My Audi Q7 2013 cut off power and won't start while driving at a traffic stop

[Lioner]

Please can anyone give me an ideal 

[Steve Q]

My advice would be to get it to a garage got a diagnostic check. This could be as simple as a failed battery or alternator. When you tried to start it was there any cranking or just nothing? 

[Lioner]

There is cranking