why does my BMW 5 Series G30/G31 (2017-2024) make a whistling sound at high speeds?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the battery if any electrical components are involved.

2. Seal Inspection and Replacement

• Sub-steps:
  1. Remove any trim pieces necessary to access the door and window seals.
  2. Inspect the seals for cracks, tears, or deformation.
  3. If the seals are damaged, remove the old seals carefully using a trim removal tool.
  4. Clean the surfaces where new seals will be applied using isopropyl alcohol.
  5. Install new seals, ensuring they are properly aligned and securely attached.

3. Body Panel Check

• Sub-steps:
  1. Inspect body panels, especially around the doors and trunk for misalignment.
  2. Tighten any loose bolts or fasteners using a socket set.
  3. Adjust the alignment of any misaligned panels by loosening and repositioning.

4. Underbody Inspection

• Sub-steps:
  1. Lift the vehicle using a jack and secure it with jack stands.
  2. Inspect the undercarriage for loose shields or components, especially around the wheel wells.
  3. Tighten or replace any loose or damaged components.

Tools Required:

• Socket set
• Trim removal tool
• Isopropyl alcohol
• Jack and jack stands
• Smoke machine (optional)

Parts Required:

• Replacement door/window seals
• Fasteners or clips (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical components.
• Ensure the vehicle is securely lifted and supported before working underneath.