why does my Volkswagen Golf MK7.5 (2020-Present) make a grinding noise when turning

Volkswagen Golf MK7.5 (2020-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

592 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 to diagnose and fix grinding noise when turning in Volkswagen Golf MK7.5. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Steering

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on electrical systems.
•Allow the vehicle to cool down before handling any hot components.

Symptoms

•Grinding noise when the steering wheel is turned
•Increased steering effort or stiffness
•Vibration felt through the steering wheel
•Uneven tire wear
•Check engine light illuminated

Diagnostic Steps

1
Inspect the power steering fluid level and condition.
2
Check for any visible damage or wear to the CV joints and boots.
3
Inspect the wheel bearings for play or roughness.
4
Examine the suspension components for wear or damage, including control arms and bushings.
5
Scan for any error codes using an OBD-II scanner to check for electronic issues related to the steering system.

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
•Torque wrench
•Jack and jack stands
•Turkey baster

Parts Required

•Power steering fluid
•CV axle (if damaged)
•Wheel bearing (if worn)
•Suspension components (if damaged)

Related Faults

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Diagnostic Steps

1
Inspect the power steering fluid level and condition.
2
Check for any visible damage or wear to the CV joints and boots.
3
Inspect the wheel bearings for play or roughness.
4
Examine the suspension components for wear or damage, including control arms and bushings.
5
Scan for any error codes using an OBD-II scanner to check for electronic issues related to the steering system.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Power Steering Fluid

Locate the power steering reservoir under the hood.
Check the fluid level; if low, top off with the correct fluid type (consult the owner’s manual).
If the fluid is dirty, drain and replace it entirely:
- Disconnect the return line from the reservoir.
- Use a turkey baster to remove old fluid.
- Reconnect the return line and refill the reservoir with new fluid.

3. Inspect CV Joints and Boots

Raise the front of the vehicle with a jack and secure it on jack stands.
Remove the front wheels.
Inspect the CV joints and boots for cracks or tears.
If damaged, replace the CV axle by:
- Removing the axle nut with a socket and breaker bar.
- Detaching the lower control arm to free the axle from the hub.
- Pulling the old axle out and installing the new one in reverse order.
- Torque the axle nut to the manufacturer’s specification (consult the service manual).

4. Check and Replace Wheel Bearings

With the wheel still removed, grasp the wheel hub and wiggle it to check for play.
If play is detected, remove the hub by:
- Removing the brake caliper and rotor.
- Detaching any retaining clips or bolts securing the hub.
- Pulling the hub assembly out.
Replace with a new wheel bearing, ensuring it’s pressed in correctly and securely.

5. Inspect Suspension Components

Check the control arms, bushings, and strut mounts for any visible wear or damage.
Replace any worn components with new OEM parts.
Reassemble everything, ensuring all bolts are torqued to specifications.