why does my Tesla Model 3 Highland (2024-present) trunk not open with the remote

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

445 words

Problem Statement

Learn how to diagnose and fix trunk not opening issue in Tesla Model 3 Highland. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is powered off before working on electrical components.

Symptoms

•Trunk does not open when the remote button is pressed
•No sound or feedback from the trunk latch mechanism
•Trunk opens manually without issues
•Trunk does not respond to mobile app commands
•Indicator light on the remote does not illuminate when pressed

Diagnostic Steps

1
Check the battery of the remote key fob for charge and functionality.
2
Verify that the trunk is not obstructed or locked manually.
3
Inspect the vehicle settings in the touchscreen to ensure the trunk release feature is enabled.
4
Use the Tesla mobile app to attempt to open the trunk and check for connectivity.
5
Scan for any error codes related to the trunk system using Tesla's diagnostic tools.

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
•Small screwdriver

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Check the battery of the remote key fob for charge and functionality.
2
Verify that the trunk is not obstructed or locked manually.
3
Inspect the vehicle settings in the touchscreen to ensure the trunk release feature is enabled.
4
Use the Tesla mobile app to attempt to open the trunk and check for connectivity.
5
Scan for any error codes related to the trunk system using Tesla's diagnostic tools.

Solution

1. Prepare for Repair

Gather necessary tools (OBD-II scanner, multimeter).
Ensure the vehicle is in a safe, level area with the parking brake engaged.

2. Inspect Remote Key Fob

Sub-steps:
1. Open the key fob casing using a small screwdriver.
2. Replace the battery with a new CR2032 battery.
3. Reassemble the fob and test the trunk operation.

3. Check Trunk Settings

Sub-steps:
1. Access the vehicle’s settings through the touchscreen interface.
2. Navigate to "Controls" > "Trunk" and ensure the option for remote operation is activated.
3. Save settings and test the trunk again.

4. Inspect Trunk Mechanism

Sub-steps:
1. Manually open the trunk to inspect the latch and wiring for any visible damage or disconnection.
2. Ensure the latch engages properly when the trunk is closed.
3. If necessary, clean the latch mechanism with a suitable lubricant.

5. Check for Software Updates

Sub-steps:
1. Go to "Software" in the vehicle settings.
2. Check for any available updates and install them if necessary.
3. Restart the vehicle's system after updates and test the trunk again.