This is the digital version of climate control for 02-06 G Wagon 500 & 55, CL, CLK and C models. Even if yours didn’t come with digital and has the 4 knobs, this is a plug-in play option straight from Mercedes. There are two versions for these years, one says AC OFF REST and the other one says EC REST, they’re not interchangeable, my upgrade has to match yours. I have both versions listed on here This one is the AC OFF REST version
