Audible Bleep Warning And Knocking

[Guest keffa]

I have a 2001 C5, 75k, the knocking from the rear is constant now, i read somewhere its a design fault, Citroen admitted it? Recall?

 

oh well...finally everytime I brake now or corner the Stop light comes up, not always, but an audible bleep....bleeps ! this a warning??

 

Sad cos I like the car but am thinking of selling (back to Ford !)