2006 Lexus GS 300 Owners Manual - Page 460

STARTING AND DRIVING Vehicles with standard tires: Stop your vehicle at a safe place as soon as possible and check that the tire inflation pressure is as specified on the tire and loading information label. If the low tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. If the tire goes flat, change to the spare tire. (See page 469.) The spare tire is not equipped with the tire pressure sensor. So, the low tire pressure warning light remains on even if the spare tire is mounted. The light goes off a few minutes after air is put into the deflated tire. CAUTION If the low tire pressure warning light comes on, observe the following instructions: D Decelerate as soon as possible to the most appropriate speed that conditions permit. D Avoid abrupt steering wheel maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes, causing death or serious injury. D The warning system may not activate immediately if bursts or sudden air leakage should occur. When the tyre pressure warning system warning light is lit, one or more of your tyres is significantly under−inflated. You should stop and check your tyres as soon as possible, and inflate them to the proper pressure as indicated on the vehicle's tyre information placard. Driving on a significantly under−inflated tire causes the tyre to overheat and can lead to tyre failure. Under−inflation also reduces fuel efficiency and tyre tread life, and may affect the vehicle's handling and stopping ability. Each tyre, including the spare, should be checked monthly when cold and set to the recommended inflation pressure as specified in the vehicle placard and owner's manual. 436