how to fix the trunk not opening on my Tesla Model S Plaid/Refresh (2021-present)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

508 words

Problem Statement

Learn how to diagnose and fix the trunk not opening issue on your Tesla Model S Plaid (2021-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on the electrical components.
•Allow the vehicle to cool down before starting any work.

Symptoms

•Trunk does not respond to key fob or touchpad button.
•"Trunk Open" message displays on the dashboard but trunk remains closed.
•Manual release or emergency release does not operate.
•Trunk opens intermittently or only with significant force.
•No audible sound or movement from the trunk latch when attempting to open.

Diagnostic Steps

1
Inspect the key fob battery and replace if necessary.
2
Check for software updates via the Tesla app or vehicle settings.
3
Inspect the trunk wiring harness for any visible damage.
4
Test the trunk opening from the Tesla app on a mobile device.
5
Perform a reset of the vehicle's systems by holding down the two scroll wheels on the steering wheel.
6
Use an OBD-II scanner to check for any relevant error codes.

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

•Flathead screwdriver
•Socket set
•OBD-II scanner

Parts Required

•CR2032 battery for key fob
•Replacement wiring harness (if damaged)

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Symptoms

•Trunk does not respond to key fob or touchpad button.

•"Trunk Open" message displays on the dashboard but trunk remains closed.

•Manual release or emergency release does not operate.

•Trunk opens intermittently or only with significant force.

•No audible sound or movement from the trunk latch when attempting to open.

Diagnostic Steps

1
Inspect the key fob battery and replace if necessary.
2
Check for software updates via the Tesla app or vehicle settings.
3
Inspect the trunk wiring harness for any visible damage.
4
Test the trunk opening from the Tesla app on a mobile device.
5
Perform a reset of the vehicle's systems by holding down the two scroll wheels on the steering wheel.
6
Use an OBD-II scanner to check for any relevant error codes.

Solution

1. Preparation

Gather required tools and parts.
Ensure the vehicle is parked on a flat surface and in "Park" mode.
Disconnect the 12V battery to prevent any electrical shorts during repairs.

2. Inspect and Replace Key Fob Battery

Locate the battery compartment on the key fob.
Use a small flathead screwdriver to gently pry open the fob.
Replace with a CR2032 battery, ensuring correct polarity.
Reassemble the fob and test trunk operation.

3. Check Software and Update

Power on the vehicle and navigate to "Software" in the settings menu.
Check for any available software updates and install them.
Restart the vehicle after updates to ensure functionality.

4. Inspect Trunk Wiring

Remove the trunk interior trim to access the wiring harness.
Check all connectors for corrosion or disconnection.
Repair or replace any damaged wires or connectors.

5. Test Trunk Mechanism

Locate the trunk latch mechanism.
Inspect for any signs of physical blockage or damage.
Manually operate the latch to ensure it moves freely; lubricate if necessary.

6. Reconnect Battery

Reconnect the 12V battery.
Ensure all tools and parts are cleared from the trunk area.
Power on the vehicle and test the trunk operation.