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How can I fix the malfunctioning power liftgate on my 2020 Toyota Highlander? - Toyota Highlander
Home/Cars/Toyota/Highlander/Fourth Generation (2020-present)/How can I fix the malfunctioning power liftgate on my 2020 Toyota Highlander?

How can I fix the malfunctioning power liftgate on my 2020 Toyota Highlander?

Toyota Highlander Fourth Generation (2020-present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
612 words

Problem Statement

Learn how to diagnose and repair the malfunctioning power liftgate on your 2020 Toyota Highlander with step-by-step instructions and required tools.

Affected Component
power liftgate
Estimated Time
2-4 hours

Symptoms

  • •Inoperative Liftgate
  • •Partial Operation
  • •Strange Noises
  • •Warning Lights

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Screwdrivers (Phillips and flathead)
  • •Socket set
  • •Torque wrench
  • •Replacement fuses (if necessary)
  • •Electrical contact cleaner (optional)

Additional Information

Affected Component
power liftgate
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
7 items

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Back to Generation
Diagnosing and Repairing a Malfunctioning Power Liftgate on a 2020 Toyota Highlander
Tools Required
  • OBD-II scanner
  • Multimeter
  • Screwdrivers (Phillips and flathead)
  • Socket set
  • Torque wrench
  • Replacement fuses (if necessary)
  • Electrical contact cleaner (optional)

Repair Instructions

Step 1: Battery and Key Fob Check
  1. Replace Key Fob Battery:
    • Open the key fob using a small flathead screwdriver.
    • Replace the battery (CR2032 or as specified) and reassemble the key fob.
Step 2: Inspect the Liftgate Switch
  1. Access the Switch:
    • Remove the trim panel around the liftgate switch using a trim removal tool.
    • Disconnect the switch connector and use a multimeter to check for continuity when the button is pressed.
    • If faulty, replace the switch.
Step 3: Listen for Motor Operation
  1. Locate the Liftgate Motor:
    • Remove the interior trim from the liftgate to access the motor.
    • With the trim removed, test the motor by applying 12V directly to the motor terminals.
    • If the motor operates, the issue may be electrical. If it doesn’t, replace the motor.
Step 4: Check for Obstructions
  1. Inspect Hinges:
    • Check for any debris caught in the liftgate hinges or latch mechanism.
    • Clean and lubricate the hinges with lithium grease.
Step 5: Scan for Trouble Codes
  1. OBD-II Scanner:
    • Connect the OBD-II scanner to the vehicle's port.
    • Review any codes related to the body control module or liftgate system.
    • Refer to the Toyota service manual for specific codes and troubleshooting steps.
Step 6: Check the Fuses
  1. Locate the Fuse Box:
    • Find the fuse box under the dashboard or in the engine compartment (refer to the owner's manual for exact location).
    • Identify the fuse related to the power liftgate system.
    • Use a multimeter or visual inspection to check if the fuse is blown. If blown, replace with the same amperage fuse.
Step 7: Reassemble and Test
  1. Reassemble the Liftgate:
    • Reinstall any trim pieces removed during inspection and repairs.
    • Test the liftgate operation with the key fob, interior button, and manual switch.
Step 8: Final Check
  1. Verify Functionality:
    • Ensure the liftgate opens and closes smoothly and responds to all controls.
    • If issues persist, further electrical troubleshooting may be needed, including checking wiring and connectors for shorts or corrosion.
Conclusion

By following these diagnostic and repair steps, you should be able to identify and resolve issues with the power liftgate on your 2020 Toyota Highlander. If the problem persists after following these steps, consider consulting with a professional technician for further diagnosis.