Toyota Corolla Manuals

Toyota Corolla: Steps to take in an emergency / If a warning light turns on or a warning buzzer sounds

Toyota Corolla 2019-2022 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.

Actions to the warning lights or warning buzzers

■ Brake system warning light (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Brake system warning light

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ High coolant temperature warning light* (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Charging system warning light

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Low engine oil pressure warning light* (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Malfunction indicator lamp (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ SRS warning light (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ ABS warning light

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Brake Override System warning light/Drive-Start Control warning light* (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Electric power steering system warning light (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Low fuel level warning light

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Driver’s and front passenger’s seat belt reminder light (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Rear passengers’ seat belt reminder lights (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermittently for a certain period of time, after the seat belt is fastened and unfastened and the vehicle reaches a certain speed.

■ Tire pressure warning light

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ LTA indicator/LDA indicator (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ RCTA OFF indicator (warning buzzer)

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ PCS warning light

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Slip indicator

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Parking brake indicator

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Brake hold operated indicator

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ iMT indicator

Toyota Corolla. If a warning light turns on or a warning buzzer sounds

■ Warning buzzer

In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.

■ 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.

■ Operation of rear passengers’ seat belt reminder lights

  • The rear passengers’ seat belt reminder lights will illuminate for approximately 60 seconds after either rear door has been opened and closed.
  • If any rear seat belt is fastened and then unfastened, the corresponding light for that seat will illuminate continuously. If either rear door is opened and closed while a rear passengers’ seat belt light is illuminated, it will turn off approximately 60 seconds after the door is closed.

■ SRS warning light

This warning light system monitors the airbag sensor assembly, front impact sensors, side impact sensors (front door), side impact sensors (front), 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, seat belt pretensioners, airbags, interconnecting wiring and power sources.

■ Electric power steering system warning light (warning buzzer)

When the battery charge becomes insufficient or the voltage temporarily drops, the electric power steering system warning light may come on and the warning buzzer may sound.

■ When the tire pressure warning light comes on (vehicles with a tire pressure warning system)

Inspect the tires to check if a tire is punctured.

If a tire is punctured:

If none of the tires are punctured: Turn the engine switch off then turn it to ON. Check if the tire pressure warning light comes on or blinks.

If the tire pressure warning light blinks for approximately 1 minute then stays on

There may be a malfunction in the tire pressure warning system. Have the vehicle inspected by your Toyota dealer immediately.

If the tire pressure warning light comes on

1 After the temperature of the tires has lowered sufficiently, check the inflation pressure of each tire and adjust them to the specified level.

2 If the warning light does not turn off even after several minutes have elapsed, check that the inflation pressure of each tire is at the specified level and perform initialization.

■ The tire pressure warning light may come on due to natural causes (vehicles with a tire pressure warning system)

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 a few minutes).

■ When a tire is replaced with a spare tire (vehicles with a tire pressure warning system)

Vehicles with a compact spare tire: The compact 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 spare tire. Replace the spare tire with the repaired tire and adjust the tire inflation pressure. The tire pressure warning light will go off after a few minutes.

■ Conditions that the tire pressure warning system may not function properly (vehicles with a tire pressure warning system)

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.

■ When the electric power steering system warning light comes on

When the light comes on yellow, the assist to the power steering is restricted. When the light comes on red, the assist to the power steering is lost and handling operations of the steering wheel become extremely heavy. When steering wheel operations are heavier than usual, grip the steering wheel firmly and operate it using more force than usual.

■ If the tire pressure warning light comes on (vehicles with a tire pressure warning system) 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.
  • Vehicles with a compact spare tire: 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.
  • Vehicles with emergency tire puncture repair kit: 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, repair the flat tire by using emergency tire puncture repair kit.
  • 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 (vehicles with a tire pressure warning system)

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 (vehicles with a tire pressure warning system)

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

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