Porsche Cayenne 4 Wheel Drive System Faulty

Played with 4w settings of.
Porsche cayenne 4 wheel drive system faulty. So after doing some research i replaced the battery as was suggested along with the transfer case motor. Hi all i have 2006 cayenne s and every now and then since like a month ago i get the flash up on dash with four wheel drive system faulty then goes off for a few days and comes back on. Another problem with my porsche. The shifter does work and the trans can be put in low and high range and goes perfectly well but its a nuisa.
Psm failure chassis failure all wheel drive system start stop mode deactivated. I want to post information on how i got rid of my four wheel drive system fault on my 2006 porsche cayenne s. All wheel drive system start stop mode deactivated update. I have been having issues with this display coming up from time to time.
Porsche cayenne 2008 model showing four wheel drive system faulty obviously its having transfer case faulty further check with piwis 2 encounter activation of servo motor having open circuit issue this lead inform us servo motor has down. Get your porsche owners manual service manual guide manual and repair manual. Reached safely dubai and then restarted car message didnt appear. Restarted car twice but still messaged reappeared with 5 km.
After select to on road drive instrument cluster comes out 4wd system fault.