How do I fix a malfunctioning electronic parking brake in my Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

Error Code: C1391, C1410

4 min read

697 words

Problem Statement

Learn how to diagnose and repair a malfunctioning electronic parking brake in your Toyota Highlander with step-by-step instructions.

Error Code

C1391, C1410

Affected Component

Electronic Parking Brake (EPB)

Estimated Time

2-4 hours

Symptoms

•EPB warning light illuminates on the dashboard
•Inability to engage/disengage the electronic parking brake
•Grinding or clicking noises when attempting to activate the EPB
•Error messages on the Multi-Information Display

Diagnostic Steps

1
Visual inspection of the electronic parking brake switch and wiring
2
Use a diagnostic scan tool to retrieve fault codes
3
Check the EPB actuator for functionality
4
Inspect the micro switch in the EPB button
5
Check fuses related to the EPB system

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

•OBD-II Scanner
•Multimeter
•Socket Set
•Screwdrivers
•Torque Wrench
•Brake Bleeding Kit

Related Faults

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Solution

Tools Required

OBD-II Scanner
Multimeter
Socket Set
Screwdrivers
Torque Wrench
Brake Bleeding Kit (if necessary)

Repair Instructions

Step 1: Resetting the EPB System

Disconnect the Battery:
- Turn off the ignition and disconnect the negative battery terminal using a wrench.
- Wait for about 10 minutes to allow the system to reset.
Reconnect the Battery:
- Reconnect the negative terminal and ensure it's secure.
Test the EPB:
- Start the vehicle and test the electronic parking brake by pressing the button.

Step 2: Replacing the EPB Actuator (if necessary)

Raise the Vehicle:
- Use a hydraulic jack to lift the rear of the vehicle and secure it with jack stands.
Remove the Wheel:
- Use a socket to remove the lug nuts and take off the rear wheel.
Access the Brake Caliper:
- Remove the caliper bolts using a socket and ratchet.
- Slide the caliper off the rotor and support it with a bungee cord or wire (do not let it dangle).
Remove the EPB Actuator:
- Disconnect the electrical connector from the EPB actuator.
- Remove the actuator mounting bolts and slide the actuator out.
Install the New EPB Actuator:
- Position the new actuator in place and secure it with the mounting bolts.
- Reconnect the electrical connector.
Reassemble the Brake System:
- Reinstall the caliper and tighten the caliper bolts to manufacturer specifications.
- Reinstall the wheel and torque the lug nuts to the specified value.

Step 3: Bleed the Brakes (if necessary)

If brake fluid was lost during the actuator replacement:

Locate the Brake Bleeding Valve:
- On the brake caliper, locate the bleeder valve.
Bleed the Brakes:
- Use a brake bleeding kit. Attach a clear tube to the bleeder valve and place the other end in a container.
- Have an assistant press the brake pedal while you open the valve, allowing fluid to escape until no air bubbles are seen.
- Close the valve and repeat until the fluid runs clear.
Check Brake Fluid Level:
- Ensure the brake fluid reservoir is filled to the recommended level.

Final Steps

Test Drive:
- Drive the vehicle to ensure the EPB engages and disengages as intended.
- Monitor for any warning lights on the dashboard.
Recheck for Codes:
- After repairs, use the OBD-II scanner again to check for any remaining fault codes.

Conclusion

If the issue persists after these steps, it may be necessary to consult a qualified technician or dealership, as there may be deeper electrical issues or software updates required for the EPB system.