how to diagnose low oil pressure warning in my BMW 5 Series F10/F11 (2010-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Park the vehicle on a flat surface and ensure the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Check and Top Up Engine Oil

• Remove the oil filler cap.
• Using a funnel, add the appropriate type of engine oil (consult owner's manual for specification) if the level is low.
• Replace the oil filler cap securely.

3. Replace Oil Filter

• Locate the oil filter underneath the vehicle.
• Use an oil filter wrench to remove the old oil filter.
• Apply a small amount of new oil to the rubber gasket of the new filter.
• Install the new oil filter and tighten it according to the manufacturer's specifications.

4. Inspect and Replace Oil Pressure Sending Unit

• Locate the oil pressure sending unit, typically found near the oil filter or engine block.
• Disconnect the electrical connector from the sending unit.
• Use a socket wrench to remove the sending unit.
• Install the new sending unit, tightening it to the specified torque (consult service manual for exact value).
• Reconnect the electrical connector.

5. Check for Leaks

• Start the engine and visually inspect for any signs of leaks around the oil filter and sending unit.
• Allow the engine to run for a few minutes and check oil pressure readings.