What is the No. 648 relay in Volkswagen Lavida?

1 Answers
DeclanLynn
09/01/25 7:33am
Volkswagen Lavida's No. 648 relay is the main relay, whose primary function is to control instrument power supply. Here is an introduction about relays: Features: The relays used in automobiles have high switching load capacity and excellent impact and vibration resistance. Composition of automotive relays: They consist of a magnetic circuit system, contact system, and reset mechanism. The magnetic circuit system includes components such as iron core, yoke, armature, and coil. The contact system comprises parts like static reed, moving reed, and contact base. The reset mechanism is composed of reset reeds or tension springs. Composition of contact resistance: The contact resistance present between the contacts of automotive relays mainly consists of two parts: constriction resistance and surface film resistance.
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