2006 Lexus GS 300 Owners Manual - Page 448

STARTING AND DRIVING Hill−start assist control system failure warning VARIABLE GEAR RATIO STEERING SYSTEM (GS430 only) The variable gear ratio steering system adjusts the wheel turning angle depending on the vehicle speed and how much you turn the steering wheel. G31039 The vehicle wheel turning angle will be changed with a smaller degree of wheel maneuvering when you are driving at very low speed such as when putting your vehicle into a garage. When you start or stop the engine, you may hear a small noise and the steering wheel may move slightly. This is caused when the system starts or stops, and does not indicate a malfunction. " 1 GS430 2 GS300 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.) 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. In the following cases, to prevent the system from overheating, the system could be temporarily deactivated with the change in the center position of the steering wheel. This is not a malfunction. After the cause of the problem is eliminated, the system will return to normal automatically after a few minutes. D If you continue maneuvering the steering wheel when the vehicle is stopped or running at very low speed D If you continue driving holding the steering wheel to the extreme right or left D If you maneuver the steering wheel immediately after starting the engine at less than about −30_C (−22_F) 424