how to tell if my BMW 5 Series G30/G31 (2017-2024) fuel pump is failing

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle’s battery to ensure safety during the repair.
• Allow the vehicle to cool down, especially if it has been running.

2. Remove the Fuel Pump

• Tools Required: Socket set, fuel line disconnect tool, screwdriver, safety goggles.
• Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls.
• Disconnect the battery.
• Access the fuel pump by removing the rear seat or accessing the fuel tank as required.
• Disconnect the electrical connector and fuel lines from the pump carefully.
• Unscrew the retaining ring or bolts holding the fuel pump in place and remove the pump assembly.

3. Inspect and Replace

• Inspect the old fuel pump for signs of wear or damage, such as cracks or corrosion.
• If replacement is needed, install the new fuel pump ensuring that it’s seated properly.
• Reconnect the fuel lines and electrical connector, ensuring they are secure.

4. Reassemble and Test

• Reinstall the retaining ring or bolts to secure the fuel pump in place.
• Reconnect the battery.
• Install any components that were removed to access the fuel pump, such as the rear seat.
• Replace the fuel pump fuse and verify it is functioning correctly.