how to fix Volkswagen Golf MK7 (2015-2019) rear brakes not working

Volkswagen Golf MK8.5 (2024-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

critical

Severity

3 min read

562 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 rear brakes not working on Volkswagen Golf MK7 (2015-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electronic brake systems.
•Allow the brake components to cool before handling to avoid burns.

Symptoms

•Rear brake warning light illuminated on the dashboard
•Reduced braking performance at the rear wheels
•Grinding noise when braking
•Uneven brake wear on rear pads
•Brake pedal feels soft or spongy
•Brake fluid leak visible near rear wheels

Diagnostic Steps

1
Inspect the brake fluid level and check for any leaks in the brake lines or at the calipers.
2
Scan the vehicle's onboard diagnostics for any error codes related to the brake system using an OBD-II scanner.
3
Visually inspect the rear brake pads and rotors for wear and damage.
4
Check the operation of the electronic parking brake (if equipped) for any faults.
5
Test the brake pedal feel and response for sponginess or abnormal movement.
6
Verify the brake caliper function by attempting to compress the caliper piston.

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
•Socket set
•C-clamp
•Brake bleeder kit
•Torque wrench
•Jack and jack stands

Parts Required

•Rear brake pads
•Rear brake rotors (if necessary)
•Brake fluid (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Inspect the brake fluid level and check for any leaks in the brake lines or at the calipers.
2
Scan the vehicle's onboard diagnostics for any error codes related to the brake system using an OBD-II scanner.
3
Visually inspect the rear brake pads and rotors for wear and damage.
4
Check the operation of the electronic parking brake (if equipped) for any faults.
5
Test the brake pedal feel and response for sponginess or abnormal movement.
6
Verify the brake caliper function by attempting to compress the caliper piston.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface and securely lift the rear of the vehicle using a jack and jack stands.
Remove the rear wheels to access the brake components.

2. Inspect and Replace Brake Pads

Sub-steps:
1. Remove the caliper bolts using a socket set and detach the caliper from the rotor.
2. Carefully hang the caliper using a bungee cord to avoid stress on the brake line.
3. Remove the old brake pads from the caliper bracket and inspect for wear.
4. If pads are worn, install new brake pads in the caliper bracket, ensuring they are seated properly.
5. Use a C-clamp to compress the caliper piston back into the caliper housing to accommodate the new pads.

3. Replace Brake Rotors (if necessary)

Sub-steps:
1. If the rotors are scored or excessively worn, remove the caliper bracket by unscrewing the bracket bolts.
2. Slide the rotor off the hub and replace it with a new rotor, ensuring it is clean and free of debris.
3. Reinstall the caliper bracket and torque the bolts to the manufacturer's specifications.

4. Bleed the Brake System

Sub-steps:
1. Use a brake bleeder kit to remove any air from the brake lines.
2. Start with the rear brake farthest from the master cylinder, typically the passenger side rear, and open the bleeder screw while someone presses the brake pedal.
3. Continue bleeding until a steady stream of brake fluid with no air bubbles is observed.
4. Repeat for the driver’s side rear and then check the front brakes as needed.

5. Reassemble and Test

Sub-steps:
1. Reinstall the caliper and secure it with the caliper bolts, ensuring proper torque.
2. Replace the rear wheels and lower the vehicle.
3. Test the brake pedal for firmness and proper operation before driving.

Tools Required:

OBD-II scanner
Socket set
C-clamp
Brake bleeder kit
Torque wrench
Jack and jack stands

Parts Required:

Rear brake pads
Rear brake rotors (if necessary)
Brake fluid (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

Always disconnect the battery before working on electronic brake systems.
Allow the brake components to cool before handling to avoid burns.