Verlauf von "alarm not stoping, had to disconnect the battery" bearbeiten

I don't have any specific experience with this problem but you can try these:

Remove the alarm fuse.  You should be able to look at the owners manual to locate the specific fuse, if there is one.

Disconnect the car horn (assuming this is the source of the sound).  This won't stop the alarm from activating but will silence it.  This solution can drain the battery too.

Disconnect the battery while the car is parked.

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