no need to meddle with this thing la guys.
When you hit the start switch to crank the engine up, the DME will send a signal to momentarily not start up the compressor if it's on, its just the blower. Some DME version i think got this programmed to not on it during startup, no need to mess with it, if yours is on , just leave it. BMW designed the luxury car to be easy going, start stop and no need to meddle with the buttons la. Even my E36 also i never bother to off it, doesn't hurt anything. U think our car is proton meh?