355 Alarm won't shut off but car starts | FerrariChat

355 Alarm won't shut off but car starts

Discussion in '348/355' started by TrojanFan, Mar 24, 2018.

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  1. TrojanFan

    TrojanFan F1 Veteran
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    Nov 17, 2008
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    Peter
    Anyone had this happen?

    Drove my 355 about 150 miles today. Flawless. Get her home and back into the garage. I need to lift her onto wheel dollies and move her over. I rased one wheel on the dolly - no issue. Went to raise the second wheel up but as soon as the dolly touched the wheel, the alarm went off - not even raised. It would not shut off with the fob. I was able to start the car and it still would not shut off. I needed to shut off the battery cutoff to get the alarm to stop and that took about 20 seconds after the cut off. Turned the battery switch back on and the alarm started up again. Had to shut the battery switch off again to stop the alarm.

    If working properly, the alarm should shut off with the fob but it didn't. The car should be imobalized with the alarm going off but it wasn't.

    Any ideas on the issue and how to correct?
     
  2. taz355

    taz355 F1 Veteran
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    Its likely the anti theft sensor for towing
     
  3. taz355

    taz355 F1 Veteran
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    #3 taz355, Mar 25, 2018
    Last edited: Mar 25, 2018
    I torget what they call it

    Its the antilift sensor. Likely malfunctioning once you set it down it should reset.
     
  4. Beetle

    Beetle Formula Junior

    Apr 10, 2013
    776
    Would it be a good idea to always turn battery isolation point to OFF? If your going to lift the car? This is a question not a cheeky comment as I'm interested to what peoples thoughts are. I noticed my dash light comes on after my car has been jacked up but after its driven the light goes out.
     
  5. Dave rocks

    Dave rocks F1 World Champ
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    I've jacked my car up / lifted the car dozens of times, never had an issue with the tilt sensor.
     
    Beetle likes this.
  6. taz355

    taz355 F1 Veteran
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    Well i have.
    It also went off once when i had my car inthe trailer towing it from the bumps.
    Only happened once when jacking
     
  7. taz355

    taz355 F1 Veteran
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    Which dash light comes on.

    Just read my above post was not meant to be cheaky dave.
     
  8. taz355

    taz355 F1 Veteran
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    As dave said doesnt allways happen.
    I usually turn it off but not all ways.
    Oth r than the alarm possibility it wont hurt anything
     
  9. Robb

    Robb Moderator
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    You may need a new battery. Happened to our ‘97

    Replacing the battery fixed the issue.

    Robb
     
  10. Beetle

    Beetle Formula Junior

    Apr 10, 2013
    776
    Top right hand corner of pilot lights. It's like a picture of the car with the wheels hanging down. It's more like long shockers than wheels really. Bit hard to explain. I'm pretty sure it's the anti lift light? Maybe not
     
  11. 97 Spider

    97 Spider Formula 3

    Dec 15, 2012
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    The anti lift is not active unless you have the alarm set. Maybe don’t jack up your car with the alarm on. I know that doesn’t help the OP but might prevent someone getting in the same place in the future.
     
  12. Dave rocks

    Dave rocks F1 World Champ
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    Alarm or immobilizer? I know my immobilizer has always been active because it self arms but you are correct, my alarm has always been unarmed.
     
  13. Mitch Alsup

    Mitch Alsup F1 Veteran

    Nov 4, 2003
    9,654
    This is a textbook problem of alarms and immobilisers as cars reach 20 years of age.
     
  14. 97 Spider

    97 Spider Formula 3

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    Yes, the alarm. If the alarm is set and turned on and the car is supposed to be sitting still then the tilt sensor is active and it will set off the alarm if the car is jostled/ lifted. If the alarm is not set then you can flip the car upside down and nothing will happen. (When all is functioning normally).

    Like you said the alarm and the immobilizer are different things so that’s why he can still shut the immobilizer off and start the car even though the alarm is going off.

    He’s got some issues with his alarm though since no matter how he set it off he should be able to get it to shut down with the fob.
     
  15. 97 Spider

    97 Spider Formula 3

    Dec 15, 2012
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    My advice to the OP is to turn the battery switch back on and walk away. Let the alarm go off, most will cycle through and it will shut itself off. Then go back and use your fob to set and unset the alarm before touching the car.
     
  16. TrojanFan

    TrojanFan F1 Veteran
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    I may try that. It waw 10:00 at night when it was going off so i didnt want to piss off the neighbors. I may turn the battery master on this Saturday and see what happens.

    In any case its a relatively new battery, had driven 150 miles so it should have been fully charged and it had been on a tender prior to the drive.

    I dont recall setting the alarm and i have jacked the car up many times without any issue.
     
  17. taz355

    taz355 F1 Veteran
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    Good point brian thats likely what happened to me, and thats why it has not done it again
     

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