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Thread: How do you turn on AC on an E12?

  1. #1
    Join Date
    Oct 2019
    Location
    NJ
    Posts
    3
    My Cars
    1978 530i & 1985 325e

    How do you turn on AC on an E12?

    See post #2
    Last edited by MauiM3Mania; 10-21-2019 at 01:52 PM.

  2. #2
    Join Date
    Oct 2019
    Location
    NJ
    Posts
    3
    My Cars
    1978 530i & 1985 325e
    Hi everyone!

    I'm a new owner of a 1978 530i E12.
    It has about 80k miles on the clock and so far it runs fine.

    The AC on it was already retrofitted when I bought it and recently I hooked up my gauges to the low and high pressure ports and it's empty.
    I want to fill it up with some refrigerant but the problem is that I cannot see the AC or snowflake button near the climate control like I have in my E30 or my other cars anywhere on the climate control.
    Here's what my climate control looks like:
    https://drive.google.com/file/d/0Bzy...ew?usp=sharing


    Is it just as simple as turning the very left knob to cold?
    I know it's a pretty stupid question but neither do I have the owner's manual nor I have found any info about this on the internet.

  3. #3
    Join Date
    Jul 2011
    Location
    Western Pennsylvania
    Posts
    48
    My Cars
    335i 328i, 535xit, ++
    What year? I had a '76 530i and it was one knob to cold, the other knob to high and one round button that turned on the compressor. They changed it in 1977 and as I recall, there was no more button, if you moved the dial toward the cold side, the compressor would kick in.
    Current BMWs: 14 total. '12 X5, '09 E93 335i, '09 E91 328i, '08 E93 328i, '08 E61 535ix '02 E39 M5, '01 E39 M5, '02 E39 touring, '91 E34 M5, (2)'88 E28 M5s, '75 2002, 74 2002,
    Prior BMWs: Every E-body 5 series including tourings and every E-body 3 series. '74 2002 tii
    First rule of BMW Ownership: Buy a BMW specific scanner!

  4. #4
    Join Date
    Jun 2007
    Location
    Mercer Island, WA
    Posts
    2,062
    My Cars
    88 325iC,'11ML350,'84RX7
    My son has a 1977 630csi (E12 based). Simply turn the temperature knob all the way to full cold, and the compressor kicks in. I doubt that changed in 1978.

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