how can I fix the interior lights staying on in my Tesla Model S Original (2012-2020)

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

508 words

Problem Statement

Learn how to diagnose and fix interior lights staying on in Tesla Model S (2012-2020). 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 systems to avoid shocks or shorts.

Symptoms

•Interior lights remain on even when doors are closed
•Dome light stays illuminated while driving
•Battery drains faster than normal
•Notification alert on the dashboard regarding light status
•Malfunction indicator on the vehicle's touchscreen

Diagnostic Steps

1
Check if the doors are fully closed and the door sensors are functioning properly.
2
Inspect the vehicle settings in the touchscreen to verify if the interior light settings are configured correctly.
3
Scan for error codes using the Tesla diagnostic tool to identify any faults related to interior lighting.
4
Examine the door latch mechanisms for any obstructions or damage that may prevent them from signaling the closed position.
5
Test the interior light switch to ensure it is not stuck in the 'on' position.

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

•Torx screwdriver
•Multimeter
•Socket set
•Cleaning cloth
•Lubricant

Parts Required

•Door sensor (if faulty)
•Interior light switch (if defective)

Related Faults

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Diagnostic Steps

1
Check if the doors are fully closed and the door sensors are functioning properly.
2
Inspect the vehicle settings in the touchscreen to verify if the interior light settings are configured correctly.
3
Scan for error codes using the Tesla diagnostic tool to identify any faults related to interior lighting.
4
Examine the door latch mechanisms for any obstructions or damage that may prevent them from signaling the closed position.
5
Test the interior light switch to ensure it is not stuck in the 'on' position.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked and powered down.
Disconnect the 12V battery for safety.

2. Inspect Door Sensors

Tools Required: Torx screwdriver, multimeter
Remove the interior panel covering the door latch.
Check the door sensor for continuity using a multimeter; replace if faulty.
Ensure proper alignment and function of the sensor when the door is closed.

3. Check and Adjust Light Settings

Power on the vehicle and access the touchscreen.
Navigate to "Controls" > "Lights."
Ensure the interior lights are set to turn off when doors are closed.
Reset any settings to factory defaults if necessary.

4. Examine and Clean Door Latch Mechanism

Tools Required: Lubricant, cleaning cloth
Inspect the door latch mechanism for dirt or debris.
Clean the latch with a cloth and apply a light lubricant to ensure smooth operation.
Test the latch to ensure it fully engages when the door is closed.

5. Replace Interior Light Switch (if necessary)

Tools Required: Socket set, replacement light switch
Remove the existing interior light switch from its housing.
Install the new light switch by reversing the removal steps.
Reconnect the battery and test the new switch functionality.