2005 Lexus LX 470 Owners Manual - Page 308

STARTING AND DRIVING D Only use tires of specified size. The size, manufacturer, brand and tread pattern for all 4 tires should be the same. If you use the tires other than specified, or different type or size, the vehicle stability control system may not function correctly. When replacing the tires or wheels, contact your Lexus dealer. (See "Checking and replacing tires" on page 393.) VARIABLE GEAR RATIO STEERING SYSTEM The variable gear ratio steering system adjusts the wheel turning angle depending on the vehicle speed and how much you turn the steering wheel. 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. 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) 284