Warm up and stop the engine, then wait for 5 minutes.

Check that the engine oil level is between the low level and full level marks on the engine oil level dipstick.

If the level is low, check for engine oil leaks and add engine oil to the full level mark.

NOTICE:

Do not add engine oil to above the full level mark.

Check the engine oil for deterioration, water intrusion, discoloration or thinning.

If the quality is visibly poor, replace the engine oil and oil filter element.

Remove the engine oil pressure switch assembly.

Click hereEngine / Hybrid System>1ZR-FE LUBRICATION>OIL PRESSURE SWITCH>REMOVAL

CAUTION:

Make sure the engine is cold when removing the engine oil pressure switch assembly to prevent burns caused by hot engine oil.

Warm up the engine.

HINT:

After warming up the engine, the engine coolant temperature is 75 to 100°C (167 to 212°F).

Check the oil pressure.

Standard Oil Pressure:

Engine Condition	Oil Pressure
Idling	25 kPa (0.3 kgf/cm2, 3.6 psi) or higher
3000 rpm	150 to 550 kPa (1.5 to 5.6 kgf/cm2, 22 to 80 psi)

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

Click hereEngine / Hybrid System>1ZR-FE LUBRICATION>OIL PUMP>INSPECTION

Remove the oil pressure gauge with the adapter.

CAUTION:

Make sure the engine is cold when removing the oil pressure gauge to prevent burns caused by hot engine oil.

Install the engine oil pressure switch assembly.

Click hereEngine / Hybrid System>1ZR-FE LUBRICATION>OIL PRESSURE SWITCH>INSTALLATION

Inspect for engine oil leaks.

Click hereEngine / Hybrid System>1ZR-FE LUBRICATION>OIL AND OIL FILTER>REPLACEMENT