT. *TR
Mileage: 54,000
SPEEDOMETER - INSTRUMENT CLUSTER LIGHTING FAILURE. BECAUSE OF SOME FAULTY CONDENSER SPILLAGE CLUSTER LIGHTING FAILS. *TR
Mileage: 180,000
1993 LEXUS LS 400 DASH LIGHTS DON'T WORK, INCLUDING SPEEDOMETER. *TR
TL*THE CONTACT OWNS A 1993 LEXUS LS400. WHILE DRIVING APPROXIMATELY 40 MPH ON NORMAL ROAD CONDITIONS, THE INSTRUMENT CLUSTER FAILED TO DISPLAY READINGS FOR THE SPEEDOMETER, TACHOMETER, AND FUEL GAUGE. THERE WERE NO WARNINGS PRIOR TO THESE FAILURES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING AND IT WAS CONFIRMED THAT THE INSTRUMENT CLUSTER REQUIRED REPLACEMENT. THE VEHICLE HAS NOT BEEN REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE UNKNOWN.
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.