FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
my Tesla Model 3 Highland (2024-present) headlights flicker when driving at night, what's wrong? - Tesla Model 3
Home/Cars/Tesla/Model 3/Highland (2024-present)/my Tesla Model 3 Highland (2024-present) headlights flicker when driving at night, what's wrong?

my Tesla Model 3 Highland (2024-present) headlights flicker when driving at night, what's wrong?

Tesla Model 3 Highland (2024-present)

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

Problem Statement

Learn how to diagnose and fix flickering headlights in Tesla Model 3 Highland (2024-present). 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.
  • •Allow the vehicle to cool down before inspecting components that may have been active.

Symptoms

  • •Headlights flicker intermittently
  • •Dim or inconsistent brightness during flickering
  • •Possible accompanying dashboard warning lights
  • •No noticeable effect on other electrical components
  • •Increased glare or distraction to other drivers

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
  • •Socket set
  • •Screwdrivers (flathead and Phillips)
  • •Pliers

Parts Required

  • •Headlight bulbs (if damaged)
  • •Headlight relay (if faulty)
  • •Electrical connector (if corroded)

Additional Information

Affected Component
Electrical
Estimated Time
1-2 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
3 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 all necessary tools and parts.
  • Ensure the vehicle is parked on a flat surface and the engine is off.
  • Disconnect the negative terminal of the battery for safety.
2. Inspect Headlight Bulb Connections
  • Remove the headlight assembly cover by unscrewing any fasteners.
  • Disconnect the electrical connector from the bulb.
  • Inspect the connector and bulb socket for corrosion or damage; clean or replace as necessary.
  • Reconnect the electrical connector securely and replace the headlight assembly cover.
3. Check Battery Voltage
  • Reconnect the negative battery terminal.
  • Use a multimeter to check the battery voltage.
    • If the voltage is low, charge or replace the battery as needed.
  • If the voltage is normal, proceed to the next step.
4. Test Headlight Relay
  • Locate the headlight relay in the fuse box (refer to the owner's manual for exact location).
  • Remove the relay and visually inspect it for damage.
  • Swap it with a relay of the same type from another non-essential circuit to test functionality.
    • If swapping resolves the flickering, replace the faulty relay.
5. Inspect Wiring Harness
  • Conduct a visual inspection of the wiring harness leading to the headlights.
  • Look for any frayed wires, exposed insulation, or signs of wear.
  • Repair or replace any damaged sections of the wiring harness.
6. Verify Software Settings
  • Use the vehicle's touchscreen to access settings related to lighting.
  • Ensure that automatic headlights and other related features are correctly configured.
  • Update the vehicle's software if an update is available.