2007 Lexus ES 350 Owners Manual - Page 356

5

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5-2. Steps to take in an emergency

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When a tire is replaced with a spare tire

Grand spare tire

The spare tire is also equipped with the tire pressure warning valve and transmitter.

The tire pressure warning light will turn on if the tire inflation pressure of the spare

tire is low. If a tire goes flat, even though the flat tire is replaced with the spare tire,

the warning light does not turn off. Replace the spare tire with the repaired tire and

adjust the proper tire inflation pressure. The warning light will turn off after a few

minutes.

Compact spare tire

The compact spare tire is not equipped with the tire pressure warning valve and

transmitter. If a tire goes flat, the warning light will not turn off even though the flat

tire is replaced with the spare tire. Replace the spare tire with the repaired tire and

adjust the proper tire inflation pressure. The warning light will turn off after a few

minutes.

■

If the tire pressure warning system is inoperative

The tire pressure warning system may become inoperative in the following condi-

tions:

(When the condition becomes normal, the system will work properly.)

●

If tires not equipped with tire pressure warning valves and transmitters are used.

●

If the ID code on the tire pressure warning valves and transmitters is not regis-

tered.

●

If electronic devices or facilities using similar radio wave frequencies are nearby.

●

If a radio set at similar frequencies is in use in the vehicle.

●

If the tire pressure warning select switch is set to a different tire setting.

●

If there is a lot of snow or ice on the vehicle, in particular around the wheels or

wheel housings.

●

If non-genuine Lexus wheels are used.

●

If tire chains are used.

●

If the spare tire is in a location subject to poor radio wave signal reception.

●

If the tire inflation pressure is more than 73 psi (500 kPa, 5.1 kgf/cm

2

or bar) or

higher.