why does my Tesla Model S Plaid/Refresh (2021-present) interior light stay on

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

524 words

Problem Statement

Learn how to diagnose and fix the issue of interior lights staying on 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 vehicle from any power source before working on electrical components.

Symptoms

•Interior lights stay on continuously
•Doors appear to be closed but may not register as such
•Door Ajar warning displayed on the dashboard
•Increased battery drain due to lights remaining on
•Possible malfunction of the dome light switch

Diagnostic Steps

1
Check the interior light settings through the vehicle's touchscreen to ensure they are configured correctly.
2
Inspect each door for proper closure and listen for the click sound when closing.
3
Use the Tesla app to check for any alerts related to the door sensors.
4
Perform a visual inspection of the door jamb switches for any visible damage or misalignment.
5
Test the dome light switch for functionality by toggling it through its various positions.
6
Utilize the vehicle's diagnostic mode to check for any fault codes related to the interior 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

•Flat-head screwdriver
•Multimeter
•Cleaning cloth

Parts Required

•Door jamb switch

Related Faults

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Diagnostic Steps

1
Check the interior light settings through the vehicle's touchscreen to ensure they are configured correctly.
2
Inspect each door for proper closure and listen for the click sound when closing.
3
Use the Tesla app to check for any alerts related to the door sensors.
4
Perform a visual inspection of the door jamb switches for any visible damage or misalignment.
5
Test the dome light switch for functionality by toggling it through its various positions.
6
Utilize the vehicle's diagnostic mode to check for any fault codes related to the interior lighting system.

Solution

1. Preparation

Ensure the vehicle is parked safely and the key fob is out of range.
Gather necessary tools: flat-head screwdriver, multimeter, and cleaning cloth.

2. Inspect Door Jamb Switches

Remove Door Panel:
- Use a flat-head screwdriver to gently pry off any clips securing the door panel.
- Unclip the door panel and carefully lift it off.
Check the Switch:
- Locate the door jamb switch, usually positioned near the hinge.
- Use a multimeter to test for continuity when the switch is pressed and released.
Clean the Switch:
- If the switch is dirty, clean it with a cloth and a suitable electrical contact cleaner.

3. Adjust or Replace Door Jamb Switch

Adjust:
- If the switch is misaligned, gently bend it back into the correct position to ensure proper contact when the door is closed.
Replace:
- If the switch is faulty, disconnect the wiring harness, remove the old switch, and install a new one.
- Reconnect the wiring harness and ensure the new switch operates properly.

4. Reset Interior Light Settings

On the Tesla touchscreen, go to 'Controls' > 'Lights' and ensure the interior light settings are appropriately configured (e.g., setting to 'Auto').
Perform a soft reset of the vehicle by holding down the scroll wheels on the steering wheel until the touchscreen reboots.