Remain calm and follow these steps when any warning light illuminates or the buzzer sounds. A brief activation that quickly turns off does not always signal a system malfunction. However, if the warning recurs or persists, it is important to have your vehicle inspected by your Toyota dealer without delay.
Consistent or repeated warnings may indicate an underlying issue with one of your vehicle’s safety or operational systems. Addressing these alerts promptly helps ensure that all electronic components and safety features are functioning as intended. For instance, owners of the Toyota bZ4X are advised to monitor such warning signals carefully, as timely inspection can prevent further complications.
Actions to the warning lights or warning buzzers
Brake system warning light (warning buzzer)
Indicates that:
Immediately stop the vehicle in a safe place and contact your Toyota dealer. Continuing to drive the vehicle may be dangerous.
Indicates a malfunction in:
Have the vehicle inspected by your Toyota dealer immediately.
Indicates a malfunction in the
vehicle's charging system
*: This light illuminates on the multi-information display with a message.
Indicates a malfunction in:
Have the vehicle inspected by your Toyota dealer immediately.
ABS warning light
Indicates a malfunction in:
Have the vehicle inspected by your Toyota dealer immediately.
When a buzzer sounds:
Indicates a malfunction in:
Follow the instructions displayed on the multi-information display.
When a buzzer does not sound:
Brake Override System is operating
Release the accelerator pedal and depress the brake pedal.
*: This light illuminates on the multi-information display.
Indicates a malfunction in the
EPS (Electric Power Steering)
system
Indicates that the remaining
charge of the traction battery is
low and charging is required
When the outside temperature is low, this light may turn on
earlier than usual to urge the driver to charge the traction
battery early.
Warns the driver and/or front
passenger to fasten their seat
belts
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.
*: Driver's seat belt warning buzzer:
The driver's seat belt warning buzzer sounds to alert the driver that his or her seat belt is not fastened. Once the power switch is turned to ON, the buzzer sounds. If the seat belt is still unfastened, the buzzer sounds intermittently for a certain period of time after the vehicle reaches a certain speed.
Front passenger's seat belt warning buzzer: The front passenger's seat belt warning buzzer sounds to alert the front 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 vehicle reaches a certain speed.
Warns the rear passengers to
fasten their seat belts
*: Rear passengers' seat belt warning buzzer:
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
When the light comes on after
blinking for approximately 1
minute (a buzzer does not sounds):
Malfunction in the tire pressure warning system
When the light comes on (a buzzer sounds): Low tire inflation pressure from natural causes
Low tire inflation pressure from flat tire
LDA indicator (warning buzzer)
Indicates a malfunction in the
LDA (Lane Departure Alert).
LTA indicator (warning buzzer)
Indicates a malfunction in the
LTA (Lane Tracing Assist)
PDA indicator (warning buzzer)
Indicates a malfunction in the
PDA (Proactive Driving
Assist).
Driving assist information indicator
The following systems may be
malfunctioning.
Follow the instructions displayed on the multi-information display.
Indicates one of the following systems is malfunctioning or disabled.
Follow the instructions displayed on the multi-information display.
Intuitive parking assist OFF indicator (warning buzzer)
When a buzzer sounds:
Indicates a malfunction in the intuitive parking assist function
Have the vehicle inspected by your Toyota dealer immediately.
When a buzzer does not sound: Indicates that the system is temporarily unavailable, possibly due to a sensor being dirty or covered with ice, etc.
Follow the instructions displayed on the multi-information display.
Indicates a malfunction in the
cruise control.
Follow the instructions displayed on the multi-information display.
Indicates a malfunction in the
dynamic radar cruise control.
Indicates a malfunction in the
PCS (Pre-Collision System).
Illuminates when the PCS (Pre-Collision System) or VSC (Vehicle Stability Control) system is disabled.
Indicates a malfunction in:
It is possible that the parking
brake is not fully engaged or
released
This light comes on the parking brake is not released. If the light turns off after the parking brakes is fully released, the system is operating normally.
Brake hold operated indicator
Indicates a malfunction in the
brake hold system
Warning Buzzer and Sensor Alerts
In noisy environments, the buzzer might not always be heard clearly. Additionally, if you place luggage on the front passenger seat, the detection sensor may erroneously trigger the warning light and buzzer-even when no occupant is present. Conversely, if a cushion is laid on the seat, the sensor might fail to register an actual passenger, causing the alert not to function as expected.
