Citroen C5 3.0 V6?

Hello, my car is a Citroen C5, it gives the error of the brake is defective, and the car does not start, the display does not show the gear, and it does not connect to the diagnostic device, please help me.
Parviz, March 2023


done
Thank you

Parviz, March 2023
link Click here to see other fixes for Citroen C5.