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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

470 words

Problem Statement

Learn how to diagnose and fix the issue of 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 vehicle's battery before working on electrical components to avoid shorts or shocks.

Symptoms

•Interior lights remain on while driving
•Possible battery drain due to lights staying on
•Warning messages on the display regarding doors being open
•Lights flickering intermittently
•Inconsistent operation of other electronic components

Diagnostic Steps

1
Inspect all doors for proper closure and alignment.
2
Use the vehicle's touchscreen to check for any alerts or error messages regarding door status.
3
Scan the vehicle's systems using a diagnostic tool for any error codes related to the lighting or door sensors.
4
Check the door latch sensors for dirt or damage.
5
Inspect the interior light switch settings on the touchscreen to ensure they are set correctly.
6
Verify if the issue occurs with all doors or only specific ones.

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
•Socket set
•Trim removal tools
•Electrical contact cleaner
•Silicone-based lubricant

Parts Required

•Door latch sensor (if replacement is necessary)

Related Faults

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Diagnostic Steps

1
Inspect all doors for proper closure and alignment.
2
Use the vehicle's touchscreen to check for any alerts or error messages regarding door status.
3
Scan the vehicle's systems using a diagnostic tool for any error codes related to the lighting or door sensors.
4
Check the door latch sensors for dirt or damage.
5
Inspect the interior light switch settings on the touchscreen to ensure they are set correctly.
6
Verify if the issue occurs with all doors or only specific ones.

Solution

1. Preparation

Ensure the vehicle is parked in a safe location and is powered off.
Gather tools and components needed for the repair.

2. Inspect and Clean Door Latch Sensors

Sub-step 1: Open each door and visually inspect the door latch mechanism and sensor.
Sub-step 2: Clean any debris or dirt from the latch and sensor using a soft cloth and electrical contact cleaner.
Sub-step 3: Ensure the latch is properly lubricated with a silicone-based lubricant.

3. Test Door Closure

Sub-step 1: Close all doors and verify if they align properly with the body of the vehicle.
Sub-step 2: Open and close each door multiple times to check if the interior lights turn off when the doors are closed.

4. Reprogram Interior Lighting Settings

Sub-step 1: Power on the vehicle and navigate to the settings menu on the touchscreen.
Sub-step 2: Select the 'Lights' option and ensure that the interior lighting is set to the desired configuration.
Sub-step 3: Restart the vehicle to reset the lighting system.

5. Replace Faulty Door Latch Sensor (if necessary)

Sub-step 1: If a specific door latch sensor is identified as faulty, order a replacement part.
Sub-step 2: Remove the interior door panel using a suitable socket set and trim tools.
Sub-step 3: Disconnect the electrical connector from the faulty door latch sensor.
Sub-step 4: Install the new door latch sensor and reassemble the door panel.
Sub-step 5: Test the operation of the interior lights after the installation.

Tools Required:

OBD-II scanner
Socket set
Trim removal tools
Electrical contact cleaner
Silicone-based lubricant

Parts Required:

Door latch sensor (if replacement is necessary)

Estimated Repair Time: 1-2 hours

Safety Warnings:

Disconnect the vehicle's battery before working on electrical components to avoid shorts or shocks.