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Thread: Upgrading the General Module

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  1. #1
    Join Date
    Oct 2004
    Posts
    3,395

    Default Upgrading the General Module

    Here's a quick bit on upgrading your car's General Module.

    All E32/E34 use a centralized General Module to control most interior functions.

    Later E32/E34 cars, anything built after 9/91, have an updated module that tweaks some interior features and adds one touch down functionality for all windows. You can add these features to your early car by swapping your existing module with one from a later car.

    All US E32/E34 general modules are physically interchangeable, though there are some compatibility issues with certain cars/modules. You will run into lock functionality problems if you install a late E34 GM into an early E34 car (or a late E34 GM into an early E32, has to be from a late E32). The locking system has to match that of the donor car.

    The installation process is simple. First disconnect the battery and remove the back seat lower cushion (pull UP, hard, at the front edge).

    The rear power distribution box lives under the rear seat:



    Remove the plastic cover over the General Module and Relay Module, which is secured by three phillips screws, one is hard to see:



    With the cover removed, the GM is located on the left. Be sure your battery is disconnected before you remove it. It pulls up and out.



    Fit the replacement module and reassemble the car, reconnect the battery and enjoy!
    Last edited by Kalevera; 07-05-2010 at 06:05 PM.

  2. #2
    Join Date
    Dec 2006
    Location
    SF Bay Area, CA
    Posts
    12

    Default

    Nice,
    Thanks,
    RussC

  3. #3
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,091

    Default the new GM

    Repeat and time interlock for headwashers, time interlock 3 min.
    -headlight washing pump at fifth windshield washing after time interlock
    -intensiv washing pump operating at reduced time from 3 to 2 seconds
    -minimum interval for wipers reduced to 2 from 3 seconds (programmmable)
    -increased wiper contact pressure during windshield washing now also provided

    -previously the GM would react opposing signals (e.g. an unlock signal while trying to lock, as with a defective microswitch) by carrying out the first command (e.g. locking, followed immediately by unlocking). Repeating the first command then results in carrying out the command, e.g. try to lock again, and locking is now carried out. This function (Asynchronious Position) is omitted in the NEW GM.
    -After unlocking is performed due to crash sensor activiation, the locking command is now reactivated by double-locking with the key from either side (driver or passenger door).
    -The one-touch operation of windows has been expanded to all 4 windows in OPENING direction. Drivers side has one touch in both directions
    -Sunroof is not already in the tilt position.
    -switch off delay of the interior lights after entering the vehicle and closing the driver's door reduced from 20 to 15 seconds.

    part no. of the new GM from 09/91 is 6135 8 356 095

    some more new ones

    1) 61 35 8 356 552 ended 05/93

    2) 61 35 8 368 158 ended 05/93

    3) 61 35 8 350 345

    4) 61 35 8 360 105

  4. #4
    Join Date
    Jan 2005
    Location
    Kelowna, B.C., Canada
    Posts
    143

    Default

    Very cool Whit, thanks.
    Shogun, what does sunroof is not already in the tilt position mean?

    Shane

  5. #5
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,091

    Default

    I once copied that from the Technical Info (TIS). No idea what is actually means. I have no sunroof
    Maybe someone knows.

  6. #6
    Join Date
    Oct 2004
    Posts
    3,395

    Default

    Erich, I looked that up and it is in reference to canceling the one touch down feature -- pressing any of the window switches or the sunroof switch/tilt position will stop a one touch down in progress

  7. #7
    Join Date
    May 2004
    Location
    Japan
    Posts
    9,091

    Default

    more pics of the rear fuse box
    Name:  ebox_backseat.jpg
Views: 639
Size:  67.1 KB
    http://bmwe32.masscom.net/johan/remo...x_backseat.jpg

    The "What's that? / Where's that?" Picture FAQ page
    "what's that?" E32 pictures

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