Volkswagen Golf Seventh Generation (2013-2020) why are my brake lights not working

Volkswagen Golf Eighth Generation (2020-present)

Error Codes

1-2 hours

Time

medium

Difficulty

high

Severity

4 min read

603 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 diagnose and fix brake lights not working on Volkswagen Golf (2013-2020). 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 vehicle battery before working on the electrical system to prevent shocks or shorts.

Symptoms

•Brake lights do not illuminate when the brake pedal is pressed
•Check engine light illuminated (in some cases)
•Bulb failure warning on the dashboard (if equipped)
•Possible malfunction of other electrical components (e.g., tail lights)
•Increased brake pedal travel before engaging brakes

Diagnostic Steps

1
Inspect the brake light bulbs for any signs of failure or damage.
2
Check the brake light fuse in the fuse box and replace if blown.
3
Test the brake light switch located near the brake pedal for proper operation.
4
Use a multimeter to check for voltage at the brake light socket when the pedal is pressed.
5
Inspect the wiring for any visible damage, corrosion, or loose connections.
6
Verify the operation of the tail light circuit, as it may affect the brake lights.

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

•Screwdriver set
•Multimeter
•Replacement brake light bulbs
•Fuse puller

Parts Required

•Brake light bulbs (if damaged)
•Brake light fuse (if blown)

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Diagnostic Steps

1
Inspect the brake light bulbs for any signs of failure or damage.
2
Check the brake light fuse in the fuse box and replace if blown.
3
Test the brake light switch located near the brake pedal for proper operation.
4
Use a multimeter to check for voltage at the brake light socket when the pedal is pressed.
5
Inspect the wiring for any visible damage, corrosion, or loose connections.
6
Verify the operation of the tail light circuit, as it may affect the brake lights.

Solution

1. Preparation

Gather tools and materials.
Tools Required: Screwdriver set, multimeter, replacement brake light bulbs, fuse puller (if needed).
Parts Required: Brake light bulbs (if damaged), brake light fuse (if blown).
Ensure the vehicle is parked on a flat surface and the ignition is turned off.

2. Inspect and Replace Brake Light Bulbs

Remove the tail light assembly by unscrewing the retaining screws.
Gently pull the tail light assembly out from the vehicle.
Twist and remove the bulb socket from the assembly.
Check the bulb for a broken filament or darkened glass; replace if necessary.
Reinsert the bulb socket into the tail light assembly.
Reattach the tail light assembly to the vehicle, securing it with screws.

3. Check and Replace Brake Light Fuse

Locate the fuse box in the vehicle (usually under the dashboard or in the engine compartment).
Identify the brake light fuse using the diagram on the fuse box cover.
Use a fuse puller to remove the fuse and inspect it for continuity.
Replace with a new fuse of the same amperage if the old one is blown.

4. Test the Brake Light Switch

Locate the brake light switch near the brake pedal.
Disconnect the wiring harness from the switch.
Use a multimeter to test for continuity when the brake pedal is pressed.
If there’s no continuity, replace the brake light switch.

5. Inspect Wiring and Connections

Visually inspect the wiring harness connected to the brake lights for any damage.
Check for loose or corroded connectors, and repair or replace as necessary.
Ensure all connections are secure and free of corrosion.