Toyota Highlander Service Manual: Power steering system

Power steering

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Precaution

1. HANDLING PRECAUTIONS FOR STEERING SYSTEM (a) Care must be taken when replacing parts. Incorrect replacement could affect the performance of the steering system and result in a driving hazard. ...

More about Toyota Highlander:

Inspection
1. INSPECT VENTILATION VALVE SUB-ASSY (a) Install a clean hose to the ventilation valve. (b) Check ventilation valve operation.  Blow air into the cylinder head side, and check that air passes through easily. CAUTION: Do not suck air through the valve. Petroleum substances insi ...