I have a 2003 E500 with heated leather seats. I had a power drain issue a while ago that was an issue with the passenger seat module so I disconnected it instead of getting a new one for $600. I have the opportunity to purchase and entire interior of the massaging heated/ventilated seats from a 2003 E55. I can get the front and rear seats, control panel for the dash board and the wiring (wasn't sure if they wiring was the same or not but the seller with give it to me also). Obviously the seats will bolt right in. I've read posts in the past from people saying that they replaced seat modules and had to have them reprogrammed by a Merc Computer STAR thing. Is this true? I would guess that the seat connections are the same on both with the exception of the ventilated portion? I did a full seat swap on my 1996 E300 and added factory heated leather seats to it when it only came with crappy MDtex seats and all I had to do was add a power source to the heated switch panel. I'm hoping this will be just as easy?

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Current fleet-
2015 BMW 750i xDrive
2009 BMW 535i xDrive
2004 Chevy Avalanche 4x4
1993 Mercedes 300SD
1993 Mercedes 300SE (parts car)

Previous Benz's-
2001 Mercedes SL500
1983 Mercedes 300SD
1980 Mercedes 300TD
1996 Mercedes E300D
1999 E300DT
1984 300TD-T
1988 Mercedes 560SEL (parts car)
1979 300SD
2003 E500
2004 S430 4Matic
2001 E55
2003 E430