Lexus LS460 2011 Owner's Manual page 683

4-3. Do-it-yourself maintenance

Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not regis-
tered, the tire pressure warning system will not work properly. After driving
for about 20 minutes, the tire pressure warning light comes on after blinking
for 1 minute to indicate a system malfunction.

Tire life
Any tire over 6 years old must be checked by a qualified technician even if
they have seldom or never been used or damage is not obvious.

If the tread wears down 4 mm (0.16 in.) or more on snow tires
The effectiveness of the tires as snow tires is lost.

Initializing the tire pressure warning system
Initialize the tire pressure warning system with the tire inflation pressure
adjusted to the specified level.

If you push the tire pressure reset switch accidentally
If initialization is performed, adjust the tire inflation pressure to the speci-
fied level and initialize the tire pressure warning system again.

When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following
cases, the setting has not been recorded and the system will not operate
properly. If repeated attempts to record tire inflation pressure setting are
unsuccessful, have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.

When operating the tire pressure warning reset switch, the tire pressure
warning light does not blink 3 times and the setting message does not
appear on the multi-information display.

After carrying out the initialization procedure, the tire pressure warning
light blinks for 1 minute then stays on after driving for about 20 minutes.

Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation pres-
sure checks. Make sure to check tire inflation pressure as part of your rou-
tine of daily vehicle checks.
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