Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Tire pressure warning system

Your vehicle is equipped with a tire pressure warning system that uses tire pressure warning valves and transmitters to detect low tire inflation pressure before serious problems arise.

The tire pressure warning system of this vehicle adopts a 2-type warning system.

  • When "Adjust Pressure" is displayed (Normal Warning)

The tire pressure warning light comes on and a buzzer sounds when the tire inflation pressure becomes low due to natural air leakage or outside temperature.

  • When "Immediately Check tire when Safe" is displayed (Emergency Warning)

The tire pressure warning light comes on and a buzzer sounds when the tire inflation pressure becomes low suddenly due to a blowout. However, the system may not be able to detect sudden tire ruptures (bursting, etc.).

The tire pressure detected by the tire pressure warning system can be displayed on the multi-information display.

The unit can be changed.

Do-it-yourself maintenance

■ How to change the unit

4.2-inch display

1. Park the vehicle in a safe place and turn the engine switch off.

Changing the unit cannot be performed while the vehicle is moving.

2. Turn the engine switch to ON.

3. Select of the multi-information display and then press .

4. Press or to select "Vehicle Settings" and then press and hold .

5. Press or to select "TPWS setting" and then press .

6. Press or to select "Pressure unit setting".

7. Press or to select the desired unit and then press .

7.0-inch display

1. Park the vehicle in a safe place and turn the engine switch off.

Changing the unit cannot be performed while the vehicle is moving.

2. Turn the engine switch to ON.

3. Select of the multi-information display and then press .

4. Press or to select "Vehicle Settings" and then press and hold .

5. Press or to select "TPWS setting" and then press .

6. Press or to select "Pressure unit setting".

7. Press or to select the desired unit and then press .

■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.

■Tire inflation pressure

  • It may take a few minutes to display the tire inflation pressure after the engine switch is turned to ON. It may also take a few minutes to display the tire inflation pressure after inflation pressure has been adjusted.
  • Tire inflation pressure changes with temperature.

    The displayed values may also be different from the values measured using a tire pressure gauge.

■Situations in which the tire pressure warning system may not operate properly

  • In the following cases, the tire pressure warning system may not operate properly.
    • If non-genuine Toyota wheels are used.
    • A tire has been replaced with a tire that is not an OE (Original Equipment) tire.
    • A tire has been replaced with a tire that is not of the specified size.
    • Tire chains, etc. are equipped.
    • An auxiliary-supported run-flat tire is equipped.
    • If a window tint that affects the radio wave signals is installed.
    • If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel housings.
    • If the tire inflation pressure is extremely higher than the specified level.
    • If wheel without tire pressure warning valves and transmitters are used.
    • If the ID code on the tire pressure warning valves and transmitters is not registered in the tire pressure warning computer.
  • Performance may be affected in the following situations.
    • Near a TV tower, electric power plant, gas station, radio station, large display, airport or other facility that generates strong radio waves or electrical noise
    • When carrying a portable radio, cellular phone, cordless phone or other wireless communication device
  • If tire position information is not correctly displayed due to the radio wave conditions, the display may be corrected by driving and changing the radio wave conditions.
  • When the vehicle is parked, the time taken for the warning to start or go off could be extended.
  • When tire inflation pressure declines rapidly for example when a tire has burst, the warning may not function.

■Warning performance of the tire pressure warning system

The warning of the tire pressure warning system will change in accordance with the conditions under which it was initialized. For this reason, the system may give a warning even if the tire pressure does not reach a low enough level, or if the pressure is higher than the pressure that was adjusted to when the system was initialized.

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