Boxster cruise control stuck after PCM replacement
 

Hello everyone. I have a 2000 986 that had the typical issue of water getting into the immobiliser unit. I ordered a replacement immobiliser, ignition, engine module, etc. from Ebay as a set. I replaced all parts and the car works perfectly, EXCEPT the cruise control. The light is on permanently, regardless of whether the switch is on or off. The cruise control will not engage either. Does this sound like an engine control unit issue?

Thanks!!

I would disconnect battery and reseat all immobilizer connectors. Maybe clean contacts and look for bent or pushed back pins while you have it apart.

Even though it may been working fine before, I would also check the cruise control switches down on your brake and clutch pedals.

WAG, I wonder if the car that the new set came from had cruise control. Maybe cruise control needs to activated via PWIS/Durametric?