XC70: Can the rear flap motor be switched off?

I sold my V70 II AWD and bought me an XC70 year 2010. Both D5. Better start, better damped chassis, a bit better (or less bad9 impact, otherwise a few progresses. Unfortunately, 0.5 liters more diesel with the same driving style despite a slightly more modern engine. (new 8.7l real consumption mixed driving mode, partly >170km/h). I could already get rid of some little nervousness from the new one (auto mirror flaps etc.). Something I don’t pack: the rear flap motor whirls around, even if I don’t need it. When I close the rear door that works: If I do it right (close it all and snap it), the engine remains quite quiet. But when opening it doesn’t work: always surrise. I’m doing something wrong? Is there a way to open the door without the best engine? Or can I also shut the engine completely? Is there an extra fuse that would be removable? I don’t use that at all. If I don’t do anything wrong, then let me do something wrong, then let me open the door without the devil, because I need to move again.