Mechanics

SECURITY ALARM GOES OFF WITHOUT WARNING IN THE MIDDLE OF THE NIGHT

2002 Nissan Altima • 135,000 miles

Alarm goes off while parked in garage. Disconnected horn relay since it also happened during the day. Obviously, meant I would have to drive without horn. Could not locate relay for anti theft. Where is it located.
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KAyjoe
May 23, 2013.




You may have disconnected the horn but the security system would still be triggerred and this can drain the battery.

Check door switches and hood switch. One could be out of adjustment.

KHLow2008
May 23, 2013.


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