how to fix a differential noise in my Volkswagen Golf MK7.5 (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
• Disconnect the battery for safety.

2. Drain Differential Fluid

• Remove the drain plug using a socket wrench.
• Allow the fluid to completely drain into a suitable container.
• Inspect the fluid for metal shavings or debris.

3. Inspect and Replace Bearings

• Remove the differential cover by loosening the bolts with a socket wrench.
• Visually inspect the bearings for signs of wear or pitting.
• If damaged, remove the old bearings using a bearing puller and replace them with new ones.

4. Replace Differential Fluid

• Clean the differential housing and the cover surfaces to ensure a proper seal.
• Install a new gasket or apply sealant as per manufacturer specifications.
• Reinstall the differential cover and torque the bolts to the manufacturer's specifications (typically around 25 Nm).
• Fill the differential with manufacturer-recommended fluid using a pump until it reaches the fill hole.

5. Reassemble and Test

• Reinstall the drain plug and torque to specifications.
• Reconnect the battery.
• Lower the vehicle and perform a test drive to evaluate noise levels.