Like Bimmerdude I have tranny problems but want to make sure its not caused by a faulty signal from the engine. Have replaced the dash bulb but cannot get it to give the flashing codes by pressing the throttle five times in five seconds. Maybe I dont have the rhythm? Should the engine check light come on on turning the ignition on or is there any lead I can remove to simulate a fault and check the system? Thanks for any help you can give