Battery off switch question | FerrariChat

Battery off switch question

Discussion in '348/355' started by buddyg, Mar 11, 2017.

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  1. buddyg

    buddyg F1 Veteran
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    I have read if you disconnect the battery, once you hook it back up you have to run the car at idle for 10-15 minutes to reset all the parameters. Would this be the same if you used the battery shut off switch?
     
  2. Dave rocks

    Dave rocks F1 World Champ
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    Yes.
     
  3. Arturin

    Arturin Karting

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    You have to run it with all accessories off ( radio, hvac...) at idle until both fans kick in.
     
  4. taz355

    taz355 F1 Veteran
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  5. buddyg

    buddyg F1 Veteran
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    So the last time I drove it I didn't do that just switched the battery to on and drove it would that have caused the check engine light or codes it threw?
     
  6. johnk...

    johnk... F1 World Champ
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    It could.
     
  7. Rob'Z

    Rob'Z Formula 3

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    I always switch my battery off when I park it. I bought my car in July 2010 and I have never even seen the battery. Who knows how old it is and it still fires right up every time.

    It runs strong and only throws a P1448 which is expected in my case.


    Just posting my experience/observations.
     
  8. Andy 355

    Andy 355 Formula Junior

    Jun 2, 2013
    434
    Sydney
    Rob z, from what appears to to be the case, ricambi now offer a device that appears to cure p1448. It was developed by a f.chatter. very clever in design and kudos to those responsible!!
     
  9. Skippr1999

    Skippr1999 F1 Rookie
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    +1 it works.
     
  10. Steve355F1

    Steve355F1 F1 World Champ
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    What?! Where does this come from?

    I always turn the battery switch off if I go away or don't plan on using the car for a few weeks.

    I've always turned it back on, started up, reset the clock (why, I don't know. Lol), re-tuned the radio stations and driven off as normal. By the time I've done that it's been about the "usual" time I'd let the car warm up anyway, and is nowhere near 10-15 minutes.
    Maybe 3-5, but who's counting?

    No Ferrari mechanic I've ever spoken to has ever said this "10-15 minute re-set" is necessary.
     
  11. Dave rocks

    Dave rocks F1 World Champ
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    #11 Dave rocks, Mar 12, 2017
    Last edited by a moderator: Sep 7, 2017
    It's in the WSM :)
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  12. Steve355F1

    Steve355F1 F1 World Champ
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    Fair enough. Surprisingly few Ferrari trained mechanics seem to think it really matters.
    I'll continue to ignore it and place it in the "trying to increase the Ferrari mystique" file.

    Not sure what it's going to learn from sitting in the garage for 15 minutes that a jolly good thrashing down a nice road won't teach it...
    That's where Ferraris really learn their parameters.

    :)
     
  13. Dave rocks

    Dave rocks F1 World Champ
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    Steve - this is not a wives tail, it's a typical situation. This was not written for no reason...
     
  14. Steve355F1

    Steve355F1 F1 World Champ
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    #14 Steve355F1, Mar 12, 2017
    Last edited by a moderator: Sep 7, 2017
    Dave - if it is really that important why is there no mention of it in the owner's manual?
    The only thing the owner's manual says about disconnecting the battery is to make sure the battery is re-charged.
    Surely, of all people, it is the owner who should be made aware of this supposedly important procedure?

    And, more importantly, why has no Ferrari trained mechanic ever mentioned it to me?

    In my view once the engine is up to temp it's not a good idea to have it sitting there any longer than necessary.
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  15. johnk...

    johnk... F1 World Champ
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    It's in the owners manual.

    Perhaps no mechanic ever told you about it because being unaware of the need, you never asked?
     
  16. Dave rocks

    Dave rocks F1 World Champ
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    Steve, you asked where it came from and I told you. Now instead of accepting the knowledge, you are choosing to argue about it. I don't know your mechanics so I can't answer why they did not make you aware other than to support what John just posted.

    If you don't want the information, that fine but debating the validity is rather foolish, with all due respect.

    Awaiting Brian Cralls reply :)
     
  17. Steve355F1

    Steve355F1 F1 World Champ
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    Can you be more precise? Where in the owner's manual is it?

    I have every document / manual that came with the car yet I can't seem to find it.
     
  18. Steve355F1

    Steve355F1 F1 World Champ
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    With respect, Dave, I ask the question because I've never seen nor heard anything about this before.

    I've also owned my car for near on six years, have routinely turned off the battery switch and never experienced any of the supposed symptoms when I turn it back on and drive the car.
    My car is now 19 years old and I've driven it more than any previous owner.

    A cut and paste of a WSM proves nothing.
    After all, mine also says you should do an engine out every three years...
     
  19. Dave rocks

    Dave rocks F1 World Champ
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    It's not in the 98 F1 manual - I just looked.

    It is however in the the 95 manual.

    Do a google search - it's a common practice among most makes and models....
     
  20. Steve355F1

    Steve355F1 F1 World Champ
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    Thank you.

    Perhaps we can place this in the "differences between the '95 and the rest" file, then.

    Maybe with the upgrade to OBDII it was no longer necessary.
     
  21. Dave rocks

    Dave rocks F1 World Champ
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    Perhaps it's a difference between 2.7 and 5.2 - I don't know - again, awaiting Brian's reply.

    I just briefly scanned the 360 WSM and I see no mention of it either.

    Given I own both 2.7 and 5.2, I always follow this procedure and sometimes by default as I allow my car to warm up (at idle) anyway.

    Flame suit on :)
     
  22. buddyg

    buddyg F1 Veteran
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    #22 buddyg, Mar 12, 2017
    Last edited by a moderator: Sep 7, 2017
    Page L7
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  23. Wade

    Wade Three Time F1 World Champ
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    Older ECUs don't learn "on the fly" as well as the newer ones. So a proper reset and learn procedure is helpful for optimum performance.
     
  24. Steve355F1

    Steve355F1 F1 World Champ
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    Thanks, but all you've done is confirm that there may be a difference.

    My Euro '98 355F1 page L7 is exactly as I previously posted.

    Perhaps yours is an '95 or maybe there's something different about the US cars?
     
  25. Steve355F1

    Steve355F1 F1 World Champ
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    Ok. I think we have established that this is likely another difference between 2.7 and 5.2

    Strangely this one seems to be in favour of 5.2 (can you believe it?)
     

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