my Volkswagen Golf MK6 (2009-2014) rear lights are not working, what should I do?

Volkswagen Golf MK7 (2015-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

4 min read

635 words

Problem Statement

Learn how to diagnose and fix non-functional rear lights on Volkswagen Golf MK6 (2009-2014). 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 to prevent short circuits.
•Ensure the vehicle is in 'Park' or 'Neutral' with the parking brake applied when testing lights.

Symptoms

•Rear lights do not illuminate when headlights are on
•Brake lights are non-functional
•Turn signals in the rear are not operating
•Dashboard warning light for rear lights may be illuminated
•No sound from the turn signal relay when engaging turn signals
•Possible blown fuses related to rear lighting

Diagnostic Steps

1
Inspect the rear light bulbs for any signs of being blown or damaged.
2
Check the fuse box for any blown fuses that control the rear lighting circuit.
3
Use an OBD-II scanner to check for any relevant error codes that may indicate electrical faults.
4
Test the voltage at the rear light socket with a multimeter to determine if power is reaching the lights.
5
Inspect the wiring harness and connectors for any signs of corrosion, damage, or loose connections.
6
Verify the operation of the light switch on the dashboard to ensure it is functioning properly.

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
•Fuse puller or pliers
•OBD-II scanner
•Multimeter
•Wire strippers
•Electrical connectors
•Electrical tape

Parts Required

•Replacement bulbs (specific to vehicle)
•Replacement fuses (appropriate amperage)

Related Faults

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Symptoms

•Rear lights do not illuminate when headlights are on

•Brake lights are non-functional

•Turn signals in the rear are not operating

•Dashboard warning light for rear lights may be illuminated

•No sound from the turn signal relay when engaging turn signals

•Possible blown fuses related to rear lighting

Diagnostic Steps

1
Inspect the rear light bulbs for any signs of being blown or damaged.
2
Check the fuse box for any blown fuses that control the rear lighting circuit.
3
Use an OBD-II scanner to check for any relevant error codes that may indicate electrical faults.
4
Test the voltage at the rear light socket with a multimeter to determine if power is reaching the lights.
5
Inspect the wiring harness and connectors for any signs of corrosion, damage, or loose connections.
6
Verify the operation of the light switch on the dashboard to ensure it is functioning properly.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and the engine is turned off.
Disconnect the negative terminal of the battery to ensure safety while working on the electrical system.

2. Inspect and Replace Bulbs

Sub-steps:
- Open the rear hatch and access the tail light assembly.
- Remove any screws or clips securing the tail light assembly.
- Pull the tail light assembly outward to access the bulbs.
- Remove the bulb holders and inspect the bulbs; replace any that are blown with new ones of the same type.
Tools Required: Screwdriver set

3. Check and Replace Fuses

Sub-steps:
- Locate the fuse box, usually found in the cabin or under the hood.
- Identify the fuse related to the rear lights using the diagram on the fuse box cover.
- Remove the fuse using a fuse puller or pliers; inspect it for continuity.
- Replace with a new fuse of the same amperage if blown.
Tools Required: Fuse puller or pliers

4. Repair Wiring Issues

Sub-steps:
- If voltage was not detected at the rear light socket, inspect the wiring harness for breaks or fraying.
- Use electrical tape to repair minor damage, or replace the damaged section of wire using appropriate connectors.
- Ensure all connectors are clean, tight, and free of corrosion.
Tools Required: Wire strippers, electrical connectors, electrical tape

5. Reassemble Components

Sub-steps:
- Reinstall the tail light assembly and secure it with screws or clips.
- Reconnect the negative terminal of the battery.
Tools Required: Screwdriver set