how to troubleshoot my Tesla Model S Original (2012-2020) with no headlights

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

606 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 troubleshoot and fix no headlights issue in Tesla Model S (2012-2020). Step-by-step guide with diagnostic steps 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 components to prevent short circuits.
•Allow the headlights to cool before handling to avoid burns.

Symptoms

•No illumination from headlights (low and high beams)
•Dashboard warning light for headlights may be illuminated
•Possible flickering of other exterior lights (e.g., turn signals, parking lights)
•Inability to activate headlights manually or automatically
•Possible issues with daytime running lights (if equipped)

Diagnostic Steps

1
Check the headlight switch position to ensure it is set to the 'On' position.
2
Inspect the vehicle's fuses related to the lighting system using the owner's manual for fuse locations.
3
Scan for error codes using a compatible OBD-II scanner to identify any faults in the headlight system.
4
Verify the battery voltage to ensure it is sufficient (above 12.4 volts) for the electrical system to function properly.
5
Inspect the headlight bulbs visually to check for any burnouts or damage.
6
Test the headlight connectors for corrosion 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
•Fuse puller (optional)
•Flathead screwdriver
•Electrical contact cleaner
•Headlight bulbs (as needed)

Parts Required

•Headlight bulbs (specific to the vehicle)
•Replacement fuses (if applicable)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Symptoms

•No illumination from headlights (low and high beams)

•Dashboard warning light for headlights may be illuminated

•Possible flickering of other exterior lights (e.g., turn signals, parking lights)

•Inability to activate headlights manually or automatically

•Possible issues with daytime running lights (if equipped)

Diagnostic Steps

1
Check the headlight switch position to ensure it is set to the 'On' position.
2
Inspect the vehicle's fuses related to the lighting system using the owner's manual for fuse locations.
3
Scan for error codes using a compatible OBD-II scanner to identify any faults in the headlight system.
4
Verify the battery voltage to ensure it is sufficient (above 12.4 volts) for the electrical system to function properly.
5
Inspect the headlight bulbs visually to check for any burnouts or damage.
6
Test the headlight connectors for corrosion or loose connections.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a flat surface and the ignition is turned off.
Disconnect the negative battery terminal for safety.

2. Inspect and Replace Fuses

Locate the fuse box: Refer to the owner's manual for the location of the fuse box.
Remove the fuse panel cover: Use your hand or a flathead screwdriver to gently pry it open.
Check the headlight fuse: Locate the fuse corresponding to the headlights; use a fuse puller if available.
Replace if blown: If the fuse is blown, replace it with a new fuse of the same amperage rating (typically 15A or 20A).
Reassemble the fuse panel: Securely place the cover back on and reconnect the negative battery terminal.

3. Inspect and Replace Headlight Bulbs

Access the headlight assembly: Open the front hood and locate the headlight assembly.
Remove the headlight bulb: Twist counterclockwise to remove the bulb socket from the assembly.
Inspect the bulb: Check for any signs of breakage or darkened glass. If damaged, replace with a new bulb (consult the owner's manual for the correct bulb type).
Install the new bulb: Insert the new bulb into the socket and turn clockwise to lock it in place.
Test the headlights: Reconnect the battery and test the headlights to ensure functionality.

4. Check Headlight Connectors

Inspect connectors: With the headlights still off, check the connectors leading to the headlight bulbs for any signs of corrosion or damage.
Clean or replace connectors: If corrosion is present, use electrical contact cleaner to clean the terminals. Replace any damaged connectors.