Fuse or relay for reversing sensors

[Ds5 airdream]

Could you please tell me where the live feed fuse is located for the reverse sensors on my DS5 hybrid4 because they are completely dead and the diagnostic say's open circuit which I take is a fuse or relay or a broken wire but the switch behind the steering wheel is also dead and doesn't light up as it should, Peter

[Maxge]

Same problem sensors not working, blind spot. Only the camera goes