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Thread: New member with a big climate control problem

  1. #101
    Join Date
    Feb 2007
    Location
    Melbourne, Australia
    Posts
    2
    My Cars
    E36
    Quote Originally Posted by davecoleman View Post
    Ok, so I still have this problem, its probably another problem in the circuit board I guess, but I have no idea where it could be. Anyone know of a schematic diagram of this thing?
    First post, and I thought I would join in this one, as I just did this trick and saved me some serious grief and only an hour to do. I thought I was going to be up for some serious money to get a replacement, and considering it's just coming into summer here, and over 30 degrees tomorrow! Really be needing that AC soon.

    Anyways, davecoleman, I do have a schematic for "E36 (316i, 318i, 318is, 320i, 323i, 328i, M3, 318tds, 325td, 325tds incl. Convertible & Touring)" it doesn't cover the compact though. It's a 6meg PDF electrical troubleshooting manual from BMW. If you want a copy let me know.

    Cheers!!

  2. #102
    Join Date
    Apr 2004
    Location
    Milwaukee
    Posts
    77
    My Cars
    '96 328i

  3. #103
    Join Date
    Oct 2009
    Location
    wappingers falls, new york, usa
    Posts
    6
    My Cars
    1999 bmw 328ic
    hello i found a website that addresses this issue very well. he give credit to bimmerforum but added step by step pics. i will be attempting this in the week or so to come but here is the link
    http://www.macadamizer.com/bmwfix.html

  4. #104
    Join Date
    Oct 2009
    Location
    dluth
    Posts
    1
    My Cars
    1998 328i
    had the same problem on my 98 328 yesterday. used robp074 trick but no butt. worked great. thanks

  5. #105
    Join Date
    Mar 2010
    Location
    minnesota
    Posts
    21
    My Cars
    323i convertible

    Same problem here, climate control goes on/off...

    Kevin in Minneapois, new owner of 98 323i convertible, 90k miles. Love it, but has same quirky problem as yours. Been reading up and seems it's the Capacitor, cheap item, needs replacing. This guy has it worked out:

    http://www.macadamizer.com/bmwfix.html

    Let me know if you have any luck! Cheers.

    kevin@dokdoc.com
    Last edited by kevinocall; 05-17-2010 at 03:33 PM. Reason: forgot my email

  6. #106
    Join Date
    Jul 2004
    Location
    Houston, TX
    Posts
    8,158
    My Cars
    MCoupe, 328is, Z3, TDI
    That was over 6 months ago....
    -Abel

    - E36 328is ~210-220whp: Lots of Mods. RomRaider self-tune work in progress.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg: Many Mods ~300ft/lbs tq, diesel, daily beater. Love/Hate relationship.
    - S52 Estoril M Coupe

  7. #107
    Join Date
    Feb 2008
    Location
    Lima, Peru
    Posts
    772
    My Cars
    2001 525i, ex 97 318is
    darn... today my CCU finally failed after 13 years of non stop service, I'll get it fixed tomorrow but I haven't found the 0.47uf 50v capacitor...I'm not sure if I should just resolder or keep looking for the capacitor because there are many different opinions about this
    2001 525i, Titanium Silver, 48K miles

  8. #108
    Join Date
    Apr 2009
    Location
    Minneapolis
    Posts
    21
    My Cars
    01 M5 03 540I M Spt,

    Capacitor replacement with Climate ????

    A few weeks ago I repaired a friend's intermittent climate control head using the excellent write-up I found at: http://www.macadamizer.com/bmwfix.html. I had ordered the capacitor and was ready to replace it. When I inspected the stock circuit board under high magnification it clearly showed a "cold" or bad solder joint. I cleaned off the protective coating from the bottom of the ckt board beneath the capacitor and then heated the joint with my soldering iron along with a bit of new solder. The unit has worked without failure for several weeks. Given some of the responses I have read its likely that this is a systemic problem created when these were subassemblies were produced. So, before you go to the trouble of replacing the cap, check the leads to make sure that a good shiny connection is found on the underside of the board.

  9. #109
    Join Date
    Apr 2009
    Location
    Nevada
    Posts
    389
    My Cars
    97 BMW 740iL
    Just wanted to say thanks for the write up:
    http://www.macadamizer.com/bmwfix.html

    Shortly after picking up my project M3 the CC started the off/on problem.

    I couldn't find a .47uF cap, but a 4.7uF worked fine and solved the problem

    Now to fix cam sensor, shift linkage bushings, LCABs, RTABs, brakes, etc, etc....
    Last edited by Bimmerman4ever; 04-07-2014 at 02:01 PM.

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