How can I fix the power liftgate that won't close properly on my 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

515 words

Problem Statement

Learn how to diagnose and repair the power liftgate that won't close properly on your 2020 Toyota Highlander with these step-by-step instructions.

Affected Component

power liftgate

Estimated Time

1-2 hours

Symptoms

•The power liftgate does not close completely.
•The liftgate may reverse direction and reopen after attempting to close.
•There are unusual noises during the closing process (grinding, clicking).
•A warning light or message may appear on the instrument panel.

Diagnostic Steps

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

•Multimeter (optional)
•10mm socket and ratchet
•Phillips screwdriver
•flathead screwdriver
•Torx and socket set

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Solution

Power Liftgate Won’t Close Properly on a 2020 Toyota Highlander

Step 1: Visual Inspection

Tools Required: None
Check for any obstructions in the liftgate's path. Look for debris or items that may be preventing the liftgate from closing fully.
Inspect the liftgate hinges for any signs of damage or misalignment.

Step 2: Check Liftgate Sensors

Tools Required: Multimeter (optional)
Inspect the liftgate's pinch sensors located along the edges of the liftgate. These sensors are designed to prevent the liftgate from closing if there is an obstruction.
If you have a multimeter, check for continuity in the sensor wiring.

Step 3: Test the Liftgate Motor

Tools Required: Multimeter
Disconnect the liftgate motor connector and use the multimeter to check for power at the connector while attempting to close the liftgate. You should see voltage (typically around 12V) when the button is pressed.

Repair Instructions

Step 4: Reset the Liftgate

Disconnect the Battery:
- Tools Required: 10mm socket and ratchet
- Disconnect the negative battery terminal to reset the vehicle’s electronics. Wait for at least 10 minutes.
Reconnect the Battery:
- Reconnect the negative battery terminal and close the liftgate manually to reset the system.
- Test the liftgate operation.

Step 5: Adjust the Liftgate Strikers

Tools Required: 10mm socket and ratchet

Locate the strikers on the vehicle body where the liftgate locks.
Using a 10mm socket, adjust the strikers slightly upward or downward to ensure proper alignment.
Close the liftgate and test the operation.

Step 6: Replace Liftgate Sensors (if necessary)

Tools Required: Phillips screwdriver, flathead screwdriver
Remove the interior trim panel on the liftgate to access the sensors. Use a Phillips screwdriver to remove screws and a flathead screwdriver for clips.
Disconnect the old sensors and replace them with new ones.
Reinstall the interior trim and test the liftgate operation.

Step 7: Inspect & Replace the Liftgate Motor (if necessary)

Tools Required: Torx and socket set
If the motor is faulty, disconnect the liftgate motor connector and remove the motor from its mounting using the appropriate Torx or socket.
Install the new motor in reverse order and reconnect the wiring harness.
Test the liftgate operation.

Final Steps

After any repairs, ensure all components are reassembled correctly.
Test the liftgate multiple times to confirm the problem is resolved.
If issues persist, consult the dealership or a professional technician, as further diagnostics may be required.

Conclusion

By following these steps, you should be able to diagnose and repair the power liftgate issue on your 2020 Toyota Highlander. Always prioritize safety and consult the vehicle's service manual for specific torque specifications and additional information.