Headlamp Alignment Sensor: Description and Operation

GF82.10-P-4153G Headlamp Range Adjustment Axle Sensor, Component Description
MODEL 463.306 /336 /346 up to 31.5.12 as of model year 2011 /YoM 10
MODEL 463.202 /222 /236 /237 up to 31.5.12 as of model year 2009 /YoM 08
MODEL 463.247 /248 /249 /254 up to 31.8.08 as of model year 2007
MODEL 463.270 /271 /303 /340 /341 up to 31.5.12 as of model year 2007





A51 Headlamp range adjustment rear axle sensor
A52 Front axle sensor (headlamp range adjustment)

Location
The front axle sensor (headlamp range adjustment) is mounted at the left front on the longitudinal member, the headlamp range adjustment rear axle sensor is mounted at the left rear on the longitudinal member.

Tasks
The axle sensors determine the current vehicle level. The headlamp range adjustment control unit (N71) reads in both axle sensors discretely and uses the information to actuate the automatic headlight range adjustment (ALWR [LWR]).