215robert

Hello all, just swapped out my my hvac controls for a brand new unit from Porsche due to sticky buttons and now I have a psm failure light on. any help would be appreciated. I did dc the battery and turned everything off before I began.........thanks in advance.

Airbag997

Check the fuses

911PCarFun

anytime you disconnect the battery the psm will reset and throw the code. drive and it will cycle itself away

215robert

thanks ill try that now fuses all good....

215robert

drove itself away!!!! thanks>>>>>