Connect with us

Can car alarm be set off by cell phone?

Discussion in 'Security Alarms' started by DanK, May 22, 2006.

Scroll to continue with content
  1. DanK

    DanK Guest

    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!

    DanK
     
  2. alarman

    alarman Guest

    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
     
  3. Crash Gordon

    Crash Gordon Guest

    Anything's possible...especially if the alarm has some kind of sonic device.
    Put the cell phone in the car windows up in a garage and call the
    cellphone...try different ring tones & volume settings see what happens.

    | 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!
    |
    | DanK
    |
    |
     
  4. Tommy

    Tommy Guest

    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.
     
  5. PizzaHEMI

    PizzaHEMI Guest

    Yest it can......I had an older cell phone that set my alarm off all of the
    time....not sure why, but I confirmed it was the problem.
     
  6. Jim

    Jim Guest

    Four or five years ago, I had to move a smoke detector out of a
    business conference room. Every time someone would use a cell phone in
    the room, it would set off the fire alarm.

    At my office. When I'm using the office phone (land line) and my office
    assistants cell phone is going to get a call ( a few seconds before her
    cell phone rings) I hear strong clicking on the desk handset. Seems
    like it might be able to cause a problem with a sensitive circuit in a
    car alarm.
     
  7. Nomen Nescio

    Nomen Nescio Guest

    Jim said:
    Did the cell phone set off the smoke detector itself, or did the
    interference get into the control panel? Meaning, did the smoke detector's
    red LED latch on? What kind of smoke detector or panel was responsible?

    - badenov
     
  8. Jim

    Jim Guest

    Smoke detector would latch up. Was an older ESL smoke. I don't
    remember what revision. Owner didn't want to take a chance by just
    replacing with a new unit. I replaced it with a newer unit but out side
    and away from the conference room. Never tripped again, but who knows
    if it was due to the move or the new unit.
     
  9. mikey

    mikey Guest

    And folks walk around with these transmitters nestled up nice and
    close to their brains.



    *** ***
     
  10. Frank Olson

    Frank Olson Guest


    I keep switching mine between my two front pants pockets. That way the
    radiation expands the balls as symetrically as possible.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-