PORSCHE: VEHICLES WITH REAR END ELECTRONICS AND FRONT END ELECTRONICS CONTROL UNITS HAVE ISSUES WITH KEY NOT ABLE TO BE INSERTED IN THE IGNITION SWITCH AND A POSSIBILITY OF NOT SWITCH TO ENERGY SAVING MODE WITH REAR END ELECTRONICS DUE TO SOFTWARE ERROR AND MUST BE REPROGRAMMED WITH UPDATED DATA RECORD. MODELS 2011-2012 CAYENNE, CAYENNE DIESEL, CAYENNE S HYBRID, CAYENNE S, CAYENNE TURBO. *PE