Driving along the iDrive screen will suddenly go blank, losing phone, sat nav etc. A little message appears in the driver console behind steering wheel saying something along the lines of 'service temporarily lost' but as I'm driving couldn't take a picture. It kicks back to life after about 2 mins but losing sat nav and phone call, so not great. Its happened to me 3 times in 5 days since getting my IX 40 last week. I have called BMW assistance from the iDrive and they suggested an OTA software update. I've done that, but only yesterday and not driven may miles since, so not sure its fixed it yet. Interested to hear back from anybody else if its happened to them.