my Tesla Model S Original (2012-2020) interior lights won't turn off why

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

519 words

Problem Statement

Learn how to diagnose and fix interior lights that won't turn off in Tesla Model S (2012-2020). Step-by-step guide with symptoms and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems

Symptoms

•Interior lights remain illuminated after closing doors
•Dome light not responding to manual switch
•Battery drain due to lights staying on
•Possible warning message on the display regarding lights
•Delay in lights turning off when exiting the vehicle

Diagnostic Steps

1
Check the overhead light switches to ensure they are in the 'off' position.
2
Inspect the door sensors to confirm they are functioning properly and detecting when doors are closed.
3
Use the vehicle's touchscreen to check for any software updates or alerts regarding lighting issues.
4
Test the interior light timer settings within the vehicle's software.
5
Perform a hard reset of the vehicle's touchscreen system.
6
Check for any blown fuses related to the interior lighting circuit.

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

•Flathead screwdriver

Parts Required

•Replacement overhead light switches (if faulty)
•Replacement door sensors (if damaged)
•Interior light fuse (if blown)

Related Faults

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Diagnostic Steps

1
Check the overhead light switches to ensure they are in the 'off' position.
2
Inspect the door sensors to confirm they are functioning properly and detecting when doors are closed.
3
Use the vehicle's touchscreen to check for any software updates or alerts regarding lighting issues.
4
Test the interior light timer settings within the vehicle's software.
5
Perform a hard reset of the vehicle's touchscreen system.
6
Check for any blown fuses related to the interior lighting circuit.

Solution

1. Preparation

Tools Required: None specifically, but a flathead screwdriver may be needed for fuse access.
Ensure the vehicle is in park and the ignition is off.
Disconnect the 12V battery if necessary (Safety Warning: Disconnect battery before working on electrical systems).

2. Inspect Overhead Light Switches

Locate the overhead light switches.
Confirm that all switches are set to the "off" position.
If they are malfunctioning, consider replacing them.

3. Check Door Sensors

Open each door and ensure the door ajar warnings display correctly on the dashboard.
Clean the door latch sensors with a soft cloth to remove any debris.
If sensors are damaged, replace them.

4. Software Update

Access the Tesla touchscreen and navigate to the "Software" section.
Check for any available updates and install them if necessary.
Restart the touchscreen after updating.

5. Perform Hard Reset

Press and hold both scroll wheels on the steering wheel until the Tesla logo appears on the screen.
Release the scroll wheels to restart the system.

6. Inspect and Replace Fuses

Locate the fuse box (typically under the dashboard or in the trunk).
Remove the cover and locate the fuse for interior lights.
Inspect the fuse for continuity and replace if blown (use the vehicle's manual for the correct amperage).