why does my Tesla Model S Plaid/Refresh (2021-present) interior lights stay on all the time

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

549 words

Problem Statement

Learn how to diagnose and fix the issue of interior lights staying on in Tesla Model S Plaid/Refresh. Step-by-step guide with diagnostic procedures.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle from charging before inspecting electrical components.

Symptoms

•Interior lights do not turn off after closing doors
•Dome light remains on while driving
•Malfunctioning ambient lighting features
•Increased battery drain due to lights staying on
•Dashboard alerts regarding interior lighting

Diagnostic Steps

1
Check the vehicle settings for interior light timeout options in the touchscreen menu.
2
Inspect door switches for proper operation and ensure they are not stuck.
3
Use the Tesla mobile app to check for any active alerts or notifications related to interior lighting.
4
Perform a soft reset of the vehicle by holding down the scroll wheels on the steering wheel until the screen resets.
5
Check for any software updates available for the vehicle that may address lighting issues.
6
Inspect the wiring and connectors for the interior lights for any signs of 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

•OBD-II scanner
•Multimeter
•Tools for removing trims

Parts Required

•Replacement door switch (if faulty)
•Wiring harness connectors (if damaged)

Related Faults

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Diagnostic Steps

1
Check the vehicle settings for interior light timeout options in the touchscreen menu.
2
Inspect door switches for proper operation and ensure they are not stuck.
3
Use the Tesla mobile app to check for any active alerts or notifications related to interior lighting.
4
Perform a soft reset of the vehicle by holding down the scroll wheels on the steering wheel until the screen resets.
5
Check for any software updates available for the vehicle that may address lighting issues.
6
Inspect the wiring and connectors for the interior lights for any signs of damage or corrosion.

Solution

1. Preparation

Gather necessary tools: OBD-II scanner (if necessary for diagnostics), multimeter, and tools for removing trims (if needed).
Ensure the vehicle is parked safely and turned off.

2. Check Interior Light Settings

Access the touchscreen interface.
Navigate to 'Controls' > 'Lighting' and verify the settings for 'Interior Light Timeout.'
Adjust the settings if necessary to ensure they are set to turn off after a period of inactivity.

3. Inspect Door Switches

Open each door and check the door switches located on the door frame.
Clean any debris or obstructions around the switches.
Test the switches for proper operation by pressing them manually and observing if the interior lights respond.

4. Reset Vehicle Systems

Perform a soft reset by pressing and holding both scroll wheels on the steering wheel until the touchscreen reboots.
Allow the vehicle to reset and check if the interior lights turn off after a few moments.

5. Software Update

Connect to Wi-Fi and check for software updates through the touchscreen under 'Software' settings.
Install any available updates and reboot the vehicle to see if the issue is resolved.

6. Wiring and Connector Inspection

If the above steps do not resolve the issue, visually inspect the wiring harness and connectors associated with the interior lighting system.
Use a multimeter to check for continuity in the wiring to ensure there are no shorts or breaks.