kn51

Tore it out to find the leak and well that was easy to spot. BTW, nice work MB for having bottom cushion and the seatback share a connector so you just can't set the bottom aside.

Problem is, a fix for this? I cannot locate any rear seat inflation parts diagrams for even a potential replacement.

Plutoe

look here for all the parts that could be leaking----Mercedes-Benz Electronic Spare Parts Catalogue Online