why does my BMW X5 F15 (2014-2019) have low oil pressure

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical issues.

2. Check Oil Level

• Remove the dipstick and wipe it clean.
• Reinsert the dipstick fully, then remove it again to check the oil level.
• If low, add the appropriate oil type (refer to the owner's manual).

3. Replace Oil Filter

• Use an oil filter wrench to remove the old oil filter.
• Ensure the rubber O-ring from the old filter is not stuck to the engine.
• Lubricate the O-ring of the new filter with fresh oil and install it, tightening by hand.

4. Inspect and Replace Oil Pressure Sending Unit

• Locate the oil pressure sending unit (typically near the oil filter).
• Disconnect the electrical connector and unscrew the sending unit using a socket.
• Install the new sending unit and reconnect the electrical connector.

5. Replace Oil Pump (if necessary)

• Drain the engine oil by removing the oil drain plug and allowing it to fully empty.
• Remove the oil pan by unbolting it and carefully prying it off.
• Unscrew the oil pump from its mounting location.
• Install the new oil pump, ensuring proper alignment and torque specifications are followed.
• Reinstall the oil pan with a new gasket and torque the bolts to the manufacturer's specifications.

6. Refill Engine Oil

• Reinstall the oil drain plug and fill the engine with new oil through the oil fill cap.
• Start the engine and let it run for a few minutes to circulate the oil.