My C300 sport came with a lot of option except no passenger memory. The thing that bugs me is when some of my taller friends have to adjust the passenger seat way back and recline it. So every time I have to readjust it back and it's a PITA. Driver side is no problem as I have memory seating on it. The lux models have passenger memory option but my understanding is U.S. sport version this was not an option in 2010.

So is there a way to add just a memory function. I would atleast have to add the memory buttons on the side panel but I wonder if I can just run the cable direct to the seat module on the bottom. Or do I have to swap anything else? Any ideas?