M mr nurburgring Member chesterfield Mar 10, 2014 #2 Self leveling device for your headlights, when this brakes the lights default to the lowest position
L lotus791 Member N.Ireland Mar 10, 2014 #3 £40 flea bay £70 dealer . There is also one on the RR too.
C cj10jeeper Lifer Lichfield, England Mar 10, 2014 #4 It's one of the 2 sensors. 1 at front and 1 at rear.