why does 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

440 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

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical components to prevent shocks or shorts

Symptoms

•Interior lights do not turn off after closing doors
•Dome lights stay on while driving
•Dashboard notifications regarding lighting system errors
•Increased battery drain observed
•Difficulty in locking/unlocking the vehicle remotely

Diagnostic Steps

1
Inspect all doors and the trunk to ensure they are fully closed
2
Check the vehicle's settings in the touchscreen interface to confirm interior light settings
3
Use an OBD-II scanner to check for any error codes related to interior lighting or door sensors
4
Inspect the door latch mechanisms for proper operation and sensor functionality
5
Examine the interior light switch for proper function
6
Test the battery voltage to ensure it is within operational parameters

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
•Trim removal tool
•Screwdriver set
•Socket set

Parts Required

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

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Diagnostic Steps

1
Inspect all doors and the trunk to ensure they are fully closed
2
Check the vehicle's settings in the touchscreen interface to confirm interior light settings
3
Use an OBD-II scanner to check for any error codes related to interior lighting or door sensors
4
Inspect the door latch mechanisms for proper operation and sensor functionality
5
Examine the interior light switch for proper function
6
Test the battery voltage to ensure it is within operational parameters

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked in a safe location.
Disconnect the vehicle's 12V battery to prevent electrical shorts during repairs.

2. Inspect Door Latches

Remove the door panels using a trim removal tool.
Check the door latch mechanism for any obstructions or damage.
Test the door sensor switch for continuity using a multimeter; replace if defective.

3. Check Interior Light Switch

Locate the interior light switch on the overhead console.
Remove the overhead console cover carefully.
Inspect the switch for any signs of wear or damage. If malfunctioning, replace the switch.

4. Reset Vehicle Settings

Reconnect the 12V battery.
Power on the vehicle and navigate to the settings menu on the touchscreen.
Reset the interior lighting settings to default and test functionality.