my BMW 5 Series F10/F11 (2010-2017) makes a weird noise when turning the steering wheel

Solution

1. Preparation

• Gather all necessary tools and components.
• Park the vehicle on a flat surface and engage the parking brake.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Top Off Power Steering Fluid

• Tools Required: Funnel, clean rag
• Check the power steering fluid reservoir for proper fluid level.
• If low, add the recommended power steering fluid type (consult the owner’s manual).
• Inspect the fluid condition; if it appears dark or dirty, consider a fluid flush.

3. Inspect Power Steering System Components

• Tools Required: Socket set, wrench set
• Visually check for leaks around the power steering pump, hoses, and steering rack.
• If leaks are found, replace the affected hoses or seals.
• Use a wrench to check the tightness of connections; tighten if necessary.

4. Replace the Power Steering Pump (if faulty)

• Tools Required: Socket set, torque wrench, power steering fluid
• Remove the drive belt by loosening the tensioner.
• Disconnect the power steering pump from its mounts and remove the hoses.
• Install the new power steering pump, ensuring all connections are secure.
• Reinstall the drive belt and adjust the tension according to specifications.

5. Inspect Steering Rack and Tie Rod Ends

• Tools Required: Jack and jack stands, socket set
• Lift the vehicle and support it securely on jack stands.
• Inspect the steering rack for any visible damage or excessive wear.
• Check tie rod ends for play by attempting to move them with your hands; replace if necessary.

6. Reassemble and Fill System

• Once all faulty components have been addressed, reassemble any parts removed during the inspection.
• Fill the power steering system with fresh fluid and bleed the system to remove air bubbles.
• Reconnect the negative battery terminal.