how to fix Tesla Model S Plaid/Refresh (2021-present) rear lights not working

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

critical

Severity

3 min read

506 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix rear lights not working on 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 battery before working on any electrical systems to prevent shock.

Symptoms

•Rear tail lights are completely non-functional
•Brake lights do not illuminate when pressed
•Turn signals do not activate
•Warning message displayed on the dashboard
•Possible flickering of other exterior lights

Diagnostic Steps

1
Inspect the rear light assemblies for physical damage or corrosion.
2
Check the vehicle settings to ensure rear lights are not disabled in the software.
3
Use an OBD-II scanner to check for any error codes related to the lighting system.
4
Test the rear light bulbs to confirm they are not burned out.
5
Inspect the wiring harness and connectors for signs of damage or loose connections.

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
•Wire stripper
•Crimp connectors
•Electrical tape
•Flathead screwdriver

Parts Required

•Replacement bulbs (if needed)
•Wire (if repairs are necessary)

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Diagnostic Steps

1
Inspect the rear light assemblies for physical damage or corrosion.
2
Check the vehicle settings to ensure rear lights are not disabled in the software.
3
Use an OBD-II scanner to check for any error codes related to the lighting system.
4
Test the rear light bulbs to confirm they are not burned out.
5
Inspect the wiring harness and connectors for signs of damage or loose connections.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the vehicle battery to prevent electrical shock.
Ensure the vehicle is parked on a level surface and secured with wheel chocks.

2. Inspect and Replace Bulbs

Tools Required: Flathead screwdriver, replacement bulbs if needed.
Open the rear trunk and access the rear light assembly by removing the cover.
Remove the bulbs from the socket by twisting them counterclockwise.
Inspect the bulbs; replace any that are burned out with new, compatible bulbs.
Reinstall the bulbs by twisting them clockwise until secure.

3. Check and Repair Wiring

Tools Required: Wire stripper, crimp connectors, electrical tape.
Visually inspect the wiring harness for any frayed wires or loose connections.
If any wires are damaged, use a wire stripper to remove the damaged section and splice in new wire using crimp connectors.
Secure any loose connections and cover exposed areas with electrical tape.

4. Reset Vehicle Settings

Tools Required: Tesla mobile app or vehicle touchscreen interface.
Reconnect the vehicle battery.
Access the vehicle settings through the touchscreen.
Navigate to the "Lights" section and ensure that all rear light settings are properly configured and enabled.
Perform a system reset if necessary by holding down the steering wheel buttons until the screen refreshes.