my Volkswagen Golf MK7.5 (2020-Present) makes a whining noise when driving what's wrong

Solution

1. Preparation

• Tools Required: Socket set, jack and jack stands, OBD-II scanner, fluid inspection tools.
• Ensure the vehicle is parked on a flat surface and the engine is turned off.
• Engage the parking brake for safety.

2. Inspect and Replace Serpentine Belt

• Sub-steps:
  1. Open the hood and locate the serpentine belt.
  2. Use a socket to release tension from the belt tensioner and remove the serpentine belt.
  3. Inspect the belt for cracks, fraying, or glazing.
  4. If damaged, replace with a new serpentine belt (specify OEM part number).
  5. Reinstall the new belt, ensuring proper routing as per the diagram under the hood.

3. Check Power Steering System

• Sub-steps:
  1. Locate the power steering fluid reservoir.
  2. Remove the cap and check the fluid level; top off with recommended fluid if low.
  3. If fluid is contaminated (dark or debris present), flush the system.
  4. Inspect power steering lines for leaks or damage; replace if necessary.

4. Inspect Transmission Fluid

• Sub-steps:
  1. Locate the transmission dipstick (if applicable) or fill plug.
  2. Check fluid level and condition; if low or dirty, drain and replace with manufacturer-recommended fluid.
  3. Inspect for any signs of leaks around the transmission.

5. Inspect Wheel Bearings

• Sub-steps:
  1. Raise the front of the vehicle using a jack and secure with jack stands.
  2. Spin each front wheel; listen for any grinding or roughness.
  3. If noise is detected, replace the wheel bearings as necessary.