Today I had the opportunity to test a SD card version for touchpad (C-Class, V-Class) in a car without touchpad (B-Class). The system did not work with the wrong card.
A message like "no card recognized" was displayed.
So there are definitely two versions of the Garmin Map Pilot that can be used only either in a car with touchpad, or in a car without touchpad. Mixing up the two versions is unfortunately not possible.