Lexus GS450h2016 Service Manual page 364

364
6-3. Do-it-yourself maintenance
◆
Registering ID codes
The tire pressure warning valve and transmitter is equipped with a unique ID
code. When replacing a tire pressure warning valve and transmitter, it is nec-
essary to register the ID code. Have the ID code registered by your Lexus
dealer.
When to replace your vehicle's tires
■
Tires should be replaced if:
The treadwear indicators are showing on a tire.
●
You have tire damage such as cuts, splits, cracks deep enough to expose the fabric, and
●
bulges indicating internal damage
A tire goes flat repeatedly or cannot be properly repaired due to the size or location of
●
a cut or other damage
If you are not sure, consult with your Lexus dealer.
Replacing tires and wheels
■
If the ID code of the tire pressure warning valve and transmitter is not registered, the tire
pressure warning system will not work properly. After driving for about 20 minutes, the
tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunc-
tion.
Tire life
■
Any tire over 6 years old must be checked by a qualified technician even if it has seldom
or never been used or damage is not obvious.
Routine tire inflation pressure checks
■
The tire pressure warning system does not replace routine tire inflation pressure checks.
Make sure to check tire inflation pressure as part of your routine of daily vehicle checks.
When rotating the tires
■
Make sure that the power switch is off. If the tires are rotated while the power switch is in
ON mode, the tire position information will not be updated.
If this accidentally occurs, either turn the power switch to off and then to ON mode, or
initialize the system after checking that the tire pressure is properly adjusted.
Low profile tires (except 225/50R17 tires)
■
Generally, low profile tires will wear more rapidly and tire grip performance will be
reduced on snowy and/or icy roads when compared to standard tires. Be sure to use
snow tires or tire chains on snowy and/or icy roads and drive carefully at a speed appro-
priate for road and weather conditions. (P. 275)
GS450h_OM_OM30E99U_(U)