hello- new to this forum,so be gentle. i have a 530/d m sport which has been and still is superb. i have 2 questions.1) i am being told on the i-drive screen to load the nav.disc when it is loaded.this has corrected itself a couple of times,but on restarting the engine the following day it is back to the same fault and i am unable to use the nav.part of the i-drive.everything else is ok. 2)is it possible to replace the passenger side occupancy detector on the f/nearside seat? the restraint warning lights up often,and it appears that is the fault here. hope to hear from you lads.