On-Vehicle Inspection [11/2023 - ]: Procedure

WARNING: This page is about a different car, the 2025 Toyota Highlander, 2024 Toyota Highlander, and 2023 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE OIL LEVEL
1. Warm up and stop the engine, then wait for 5 minutes.
2. Check that the engine oil level is between the low level and refill upper limit marks on the engine oil level dipstick.
  If the level is low, check for engine oil leaks and add engine oil to the refill upper limit mark.
  
  NOTE:
  Do not fill to above the refill upper limit mark.
  
  HINT:
  
  A certain amount of engine oil will be consumed while driving. In the following situations, engine oil consumption may increase, and engine oil may need to be refilled in between oil maintenance intervals.
  - When the engine is new, for example directly after purchasing the vehicle or after replacing the engine.
  - If low quality engine oil or oil of an inappropriate viscosity is used.
  - When driving at high engine speeds or with a heavy load (when towing, etc.), or when accelerating or decelerating frequently while driving.
  - When idling for a long time, or when driving frequently through heavy traffic.
  When judging the amount of oil consumption, keep in mind that the oil may have become diluted, making it difficult to judge the true level accurately.
CHECK ENGINE OIL QUALITY
1. Check the engine oil for deterioration, water intrusion, discoloration or thinning.
  If the quality is visibly poor, replace the engine oil and oil filter sub-assembly.

INSPECT OIL PRESSURE

Start the engine and warm it up until the engine oil temperature is 75 to 85°C (167 to 185°F).

Powertrain > Engine > Data List

Tester Display
Engine Oil Temperature Sensor

Read the Data List.

Powertrain > Engine > Data List

Tester Display
Engine Speed
Engine Oil Temperature Sensor
Engine Oil Pressure

Engine Oil Pressure

Engine Speed	Engine Oil Temperature Sensor	Specified Condition
1000 rpm	75 to 85°C (167 to 185°F)	110 to 210 kPa (gauge) [16 to 30 psi (gauge)]
2000 rpm		150 to 300 kPa (gauge) [22 to 44 psi (gauge)]
3000 rpm		200 to 380 kPa (gauge) [29 to 55 psi (gauge)]

If the result is not as specified, check the quality of the engine oil and check the oil paths for clogging. Repair or replace if necessary. After performing replacement or repairs, if the engine oil pressure is not as specified, perform the confirmation driving pattern for DTC P0524-77, P15F0-09, P15F0-77, P15F1-09, P15F1-77 in SFI System and check for DTCs.

Refer to DTC P0524-77: Engine Oil Pressure Too Low (Severe); DTC P15F0-09: Engine Oil Pressure Too Low (Moderate); DTC P15F0-77: Engine Oil Pressure Too Low (Minor); DTC P15F1-09: Variable Oil Pump Component Failure; DTC P15F1-77: Variable Oil Pump Commanded Position Not Reachable [10/2022 - ]