550 Alarm/Imobilizer Issues | FerrariChat

550 Alarm/Imobilizer Issues

Discussion in '456/550/575' started by nzo4re, Sep 7, 2011.

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  1. nzo4re

    nzo4re Karting

    Mar 13, 2003
    197
    San Jose, CA
    Full Name:
    Tom Lassen
    Pressing button on fob has no effect.
    No door lock/unlock
    No starting (no cranking)
    Main battery fully charged
    Battery for chirper has been dead for a while.
    Replaced the battery in the fob with no change in condition.
    Followed instructions in little manual (have not tried manually entering code).

    Any ideas?

    Thanks
     
  2. maranello72

    maranello72 Formula Junior

    Jul 4, 2009
    354
    Munich, Germany
    Full Name:
    Stefano
    Tom,

    does the red LED on the fob light when you press the button?
    The terminals which connect to the battery sometimes have poor contact.

    Also, the fob might be out of sync with the car's alarm ECU. Press the fob at least three times in rapid succession ro resync it.
    Do the same if you try to use another fob after a long time.

    The fact that the siren's battery is dead shouldn't be a problem, you just don't get the chirps. You can still tell that the immobilizer is disengaged when the red LED on the dashboard is not flashing (although it will stay on once the engine is running).

    Stefano
     
  3. nzo4re

    nzo4re Karting

    Mar 13, 2003
    197
    San Jose, CA
    Full Name:
    Tom Lassen
    Thanks Stefano,

    Yes,the LED on the fob illuminates, so I think I have good contact and I've tried re-synching the fob with 3 button pushes within 10 seconds with no help.

    The fact that the driver's door window doesn't go up and down with door opening/closing is a clue?
     
  4. maranello72

    maranello72 Formula Junior

    Jul 4, 2009
    354
    Munich, Germany
    Full Name:
    Stefano
  5. nzo4re

    nzo4re Karting

    Mar 13, 2003
    197
    San Jose, CA
    Full Name:
    Tom Lassen
    I solved the problem

    Loose battery connection, positive side on main battery. Tightened that up, re-synched the fob and everything came to life.

    Thanks for the help!
     
  6. wbklink

    wbklink F1 Rookie

    Sep 2, 2009
    3,420
    Los Angeles
    Full Name:
    Bill Karp
    love a happy ending !

    cheers,

    Bill
     

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