my Tesla Model 3 Original (2017-2023) interior lights won't turn off

Tesla Model 3 Highland (2024-present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

449 words

Problem Statement

Learn how to diagnose and fix interior lights that won't turn off in Tesla Model 3 (2017-2023). 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 charging source before working on electrical systems.
•Ensure the vehicle is in 'Park' and the parking brake is engaged while performing repairs.

Symptoms

•Interior lights stay on continuously
•Battery drain due to lights remaining on
•Possible warning messages related to electrical systems
•Door ajar indicator may remain illuminated
•Increased cabin temperature due to prolonged light exposure

Diagnostic Steps

1
Check the vehicle's settings for interior light controls via the touchscreen interface.
2
Inspect door switches for any physical obstructions or malfunctions that may keep them engaged.
3
Use the OBD-II scanner to check for any error codes related to the vehicle's lighting or electrical systems.
4
Confirm if the vehicle is in 'Camp Mode' or any similar feature that keeps lights on.
5
Perform a soft reset of the vehicle's system by holding down the brake pedal and both scroll wheels on the steering wheel until the screen reboots.

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
•Soft cloth

Parts Required

•Replacement door switches (if faulty)
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Check the vehicle's settings for interior light controls via the touchscreen interface.
2
Inspect door switches for any physical obstructions or malfunctions that may keep them engaged.
3
Use the OBD-II scanner to check for any error codes related to the vehicle's lighting or electrical systems.
4
Confirm if the vehicle is in 'Camp Mode' or any similar feature that keeps lights on.
5
Perform a soft reset of the vehicle's system by holding down the brake pedal and both scroll wheels on the steering wheel until the screen reboots.

Solution

1. Preparation

Gather necessary tools: OBD-II scanner (if applicable), multimeter, and a soft cloth.
Ensure the vehicle is in a safe location with the engine off.

2. Inspect Door Switches

Locate the door switches on each door frame.
Remove any debris or obstructions that may prevent the switch from returning to its default position.
Test each switch with a multimeter to ensure proper functionality (should show continuity when pressed).

3. Reset Interior Light Settings

Access the touchscreen interface.
Navigate to "Controls" > "Lights" > "Interior Lights".
Adjust the settings to ensure they are set to "Auto" or "Off" if needed.

4. Perform System Reset

With the vehicle in "Park", hold the brake pedal and both scroll wheels on the steering wheel.
Wait for the screen to reboot completely.
Check if the interior lights remain off after the reset.