how to troubleshoot the power liftgate not working on my Toyota Highlander

Toyota Highlander Third Generation (2014-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

499 words

Problem Statement

Learn how to troubleshoot and fix the power liftgate issue on your Toyota Highlander. Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent shock or short-circuiting.

Symptoms

•Power liftgate fails to open or close
•No audible sound or movement when the button is pressed
•Check engine light or warning indicator on the dashboard (if applicable)
•Manual operation of the liftgate is difficult or requires excessive force
•Liftgate partially opens or closes but then stops suddenly

Diagnostic Steps

1
Inspect the liftgate switch for physical damage or obstruction.
2
Check the vehicle's battery voltage to ensure proper power supply.
3
Use an OBD-II scanner to look for relevant error codes.
4
Examine the fuses related to the liftgate operation in the fuse box.
5
Test the liftgate motor by applying direct battery voltage to it.
6
Inspect wiring and connectors for signs of damage or corrosion.

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
•Fuse puller
•Socket set
•Screwdriver set

Parts Required

•Replacement fuse (if blown)
•Liftgate switch (if faulty)
•Liftgate motor (if defective)

Related Faults

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Symptoms

•Power liftgate fails to open or close

•No audible sound or movement when the button is pressed

•Check engine light or warning indicator on the dashboard (if applicable)

•Manual operation of the liftgate is difficult or requires excessive force

•Liftgate partially opens or closes but then stops suddenly

Diagnostic Steps

1
Inspect the liftgate switch for physical damage or obstruction.
2
Check the vehicle's battery voltage to ensure proper power supply.
3
Use an OBD-II scanner to look for relevant error codes.
4
Examine the fuses related to the liftgate operation in the fuse box.
5
Test the liftgate motor by applying direct battery voltage to it.
6
Inspect wiring and connectors for signs of damage or corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle's battery to ensure safety during repairs.

2. Inspect and Replace Fuses

Locate the fuse box in the engine compartment and/or inside the vehicle.
Identify the fuse for the power liftgate (refer to the owner's manual for the specific location).
Remove the fuse using a fuse puller or pliers.
Inspect the fuse for continuity; replace if blown.
Reinstall the new fuse and reconnect the battery.

3. Test the Liftgate Switch

Remove the trim panel covering the liftgate switch.
Disconnect the electrical connector from the switch.
Using a multimeter, test for continuity when the switch is pressed.
Replace the switch if it does not show continuity.

4. Test the Liftgate Motor

Locate the liftgate motor (usually near the hinge of the liftgate).
Disconnect the motor's electrical connector.
Using a multimeter, verify voltage at the connector when the switch is activated.
If voltage is present, apply direct battery voltage to the motor terminals to check for operation.
Replace the motor if it does not function when powered directly.

5. Reassemble and Test

Reconnect all electrical connectors and replace any trim panels removed.
Reconnect the vehicle's battery.
Test the liftgate operation using the switch and the key fob.