2005 E90 320d heater/climate problems, no fan

Notices
 

Thread: 2005 E90 320d heater/climate problems, no fan

Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. 2005 E90 320d heater/climate problems, no fan 
    #1
    Bimmer Fan
    Car Details
    greg123's Car Details
    Model of Car:
    Octavia 1.8T Auto+Leather
    Year of Manufacture:
    2002
    Transmission Type:
    Auto
    Car Body Type:
    Estate

    Join Date
    Jul 2009
    Location
    J26 M1, Nottingham
    Posts
    10
    Thanks
    0
    Thanked 3 Times in 3 Posts
    Hi guys,

    If anyone has any experience....

    The heater fan doesn't work and it's not the controller/resistor pack/Output Final Stage (new one fitted B64.11.9.146.765) and not the fan (works fine with 12v applied) and not the wiring to the climate head unit. The power and earths to the fan controller also check out fine.
    The fault code from the scanner is 9C97 Front Stratification Adjuster. I presume this is either a fault with the stratification control know by the hazard light or an actuator to a control flap.
    When I operate the footwell/screen/face vent buttons, only one actuator moves, the one at the bottom on the drivers side (take out the foot shield and look up). I can’t seem to make either of the other 2 actuators on that side move no matter what I do, however I can hear a noise when I turn the left/right temp knobs up or down. Also the flap for fresh air inlet works okay. No noise when I change the temp on the front centre vents, by the hazard switch. I have been wondering if the motor that always moves is faulty and is acting on commands it shouldn’t be, or all the actuators are not programmed to the controller properly.
    Also do the actuators need to be programmed or coded after a new one is fitted - does this have to be done and will it need to go to BMW? I have access to generic diagnostic gear which talks to the Climate module but that’s all, I read talk of a procedure to ‘address’ the actuator motors:

    “After the exchange of a flap motor, the flap motor must be re-addressed. The new
    address will be triggered by the diagnosis software via: Service Functions => Body => Heating and Air Conditioning => re-address motors”

    If anyone can shed any light, appreciated.

    Greg.
     
     

  2. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  3.  
    #2
    Bimmer Fan
    Car Details
    greg123's Car Details
    Model of Car:
    Octavia 1.8T Auto+Leather
    Year of Manufacture:
    2002
    Transmission Type:
    Auto
    Car Body Type:
    Estate

    Join Date
    Jul 2009
    Location
    J26 M1, Nottingham
    Posts
    10
    Thanks
    0
    Thanked 3 Times in 3 Posts
    BMW say it's the head/control unit, £550.
     
     

  4.  
    #3
    BMW Guru
    Car Details
    Ronnie's Car Details
    Model of Car:
    See above
    Year of Manufacture:
    Never too old, never too new
    Transmission Type:
    Always manual
    Car Body Type:
    Usually 5 doors
    Ronnie's Avatar
    Join Date
    Dec 2007
    Location
    Bournemouth, Dorset.
    Posts
    20,394
    Thanks
    6,198
    Thanked 7,051 Times in 5,322 Posts
    Only thing I have on the E90 heating system is this PDF here,

    http://www.bimmerforums.co.uk/forum/...1&d=1249170885
    Attached Files
     
     

  5. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  6.  
    #4
    Bimmer Fan
    Car Details
    greg123's Car Details
    Model of Car:
    Octavia 1.8T Auto+Leather
    Year of Manufacture:
    2002
    Transmission Type:
    Auto
    Car Body Type:
    Estate

    Join Date
    Jul 2009
    Location
    J26 M1, Nottingham
    Posts
    10
    Thanks
    0
    Thanked 3 Times in 3 Posts
    Thanks - helpful. I'm currently talking to ECU engineers who do dashes and the like to see if I can find someone that repairs them. Not sure if will have to code in then, or if something like Carsoft Home will do it.

    Cheers, Greg.
     
     

  7.  
    #5
    BMW Fanatic
    Car Details
    pazza's Car Details
    Model of Car:
    120d Sport
    Year of Manufacture:
    2005
    Transmission Type:
    Manual
    Car Body Type:
    Hatchback

    Join Date
    Apr 2010
    Location
    Liverpool
    Posts
    37
    Thanks
    13
    Thanked 1 Time in 1 Post
    Hi Greg,

    Did you manage to sort this out? I'm having similar problems with my 1 series, and as it's the same IHKA system I thought your problem might shed some light on mine!

