my Tesla Model S Original (2012-2020) interior lights stay on

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

534 words

Problem Statement

Learn how to diagnose and fix interior lights that stay on in Tesla Model S (2012-2020). 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 electrical systems to avoid short circuits

Symptoms

•Interior lights do not turn off after closing doors
•Dome lights remain on while driving
•Battery drain may occur due to prolonged light activation
•Door open warning may be displayed on the dashboard
•Lights may flicker when the vehicle is in motion

Diagnostic Steps

1
Inspect all door switches for proper operation and ensure they are not stuck in the open position
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the interior lighting system
3
Check the vehicle's settings via the touchscreen to ensure interior lights are configured correctly
4
Inspect the wiring and connectors for the interior light circuit for any signs of damage or corrosion
5
Perform a reset of the vehicle's systems by powering off and restarting the vehicle

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
•Flashlight
•Trim removal tool

Parts Required

•Replacement door switches (if faulty)
•Wiring connectors (if damaged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect all door switches for proper operation and ensure they are not stuck in the open position
2
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the interior lighting system
3
Check the vehicle's settings via the touchscreen to ensure interior lights are configured correctly
4
Inspect the wiring and connectors for the interior light circuit for any signs of damage or corrosion
5
Perform a reset of the vehicle's systems by powering off and restarting the vehicle

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, and a flashlight.
Ensure vehicle is parked on a level surface and turned off.
Disconnect the 12V battery for safety.

2. Inspect Door Switches

Sub-steps:
1. Locate the door switches on each door frame.
2. Remove the door panel if necessary to access the switch (use a trim removal tool).
3. Test each switch with a multimeter to ensure proper function (should read closed circuit when pressed).
4. Replace any faulty switches.

3. Verify Vehicle Settings

Sub-steps:
1. Turn on the vehicle and access the main touchscreen.
2. Navigate to 'Controls' > 'Lights'.
3. Ensure that 'Interior Lights' settings are set to automatically turn off after a specified duration.
4. Adjust any settings as necessary and test to see if the lights turn off.

4. Inspect Wiring and Connectors

Sub-steps:
1. With the vehicle off, visually inspect the wiring harnesses leading to the interior lights for any signs of wear or damage.
2. Check connectors for corrosion or loose connections.
3. Repair or replace any damaged wiring or connectors as needed.

5. Reset Vehicle Systems

Sub-steps:
1. Turn off the vehicle completely.
2. Wait for at least 2 minutes.
3. Restart the vehicle to reset the internal systems.
4. Check if the interior lights function correctly after reset.