why are 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

4 min read

603 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

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle's battery before working on electrical systems to avoid short circuits.

Symptoms

•Interior lights remain on after the vehicle is turned off
•Battery drain observed due to prolonged light usage
•Warning messages related to doors or trunk being open
•Difficulty with the vehicle locking/unlocking automatically
•Unresponsive interior light controls

Diagnostic Steps

1
Inspect the door switches for proper function and ensure they are not stuck or malfunctioning.
2
Check the trunk and glove compartment lights to ensure they are not staying on due to open compartments.
3
Review the vehicle settings through the touchscreen to ensure interior light settings are correctly configured.
4
Use the Tesla app to check for any alerts or notifications that may indicate an issue.
5
Scan for any error codes using Tesla's diagnostic tools or OBD-II scanner.
6
Examine the wiring and connections related to the interior lighting system for damage or corrosion.

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

•Basic socket set
•Multimeter
•Flathead screwdriver

Parts Required

•Replacement door switches (if faulty)
•Replacement trunk switch (if faulty)
•Replacement glove compartment switch (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the door switches for proper function and ensure they are not stuck or malfunctioning.
2
Check the trunk and glove compartment lights to ensure they are not staying on due to open compartments.
3
Review the vehicle settings through the touchscreen to ensure interior light settings are correctly configured.
4
Use the Tesla app to check for any alerts or notifications that may indicate an issue.
5
Scan for any error codes using Tesla's diagnostic tools or OBD-II scanner.
6
Examine the wiring and connections related to the interior lighting system for damage or corrosion.

Solution

1. Preparation

Gather necessary tools: basic socket set, multimeter, and a flathead screwdriver.
Ensure the vehicle is parked safely and turned off.

2. Inspect Door Switches

Step 1: Open each door and visually inspect the door switches located on the door frame.
Step 2: Manually press each door switch to confirm it is functioning properly.
Step 3: If a switch is stuck, clean it with a suitable cleaner and lubricate it if necessary.

3. Check Trunk and Glove Compartment Lights

Step 1: Open the trunk and glove compartment to check if their lights are remaining on.
Step 2: Inspect the switches for these compartments to ensure they are functioning correctly.
Step 3: Replace any faulty switches if necessary.

4. Review Vehicle Settings

Step 1: Turn on the vehicle and navigate to the "Settings" menu on the touchscreen.
Step 2: Select "Lights" and check the settings for interior lighting to ensure they are set to auto or off as desired.
Step 3: Adjust settings as needed and turn the vehicle off to see if the lights respond correctly.

5. Wiring Inspection

Step 1: Use a multimeter to check for power at the interior light connectors.
Step 2: Inspect the wiring harnesses for any signs of fraying or damage.
Step 3: Repair or replace any damaged wiring as necessary.

6. Reset System

Step 1: Perform a soft reset of the vehicle by holding down the two scroll wheels on the steering wheel until the screen reboots.
Step 2: After the reboot, check if the interior lights now function correctly.