Originally Posted by cobradav' post='388628' date='Feb 7 2007, 10:31 PM

A little of everything on this one. I had the symptom, thought it was this:

SI B 84 08 05
Phone, Navigation Systems March 2006
Technical Service

This Service Information bulletin supersedes S.I. B84 08 05 dated January 2006.
designates changes to this revision

SUBJECT
CCC - CID Switches Between BMW Banner and Blank Screen
MODEL
E90, E91 (3 Series) with SA 609 Car Communication Computer (CCC)

E60, E61 (5 Series) with SA 609 Car Communication Computer (CCC)

E63, E64 (6 Series)
SITUATION
The customer may complain that the Central Information Display (CID) switches between the BMW banner and a blank screen (resets). One of the following fault codes is stored:

CID FC "A468 LVDS cable break"

CCC-BO FC "A3E4 fault in file system"

CAUSE
CCC Failure

PROCEDURE 1 (CID FC A468)
On a customer complaint basis, submit a PuMA case to the Electrical Group along with FASTA data.
But turned out a PROGMAN upgrade did the trick with NO CCC replaced. No one answer, but get it to the dealer.

Also for the cold theory we have this:

SI B 84 08 06
Phone, Navigation Systems March 2006
Technical Service

This Service Information Bulletin supersedes S.M. B84 240 04 dated December 2004.

SUBJECT
CCC Navigation is Inoperative at Low Ambient Temperatures
MODEL
E60 (5 Series) with SA 609 (CCC Navigation)

E63, E64 (6 Series)

Vehicles produced from June 1, 2004 up to November 30, 2004
SITUATION
The customer states that "Please wait..." appears in the navigation screen and the navigation system is inoperative at ambient temperatures below 37?F.

All other menus (Communication, Entertainment, etc) can be operated using the controller without any problem.

After the electronics unit has warmed up, the Navigation system starts working.

CAUSE
DVD drive failure at low ambient temperatures.

PROCEDURE
Replace the DVD drive as per SI B84 12 04.

Originally Posted by papereyes' post='388733' date='Feb 8 2007, 06:50 AM

Thanks for the help guys, booked it in for a diagnostic. As its still under warranty do i get charged for the diagnostic check?

Originally Posted by daMANiack' post='388720' date='Feb 8 2007, 03:05 AM

Hi,

Don't know if this will help, have to tried disconnecting the battery (-) lead for at least 10 minutes.

I think you'll loose the date, time and maybe have to initialise the Active Steering, but it may reboot the system and clean out any gremlins.

Cheerz

Originally Posted by katheikia' post='388515

Unfortunately couldn't find it, and the F7 key for spellign didn't work either, as my spelling in my original post was atricious

Originally Posted by Rudy' post='388785' date='Feb 8 2007, 10:15 AM

Maybe I'm wrong but it looks as if papereyes thinks katheikia was kidding around about with his comment but in reality, E60's with Nav do have a control-alt-delete function built into the system to reboot the iDrive system without restarting the car.

http://forums.e60.net/index.php?showtopic=25869

As far as the spontaneous reboot that papereyes experienced, cobradav's post looks pretty on target but keep in mind that earlier versions of software also had an issue with the CCC simply bombing and locking/rebooting itself. If it happens often at low temperatures, it's likely that the DVD drive is failing (per cobradav's post) but if it happens randomly, you might need a software upgrade...