On-Vehicle Inspection

WARNING: This page is about a different car, the 2007 Lexus SC 430. 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.
  Do not fill engine oil above the full level mark.
  
  HINT:
  
  SAE 5W-30 is the recommended choice for this engine for good fuel economy and good starting in cold weather.
CHECK ENGINE OIL QUALITY
1. Check the oil for deterioration, water contamination, discoloring or thinning. If the quality is visibly poor, change the oil.
  Oil grade:
  
  ILSAC multigrade engine oil is recommended. SAE 5W-30 is the best choice for this vehicle for good fuel economy and good starting in cold weather.
  
  Fig 1: Checking Oil Viscosity
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK OIL PRESSURE

Remove the engine under cover.
Remove the oil pressure switch.
Install an oil pressure gauge.
Warm up the engine.

Measure the oil pressure.

Standard pressure

OIL PRESSURE SPECIFICATION

Condition	Specified Condition
Idle	29 kPa (0.3 kgf/cm² , 43 psi) or more
3,000 rpm	294 to 588 kPa (3.0 to 6.0 kgf/cm² , 43 to 85 psi) or more

If the oil pressure is not as specified, check the oil pump (see OIL PUMP ).

Fig 2: Checking Oil Pressure

Remove the oil pressure gauge.
Reinstall the oil pressure switch.
1. Apply adhesive to 2 or 3 threads of the oil pressure switch.
  Adhesive:
  
  Toyota Genuine Adhesive 1344, Three Bond 1344 or equivalent
2. Install the oil pressure switch.
  Torque: 15 N*m (150 kgf*cm, 11 ft.*lbf)
Check the engine oil leak.
Install the engine under cover.