FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
how to fix the headlights on my Tesla Model 3 Original (2017-2023) that flicker? - Tesla Model 3
Home/Cars/Tesla/Model 3/Highland (2024-present)/how to fix the headlights on my Tesla Model 3 Original (2017-2023) that flicker?

how to fix the headlights on my Tesla Model 3 Original (2017-2023) that flicker?

Tesla Model 3 Highland (2024-present)

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

Problem Statement

Learn how to diagnose and fix flickering headlights on your Tesla Model 3 (2017-2023). Step-by-step guide with tools and safety tips included.

Affected Component
Electrical
Estimated Time
1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before performing any electrical work to prevent shock or short circuits.
  • •Allow the vehicle to cool down before handling any components.

Symptoms

  • •Headlights flickering intermittently
  • •Possible dimming or brightening of headlights
  • •Dashboard warning light for headlights illuminated
  • •Reduced visibility at night
  • •Potential issues with high beam or low beam operation

Diagnostic Steps

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

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

  • •Socket set
  • •Multimeter
  • •OBD-II scanner
  • •Electrical contact cleaner
  • •Gloves

Parts Required

  • •Headlight bulbs (if defective)
  • •Electrical connectors (if damaged)

Additional Information

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

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather necessary tools and parts.
  • Ensure the vehicle is parked on a flat surface and turned off.
  • Disconnect the vehicle's 12V battery to avoid electrical shock.
2. Inspect and Secure Connections
  • Tools Required: Socket set, multimeter.
  • Remove the headlight assembly following the manufacturer’s instructions.
  • Inspect the wiring harness and connectors for corrosion or loose connections.
  • Clean any corrosion with electrical contact cleaner and secure connections.
3. Replace Headlight Bulbs (if necessary)
  • Tools Required: Socket set, gloves.
  • If bulbs are faulty, remove the old bulbs from the headlight assembly.
  • Insert new bulbs (ensure they are the correct type for the Tesla Model 3).
  • Avoid touching the glass part of the new bulbs with bare hands to prevent oil contamination.
4. Check Battery Voltage
  • Tools Required: Multimeter.
  • Reconnect the 12V battery and turn on the vehicle.
  • Measure the battery voltage; it should be around 12.6 volts when fully charged.
  • If voltage is low, consider charging or replacing the battery.
5. Reassemble Headlight Assembly
  • Carefully reinsert the headlight assembly into the vehicle.
  • Secure it following the manufacturer's instructions.
  • Reconnect any electrical connectors that were previously disconnected.