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Alarm goes off by itself


More then likely you have a bad door ajar switch, without a scan tool, you can not tell which one, but thats the moat likely cause, when your alarm is on and it goes off for no reason the computer is seeing the door switch change from closed to open, thinking door is open it sets alarm.

Aug 06, 2014 | 1997 Pontiac Sunfire

1 Answer

My 91 caprice horn does'nt work from the steering wheel but when my alarm goes off it blows


You have 2 point of contact one is the alarm and the other is the horn switch itself, the horn switch is non op,

Mar 12, 2012 | Cars & Trucks

1 Answer

1998 v6 regular mustang the original factory installed alarm system activates by itself 1-3 times a day for no reason.Once the car key is put into door and opened the alarm will go off. Also, the interior...


this happened to us when we got a new key and had it programmed with the car. anytime we locked the doors and opened them with the key instead of the remote, the alarm would set itself off. we took out the fuse for the alarm.

Jun 14, 2011 | 1998 Ford Mustang

1 Answer

The alarm on my 528i 98' goes on for no reason ? any idea


There is a short in the transponder,or tranducer itself, are you near a garage door opener,like when someone opens there door and it signal you alarm, Its either picing up a alarm signal else where or its sensitivity is to sensitive itself. depends on the alarm itself there are resistor adjustment for yours, its on the reciever. you may want to adjust the sensitivity so if a feather falls on it it dont go off

Apr 23, 2011 | 2008 BMW 528i Sedan

1 Answer

Whenever i unlock my camry manualy ( key in the door ) the alarm goes off. Also if i open the back door before the front door the alarm goes off. I have to use the remote key or i cant get into my car and...


this is due to a bad switch in the drivers door, when you use the key to unlock the door it should shut down alarm, also the alarm module may be going bad, the alarm is setting itself on, when ever you lock the door the alarm turns on, you will need to replace the switch on the drivers door or unlock the passenger side door that also has a switch that disarms it, the switch is on the lock itself, thats the problem you are having , good day,

Apr 15, 2011 | 1997 Toyota Camry

1 Answer

2006 saturn ion dome light goes on by itself and


When this happened to mine it ended up being a bad door switch. The alarm, dome/map lights and electric door locks are all connected to the door switches. It cost $65 for diagnosis, parts and labor at Saturn of South Burlington VT

Jan 05, 2010 | 2006 Saturn ION

1 Answer

VW Beetle Alarm goes off for no apparent reason


the sensitivity on the alarm itself is too high, or there is something around the car that is interfering with the frequencies that are sent / received by the alarm itself, like other car alarms, power lines (mine actually did it when i parked under a power line) or the alarm unit itself is malfunctioning.


make sure that nothing is around to the (other cars with alarms) or look up under your dash, above your pedals (might have to take the trim plate off) and / or turn the sensitivity knob (flat-head screw driver, or just a simple protruding knob) down. make sure the battery in the remote is good too. if it stil ldoes it after this, then your remote needs to be reprogrammed.

Sep 24, 2009 | 2004 Volkswagen Beetle

1 Answer

The horn goes off by itself. The alarm sometimes


Sounds like you have a short in your wiring. Check the wires to make sure none are touching

Aug 13, 2009 | 1998 Ford Escort

1 Answer

Alarm system goes off by itself


Your system may have a backup battery that has low voltage when the car is turned off. You may have to look under the dash to see if you can find the main computer for the alarm.

Jan 03, 2009 | 2001 Jeep Grand Cherokee

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