On-Vehicle Inspection

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE OIL LEVEL
1. Warm up the engine, then stop the engine and wait for 5 minutes.
2. Check that the engine oil level is between the low and full level marks on the level gage.
  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 intrusion, discoloring or thinning.
  If the quality is visibly poor, replace the oil.
  
  Oil grade:
  
  Use API grade SL "Energy-Conserving", or ILSAC multigrade engine oil.
  
  SAE 5W-30 is the best choice for good fuel economy, and good starting in cold weather.
  
  If SAE 5W-30 is not available, SAE 10W-30 may be used.
  
  However, it should be replaced with SAE 5W-30 at the next oil replacement.
  
  Fig 1: Viscosity Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT OIL PRESSURE
1. Disconnect the oil pressure switch connector.
2. Using a deep socket wrench 24 mm, remove the oil pressure switch.
  
  Fig 2: Removing Oil Pressure Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Install the oil pressure gauge.
4. Warm up the engine.
5. Inspect the oil pressure.
  Oil pressure:
  
  Fig 4: Oil Pressure Specification Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Apply adhesive to 2 or 3 threads of the oil pressure switch.
  Adhesive:
  
  Part No. 08833-00080, THREE BOND 1344, LOCTITE 242 or equivalent
  
  Fig 5: Applying Adhesive To Oil Pressure Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Using a deep socket wrench 24 mm, install the oil pressure switch.
  Torque: 15 N.m (153 kgf.cm, 11 ft.lbf)
  
  NOTE: Do not start the engine within 1 hour of installation.
8. Connect the oil pressure switch connector.
9. Check for the engine oil leaks.