2006 Lexus GS 300 Owners Manual - Page 1084

STARTING AND DRIVING BRAKE PAD WEAR LIMIT INDICATORS ELECTRIC POWER STEERING SYSTEM The electric power steering system, using an electric motor, assists the turning of the steering wheel. In the following cases, you may feel the steering becomes heavy. However, the electric power steering system warning light does not come on. (Because it is not a malfunction.) When maneuvering or turning frequently over a long time, the power steering effect will be reduced to prevent the system from overheating. Avoid turning the steering wheel, or stop the vehicle. The system will become cool in about 10 minutes. G31006 The brake pad wear limit indicators on your disc brakes give a warning noise when the brake pads are worn to the extent that replacement is required. If you hear a squealing or scraping noise while driving, have the brake pads checked and replaced by your Lexus dealer as soon as possible. Expensive rotor damage can result if the pads are not replaced when needed. GS430 front brake only- The high brake performance is achieved by proper wear of brake pads and discs. As a result, the brake discs may wear earlier than the ones on the conventional brake system. When brake pads are replaced, brake disc thickness is required to be measured. It is dangerous to continue driving when brake pads and discs have exceeded the wear limit. 438 NOTICE Frequent maneuvering and turning over a long time may cause damage to the system in which the mechanism prevents overheating of the electric power steering system. When the battery is discharged, check the battery's condition. If necessary, recharge or replace the battery. For details, see "Checking battery condition" on page 581.