Toyota Tundra Owners Manual: If a warning light turns on or a warning buzzer sounds

Toyota Tundra Owners Manual / When trouble arises / Steps to take in an emergency / If a warning light turns on or a warning buzzer sounds

Calmly perform the following actions if any of the warning lights comes on or flashes. If a light comes on or flashes, but then goes off, this does not necessarily indicate a malfunction in the system. However, if this continues to occur, have the vehicle inspected by your Toyota dealer.

Warning light and warning buzzer list

Warning light

Warning light/Details/Actions

Brake system warning light (warning buzzer)
  • Low brake fluid
  • Malfunction in the brake system

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

Charging system warning light

Indicates a malfunction in the vehicle's charging system

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

Malfunction indicator lamp

Indicates a malfunction in:

  • The electronic engine control system;
  • The electronic throttle control system; or
  • The electronic automatic transmission control system.

Have the vehicle inspected by your Toyota dealer immediately.

SRS warning light

Indicates a malfunction in:

  • 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.

ABS warning light

Indicates a malfunction in:

  • The ABS; or
  • The brake assist system

Have the vehicle inspected by your Toyota dealer immediately.

Low fuel level warning light

Standard fuel tank

Indicates remaining fuel is approximately 4.0 gal. (15.0 L, 3.3 Imp.gal.) or less

Large fuel tank

Indicates remaining fuel is approximately 3.8 gal. (14.4 L, 3.2 lmp.gal.) or less

Refuel the vehicle.

Seat belt reminder light (warning buzzer)*1

Warns the driver and/or front passenger to fasten their seat belts

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.

Master warning light

A buzzer sounds and the warning light comes on and flashes to indicate that the master warning system has detected a malfunction.

Parking brake warning light (warning buzzer)*2

Indicates that the parking brake is engaged.

Release the parking brake.

Tire pressure warning light
When the light comes on: Low tire inflation pressure such as
  • Natural causes
  • Flat tire

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.

Slip indicator

Indicates a malfunction in:

  • The VSC system;
  • Trailer Sway Control system;
  • The TRAC system;
  • The hill-start assist control system; or
  • The AUTO LSD system.

Have the vehicle inspected by your Toyota dealer immediately.

The light will flash when any of the above systems other than the hill-start assist control are operating.

PCS warning light (If equipped)

Indicates a malfunction in the PCS (Pre-Collision System) or that the system is temporarily unavailable due to the vehicle being extremely hot/cold, or dirt around a front sensor, etc.

Follow the instructions displayed on the multi-information display. If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control) system is disabled, the PCS warning light will illuminate.

LDA (Lane Departure Alert) indicator (If equipped)

The indicator comes on and a warning message is displayed to indicate that the LDA (Lane Departure Alert) system is not available temporarily or has detected a malfunction.

*1: Driver's seat belt buzzer: The driver's seat belt buzzer sounds to alert the driver that his or her seat belt is not fastened. Once the engine switch is turned to the "ON" or "START" position, the buzzer sounds for 6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If the seat belt is still unfastened after 30 seconds, the buzzer will sound intermittently for 10 seconds. Then, if the seat belt is still unfastened, the buzzer will sound in a different tone for 20 more seconds.

Front passenger's seat belt buzzer: The front passenger's seat belt buzzer sounds to alert the front passenger that his or her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is sill unfastened after 30 seconds, the buzzer will sound intermittently for 10 seconds.

Then, if the seat belt is still unfastened, the buzzer will sound in a different tone for 20 more seconds.

*2: Parking brake engaged warning buzzer: A buzzer will sound if the vehicle is driven at a speed of approximately 3 mph (5 km/h) or more.

■SRS warning light This warning light system monitors the airbag sensor assembly, front impact sensors, side impact sensors (front door), side impact sensors (rear), driver's seat position sensor, driver's seat belt buckle switch, front passenger occupant classification system (ECU and sensors), "AIR BAG ON" indicator light, "AIR BAG OFF" indicator light, front passenger's seat belt buckle switch, seat belt pretensioners assemblies, airbags, interconnecting wiring and power sources.

■Front passenger detection sensor, seat belt reminder and warning buzzer

  • If luggage is placed on the front passenger seat, the front passenger detection sensor may cause the warning light to flash and the warning buzzer to sound even if a passenger is not sitting in the seat.
  • If a cushion is placed on the seat, the sensor may not detect a passenger, and the warning light may not operate properly.

■If the malfunction indicator lamp comes on while driving First check the following:

  • Is the fuel tank empty? If it is, fill the fuel tank immediately.
  • Is the fuel tank cap loose? If it is, tighten it securely.

The light will go off after several driving trips.

If the light does not go off even after several trips, contact your Toyota dealer as soon as possible.

■When the tire pressure warning light comes on Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire pressure warning reset switch will not turn off the tire pressure warning light.

■The tire pressure warning light may come on due to natural causes The tire pressure warning light may come on due to natural causes such as natural air leaks and tire inflation pressure changes caused by temperature.

In this case, adjusting the tire inflation pressure will turn off the warning light (after several minutes).

■When a tire is replaced with a spare tire The temporary spare tire is not equipped with a tire pressure warning valve and transmitter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat tire has been replaced with the temporary spare tire. Replace the temporary spare tire with the repaired tire and adjust the tire inflation pressure. The tire pressure warning light will go off after several minutes.

■If the tire pressure warning light frequently comes on after blinking for 1 minute If the tire pressure warning light frequently comes on after blinking for 1 minute when the engine switch is turned to "ON" position, have it checked by your Toyota dealer.

■Warning buzzer In some cases, the buzzer may not be heard because of noisy place or an audio sound.

WARNING

■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.

■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.

  • 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.

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 under-inflated 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.

 

WARNING

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.

 

NOTICE

■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.

    If you think something is wrong

    If a warning message is displayed

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