Re: Can car alarm be set off by cell phone?

["Tommy" <tommy at leesecurity dot net>]

My current motorola phone also does this when in close proximity to a
radio or computer speaker. My cell holder in the truck is close to the
radio and i always know before i recieve a call even when on vibrate.

alarman wrote:

> "DanK" <djk104@xxxxxxxxxxx> wrote in message
> news:1148301869.197031.19770@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > We have a 2004 Toyota with a factory installed car alarm.  The alarm
> > goes off randomly.  Sometimes a few times a day, some days not at
> > all.  No physical disturbance is setting it off (it does it even
> > sitting in our closed garage).  However, we noticed that it seems
> > to happen when my daughter's cell phone is in the car.  I am still
> > trying to confirm this relationship (by having the phone in there,
> > or not having it in there, and seeing when the alarm goes off).
> >
> > Could the cell phone be setting off the alarm?  It's nothing
> > obvious, like the phone being on "vibrate" mode, and receiving a
> > call.  Could the phone be sending a radio signal that is at a
> > frequency that sets off the alarm (like the frequency of the
> > emergency button on the key pad)?
> >
> > We had it at the Toyota dealer, but they didn't find anything (this
> > was before I made the cellphone connection).
> >
> > Thanks for any help!
>
> When I had a Nextel phone, I remember that it would cause noise on
> other devices like computers, radios, etc. This would occur whenever
> the phone was in proximity with these devices, and not just when
> placing or receiving calls.  js



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