my BMW 5 Series F10/F11 (2010-2017) has a high-pitched whine when driving what to do

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a flat surface and engage the parking brake.
• Disconnect the battery if working on electrical systems.

2. Inspect and Replace Tires (if necessary)

• Sub-steps:
  1. Remove the wheel from the affected tire.
  2. Inspect for uneven wear; replace if necessary.
  3. Ensure tires are properly inflated to manufacturer specifications.
• Tools Required: Jack, jack stands, lug wrench.
• Safety Warnings: Ensure the vehicle is securely supported on jack stands before working underneath.

3. Replace Serpentine Belt (if worn)

• Sub-steps:
  1. Remove the serpentine belt by releasing tension using a belt tensioner tool.
  2. Inspect pulleys for damage; replace if necessary.
  3. Install a new serpentine belt according to routing diagrams.
• Tools Required: Belt tensioner tool, socket set.
• Safety Warnings: Ensure engine is off and cool before working on belts.

4. Change Differential Fluid (if contaminated)

• Sub-steps:
  1. Drain the old differential fluid using a drain pan.
  2. Inspect for metal shavings or contaminants.
  3. Refill with new differential fluid as per manufacturer specifications.
• Tools Required: Socket set, drain pan, fluid pump.
• Safety Warnings: Allow fluid to cool before handling.

5. Replace Wheel Bearings (if faulty)

• Sub-steps:
  1. Remove the wheel and brake assembly.
  2. Remove the hub assembly and press out the old bearings.
  3. Install new wheel bearings and reassemble the hub.
• Tools Required: Bearing puller, socket set, torque wrench.
• Safety Warnings: Follow proper lifting and support procedures.