On-Vehicle Inspection

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE OIL LEVEL
1. Warm up the engine, stop the engine and wait 5 minutes. The oil level should be between the dipstick's low level mark and full level mark. If low, check for leakage and add oil up to the full level mark.
  NOTE: Do not fill with engine oil above the full level mark.
CHECK ENGINE OIL QUALITY
1. Check the oil for deterioration, water contamination, discoloring or thinning.
  
  Fig 1: Identifying Viscosity Measurement Scale
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the quality is visibly poor, replace the oil.
  
  Oil grade: API grade SM, Energy-Conserving or ILSAC, multi-grade engine oil is recommended. SAE 5W-30 is the best choice for your vehicle for good fuel economy and good starting in cold weather.
REMOVE ENGINE UNDER COVER
REMOVE ENGINE OIL PRESSURE SWITCH ASSEMBLY
1. Disconnect the oil pressure switch connector.
2. Using a 24 mm deep socket wrench, remove the oil pressure switch.
  
  Fig 2: Identifying Oil Pressure Switch Connector Terminal
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL OIL PRESSURE GAUGE
1. Install the oil pressure gauge with adapter.

CHECK OIL PRESSURE

Specification oil pressure

OIL PRESSURE SPECIFICATION

Item	Oil Pressure
Idle	80 kPa (0.8 kgf*cm² , 11.6 psi) or more
6,000 rpm	380 kPa (3.9 kgf*cm² , 55.5 psi) or more

If pressure is not as specified, check the oil pump.

Fig 3: Identifying Oil Pressure Gauge With Adapter

INSTALL ENGINE OIL PRESSURE SWITCH ASSEMBLY
1. Remove the oil pressure gauge.
2. Apply adhesive to 2 or 3 threads of the oil pressure switch.
  
  Fig 4: Applying Adhesive To Threads Of Oil Pressure Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Adhesive: Part No. 08833-00080, THREE BOND 1344, LOCTITE 242 or equivalent
3. Using a 24 mm deep socket wrench, install the oil pressure switch.
  Torque: 15 N*m (153 kgf*cm, 11 ft.*lbf)
  
  NOTE: Do not start the engine within 1 hour after installation.
4. Connect the oil pressure switch connector.
CHECK FOR ENGINE OIL LEAKS
1. Start the engine. Make sure that no oil leaks from the connection point of the oil filter cap.
  
  Fig 5: Identifying Oil Pressure Switch Connector Terminal
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL ENGINE UNDER COVER