battery drain

[jmack17m]

When i got my 94 jetta i activated the door lock alarm and heard a humming noise coming from the trunk. since then my battery wont hold a charge. what might be the problem.

[zackforbing]

all the things you've listed as maybe problems are normal. have you thought that maybe the battery was dead when you bought it? have you bought a new battery yet?

[jmack17m]

The battery was replaced before I bought it. It worked fine for about a week and then I turned on the alarm. Everything went downhill after that. What is that humming noise?????

[zackforbing]

someone in here mentioned that noise. I'm pretty sure they said it was the locking mechanism.

[boschmann]

It's a vacuum pump, the door locks operate on vacuum. Unless it runs for a very long time it wouldn't drain the battery. Have the battery tested and the electrical system checked for current draws. I would avoid taking it to a chain that sells batteries as they have a tendency to replace when it's not really necessary, I'd take it to a full service repair shop.