Handbreak , ABS, ASR and ESP failure

[Bane]

Hi, I have Citroen C5 Exclusive Automatic, my problem is that today i got handbrake error on central display and my ABS and ASR dashboard lamps starts to glow, the car turn off the ASR, and when i tried to turn it on, i got error ESP /ASR system faulty , and i tried to turn off the handbreak but it wont turn off, and i get error on the display Foot must be on break, and I'm holding my foot on brake. Does anyone knows where the problem is ? Thank you and sorry for my bad english

[GiveMeABreak]

The ABS / ESP ECU also controls the electric parking brake. So any issues with the ESP system will cut off some of the handbrake functions. However, there are over a hundred fault codes relating to the electronic parking brake, so you really need to have it read with a Lexia system with Diagbox to find the fault codes. If you can do that and post them here we may be able to help identify the issue. Without that, it will be hard to diagnose where the fault is originating from - as it could be an ABS wheel sensor, the wiring or even a component in the EPB (electronic Parking Brake) itself.

Also post up your VIN when you get the codes.