[Xtra1]

There are so many reports of this problem on all BMWs and as dealerships are quoting mad money to fix it (I was quoted £800 to sort the problem) that there is now a a BMW specialist here in UK who are offering a fix it for a quarter of the cost.
I am sure I am like the majority of the owners/posters with this problem in that the problem starts with the SOS warning activating intermittently initially(I had periods when it stayed off for a week then came back again).
90% of the time the problem is down to the battery in the Telematics unit which seems to fail around 3-5 years from new. The genuine battery is around £50-60 here in uk, already expensive for a tiny battery the size of a matchbox but the majority of the costs are labour as in a lot of cases (definitely in an X1) the whole headliner needs removing as the Telematic unit is located under sharks fin aerial in roof!!!
This is one of a number of problems I have experienced and the car is becoming a money pit so I reckon it will be gone pretty soon!
Please contact me if you are in uk and need details of BMW specialist who is doing the cheap fix.