The main control computer went crazy on my 1999 740il. Began by displaying trans prob, then shut off the speedometer and tach. Displayed brake (lining) and abs lights. Also shut down the a/c compressor (but not the fan). I disconnected the battery for about 30 min and reconnected. Same problems occurred. Took car to independent mechanic and his recommended transmission service company. The transmission company decided the transmission is fine. Looks more like something strange going on with the computer. loose wires? Bad chips? Only recent maintenance was to replace all brake pads. Does anyone have any ideas on this one?