Originally Posted by ard

There are a TON of posts around E18F.... seems to be a data fault in the MOST communications buss which sends data from the nav unit to the display in the dash. PRECISELY the kind of thing that correlates with ‘the display flashing and resetting’.

The MOST buss is a fiber optic. Read up on newtis.info on routing,and where the ends are located. Inspect.

In my brief google search, there are a handful of threads to look at. Oh...DO NOT think it needs to be an X5, same year, same same. Just a BMW.

GL