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Lock Switch Functionality Check

Model: Volkswagen Vento A3, MK 1 - Years: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
Part: Checks and maintenance

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Video tutorial

If the interior lights remain on when you lock the vehicle with the remote key (or directly with the mechanical key), it is likely that a lock is not functioning correctly. Inside the lock, there is a micro switch that signals the comfort module about the lock's status.

The failure of this micro switch is a common fault in these vehicles but fortunately easy to repair; it is not necessary to replace the entire lock, just disassemble it and replace the micro switch inside, which can be found at any electronics store.


Updated on 13 February 2026 by ScegliAuto


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