One problem related to automatic stability control (asc) has been reported for the 2003 Lexus SC430. The most recently reported issues are listed below.
When driving on uneven pavement steering wheel jerks hard to the left and right when braking, occasionally changing to another lane. The dealer was contacted.
| Front Suspension problems | |
| Automatic Stability Control (asc) problems | |
| Clunking Noise problems |