how to fix the trunk not opening on Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

437 words

Problem Statement

Learn how to diagnose and fix the trunk not opening issue on Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, 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 electrical components to avoid short circuits.

Symptoms

•Trunk release button does not respond
•Trunk will not open using the key fob
•Trunk will not open using the touchscreen
•Audible clicking noise when attempting to open
•Warning message on the dashboard related to trunk

Diagnostic Steps

1
Inspect the key fob battery and replace if necessary.
2
Use the touchscreen to open the trunk and check for error messages.
3
Check the trunk latch for visible damage or obstruction.
4
Scan the vehicle for any error codes using an OBD-II scanner.
5
Verify the trunk release wiring for continuity using a multimeter.
6
Test the trunk latch actuator by applying direct power to it.

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
•Screwdriver set
•Lubricant
•Replacement key fob battery (CR2032)

Parts Required

•Trunk latch actuator (if replacement is necessary)
•Key fob battery (CR2032)

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Diagnostic Steps

1
Inspect the key fob battery and replace if necessary.
2
Use the touchscreen to open the trunk and check for error messages.
3
Check the trunk latch for visible damage or obstruction.
4
Scan the vehicle for any error codes using an OBD-II scanner.
5
Verify the trunk release wiring for continuity using a multimeter.
6
Test the trunk latch actuator by applying direct power to it.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle's 12V battery to ensure safety.

2. Inspect and Clean the Trunk Latch

Remove any debris around the trunk latch area.
Check the latch mechanism for any signs of rust or damage.
Clean the latch with a suitable lubricant to ensure smooth operation.

3. Check and Replace the Key Fob Battery

Open the key fob and replace the battery with a new CR2032 battery.
Ensure the fob is reassembled correctly.

4. Test and Replace the Trunk Actuator

Access the trunk actuator by removing the trunk interior panel.
Identify the actuator and test it for functionality by applying direct power (12V) from a battery or power source.
If the actuator does not function, replace it with a new component.
Reassemble the trunk interior panel.

5. Reconnect Battery and Test

Reconnect the 12V battery.
Test the trunk operation using the key fob and touchscreen.