2006 Lexus LS 430 Owners Manual - Page 353

5-2. Steps to take in an emergency n Resetting the tire pressure warning data After adjusting the tire inflation pressure, be sure to initialize the data. (→P.279) If the message remains on, the system may have malfunctioned. Have the vehicle inspected by your Lexus dealer as soon as possible n The tire pressure warning system may not function properly in the following con- ditions l Tires other than the specified sizes are used, or if tires of different sizes or tread pattern are mixed, or the degree of tread wear is very different among the installed tires. l A compact spare tire, snow tires, or tire chains are used. l The tire inflation pressure is excessively higher than specified, or tire inflation pressure suddenly drops due to buresting or other causes. l Driving on slippery road surfaces such as rough or frozen roads. l Driving under 19 mph (30 km/h) or above 62 mph (100 km/h), or less than 5 minutes drive. l Initialization was not performed correctly after replacing or rotating tires or wheels. l The outside temperature is below 32 °F (0 °C) or above 104 °F(40 °C). CAUTION n When the low tire pressure warning message appears Avoid abrupt maneuvering and braking. If the vehicle's tires have deteriorated, you could lose control of the vehicle, resulting in death or serious injury. 342