why does my Toyota Highlander XU70 (2020-Present) have low oil pressure

Solution

1. Preparation

• Gather tools and parts before starting the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to ensure safety while working on electrical components.

2. Check and Replace Engine Oil

• Sub-step 1: Remove the oil drain plug using a socket set and allow the old oil to drain completely into a suitable container.
• Sub-step 2: Replace the oil filter using an oil filter wrench to ensure a proper seal.
• Sub-step 3: Install the drain plug back and torque to manufacturer specifications (typically around 25 ft-lbs).
• Sub-step 4: Fill the engine with new oil, ensuring to use the correct type (5W-20 or as specified in the owner's manual) and quantity (typically around 6 quarts).
• Sub-step 5: Start the engine and let it run for a few minutes, then check the oil level again to ensure it is within the recommended range.

3. Replace the Oil Pressure Sending Unit

• Sub-step 1: Locate the oil pressure sending unit (usually near the oil filter).
• Sub-step 2: Disconnect the electrical connector from the sending unit.
• Sub-step 3: Use a wrench to remove the sending unit and install the new one. Torque to specified value (usually around 15-20 ft-lbs).
• Sub-step 4: Reconnect the electrical connector.

4. Inspect and Replace Oil Pump (if necessary)

• Sub-step 1: If the oil pressure remains low after the previous steps, remove the oil pan after draining the oil again.
• Sub-step 2: Inspect the oil pump for wear or damage. If it appears faulty, remove the pump by unbolting it from the engine block.
• Sub-step 3: Install the new oil pump, ensuring to use a new gasket and torque the bolts to specified values.
• Sub-step 4: Reinstall the oil pan, ensuring a proper seal.