Everything has stopped working

[Litcoat]

Alright all,
I've got a 64 plate v6s f type and for some reason the radio, sat nav, telephone and reversing camera have all stopped working there is power to the radio, the sat nav says it is initializing, the phone won't let me connect and the reversing camera is just a black screen. Has anyone else had a similar problem and managed to work out what it is. Any advice would be greatly appreciated.
Cheers

[miniman]

Start with a new battery. Failing battery (even if it will start the car) = random electrical carnage.

[ninepoint2]

Try getting local Indie to scan car would be a good starting point I think

[Litcoat]

Cheers, I'll give it a go