my Skoda Octavia NFL (2020-Present) has a loud noise coming from the differential, what’s happening?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety.

2. Drain the Differential Fluid

• Tools Required: Socket set, drain pan
• Remove the differential drain plug using the socket set.
• Allow the fluid to completely drain into the drain pan.
• Inspect the old fluid for metal shavings or debris.

3. Inspect Differential Components

• Tools Required: Visual inspection tools
• Remove the differential cover if necessary.
• Inspect the gears, bearings, and seals for wear or damage.
• Check for any signs of pitting or scoring on gear surfaces.

4. Replace Worn Components

• Tools Required: Socket set, torque wrench
• Replace any damaged bearings or gears.
• Install new seals if worn or leaking.
• Reassemble the differential, ensuring all components are properly aligned.

5. Refill the Differential

• Tools Required: Funnel, new differential fluid (check manufacturer specifications)
• Fill the differential with the correct type and amount of fluid as per the manufacturer's recommendations.
• Reinstall the drain plug and tighten to the specified torque.

6. Final Checks

• Reconnect the battery.
• Start the vehicle and check for leaks around the differential.
• Test drive the vehicle to ensure the noise has been resolved.