i am sorry you have been waiting for so long for an answer,do you still need help with this.
i don't know what extra imformation you require
i am online until 9pm so can offer you help.
the rear brakes on this model have a shared life with the ford mondeo.
the handbrake mechanism is attached to the brake caliper and are a common fault .
there are two probable causes firstly the cable may have siezed or the brake caliper is at fault .
is this something that you would like to repair yourself with my help?
i don't know if i said it was an automatic
this will not make a difference on the caliper side of things.