Standard 103: Windshield Defrosting and Defogging Systems
Scope and Purpose:
This standard specifies requirements for windshield defrosting and defogging systems to ensure that each vehicle shall have a windshield defrosting and defogging system which operates either by applying heat to the windshield or by dehumidifying the air inside the passenger compartment of the vehicle.
Application:
Passenger cars, multipurpose passenger vehicles, trucks, and buses

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