Toyota bZ4X Owner's Manual: Checking and Replacing Fuses

If any electrical components are not working, a blown fuse may be the cause. In such cases, check and replace the fuses as needed.

Procedure for Checking and Replacing Fuses

1. Turn off the power switch.

Ensure that the charging connector is disconnected, and do not operate the Remote Air Conditioning System during this procedure.

2. Open the fuse box cover.

• For the motor compartment fuse box:

Push in the tab and carefully lift off the lid.

• For the left side instrument panel fuse box:

Remove the lid as instructed.

3. Pull out the fuse using the designated pullout tool (only applicable for Type A fuses).

4. Inspect the fuse to determine if it is blown.

Replace any blown fuse with a new one that has the correct amperage rating, which is usually indicated on the fuse box lid.

Type A Fuses

1. Normal fuse
2. Blown fuse

Type B Fuses

1. Normal fuse
2. Blown fuse

Type C Fuses

1. Normal fuse
2. Blown fuse

Recommendations

Regularly checking and replacing blown fuses is essential for maintaining the electrical integrity of your vehicle. Accurate fuse maintenance prevents potential electrical malfunctions and can help avoid more costly repairs. For owners of the Toyota bZ4X, ensuring that your fuse system is in proper working order is part of a comprehensive approach to keeping your vehicle safe, efficient, and reliable. By following these detailed procedures, you boost the longevity of your electrical components and support optimal performance every time you hit the road.

After a Fuse is Replaced

• When reinstalling the fuse box lid, ensure that the securing tab is firmly in place to guarantee proper closure.
• If the circuit still does not operate after replacing a fuse, it may indicate that the bulb needs to be replaced instead.
• If the fuse blows again after replacement, have the vehicle inspected by a Toyota dealer immediately.

If There Is an Overload in a Circuit

Fuses are designed to blow when an overload occurs, serving as a safeguard that protects the wiring harness from damage. This built-in safety measure helps prevent further electrical complications.

When Replacing an Electronic Component

Toyota recommends using only genuine Toyota parts when replacing electronic components such as bulbs or lights. Many of these components are connected to circuits that are engineered specifically to prevent overload, so using non-genuine parts or items not designed for your vehicle may result in malfunction.

WARNING

To Prevent System Breakdowns and Vehicle Fire

It is vital to follow these precautions exactly-failure to do so may cause severe damage to the vehicle or even lead to a fire or personal injury.

• Never use a fuse with a higher amperage rating than specified, or substitute any other object for a proper fuse.
• Always install a genuine Toyota fuse or an approved equivalent. Never replace a fuse temporarily with a wire.
• Do not modify fuses or fuse boxes in any way.

NOTICE

Before Replacing Fuses

Always have the cause of any electrical overload diagnosed and repaired by your Toyota dealer as soon as possible. Addressing the root cause is essential to prevent recurring issues and ensure the integrity of your vehicle's electrical system.

Regular inspection and prompt replacement of blown fuses are key to maintaining a safe and reliable electrical system. By following these detailed steps, you protect your vehicle against electrical malfunctions and potential fire hazards. For owners of the Toyota bZ4X, these maintenance practices not only help preserve the sophisticated engineering of your vehicle but also contribute significantly to a safer driving experience. Adopting proper fuse management ensures that your vehicle’s circuits function flawlessly, ultimately preventing unexpected breakdowns and costly repairs.

Headlight aim

Vertical movement adjusting bolts

1. Adjustment bolt A
2. Adjustment bolt B

Before checking the headlight aim

• Park the vehicle on level ground.
•  Make sure the tire inflation pressure is at the specified level.
•  Have someone sit in the driver's seat.
•  Bounce the vehicle several times.

Adjusting the headlight aim

1. Using a Phillips-head screwdriver, turn bolt A in either direction.

Remember the turning direction and the number of turns.

2. Turn bolt B the same number of turns and in the same direction as step 1.

If the headlight cannot be adjusted using this procedure, take the vehicle to your Toyota dealer to adjust the headlight aim.

Light bulbs

If any exterior light does not turn on, have it replaced by your Toyota dealer.

LED lights

The lights consist of a number of LEDs. If any of the LEDs burn out, take your vehicle to your Toyota dealer to have the light replaced.

Condensation build-up on the inside of the lens

Temporary condensation build-up on the inside of the headlight lens does not indicate a malfunction.

Contact your Toyota dealer for more information in the following situations:

• Large drops of water have built up on the inside of the lens.
• Water has built up inside the headlight.

When replacing an electronic component, such as a lights, etc.