how to fix the Tesla Model S Original (2012-2020) interior lights not working

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

558 words

Problem Statement

Learn how to diagnose and fix interior lights not working in Tesla Model S (2012-2020). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle’s battery if working on electrical components to prevent short circuits.

Symptoms

•Interior lights do not illuminate when doors are opened
•Interior lights do not turn on when manually activated
•Dome light remains off regardless of settings
•No response from light controls on the touchscreen
•Possible warning messages related to electrical systems on the dashboard

Diagnostic Steps

1
Check the settings on the touchscreen to ensure the interior lights are activated.
2
Inspect the interior light bulbs to see if they are burned out.
3
Test the door switches for proper operation to ensure they are signaling the lights to turn on.
4
Use an OBD-II scanner to check for any error codes related to the cabin lighting system.
5
Verify the fuse related to the interior lights by checking the vehicle's fuse box.

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

•Phillips screwdriver
•Multimeter
•Fuse puller

Parts Required

•Replacement light bulbs
•Replacement door switches (if necessary)
•Replacement fuses (if necessary)

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Diagnostic Steps

1
Check the settings on the touchscreen to ensure the interior lights are activated.
2
Inspect the interior light bulbs to see if they are burned out.
3
Test the door switches for proper operation to ensure they are signaling the lights to turn on.
4
Use an OBD-II scanner to check for any error codes related to the cabin lighting system.
5
Verify the fuse related to the interior lights by checking the vehicle's fuse box.

Solution

1. Preparation

Tools Required: Phillips screwdriver, multimeter, fuse puller
Ensure the vehicle is parked with the ignition off before starting repairs.

2. Check and Replace Light Bulbs

Sub-steps:
1. Remove the light cover by gently prying it off with a flathead screwdriver.
2. Carefully pull the old bulb from its socket.
3. Insert a new bulb of the same type (check the owner's manual for specifications).
4. Reattach the light cover securely.

3. Inspect Door Switches

Sub-steps:
1. Locate the door switches on each door frame.
2. Use a multimeter to test for continuity when the door is opened and closed.
3. If a switch is faulty, replace it by removing the panel surrounding the switch and disconnecting its wiring harness.
4. Install the new switch and reassemble the panel.

4. Check and Replace Fuse

Sub-steps:
1. Locate the fuse box (usually under the dashboard or in the trunk).
2. Identify the fuse associated with the interior lights using the diagram on the fuse box lid.
3. Remove the fuse using a fuse puller to check if it's blown.
4. If blown, replace it with a new fuse of the same amperage.
5. Reassemble the fuse box cover.

5. Final Assembly and Testing

Sub-steps:
1. Make sure all components are securely reassembled.
2. Turn on the vehicle and test the interior lights by opening the doors and using the manual controls.