how to fix Tesla Model Y Current (2020-present) fog lights not working

Tesla Model Y Current (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

536 words

Problem Statement

Learn how to diagnose and fix fog lights not working on Tesla Model Y (2020-present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to avoid shock.

Symptoms

•Fog lights do not illuminate when activated
•Dashboard warning or indicator light may be present
•No unusual sounds or signs when the fog light switch is engaged
•Other exterior lights (headlights, turn signals) function normally
•Possible error messages displayed on the vehicle's screen

Diagnostic Steps

1
Inspect fog light bulbs for damage or burnout.
2
Check the fog light fuse in the fuse box for continuity.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the fog light switch for proper function.
5
Inspect wiring and connections for corrosion or damage.
6
Check the fog light relay operation.

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

•Flathead screwdriver
•Fuse puller or needle-nose pliers
•Multimeter
•OBD-II scanner

Parts Required

•Replacement fog light bulbs
•Replacement fuse (if necessary)
•Replacement relay (if necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect fog light bulbs for damage or burnout.
2
Check the fog light fuse in the fuse box for continuity.
3
Use an OBD-II scanner to check for any related error codes.
4
Test the fog light switch for proper function.
5
Inspect wiring and connections for corrosion or damage.
6
Check the fog light relay operation.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and turned off.
Disconnect the 12V battery to avoid electrical shock.

2. Inspect and Replace Fog Light Bulbs

Tools Required: Flathead screwdriver, replacement fog light bulbs.
Open the front hood.
Locate the fog light assembly under the front bumper.
Remove any screws or clips securing the fog light cover.
Carefully pull the fog light assembly out of its housing.
Disconnect the wiring harness from the fog light.
Replace the bulb with a new one (check for compatibility).
Reconnect the wiring harness and secure the fog light assembly.

3. Check and Replace Fog Light Fuse

Tools Required: Fuse puller or needle-nose pliers, replacement fuse.
Locate the fuse box (consult the owner's manual for the location).
Identify the fog light fuse using the diagram on the fuse box cover.
Pull the fuse out and inspect it for continuity (a blown fuse will have a broken filament).
Replace with a new fuse of the same amperage if blown.

4. Test the Fog Light Relay

Tools Required: Multimeter.
Access the relay box (consult the owner’s manual for location).
Identify the fog light relay and check for proper operation using a multimeter.
Replace the relay if it does not function correctly.