how to fix the tailgate not opening on Toyota Highlander Third Generation (2014-2019)

Solution

1. Preparation

• Gather tools and parts: OBD-II scanner, multimeter, screwdriver set, replacement battery for the key fob, and a new tailgate latch mechanism (if necessary).
• Ensure the vehicle is parked securely and the ignition is off.

2. Inspect Key Fob

• Open the key fob using a small screwdriver.
• Replace the battery with a new one (typically CR2032).
• Reassemble the key fob and test the tailgate operation again.

3. Check and Replace Interior Release Button

• Remove the interior panel of the tailgate using a screwdriver.
• Locate the electrical connector for the interior release button and ensure it is securely connected.
• If necessary, replace the button with a new part:
  • Disconnect the old button.
  • Connect the new button and secure it in place.
• Reinstall the interior panel.

4. Inspect and Repair Tailgate Latch Mechanism

• If the tailgate latch is obstructed or damaged:
  • Disconnect the tailgate latch from the vehicle.
  • Inspect for broken components or debris.
  • Clean any dirt or debris from the latch assembly.
  • If damaged, replace it with a new latch mechanism:
    • Remove screws securing the latch.
    • Install the new latch and secure it with screws.

5. Electrical Connection Check

• Remove the tailgate panel to access the wiring harness.
• Use a multimeter to check for voltage at the tailgate latch.
• Repair or replace any damaged wiring found.

6. Fuse Replacement (if needed)

• Locate the fuse box, typically under the dashboard or in the engine compartment.
• Refer to the owner's manual for the specific fuse related to the tailgate.
• Replace the fuse if it is blown.