Toyota Sienna 2010-2024 Owners Manual: If a warning light turns on or a warning buzzer sounds

Warning light

Warning light/Details/Actions

• The brake fluid level is low; or
• The brake system is malfunctioning

This light also comes on when the parking brake is not released. If the light turns off after the parking brake is fully released the system is operating normally.

- Immediately stop the vehicle in a safe place and contact your Toyota dealer. Continuing to drive the vehicle may be dangerous.

- Immediately stop the vehicle in a safe place and contact your Toyota dealer.

- Immediately stop the vehicle in a safe place and contact your Toyota dealer.

• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transaxle control system

- Have the vehicle inspected by your Toyota dealer immediately

• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system

- Have the vehicle inspected by your Toyota dealer immediately.

• The ABS; or
• The brake assist system

- Have the vehicle inspected by your Toyota dealer immediately.

- Have the vehicle inspected by your Toyota dealer immediately.

• The light will flash quickly when the system is operating.

• The light will turn on when the pre-collision braking is disabled.
• The light will turn on when the system cannot temporarily be used.

- Have the vehicle inspected by your Toyota dealer immediately.

• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The hill-start assist control system*2

The light will flash when the VSC or the TRAC system is operating.

- Have the vehicle inspected by your Toyota dealer immediately.

- Check that all the doors and the back door are closed.

(11.4 L, 2.5 Imp.gal.) or less

- Refuel the vehicle.

- Fasten the seat belt.

If the front passenger’s seat is occupied, the front passenger’s seat belt also needs to be fastened to make the warning light (warning buzzer) turn off.

• Natural causes
• Flat tire (, 568)

- Adjust the tire inflation pressure to the specified level.

The light will turn off after a few minutes. In case the light does not turn off even if the tire inflation pressure is adjusted, have the system checked by your Toyota dealer.

When the light comes on after blinking for 1 minute: Malfunction in the tire pressure warning system

- Have the system checked by your Toyota dealer

- Complete the third seat operation

If both the ABS and the brake system warning lights remain on

Stop your vehicle in a safe place immediately and contact your Toyota dealer. The vehicle will become extremely unstable during braking, and the ABS system may fail, which could cause an accident resulting in death or serious injury.

When the electric power steering system warning light comes on

The steering wheel may become extremely heavy.

If the steering wheel becomes heavier than usual when operating, hold firmly and operate using more force than usual.

If the tire pressure warning light comes on

Be sure to observe the following precautions. Failure to do so could cause a loss of vehicle control and result in death or serious injury.

Vehicles with standard tires:

• Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Check the tires.

  If a tire is flat, change it with the spare tire and have the flat tire repaired by the nearest Toyota dealer.

• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.

Vehicles with run-flat tires:

• Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 50 mph (80 km/h).
• Check and adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Have the tire replaced by the nearest Toyota dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.

If a blowout or sudden air leakage should occur

The tire pressure warning system may not activate immediately.

Maintenance of the tires

Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label (tire and load information label). (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label [tire and load information label], you should determine the proper tire inflation pressure for those tires.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS-tire pressure warning system) that illuminates a low tire pressure telltale (tire pressure warning light) when one or more of your tires is significantly under-inflated. Accordingly, when the low tire pressure telltale (tire pressure warning light) illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure.

Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability.

Please note that the TPMS (tire pressure warning system) is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale (tire pressure warning light).

Your vehicle has also been equipped with a TPMS (tire pressure warning system) malfunction indicator to indicate when the system is not operating properly. The TPMS (tire pressure warning system) malfunction indicator is combined with the low tire pressure telltale (tire pressure warning light). When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated.

This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended.

TPMS (tire pressure warning system) malfunctions may occur for a variety of reasons, including the installation of replacement or alternate tires or wheels on the vehicle that prevent the TPMS (tire pressure warning system) from functioning properly. Always check the TPMS (tire pressure warning system) malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS (tire pressure warning system) to continue to function properly

To ensure the tire pressure warning system operates properly

Do not install tires with different specifications or makers, as the tire pressure warning system may not operate properly.