IS350 AWD/IS350/IS300- Page 303

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6-3. Do-it-yourself maintenance

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Make sure to initialize the tire pressure 

warning system after registering the ID 

codes. If the system is initialized before 

registering the ID codes, the initialized 

values will be invalid.

●

As the tires will be warm when registra-

tion is completed, make sure to allow the 

tires to cool before performing initializa-

tion.

■

Canceling ID code registration

●

To cancel ID code registration after it has 

been started, turn the engine switch off 

before driving the vehicle.

If the vehicle is driven after ID code regis-

tration is started, to cancel registration, 

perform the ID code registration start 

procedure again and turn the engine 

switch off before driving.

●

If ID code registration has been canceled, 

the tire pressure warning light will blink 

for approximately 1 minute when the 

engine switch is turned to IGNITION 

ON mode and then illuminate. The tire 

pressure warning system will be opera-

tional when the tire pressure warning 

light turns off.

●

If the warning light does not turn off even 

after several minutes have elapsed, ID 

code registration may not have been can-

celled correctly. To cancel registration, 

perform the ID code registration start 

procedure again and then turn the engine 

switch off before driving.

■

If ID codes are not registered properly

●

In the following situations, ID code regis-

tration may take longer than usual to be 

completed or may not be possible. (Usu-

ally, the vehicle will need to be driven for 

approximately 10 to 30 minutes to com-

plete ID code registration.)

If ID code registration is not complete 

after driving for approximately 30 min-

utes, continue driving for a while.

• If the vehicle is driven on an unpaved 

road, it may take longer than normal to 

complete registration.

• If the vehicle is backed up while perform-

ing registration, data collected during 

registration will be cleared, and it will take 

longer than normal to complete.

• If the vehicle is driven in heavy traffic or 

another situation where other vehicles 

are driven close by, it may take time for 

the system to recognize the tire pressure 

warning valve and transmitters of your 

vehicle over those of other vehicles.

• If  a  wheel  with  a  tire pressure warning 

valve and transmitter installed is inside or 

near the vehicle, registration of the ID 

codes for the installed wheels may not be 

possible.

If ID registration is not complete after driv-

ing for approximately 1 hour, park the vehi-

cle in a safe place for approximately 20 

minutes and then perform the ID code reg-

istration procedure again.

●

In the following situations, ID code regis-

tration will not be started or was not com-

pleted properly and the system will not 

operate properly. Perform the ID code 

registration procedure again.

• If, when attempting to start ID code regis-

tration, the tire pressure warning light 

does not blink slowly 3 times.

• If, when the vehicle has been driven for 

about 20 minutes after performing ID 

code registration, the tire pressure warn-

ing light blinks for approximately 1 minute 

and then illuminates.

●

If ID code registration cannot be com-

pleted after performing the above proce-

dure, contact your Lexus dealer.