B5 A4 klimatronic in a B4?

[SCarGo02]

Hello from across the pond!

I've been trying to find out if the B5 A4 kilimatronic unit is swappable into a B4 (in my case a 1994 90 CS). The older B4/C4 klimatronic units seem to be harder to come by and usually demand a higher price, whereas the B5 A4 units are plentiful and can be had for very little.

(I'm not asking about swapping the whole system, just if the B5 unit can be used in place of the B4).

I can't seem to find anyone here in the US who's tried so I figured I'd ask here. Worst case scenario is that I'm out $40...

[SCarGo02]

Well I've done some deeper digging and it appears that it does fit and does plug in although no one can confirm if the A/C works and/or if it controls the lower flap properly although main vent flap and defrost flap work properly.

The repair manual talks about having to code the head unit properly for the car it's installed in, so perhaps if the correct code is entered it would function properly...at this point I might just spend the $35-$40 and buy one to find out.

Apparantly if it does work it looks much better (more crisp) due to the LED lighting vs. the bulb lighting in the B4/C4 units.

[john881000]

hi
\did it work??
idf so what part number was it and code yoiu used


cheers
john

[Acidburn]

Any pictures of the two units? old an new.

[ShadowofBob]

I may be able to test this soon, although it would be in my B4 climate system that has been retrofitted to my Coupe. Have a friend with an Audi A4that is stripping it for weight so I might get his control unit. I'd prefer to test the new system with a B4 one though