2006 Lexus GS 300 Owners Manual - Page 1076

STARTING AND DRIVING GS430-The slip indicator light comes on when the engine switch is selected in "IG−ON" mode. The light goes off when the engine is started. GS300-The slip indicator light comes on for a few seconds when the engine switch is selected in "IG−ON" mode. If the indicator light does not come on when the engine switch is selected in "IG−ON" mode, contact your Lexus dealer. Keep the following in mind when driving: D The hill−start assist control system operates for 5 seconds maximally. If both the brake and accelerator pedals remain undepressed for longer than 5 seconds, the system will gradually stop operating. D The hill−start assist control system is not designed for stopping the vehicle on an uphill slope. When stopping the vehicle, be sure to depress the brake pedal. " 1 GS430 2 GS300 Hill−start assist control system failure warning G31039 If the hill−start assist control system malfunctions, the slip indicator light (two−wheel drive models only) and brake system warning light (yellow) come on. At this time, the above message appears. (GS430 only-In some cases, the multi − information display shows either "CHECK VSC" or "CHECK ECB*" only.) *: Electronically Controlled Brake System If the message appears, the hill−start assist control system, vehicle stability control system and traction control system do not work. Although it is no problem to continue driving, have your vehicle checked by your Lexus dealer as soon as possible. 430