Cell Phone Alarm Engage?

[tagyoreit]

Strange thing... I wired an extra cigarette lighter to my window switch and tucked it under my seat so I can charge my cell phone when the car is off. I just realized if I call it, or anyone calls it when it is charging, my alarm goes off... weird. Is it because the alarm system is detecting an electrical spike it's wiring system?

[SQ GT-S]

Umm, that's a very wierd thing. I would recommend wiring the cig lighter to a different power source. It seems that the wire you are using is not liking a phone call. Question, is it a Nextel?

Curt

[lxj7105]

try this, lock yourself in the car and arm it. now try to open the wing. what happens, the alarm goes off.

[Need4Spd]

I'm not familiar with alarm systems but if you have the stock alarm system could the ringer be somehow replicating the sound needed to cause the glass breakage sensor (to the left of the steering column) to activate the alarm? Its a faaaar shot i know, but I dunno what your ringer is like and how loud or at what pitch it is.. try unplugging it and then calling it. heh who knows

[ScorpionX2]

Here is another long shot. Some alarms have a voltage sensor so that if something like say, a domelight, comes on, the alarm goes off. Maybe same principle here...but again, not sure.

[tagyoreit]

Thanks for the input, not really super important but I was kinda curious. I thought about the break sensor too cause I just changed my ringer recently... let me change it back and try it... guess that would eliminate that theory. The voltage spike was also another guess of mine.

[IRL]

I am willing to bet your aftermarket alarm...or stock toyota alarm has the glass break sensor. This is actually a very common problem and I hear about it ALOT.

Customers always forget cell phones in cars...when some of those ringing tones hit....its more than enough to trip the glass break sensor.

Voltage spikes...very very very doubtfull as the amount of voltage spike required to trip an alarm is alot higher than the tiny tiny draw your cig lighter will have when your phone rings...elminate this one. :)

[tagyoreit]

We were right, it's the glass sensor...