why does my BMW 5 Series F10/F11 (2010-2017) engine light flash when accelerating?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat, stable surface.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, pliers
• Sub-steps:
  1. Remove the engine cover (if applicable) by unscrewing bolts or lifting off.
  2. Disconnect the electrical connectors from the ignition coils.
  3. Remove the ignition coils using a socket wrench.
  4. Inspect and replace spark plugs if worn or fouled (set gap to manufacturer specifications).
  5. Reinstall new ignition coils, ensuring they are seated properly and reconnect electrical connectors.
  6. Reinstall the engine cover.

3. Check and Clean Fuel Delivery System

• Tools Required: Fuel pressure gauge, fuel line disconnect tool
• Sub-steps:
  1. Connect a fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the "On" position (without starting) and check fuel pressure against specifications.
  3. If pressure is low, inspect and replace the fuel filter and check the fuel pump operation.
  4. If necessary, clean the fuel injectors using a recommended cleaning kit or replace them if defective.

4. Inspect Air Intake and Exhaust Systems

• Tools Required: Screwdrivers, flashlight
• Sub-steps:
  1. Inspect the air filter and replace it if dirty or clogged.
  2. Check the intake ducting for cracks or loose connections that could cause a vacuum leak.
  3. Examine the exhaust for any signs of blockage or leaks, especially at the catalytic converter.
  4. Replace components as necessary.