my Volkswagen Golf MK7 (2015-2019) has low oil pressure what should I check

Solution

1. Preparation

• Gather tools required: OBD-II scanner, socket set, oil pressure gauge, wrench set, and torque wrench.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical issues.

2. Check and Replace Engine Oil

• Remove the oil drain plug using a socket wrench and drain the old oil into a catch pan.
• Replace the oil filter using an oil filter wrench; ensure the rubber O-ring is removed with the old filter.
• Reinstall the drain plug and tighten it to the manufacturer’s specified torque (usually around 25 Nm).
• Fill the engine with the appropriate type and amount of new oil (consult the owner’s manual for specifications).

3. Inspect Oil Pressure Sending Unit

• Locate the oil pressure sending unit, typically found near the oil filter.
• Disconnect the electrical connector and remove the sending unit using a socket.
• Inspect the sending unit for damage or wear; replace if necessary.

4. Test Oil Pump Functionality

• If low pressure persists, remove the oil pump from the engine.
• Inspect the oil pump gears for wear and the pump housing for damage.
• Replace the oil pump if necessary, ensuring proper alignment during reinstallation.

5. Reassemble and Recheck

• Reattach all components removed during the process, ensuring all connections are secure.
• Reconnect the battery and start the engine.
• Check for leaks and listen for abnormal noises.