One problem related to tire pressure monitoring system has been reported for the 2003 Lexus SC430. The most recently reported issues are listed below.
The tpm light turned on. I have adjusted tire pressure, had the dealer adjust tire pressure and had an independent service provider adjust the tire pressure. This was done according to specs. The dealer can not figure out why the tpm light is on and has not offered a remedy.
| Tire problems | |
| Tire Pressure Monitoring System problems | |
| Tire Bubble problems |