LV /LW Focus shutting down while driving
 

My daughter has a LV Focus while driving the engine shuts down, the taco still reads what the last revs were at and so does the speedo, she was going around a round-about and the engine died, but the radio stayed on the taco still had 1,500 rpm and the speedo still had 25 Kms per hour showing, she rolled to a stop on the side of the road and nothing changed and the dash still locked on last readings. While waiting for help she decided to wipe the dash down and bumped the hazard button the speedo dropped back to "0"the taco dropped back and car could be started. The car is a manual had a new battery fitted 3 weeks ago new plugs and coils as well