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355 alarm

Discussion in '348/355' started by Randy, Apr 1, 2006.

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  1. Randy

    Randy Formula 3

    Nov 9, 2003
    1,012
    Illinois
    Full Name:
    Randy
    #1 Randy, Apr 1, 2006
    I just got a 1997 355 last night and I can't get the key fob alarm button to work. Does anyone know how to disconnect it or over-ride it.
     
  2. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,645
    Northern California
    Full Name:
    Greg Calo
    #2 GCalo, Apr 1, 2006
    It probably needs a new battery.

    Look in the manual how to open the unit and then replace the battery.

    The 360 fob has a small philips screw, but I am not familiar with the 355.
     
  3. Randy

    Randy Formula 3

    Nov 9, 2003
    1,012
    Illinois
    Full Name:
    Randy
    #3 Randy, Apr 1, 2006
    Unfortunately, its not the battery. The red light comes on, so I think it's emitting a signal. Do you know where the sensor is?
     
  4. tstafford

    tstafford Formula Junior

    Mar 4, 2006
    754
    Nashville
    Full Name:
    Tim
    #4 tstafford, Apr 1, 2006
    I would still try on the battery replacement. Could be sending a weak signal. It's worth trying :).
     
  5. ferraridriver

    ferraridriver F1 Rookie

    Aug 8, 2002
    4,151
    Bay Area Calif.
    Full Name:
    Dave
    #5 ferraridriver, Apr 1, 2006
    Its not the battery in the fob, its the batteries in the siren module. search "355 alarm" lots of posts
     
  6. Gershwin

    Gershwin F1 Veteran

    Feb 21, 2005
    6,415
    Kentucky
    #6 Gershwin, Apr 1, 2006
    You have to click it (turn the alarm off) when it is literally within inches from the ignition on my car.
     
  7. pino

    pino Karting

    Nov 1, 2003
    208
    South Central PA
    #7 pino, Apr 1, 2006
    You cannot disconnect it as it is part of the FI ECU.
    You can override it by cycling the key the appropriate number of times as described in your manual. But you need to have the code for cycling the ignition.
    How many fobs do you have? You should have 3, one of which is red. The red one is the "master" so don't lose it!
     
  8. GCalo

    GCalo F1 Veteran

    Sep 15, 2004
    7,645
    Northern California
    Full Name:
    Greg Calo
    #8 GCalo, Apr 1, 2006
    Randy,

    Did you contact the prir owner to see if there is any additional alarm associated with the car?

    This has to be frustrating.
     
  9. kev355

    kev355 Rookie

    Jul 6, 2006
    15
    #9 kev355, Jun 17, 2024
    A23 battery (12v) for fob . Dim red light on key fob equals weak battery
     

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