Using A/C Control Panel Switches
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
- While pressing and holding AUTO and fresh/recirculated air switches simultaneously, turn ignition on. See Figure. Indicators will flash on and off at one second intervals 4 times in succession. After indicator check is complete, system will automatically enter self-diagnostic mode. Press OFF button to cancel indicator check.
- Stored trouble DTCs will appear in sequence on temperature display panel. See DIAGNOSTIC TROUBLE CODE DEFINITIONS table. Press front defrost switch to display DTCs one at a time. Press OFF button to exit self-diagnostics. To clear DTC(s), see CLEARING DIAGNOSTIC TROUBLE CODES .