Originally Posted by eaglesrest

I'm surprised you haven't had an ETA issue with this setup. I have a 2004 X5 with Comms Pack (MKIV and 01/2004 BM54) and had big issues with the ETA which required a recode.

The ETA issue is not obvious until you try a longer route but you can tell if you have the problem by going into the Set menu, and holidng the menu key for 8 - 10 seconds. In the telematics data if you don't have X5 listed as the car type then your system has gone into OEM mode (some call it Euro mode but it isn't an accurate description) and your car needs recoding. This seems to always occur after a downgrade of NAV OS firmware e.g. V26 --> T26.09A or V25 or earlier.