Audi S4 2001
For the last few months fuse #5 blows after a few seconds of acceleration. if fuse is changed and left in park, the climate control unit starts working again, however when you start driving it stops working and the fuse blows.

I have tried a different climate control unit and it does the same thing. Also tried putting out the unit complete and with a new fuse it blows the fuse when you drive.

I was hoping someone could point me in the right direction or had a similar experience and what they did to solve it.

Thank you in advance.