Hand break &dsc light

The hand break light and the Dsc light keep coming up on mu 320d 2005 Bmw.
the lights are yellow and were coming up now and again once you turned the engine off they disappeared. They are on Continually now. Could this be the pressure sensor on the break cylinder. If so can anybody please help me with a drawing and part number. Can this be dangerous for driving.The car has to get a NCT will they pick it up.
Cheers
!RAY

Hi
The part is DSC pressure sensor part number 34521164458.
Link to discripition is
http://www.realoem.com/bmw/showparts.do?model=AS71&mospid=47635&btnr=34_1092&hg=34&fg=25&hl=7
Cheers
Ray

I had this a few years ago, was the rear wheel speed sensor, is your speedo working? Could also be an ABS issue.

X.

This is the ABS pump or something like that which BMW had a recall on. I had it replaced under warranty on my 07 116 a couple of months ago.