If you have your MK III connected right it will show in 16:9 mode after update. Tv tuner will only interfear with 16:9 and go to 4:3 when you watch tv, so let me put this clearly for you, Your problem right now is not TV or Radio module, When MK 3 is connected right it is the primary video suorce. If you can se Navigation menu on your nav screen and you updated the software in MK3 then check wires or something becouse it should work.

__________________
X5 4,4i-06 Current
330Ci Cab-03 2007-2008
MB E55 AMG-03 2006-2007
Z3 2,8 Roadster-98 2006-2007
X3 2,0d-05 2005-2006
320d-99 1999-2005

Not VALID INFO!!!
The primary video source is mk3, but the bordmonitor gets the picture via TV module. You can check it, disconnect the TV modul, and there will be no picture on bordmonitor. I have different TV modules, and if I connect a 4:3 TV module into my 2002 E39 (original 16:9 system), there will be 4:3 main menu, navigation, telephone etc.
Back to the original problem: concepo has to buy a 16:9 TV-module, this is the solution.

Bombolo

Ok, thanks for the answers so far

I have just talked to a guy here in Denmark, who has a TV tuner.
He thinks it is a 16:9 but he is not sure.

This is what is written on the TV Tuner / Radiomodule box:
BMW.6 911 221-
037138052 044109 00
LEAR HW:04/SW:11/AI:01 04831 .

Can someone tell me if its for 16:9 or the old model,

Thanks ,
Thomas

Yes, your TV module supports the 16:9 display.

http://www.bimmerboard.com/forums/posts/230382

__________________
SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input

,
Sure if you say so...
All i know is that the MK is primary video source and TV secondary. My 330 Cab had no tv module and everything worked fine.
So what you mean is if you have tv module it controls menu navi and so on since he has everything in 4:3, so he could basicly remove or dissconenct tv module and he should get 16:9?

__________________
X5 4,4i-06 Current
330Ci Cab-03 2007-2008
MB E55 AMG-03 2006-2007
Z3 2,8 Roadster-98 2006-2007
X3 2,0d-05 2005-2006
320d-99 1999-2005

If you don't have TV function in your car, the mk3 gives the picture directly to the bordmonitor. Even an mk2 can give fullscreen picture on a 16:9 monitor.
If you have tv function, without TV module there will be no picture on the bordmonitor, because the wiring is serial. mk3->TV module->Bordmonitor.
So in this case the TV module determines displayed picture.
Bombolo