Had alarm for three months now issue....

DSMEVOLUTION · Aug 28, 2007, 08:05 PM

Ok I recently had a code alarm pager alarm system professionally installed on my car a few months back. The alarm is very well designed and it is exactly what I was looking for in regards to added security. Anyways just recently my alarm has been going off about 3-4 times a day and it's not because of the shock sensors. It's actually going off because it says one of my doors has been opened. At first it scared me because I thought someone was actually breaking into my car but to my suprise all doors were closes and locked.

I called the alarm shop that installed my system and they said that it's actually quite common on newer cars and it sounds like a bad door trigger. My questions is for those of you that have pager systems on your car. Has anyone ever experienced something like this before? I checked all the door triggers and all seems fine. My car only has 20k on it so it's not very old at all. The shop said it cound be condensation causing it to trigger randomly. I'm stumped on what to do.

bigric09 · Aug 28, 2007, 08:07 PM

i have no issues...i have the compustar 290fm-as i think is the model

batmanlee · Aug 28, 2007, 08:47 PM

Trying using diodes to allow signal to be sent only to the alarm. I know my trunk had the problem.

YtDiamond05 · Aug 28, 2007, 09:40 PM

They are going to fix it right? Would be wierd for the door trigger to go bad after few months after install, but possible. Just have them fix it and find out exactly whats up. Good luck!

w8lifter21 · Aug 29, 2007, 09:37 AM

Does it happen after you have driven the car? Just some food for thought:

A few years 2-3 years ago I was working on a 2002 Mustang and installing the very same code alarm on it. I would start the car, turn it off, arm the alarm and wait. You could set your watch to it, every 31 minutes the alarm would go off and it was saying that the door triggers are what tripped the alarm. So I called our tech support line because I was out of answers(diodes didn't fix it). They said that after those 31 minutes, the ECU goes into "sleep" mode. When the car is turned off there is a small amount of voltage still on the door trigger wire. The reason for that is because the ECU uses the door trigger as a factor whe figuring if it needs to prime the fuel pump when you open the drivers door, similar to what VWs do. When the ECU goes into "sleep" mode, there is no voltage on the wire, which is the same as if you were to open the door, and it sets the alarm off. The fix was to use the dome light wire as the trigger instead, or grab the door trigger wire from another spot in the car with diodes, but I can't remember where. I have no clue if an Evo does the same thing, just a similar experience I had with the same alarm. Maybe have your installer check it out.

DSMEVOLUTION · Aug 29, 2007, 11:07 AM

w8lifter21 that's pretty interesting but mine is very random. It would go off in the morning when I have not driven the car in almost 12 hours and it would go off when I got back from work. For instance it has not given me an issue at all today. My installer said it might have been some water that got inside, it's looks like your from Vernon Hills so you know about our recent flash floods in the area. I asked the installer why my dome light would not be on when it says a door is open and he expalined to me that it is two different things and the trigger itself has nothing to do with the domelight. Wehn they first installed my alarm my domelight would not go on when I unlocked the doors. I brought it back to them and they had to wire it up, so I guess it makes sense.

w8lifter21 · Aug 31, 2007, 01:53 PM

I personally don't think water has anything to do with it. Condensation or very high humidity MAYBE. It could also be a loose connection. The dome light and the door triggers are tied together. How do you think the domelight knows when to come on when the door opens? He is talking about when you hit unlock, some cars have to be wired up where the alarm turns on the dome light. Some cars automatically turn the light on when the doors are unlocked, some do not. If you are in the area, and want a 2nd opinion, let me know, i'd be happy to take a look at it for you.

DSMEVOLUTION · Sep 1, 2007, 11:39 AM

Well I was going to bring it in on Friday but it stopped going off. It only did it for two days and that's it. Something obviously had to cause it but the question is still up in the air.

w8lifter21 I think what my installer meant but the dome light not being on when the alarm goes off is the fact the it might be just making a very faint connection which will trigger the fact that the door has been opened but not enough to keep to dome lights on.

My question is in regards to where the faulty connection might be coming from. Is it coming from the alarm itself or the door trigger? Also is their a possibility that radio interference could be causing this? Just a thought....

w8lifter21 are you a professional installer because you said that you have installed one on a mustang before? If it happens again I will contact you to see if you can take a look at it. Vernon Hills is not too far away from me.

Dennis F · Sep 2, 2007, 12:19 AM

Ford uses door triggers to the BCM for the light to turn on inside. The Evo uses a common trigger, it is a white wire on the top of the fuse box while the ford has a wire for each door, which need to be diode isolated, don't confuse the two.

There are to many possibities for it to be, bring it back and leave the car with them for awhile.

DSMEVOLUTION · Sep 2, 2007, 08:05 AM

Well they did want me to bring it in so when it does go off they can see for themselves and check to see exactly what might be causing it. However like I said in the last post it stopped doing it and only did it for 2 days anyways. I'll have to see if it comes back.

ImJoey · Sep 12, 2007, 02:05 AM

Thats crazy same exact situation.I have no clue whether I should take it to the dealer or to my alarm installer.Im going crazy.Had to disconnect the battery tonight.The alarm is possessed.I noticed the door light stays on with all doors closed.If you find the problem please pm me OP.

DSMEVOLUTION · Sep 12, 2007, 09:02 AM

Well in your case I wouldn't take it to the dealer because it's not a factory part. Mine just went away after 2-3 days and it hasn't happened since then. I really think it had something to do with water because about 2 days prior I drove through a huge puddle when we had flash floods. The water was almost up to the bottom of my door and i'm not lowered! Your situation sounds likes a faulty door trigger if the dome light does not turn off.

ImJoey · Sep 18, 2007, 01:35 AM

deff has something to do with water.Pouring out tonight.Suddenly the rain is gone 3 am alarm goes off.I go outside everythings fine.I turn the alarm off and open then close doors.I notice the open door light is on again with all doors closed.As you said it went away then rain came and tadaa! Doors are showing open somewhere but al closed.

PS dome light turns off.And the light isnt fully lit.Its very faintly on.When I really open the doors it gets brighter.

Matthew333 · Sep 18, 2007, 02:26 AM

wow, I think you have a bad alarm brain. I was confused @ the door wires, as I installed an aalarm on my wifes sport trac(ford) at the same time.

evo4g63awd · Sep 18, 2007, 08:48 AM

no you do not have to diode isolate all the doors. its unnecessary. it may be a problem on your car itself (the doorpin) but i doubt that too. To test, go to each door. open one door only, dome light comes on, press in door pin, if dome light goes off. door pin works fine. and go to each door independently. i work with alarm systems all of the time, and not to bash on code alarms, but i have seen the most problems with those systems compared to any other brand. it is probably the unit itself...