    Chers,

    Paul
     
     

  8.  
    #6
    Bimmer Fan
    Car Details
    greg123's Car Details
    Model of Car:
    Octavia 1.8T Auto+Leather
    Year of Manufacture:
    2002
    Transmission Type:
    Auto
    Car Body Type:
    Estate

    Join Date
    Jul 2009
    Location
    J26 M1, Nottingham
    Posts
    10
    Thanks
    0
    Thanked 3 Times in 3 Posts
    Hi Paul,

    Yes I sent the climate head unit off to BBA Reman who confirmed it was faulty but wanted a huge amount of money to fix it and send it back totally dead. The partial functionality and the fault code were red herrings, it was the head unit/control/ecu (all in one) quite easy to pop out the dash.

    BMW told me it was coded, it was NOT.

    We pulled one out of a rough 1 series that was going to auction, swapped it with this 3 series one and bingo - full climate working perfectly no coding or computer needed.

    HTH,

    Greg.
     
     

  9. The Following User Says Thank You to greg123 For This Useful Post:

    pazza (08-08-2010)

  10.  
    #7
    BMW Fanatic
    Car Details
    pazza's Car Details
    Model of Car:
    120d Sport
    Year of Manufacture:
    2005
    Transmission Type:
    Manual
    Car Body Type:
    Hatchback

    Join Date
    Apr 2010
    Location
    Liverpool
    Posts
    37
    Thanks
    13
    Thanked 1 Time in 1 Post
    Hi Greg,

    Thanks for getting back to me. Is it just the IHKA unit (i.e the panel with switches and display) that you replaced?

    There's a few cheap on ebay...

    Did BMW charge you for diagnosing it was the head unit? And how much did BBA Reman want?

    So expensive owning a BMW!!! I might start leasing in future :-)

    Cheers,

    Paul
     
     

  11.  
    #8
    Bimmer Fan
    Car Details
    greg123's Car Details
    Model of Car:
    Octavia 1.8T Auto+Leather
    Year of Manufacture:
    2002
    Transmission Type:
    Auto
    Car Body Type:
    Estate

    Join Date
    Jul 2009
    Location
    J26 M1, Nottingham
    Posts
    10
    Thanks
    0
    Thanked 3 Times in 3 Posts
    Hi again,

    Yes it was just the IHKA, it is the control unit as well as the display as per VW Audi group only theirs don't go wrong (I'm an intendant VAG tech).

    Yes it's about £114/hr as I am trade they did it £45/hr and correctly said the unit was faulty, but the suit I spoke to was not a tech and incorrectly said they are coded. The one I was dealing with was not.

    Greg.
     
     

  12. The Following User Says Thank You to greg123 For This Useful Post:

    pazza (08-08-2010)

  13.  
    #9
    BMW Fanatic
    Car Details
    pazza's Car Details
    Model of Car:
    120d Sport
    Year of Manufacture:
    2005
    Transmission Type:
    Manual
    Car Body Type:
    Hatchback

    Join Date
    Apr 2010
    Location
    Liverpool
    Posts
    37
    Thanks
    13
    Thanked 1 Time in 1 Post
    Ahhh,

    Thanks mate. There's a fair few head units on ebay, ranging from £45 up to £125. For the cost of a lower priced one, might be worth a gamble rather than paying BMW a fortune to diagnose!

    Since I know it isn't the final stage resistor, and not likely to be the fan motor (will check for sure tomorrow as nyou did yourself with a 12v feed), then I am narrowing the possibilities down to the head unit,

    Just like yours, I can hear the actuators going etc when I operate the various settings on the head unit.

    I'll let you know how I get on.

    Thanks again mate.

    Paul
     
     

  14.  
    #10
    BMW Fanatic
    Car Details
    pazza's Car Details
    Model of Car:
    120d Sport
    Year of Manufacture:
    2005
    Transmission Type:
    Manual
    Car Body Type:
    Hatchback

    Join Date
    Apr 2010
    Location
    Liverpool
    Posts
    37
    Thanks
    13
    Thanked 1 Time in 1 Post
    Hi,

    I changed the IHKA head control unit, and still o blowers.... The new head unit was exactly the same as the old one, in that I had all the same actuators going when I controlled the various temperatre/blower speed/fan settings etc.

    Has anyone go any clues where to look next, bearing in mind its not the final stage resistor, the relays or any of the fuses (and now know not the climate head unit).

    I did get a fault code a while back (41F1 "Electro Ventilator - Short Circuit to B-" Does anyone know what this means?

    Cheers,

    Paul
     
     

Page 1 of 2 12 LastLast
Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts