my Tesla Model S Plaid interior lights won't turn off, what to check

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

458 words

Problem Statement

Learn how to diagnose and fix the issue of interior lights not turning off in Tesla Model S Plaid. 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 12V battery before working on electrical components to prevent shock or short circuits.

Symptoms

•Interior lights remain on continuously
•Door lights do not turn off when doors are closed
•Dome light remains illuminated regardless of switch position
•Battery drain observed due to lights staying on
•No alerts or notifications displayed on the vehicle's dashboard

Diagnostic Steps

1
Check the interior light switch settings to ensure they are in the 'off' position.
2
Inspect the door switches for proper operation; manually press them to see if lights turn off.
3
Use the Tesla touchscreen to check for software updates or settings related to lighting.
4
Perform a soft reboot of the vehicle's system by holding down the scroll wheels on the steering wheel.
5
Use an OBD-II scanner to check if any fault codes are present related to the lighting system.

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

•Multimeter
•Trim removal tool
•OBD-II scanner

Parts Required

•Replacement door switch (if faulty)
•Any necessary electrical connectors or wiring

Related Faults

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Diagnostic Steps

1
Check the interior light switch settings to ensure they are in the 'off' position.
2
Inspect the door switches for proper operation; manually press them to see if lights turn off.
3
Use the Tesla touchscreen to check for software updates or settings related to lighting.
4
Perform a soft reboot of the vehicle's system by holding down the scroll wheels on the steering wheel.
5
Use an OBD-II scanner to check if any fault codes are present related to the lighting system.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is in 'Park' and turn off the ignition.
Disconnect the 12V battery for safety.

2. Check Door Switches

Locate the door switches; they are typically mounted in the door frame.
Use a multimeter to test continuity on each switch when pressed.
If a switch is faulty, replace it with a new one.

3. Inspect Interior Lighting Controls

Remove the overhead console using a trim tool to access the wiring.
Check for loose connections or damaged wires in the harness.
If damaged, repair or replace the wiring as necessary.

4. Update Software

Reconnect the 12V battery.
Power on the vehicle and navigate to the software update section on the touchscreen.
Ensure the vehicle's software is up to date; if not, perform the update.

5. Reassemble Components

Reattach any panels or covers removed during inspection.
Ensure all screws and clips are secured.