2003 Lexus LS430 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 4%of 23 total for the year
- Median mileage
- 136,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine cooling of the 2003 Lexus LS430, 4% of the 23 complaints for this model year. Where a mileage was given, the median is 136,000 miles.
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.
“2003 Lexus LS430 seized on highway while in motion!!! The car has a lengthy required maintenance up-keep history with one Lexus dealership only. I have all the print outs since oct 2002 - 10,329.06 in minor upkeep...and or oil change, etc reg. Maintenance. I think that we were charged for a couple of recalled items like a ext. Light but we weren't told anyway the car has to date..3/2/2010 not been involved in a collision. The car has oil/water and was not damaged. It ran fine !!!!!!! No over heat light, no accelerating...nothing like that it is such a shame. …”
NHTSA complaint #10315863, filed 2010-03, 136,000 milesRelated service bulletins
- 10132146Oct 2, 2013If a customer states there is an unpleasant odor in the vehicle from the HVAC system, there are various factors that may be involved.
Engine cooling: other model years
Other parts of the 2003 Lexus LS430
8 complaintsAir bags
3 complaintsVehicle speed control
3 complaintsTires
2 complaintsBrakes
1 complaintsEquipment
1 complaintsFuel system
1 complaintsLatches, locks and linkages
1 complaintsOther or unknown
1 complaintsSeat belts
1 complaintsTransmission and drivetrain
1 complaintsWheels
1 complaints
← All problems reported for the 2003 Lexus LS430
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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