why do my Tesla Model S Plaid/Refresh (2021-present) interior lights stay on

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

471 words

Problem Statement

Learn how to diagnose and fix interior lights that stay 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 12V battery before working on electrical components.

Symptoms

•Interior lights remain on after closing doors
•Dome light stays illuminated while driving
•Door Ajar warning on the display
•Battery drain observed when the vehicle is parked
•Lights flicker intermittently when vehicle is in motion

Diagnostic Steps

1
Check the vehicle’s settings in the touchscreen menu for interior light configurations.
2
Inspect all door switches for proper operation and ensure they are not stuck or damaged.
3
Use the Tesla app to check for any alerts or notifications regarding the vehicle's status.
4
Verify that all doors, including the trunk and frunk, are fully closed.
5
Perform a soft reset of the vehicle by holding down the scroll wheels on the steering wheel.
6
Scan for any fault codes using the vehicle's built-in 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

•Trim removal tool
•Gloves

Parts Required

•Replacement door switches

Related Faults

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Diagnostic Steps

1
Check the vehicle’s settings in the touchscreen menu for interior light configurations.
2
Inspect all door switches for proper operation and ensure they are not stuck or damaged.
3
Use the Tesla app to check for any alerts or notifications regarding the vehicle's status.
4
Verify that all doors, including the trunk and frunk, are fully closed.
5
Perform a soft reset of the vehicle by holding down the scroll wheels on the steering wheel.
6
Scan for any fault codes using the vehicle's built-in diagnostic tools.

Solution

1. Preparation

Tools Required: None needed for initial inspection
Ensure the vehicle is parked safely and in a well-lit area.

2. Inspect Door Switches

Sub-steps:
1. Open each door and inspect the door switch (located near the door latch).
2. Clean any debris around the switch area with a soft cloth.
3. Manually press the switch to ensure it clicks and returns to its original position.
4. If a switch appears damaged or stuck, proceed to replace it.

3. Replace Faulty Door Switches

Sub-steps:
1. Disconnect the vehicle's 12V battery (ensure safety by wearing gloves and ensuring no metal tools touch battery terminals).
2. Remove the door panel using a trim removal tool to access the door switch.
3. Disconnect the wiring harness from the faulty switch.
4. Install the new door switch by connecting the wiring harness and securing it in place.
5. Reattach the door panel and ensure all clips are properly seated.
6. Reconnect the 12V battery.

4. Update Software

Sub-steps:
1. Ensure the vehicle is connected to Wi-Fi.
2. Navigate to 'Software' in the touchscreen menu.
3. Check for any available updates and install them if necessary.