why are my Toyota Camry XV70 (2018-2024) brake lights staying on

Toyota Camry XV80 (2025-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

3 min read

514 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix brake lights that stay on in Toyota Camry XV70 (2018-2024). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is securely parked and the key is out of the ignition before performing any electrical repairs.
•Disconnect the battery before working on electrical systems to avoid shorts or electrical shock.

Symptoms

•Brake lights remain on when the ignition is off
•Brake pedal feels spongy or does not return to the upright position fully
•Brake warning light illuminated on the dashboard
•Possible battery drain due to lights being on continuously
•Unusual noise from the brake pedal area when pressed

Diagnostic Steps

1
Inspect the brake pedal position switch for proper alignment and operation.
2
Check the brake fluid level to ensure it’s within the recommended range.
3
Use an OBD-II scanner to check for any related error codes.
4
Visually inspect the wiring and connectors associated with the brake light circuit.
5
Test the brake pedal switch operation with a multimeter to confirm it opens and closes properly.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Socket set
•Multimeter
•OBD-II scanner
•Screwdrivers

Parts Required

•Brake pedal position switch (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the brake pedal position switch for proper alignment and operation.
2
Check the brake fluid level to ensure it’s within the recommended range.
3
Use an OBD-II scanner to check for any related error codes.
4
Visually inspect the wiring and connectors associated with the brake light circuit.
5
Test the brake pedal switch operation with a multimeter to confirm it opens and closes properly.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the ignition is off.
Tools Required: Socket set, multimeter, OBD-II scanner, screwdrivers.

2. Inspect Brake Pedal Position Switch

Locate the brake pedal position switch, typically found at the top of the brake pedal assembly.
Check if the switch is misaligned. Adjust it as necessary to ensure it fully disengages when the brake pedal is not pressed.
If the switch appears damaged or faulty, proceed to replace it.

3. Replace Brake Pedal Position Switch (if necessary)

Disconnect the electrical connector from the brake pedal position switch.
Remove the switch using the appropriate socket or screwdriver.
Install the new switch by reversing the removal process.
Reconnect the electrical connector, ensuring it clicks securely.

4. Test the Brake Light Functionality

Reconnect the battery if it was disconnected.
Turn on the ignition and press the brake pedal to check if the lights operate correctly.
Ensure that the brake lights turn off when the pedal is released.

5. Final Inspection

Ensure all connections are secure and there are no exposed wires.
Check the brake fluid level again and top off if necessary.
Safety Warning: Ensure the vehicle is securely parked and the key is out of the ignition before performing any electrical repairs.