how to fix the rear lights not working on my Volkswagen Golf Seventh Generation (2013-2020)?

Volkswagen Golf Eighth Generation (2020-present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

4 min read

618 words

Problem Statement

Learn how to diagnose and fix rear lights not working on your Volkswagen Golf (2013-2020). 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 or shorts.
•Allow the vehicle to cool down if inspections are conducted on the engine compartment or wiring.

Symptoms

•Rear lights do not illuminate when headlights are on
•Brake lights not activating when brake pedal is pressed
•Turn signals may not work or flash rapidly
•Dashboard warning light for rear lights illuminated
•No audible click from the turn signal relay when engaging turn signals

Diagnostic Steps

1
Inspect the rear light bulbs for any signs of burning out or damage.
2
Check the fuse related to the rear lights using the vehicle’s fuse box diagram.
3
Use an OBD-II scanner to check for any stored fault codes related to the lighting system.
4
Verify the condition of the wiring harness leading to the rear lights for any signs of damage or corrosion.
5
Test the rear light sockets for proper voltage using a multimeter.
6
Inspect the switch for the rear lights and brake lights 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

•Flathead screwdriver
•OBD-II scanner
•Multimeter
•Fuse puller or needle-nose pliers
•Wire strippers
•Soldering iron or crimp connectors
•Socket set
•Screwdriver set

Parts Required

•Rear light bulbs (specific to the model)
•Fuses (specific amperage based on vehicle manual)

Related Faults

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Diagnostic Steps

1
Inspect the rear light bulbs for any signs of burning out or damage.
2
Check the fuse related to the rear lights using the vehicle’s fuse box diagram.
3
Use an OBD-II scanner to check for any stored fault codes related to the lighting system.
4
Verify the condition of the wiring harness leading to the rear lights for any signs of damage or corrosion.
5
Test the rear light sockets for proper voltage using a multimeter.
6
Inspect the switch for the rear lights and brake lights to ensure it is functioning properly.

Solution

1. Preparation

Gather necessary tools and safety equipment.
Disconnect the negative battery terminal to prevent electrical shock.
Ensure the vehicle is parked on a level surface and the ignition is off.

2. Replace Bulbs

Tools Required: Flathead screwdriver, new rear light bulbs (check specifications).
Remove the access panel or screws securing the rear light assembly.
Carefully pull out the light assembly from the vehicle.
Twist and remove the old bulbs from the socket.
Insert new bulbs into the sockets, ensuring they are secure.
Reinstall the rear light assembly and secure with screws or clips.

3. Check and Replace Fuses

Tools Required: Fuse puller or needle-nose pliers.
Locate the fuse box (usually under the dashboard or in the engine compartment).
Identify the fuse for the rear lights using the vehicle's manual.
Pull the fuse out and visually inspect it for continuity.
If the fuse is blown, replace it with a new fuse of the same amperage.

4. Repair Wiring and Connectors

Tools Required: Wire strippers, soldering iron (or crimp connectors), electrical tape.
Inspect the wiring harness for damage; repair any frayed wires by stripping the insulation and soldering or crimping new connectors.
Ensure that all connectors are clean and free of corrosion; use electrical cleaner if necessary.

5. Test Light Switch

Tools Required: Multimeter.
Access the light switch (typically located on the steering column).
Use a multimeter to test for continuity in the switch when engaged.
If the switch fails to show continuity, replace with a new switch.