my BMW 5 Series F10/F11 (2010-2017) has a check engine light and no power

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to ensure safety.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Multimeter
• Vacuum gauge

2. Addressing Error Codes

• Connect the OBD-II scanner and retrieve error codes.
• Note down all codes for reference.
• Clear the codes and perform a test drive to see if they return.

3. Inspecting and Cleaning the Throttle Body

• Remove the air intake duct connected to the throttle body.
• Unbolt the throttle body from its mounting.
• Clean the throttle body with throttle body cleaner and a soft cloth.
• Reinstall the throttle body, ensuring a proper seal.

4. Checking Fuel System

• Verify fuel pressure using a fuel pressure gauge.
• If pressure is low, inspect and replace the fuel pump if necessary.
• Check fuel filter for clogs and replace if needed.

5. Examining Ignition Components

• Remove and inspect spark plugs for wear or fouling.
• Replace any faulty spark plugs and check ignition coils for proper function using a multimeter.
• Replace any defective ignition coils.

6. Inspecting for Vacuum Leaks

• Use a vacuum gauge to check for leaks in the intake system.
• Repair or replace any damaged hoses or connections.