Randy Castro

Ok so my 96 had a bad heater control where it would light up but not show me fan speed or temperature. I went to the you pull it yesterday and picked one up from a 97 a4 Quattro. Now I get all visuals and lights except when I was installing it I saw the rear fog light switch flickering, it stopped so I just tested everything. I started the car and rpm was really low, battery light was flickering and all. And when I tried to get codes from the climate control it just kept repeating numbers (see video below). Anyway after I changed the unit out, there is a crazy lack of power unless I step on the pedal all the way down and only pulling out or after I shift, after a moment or two the power picks back up and like I said until I shift everything is good. Do I have to sync the unit with my car? If so how? Or does the fact that it's a Quattro unit and not a base unit have anything to do with the car acting all weird?

4Driver4

IIRC 1996 and 1997 might be different units. Do the part numbers match?

Randy Castro

Can't really tell, there aren't any stickers or anything imprinted on the 96(bad one) unit casing. The only difference is size and color, meaning the 96 doesn't go in to the dash as far back as the 97 and the 97 is white not black.

Prospeeder

Yea I think thats your issue. You can only use a climate unit from a 96. here is a repair service, I just looked, its actually module master out of Idaho, they do fantastic work!

93 94 95 96 97 98 99 Audi A4 A6 Quattro A8 90 S6 Climate Control Rebuild Repair | eBay