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

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

535 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 12V battery before working on electrical systems to prevent shocks or short circuits.

Symptoms

•Interior lights do not turn off when the vehicle is in motion or parked
•Dome lights may flicker intermittently
•Door Ajar warning may be displayed on the dashboard
•Battery drain due to constant lighting
•Interior lights remain on after exiting the vehicle

Diagnostic Steps

1
Check the vehicle settings for interior light timeout settings in the infotainment system.
2
Inspect all doors, including the trunk and frunk, to ensure they are closing properly.
3
Utilize the Tesla diagnostics tool to scan for any error codes related to the interior lighting system.
4
Examine the door sensors and switches for any signs of malfunction or debris.
5
Conduct a visual inspection of the interior light bulbs and their wiring for any damage.
6
Perform a soft reset of the vehicle by holding down the two scroll wheels on the steering wheel.

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

•Screwdriver set
•Trim removal tools
•Multimeter

Parts Required

•Door sensor (if faulty)
•Interior light bulbs (if damaged)

Related Faults

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Diagnostic Steps

1
Check the vehicle settings for interior light timeout settings in the infotainment system.
2
Inspect all doors, including the trunk and frunk, to ensure they are closing properly.
3
Utilize the Tesla diagnostics tool to scan for any error codes related to the interior lighting system.
4
Examine the door sensors and switches for any signs of malfunction or debris.
5
Conduct a visual inspection of the interior light bulbs and their wiring for any damage.
6
Perform a soft reset of the vehicle by holding down the two scroll wheels on the steering wheel.

Solution

1. Preparation

Ensure the vehicle is parked safely and on a flat surface.
Disconnect the 12V battery for safety to prevent any electrical shorts during repairs.

2. Inspect and Reset Door Sensors

Reconnect the 12V battery.
Open and close each door, including the trunk and frunk, to ensure the sensors are functioning correctly.
If a door sensor is faulty, replace it as follows:
1. Remove the door panel (specific instructions may vary by door type).
2. Disconnect the door sensor wiring harness.
3. Remove the old sensor and install the new sensor.
4. Reconnect the wiring harness and reassemble the door panel.

3. Check Interior Light Controls

Access the vehicle's settings menu on the touchscreen:
1. Navigate to "Controls" > "Lights" > "Interior Lights".
2. Ensure the auto-off feature is enabled.
3. If settings are incorrect, adjust them accordingly.

4. Replace Faulty Bulbs

If the bulbs are damaged:
1. Remove the lens cover for the interior lights.
2. Remove the old bulb and insert a new bulb of the same type.
3. Replace the lens cover securely.

5. Final Check

After making adjustments or replacements, reconnect the battery if it was disconnected.
Perform a test drive to ensure the interior lights function correctly when doors are closed and turn off as expected.