Originally Posted by tom @ eas
e9x M3 models do not have a powered OBD port.
I have not seen the installation instructions for the PSWII yet, does it specify switched or keep-alive memory? There are only a few locations that provide constant power in this model and will not shut off when the command is given by the IBS.
Correct me if I'm wrong but I thought all cars had a powered OBD port? Pin 16 is always hot, which means power at all times.