Tesla Model S Plaid interior lights stay on when the door is closed, how to fix?

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

480 words

Problem Statement

Learn how to diagnose and fix the issue of interior lights staying on in Tesla Model S Plaid. 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

•Disconnect the battery before working on electrical components to prevent short circuits.

Symptoms

•Interior lights remain on when doors are closed
•Possible battery drain due to lights being on
•Door ajar warning message may appear on the dashboard
•Increased heat inside the cabin when parked
•Unusual behavior from other electrical components

Diagnostic Steps

1
Inspect the door switch for physical damage or debris that could prevent it from closing properly.
2
Use the vehicle's touchscreen to check for any alerts or warnings related to the door sensors.
3
Perform a soft reset of the vehicle’s software by holding down the two scroll wheels on the steering wheel until the screen reboots.
4
Check the vehicle's settings to ensure that interior lights are configured correctly.
5
Test the door switch functionality by manually activating it and observing if it triggers the interior lights correctly.
6
Scan for fault codes using the Tesla service tool to identify any electronic malfunctions.

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

•Screwdriver set
•Cleaning cloth

Parts Required

•New door switch compatible with Tesla Model S Plaid

Related Faults

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Diagnostic Steps

1
Inspect the door switch for physical damage or debris that could prevent it from closing properly.
2
Use the vehicle's touchscreen to check for any alerts or warnings related to the door sensors.
3
Perform a soft reset of the vehicle’s software by holding down the two scroll wheels on the steering wheel until the screen reboots.
4
Check the vehicle's settings to ensure that interior lights are configured correctly.
5
Test the door switch functionality by manually activating it and observing if it triggers the interior lights correctly.
6
Scan for fault codes using the Tesla service tool to identify any electronic malfunctions.

Solution

1. Preparation

Gather necessary tools and components.
Ensure the vehicle is parked with the engine off and in a safe environment.
Disconnect the vehicle's 12V battery for safety.

2. Inspect and Clean the Door Switch

Tools Required: Screwdriver set, cleaning cloth.
Remove the door panel carefully using a screwdriver to access the door switch.
Inspect the door switch for any physical damage or debris.
Clean the switch area using a soft cloth to remove any grime.

3. Replace the Door Switch (if necessary)

Parts Required: New door switch compatible with Tesla Model S Plaid.
Disconnect the wiring harness from the old door switch.
Install the new door switch by connecting the wiring harness securely.
Reattach the door panel and ensure it is fitted correctly.

4. Reconnect the Battery

Reconnect the 12V battery and ensure all connections are secure.

5. Test the System

Open and close the door to verify that the interior lights turn off properly.
Monitor the dashboard for any warning messages.