Coming to a roundabout and ....no brakes! After regaining composure we came to the conclusion it was the ABS pump and had it replaced, drove it around for two weeks roughly and then ...no brakes! We then were told it was the EGR(?) unit.(Under the glove compartment).Drove it about for 2 or 3 days then...no brakes.It has been suggested we change the brake fluid completely instead of just topping it up. Any more suggestions gratefully received.