BMW General Module 5 Removal Procedure for E85 Z4 Vehicles
#2 Philips screwdriver
8mm nut driver
Step 1. Disconnect the battery. The battery is located in the
trunk, under the false floor panel. Use the 10mm socket to disconnect the battery
negative terminal of the battery. See picture.
Step 2. Remove the two philips screws just below the glove box.
Step 3. Pull down the panel. The GM5 module will be mounted
to the panel. See picture.
Step 4. Use the 8mm nut driver to remove the left and loosen
the right hex head screws holding the module to the panel.
Step 5. Disconnect the 3 connectors. Start by disconnecting
the connector on the right. This connector has an outer sleeve that slides to
the right. You might need to insert a flat blade screwdriver just to the right
of the wires to get it started. See picture below left. The next two connectors
have a white latch lever that needs to be rotated 90 degrees. See picture below
Step 1. Preform steps 1 through 5 above in reverse order.
Now that you got the module out send it to someone who knows what they're doing. GM5 Repair Service
Notes: When the GM5 module is reinstalled after repair it is good to go. There is no need to go to the dealer for recoding or programming or anything like that. It should just work. When testing the door locks make sure that the driver's door is closed. I have gotten many calls where the customer says that the door locks don't lock now. I tell them to shut the driver's door and that solves the problem. The module will not let you lock the doors if the driver's door is open. The passenger doors can be open, but, not the driver's.