SRS Warning Light
The SRS (Supplemental Restraint System) warning light signals potential issues with components such as the airbag sensor assembly, front and side impact sensors (including those on the front door), occupant classification sensors, driver’s seat position sensor, as well as seat belt buckle switches and related wiring harnesses. This comprehensive alert is integral to ensuring that all airbag system functions are operational.
Electric Power Steering System Warning
Should the 12-volt battery become undercharged or if its voltage temporarily drops, you might notice the electric power steering warning light illuminate and the associated buzzer sound. This indicates a reduction or loss of steering assistance.
Handling the Tire Pressure Warning Light
When the tire pressure warning light activates, begin by inspecting all tires for punctures. If none are found, turn the power off and then back on to see if the warning light resets or begins blinking. For instance, if the light blinks for about one minute before remaining steadily lit, this may suggest a malfunction in the tire pressure warning system-warranting an immediate inspection.
In cases where the light simply turns on, once the tires have cooled, check each tire’s inflation pressure and adjust them to the specified levels. If, after several minutes, the light still does not turn off, recheck the pressures and run the tire pressure setting procedure. Persistent warnings require a prompt visit to a Toyota dealer.
Natural factors-such as gradual air leaks and temperature-induced pressure changes-can also cause the tire pressure warning light to activate. In these situations, simply adjusting the pressure should resolve the issue once the system rechecks after a few minutes.
TPMS Malfunction Indicator
Your vehicle’s TPMS (Tire Pressure Monitoring System) malfunction indicator is integrated with the low tire pressure warning light. When a malfunction is detected-perhaps due to incompatible tires or wheels-the indicator will flash for approximately one minute before remaining continuously illuminated on subsequent startups until the issue is resolved.
Conditions That May Affect System Performance
WARNING: ABS and Brake System Alerts
If both the ABS and the brake system warning lights remain illuminated, stop your vehicle immediately in a safe location and contact your Toyota dealer. Loss of brake assist and potential ABS failure can render the vehicle extremely unstable during braking, raising the risk of a serious accident.
Electric Power Steering Details
When the electric power steering warning light appears in yellow, the steering assistance is merely restricted; if it turns red, the assistance is lost altogether, making the steering significantly heavier. In such cases, grip the steering wheel firmly and exert extra force.
Tire Pressure Warning Precautions
If the tire pressure warning light comes on, pull over safely at once and adjust the tire pressures. Should the warning continue even after adjustments, inspect the tires for flatness and, if necessary, use the emergency tire puncture repair kit. Avoid abrupt maneuvers and heavy braking, as these could result in loss of vehicle control-especially if tire deterioration has set in.
Note on Sudden Blowouts
In the event of a tire blowout or sudden air leakage, the tire pressure warning system might not activate immediately. Remain alert and conduct regular tire maintenance.
Tire Maintenance Best Practices
Check each tire-including the spare, if available-monthly when cold, and inflate them to the pressure recommended on the vehicle placard or tire inflation pressure label. If your vehicle is fitted with tires that differ from the specifications provided, determine and maintain the proper inflation pressure accordingly. Remember, while the TPMS is a helpful guide, it is not a substitute for regular tire maintenance. Maintaining correct tire pressure is crucial for optimal fuel efficiency, prolonged tire life, reliable handling, and effective braking.
NOTICE
To ensure proper operation of the tire pressure warning system, always use tires that match the manufacturer’s specifications. Installing tires of different sizes or from different makers may compromise system performance.
Overall Recommendations
Consistent vigilance and maintenance of your tire pressure and related systems are fundamental for safe driving. For owners of the Toyota bZ4X, timely attention to these warning and malfunction indicators is key to preserving vehicle performance while preventing avoidable damage. Regularly monitoring your tire pressure and ensuring all system components function as designed will help maintain the integrity and safety of your driving experience.
If Your Vehicle Needs to be Towed
If a Warning Message is DisplayedTire Pressure Warning System – Advanced Detection and Alerts
Your vehicle is equipped with an advanced tire pressure monitoring system that employs specialized warning valves and transmitters to identify low tire inflation before it becomes a serious problem. This technology continually monitors your tires to help prevent safety hazards associated with un ...
Securing Floor Mats for Safe Operation
Proper floor mat installation prevents movement that could interfere with the pedals. Always use floor mats
specifically designed for your Toyota bZ4X, ensuring they fit securely to prevent slippage.
Observe the following
before starting off in the
vehicle to ensure safety of
driving.
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