I'm not getting any power to the radio system

I Lost my original key of my car and now I can't find the immoboliser

The infotainment system powers on for a few seconds at ignition but then shuts off. Pressing the radio on/off button won't turn it on. Other electrical functions are car operational. A camcorder is co… 

The car lost power while driving

Dysfonctionnement système pcs

Hybryd system faylure cayenne 2015