2003 Lexus SC430 Engine cooling Problems
- Complaints
- 1about this part
- Share
- 5%of 20 total for the year
- Median mileage
- 1,000miles
- 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 SC430, 5% of the 20 complaints for this model year. Where a mileage was given, the median is 1,000 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.
“The car failed to start six times in the first five months. It seems they have found the cause of that problem. However, the car continues to make clunking noise whenever it goes over a bump. Lexus tells me that is normal. I say it sounds like a 1973 dodge I owned 30 years ago. The car also pulls to the right at low speeds. Again I'm told this is normal and is a result of the run flat tires. If so, they should use other tires. Parking brake light continues to come on intermittently. I have requested that this car be replaced repeatedly. Lexus has refused.”
NHTSA complaint #10070188, filed 2004-01, 1,000 milesRelated service bulletins
- 10011867Nov 16, 2004Rough idle when the vehicle is at a standstill and in gear (d position).
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2003 | 1 | 5% |
| 2002 | 1 | 2% |
Other parts of the 2003 Lexus SC430
10 complaintsBrakes
4 complaintsTires
3 complaintsSteering
2 complaintsSuspension
2 complaintsElectrical system
1 complaintsElectronic stability control
1 complaintsOther or unknown
1 complaintsBody and structure
1 complaintsTransmission and drivetrain
1 complaintsVehicle speed control
1 complaintsWheels
1 complaints
← All problems reported for the 2003 Lexus SC430
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