2006 Lexus GS 300 Owners Manual - Page 1078

STARTING AND DRIVING Variable gear ratio steering system failure warning VEHICLE DYNAMICS INTEGRATED MANAGEMENT (GS430 only) Vehicle Dynamics Integrated Management (VDIM) helps manage control for vehicle stability control system, anti−lock brake system, brake assist system, traction control system, engine output control, hill−start assist control system and also manages variable gear ratio steering system and electric power steering system. In order to control sudden steering wheel operation and the sideslip on slippery road surfaces, this system provides excellent vehicle stability by automatically controlling the brake, engine output and front wheel angle. The state of the tires will affect the performance of the vehicle dynamics integrated management system. Be sure to check the following: D Are tires of specified size installed? D Are tires of identical type installed? D Do the tires have stipulated tire pressure? D Are the tires worn? A problem with the tires or modified suspension systems will have an adverse effect on the system and may cause a malfunction, so be careful. G31044 If there is any malfunction in the system, the above message appears and the master warning light comes on. If the warning message and light come on while driving, the system is not working. Although conventional steering operates when maneuvered, a larger degree of wheel maneuvering (than at the time when the system is functioning properly) is needed when driving at low speed. At this time, the center position of the steering wheel could be changed. Although it is no problem to continue driving, have your vehicle repaired at your Lexus dealer. 432