Our 2055 x5 sport has lost its satnav and screen is blank after a flat battery, I have checked fuses and disconnected battery for 10 minutes now the radio but no satnav and just a blank screen ,

Hello. It seems your B.M.W.'s PCM (Powertrain Control Module), inadvertently, 'engaged' 4WD on it's own; without your knowledge. Disconnect your Beemer's battery and wait 10-15 minutes then reconnect it. Start engine and drive your Beemer somewhere. If it stays in 4WD, then, another 'reboot' has to be done. Good luck and keep me informed; if you want to.

not sure on X5 but on 5 series it meant -
U112B - No message from instrument cluster, could instrument cluster fuse. Could try disconnecting and reconnecting battery to see if that clears it. (Make sure you have radio code before disconnecting)

information updates causing a reboot of the system.. get it looked at..

Sounds like a memory issue.
Remove data cd/dvd.
Possibly pull fuses and reset the system

Most sat nav/radio issues are caused by a flat battery! The most simple solution to try is th switch the vehicle off, go to the fuse box on the right hand panel of the boot (as your facing boot) remove fuse 24 (5 amp) for 5 minutes then replace and start vehicle as normal! This will reset the nav/stereo system! Rich B

Remove RCM fuse from dash panel fuse box. Fuse F2.10 10 amps. Turn key onfor 30 seconds and see that Air Bag light is lit. Now disconnect battery negative cable for 1 minute, leave disconnected while service is done. now the air bag is disabled. To repower the system turn key on, insert fuse. connect battery, now turn key off for 10 seconds, then turn key on and watch the air bag light. it should go on then after the air bag module is happy that everything is ok, it will turn off.

I know this is an old thread, but my 2006 325i Nav screen went bank also, but the radio still played. I noticed the glove box light and trunk light did not turn on also. I was told from mechanics is was probably a CID module for $2200, even though I mentioned the glove box and trunk light light were out and specifically inquired about a fuse. The mechanics never checked the fuses, because I checked my fuses in the glove box and found the fuse 61 marked with a BMW symbol that looks like light bulb was blown. The Nav screen started back up once the fuse was changed.

carry out a battery reset and this is done by disconnecting the battery for 10 mins.

Hi kuldipdhanja this sounds like it could be an internal fault with the video module or the sat nav drive, you could try discontecting the battery negative lead for 15 minutes to reset the control units, you will have to remove the spare wheel and unfasten the air compressor bracket to get to the battery, this fix may only be temporary but it is alot cheaper than replacing parts. regards mark.

I had the same problem with the suspension on an o2 X5 Sport,it was the stabiliser pump in the rear,Range rover is the same pump and is cheaper than the BMW part,they also do an exchange unit.