Passanger vents blow warm air | FerrariChat

Passanger vents blow warm air

Discussion in 'California/Portofino/Roma' started by nflpats, Oct 16, 2017.

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  1. nflpats

    nflpats Karting

    Oct 7, 2017
    54
    Full Name:
    Tobin Tracy
    #1 nflpats, Oct 16, 2017
    Last edited: Oct 16, 2017
    My AC only blows cold through the drivers vents and warm through the passenger vents. Not sure if this is a blend door actuator problem or just needs to be reset (read that somewhere)
     
  2. good2go

    good2go Formula Junior

    Feb 9, 2016
    939
    #2 good2go, Oct 17, 2017
    can you post your control settings.
     
  3. nflpats

    nflpats Karting

    Oct 7, 2017
    54
    Full Name:
    Tobin Tracy
    #3 nflpats, Oct 17, 2017
    I had the controls set at the lowest on both sides with the AC button engaged. I also tried the mono button but same results. I tried all vent settings and same warm air on passenger side.
     
  4. doccharlie954

    doccharlie954 Formula Junior

    Jul 27, 2010
    256
    #4 doccharlie954, Oct 18, 2017
    Had the same problem on my 12 CALI. It would blow hot in middle, then next time blow only under dash, then on passenger side. Dealer replaced module, STILL no luck. Ferrari advised to check grounds, STILL no luck. Only thing that worked was to turn car off for 3 minutes, open doors and let it reset itself. Sometimes it worked sometimes not. Dealer advised that CALI and 458 had this problem. Do I believe it? No, as my 16 CALI does not have this problem. Good luck as I know this is a royal pain in the arse!!
     
  5. Jaguar36

    Jaguar36 Formula Junior

    Nov 8, 2010
    839
    Cherry Hill, NJ
    #5 Jaguar36, Oct 18, 2017
    Dunno if it would be a similar issue, but I had this problem on my BMW and it turned out to be a leak in heat exchanger. As it lost coolant only half of the heat exchanger would get cold and that was the side that fed the drivers side. replacing the heat exchanger and refilling the system fixed it.
     
  6. nflpats

    nflpats Karting

    Oct 7, 2017
    54
    Full Name:
    Tobin Tracy
    #6 nflpats, Oct 18, 2017
    I'll try the 3 minute trick. The heat works, just the AC is problematic
     
  7. mobinakhtar

    mobinakhtar Karting

    Jan 28, 2015
    172
    #7 mobinakhtar, Oct 18, 2017
    May be worthwhile to check the Freon levels - In Mercedes, with personal experience, I can tell you that one side blowing warmer indicates low Freon. You can google it and you will see what I am talking about. My analogy is that Cali has Chrysler Audio - Chrysler shared technology with Daimler - it is therefore possible that HVAC gets this "feature" from Daimler-Mercedes setup.

    My other guess would be damper doors that are used to mix air - but usually they would not affect an entire side.
     
  8. nflpats

    nflpats Karting

    Oct 7, 2017
    54
    Full Name:
    Tobin Tracy
    #8 nflpats, Oct 18, 2017
    I thought about that as well. I scheduled an appointment already to have freon level checked. Hopefully that will solve the issue
     
  9. OwenC

    OwenC Karting

    Aug 12, 2017
    62
    #9 OwenC, Oct 19, 2017
    My local Ferrari service guy pointed to me a 458 in their garage had the same issue you are experiencing. And he mentioned that problem causing it was a defective electronic module and they are just waiting for the part to come in.

    Hope you can get the issue fixed soon.
     
  10. mobinakhtar

    mobinakhtar Karting

    Jan 28, 2015
    172
    #10 mobinakhtar, Oct 20, 2017
    Its funny - When my 97 e420 showed this symptom (in early 2001), the dealer wanted to replace the blend module as well. An indy that I used to frequent told me about the Freon being low - and blowing warm on one side and cold on the other - and boy was he right!

    http://www.benzworld.org/forums/w210-e-class/1582318-ac-blowing-warm-air-left-side.html

    read the second post.

    Disclaimer though - I know this to be true in Mercedes. But Ferrari........who knows.
     

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