IS350 AWD/IS350/IS300- Page 301

301

6-3. Do-it-yourself maintenance

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sure.

■

How to initialize the tire pressure 
warning system

1

Park the vehicle in a safe place, turn 
the engine switch off and wait 20 
minutes or more.

Initialization cannot be performed while 

the vehicle is moving.

2

Adjust the tire inflation pressure to 
the specified cold tire inflation pres-
sure level.

Make sure to adjust the tire pressure to the 

specified cold tire inflation pressure level. 

The tire pressure warning system will oper-

ate based on this pressure level.

3

Start the engine. (



P.130)

4

Press and hold the tire pressure 
warning reset switch until the tire 
pressure warning light blinks slowly 
3 times.

Then a message will be displayed on the 

multi-information display.

5

Drive straight (with occasional left 
and right turns) at approximately 
25 mph (40 km/h) or more for 
approximately 10 to 30 minutes.

Initialization is complete when the position 

of each tire is determined and the inflation 

pressure of each tire is displayed on the 

multi-information display.

■

Initialization procedure

●

Make sure to perform the initialization 

procedure after adjusting the tire inflation 

pressure.

Also, make sure the tires are cold before 

performing the initialization procedure or 

adjusting the tire inflation pressure.

●

If you have accidentally turned the engine 

switch off during initialization, it is not 

necessary to press the reset switch again 

as initialization will restart automatically 

when the engine switch has been turned 

to IGNITION ON mode for the next 

time.

●

If you accidentally press the reset switch 

when initialization is not necessary, adjust 

the tire inflation pressure to the specified 

level when the tires are cold, and conduct 

initialization again.

●

While the position of each tire is being 

determined and the inflation pressures 

are not being displayed on the 

multi-information display, if the inflation 

pressure of a tire drops, the tire pressure 

warning light will come on.

■

If the tire pressure warning system is not 

initialized properly

●

In the following situations, initialization 

may take longer than usual to be com-

pleted or may not be possible. (Usually, 

the vehicle will need to be driven for 

approximately 10 to 30 minutes to com-

plete initialization.) If initialization is not 

complete after driving approximately 30 

minutes, continue driving for a while.

• If the vehicle is driven on an unpaved 

road, it may take longer to complete ini-

tialization.

• If the vehicle is backed up while perform-

ing initialization, data collected during ini-

tialization 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 initialization is not complete after driving 

for approximately 1 hour, park the vehicle in