Radio Controls More Than The Radio

[seefive]

I was looking at a 2005 c5 a few weeks ago and when I pushed the "menu" button on the radio, it seemed to be giving me display options for the central information screen

 

Does this mean if you replace the radio with an after-market unit, you lose control of the display?

Given the recent announcements about turning off the FM transmitters in the not - too - distant future, it's going to be necessary to replace with a DAB unit. Easy enough on a Mark1 C5, not too sure about the Mark 2.

[DaveHerns]

I was looking at a 2005 c5 a few weeks ago and when I pushed the "menu" button on the radio, it seemed to be giving me display options for the central information screen

 

Does this mean if you replace the radio with an after-market unit, you lose control of the display?

Given the recent announcements about turning off the FM transmitters in the not - too - distant future, it's going to be necessary to replace with a DAB unit. Easy enough on a Mark1 C5, not too sure about the Mark 2.

I expect we'll be using DAB converters like the Pure Freeway or similar

Is there any need to switch off FM transmitters? Is there nothing better to spend licence/tax payers money on ?