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my Tesla Model S Original (2012-2020) headlights won't turn off what to do - Tesla Model S
Home/Cars/Tesla/Model S/Plaid/Refresh (2021-present)/my Tesla Model S Original (2012-2020) headlights won't turn off what to do

my Tesla Model S Original (2012-2020) headlights won't turn off what to do

Tesla Model S Plaid/Refresh (2021-present)

Error Codes
1-2 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
473 words

Problem Statement

Learn how to diagnose and fix headlights that won't turn off in Tesla Model S (2012-2020). 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 electrical systems to avoid short circuits.
  • •Allow the vehicle to cool before inspecting components to prevent burns.

Symptoms

  • •Headlights remain on continuously
  • •Dashboard warning lights may be illuminated
  • •Headlight switch may feel unresponsive
  • •Increased battery drain observed
  • •Potential overheating of the headlight assembly

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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

  • •Multimeter
  • •Trim removal tool
  • •Screwdriver set
  • •Tesla-specific diagnostic tool (optional)

Parts Required

  • •Replacement headlight switch (if necessary)
  • •Headlight relay (if necessary)

Additional Information

Affected Component
Electrical
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
2 items

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Solution
1. Preparation
  • Gather necessary tools and safety equipment.
  • Ensure the vehicle is parked in a safe area.
  • Disconnect the vehicle from the charging station if connected.
2. Headlight Switch Inspection
  • Sub-steps:
    1. Remove the headlight switch from its housing using a trim removal tool.
    2. Inspect for visible damage or corrosion.
    3. Test the switch with a multimeter for continuity in different positions.
    4. Replace the switch if it shows signs of malfunction.
3. Relay and Wiring Inspection
  • Sub-steps:
    1. Locate the headlight relay in the fuse box (refer to the owner's manual for specific location).
    2. Remove the relay and inspect for any signs of damage or burning.
    3. Use a multimeter to test the relay for proper function.
    4. Check the wiring harness for any signs of wear, fraying, or shorts.
    5. Repair or replace any damaged components.
4. Software Update
  • Sub-steps:
    1. Connect the vehicle to Wi-Fi.
    2. Go to the software update section in the touchscreen interface.
    3. Check for available updates and follow the prompts to install any software updates.
    4. Restart the vehicle after the update is complete.