my Tesla Model S Plaid/Refresh (2021-present) interior lights stay on what's causing it

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

514 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 and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle from any power source before working on electrical components.

Symptoms

•Interior lights remain on continuously
•Doors may not lock or unlock properly
•Dashboard display might show alerts related to doors or lighting
•Increase in battery drain due to lights staying on
•Possible malfunction of other electrical components within the vehicle

Diagnostic Steps

1
Check the vehicle's settings through the touchscreen for any changes to the interior light settings.
2
Inspect each door to ensure they are closing properly and that the door sensors are functioning correctly.
3
Use the Tesla app or onboard diagnostics to check for any alerts or notifications regarding the lighting system.
4
Perform a soft reset of the vehicle’s software by holding down the two scroll wheels on the steering wheel until the screen reboots.
5
Test the interior light switch to ensure it is not stuck in the 'on' position.
6
Inspect the fuses related to the interior lights for any blown fuses.

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
•Flathead screwdriver
•Multimeter

Parts Required

•Replacement door sensors (if found faulty)
•Interior light switch (if found defective)

Related Faults

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Diagnostic Steps

1
Check the vehicle's settings through the touchscreen for any changes to the interior light settings.
2
Inspect each door to ensure they are closing properly and that the door sensors are functioning correctly.
3
Use the Tesla app or onboard diagnostics to check for any alerts or notifications regarding the lighting system.
4
Perform a soft reset of the vehicle’s software by holding down the two scroll wheels on the steering wheel until the screen reboots.
5
Test the interior light switch to ensure it is not stuck in the 'on' position.
6
Inspect the fuses related to the interior lights for any blown fuses.

Solution

1. Preparation

Gather necessary tools: OBD-II scanner (if applicable), flathead screwdriver, and a multimeter.
Ensure the vehicle is parked in a safe location and powered off.

2. Inspect Door Sensors

Remove any paneling around the door sensors if necessary.
Use a multimeter to test the continuity of the door sensors.
- Disconnect the sensor connector and check for continuity with the multimeter.
- If no continuity is found, replace the door sensor.
Reassemble any paneling removed.

3. Reset Lighting Control Module

Locate the main fuse box and identify the fuse for the interior lighting.
Remove the fuse, wait for at least 10 seconds, and reinstall.
Check the vehicle settings again to ensure no overrides are present.

4. Check for Software Updates

Connect the vehicle to Wi-Fi and check for any available software updates via the touchscreen.
Download and install any updates, which may resolve software-related issues with the interior lights.

5. Test Functionality

After performing the above steps, close all doors and test the interior lights.
Ensure that they turn off when the doors are closed and that the switch operates correctly.