LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2009 >> E350 Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Alarm, Entertainment, Lighting, Switches & Wiper/Washer -- Basic Knowledge -- E350 (211.256) >> Basic Knowledge >> Wiper system automatic speed reduction, function - GF82.30-P-4006T

Wiper system automatic speed reduction, function - GF82.30-P-4006T

MODEL 211.0/2 except CODE (494) USA version 

Fig 1: Networking Of Wiper System Automatic Speed Reduction Components
G07285053Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function requirements: 

Function 

If the vehicle speeds drops below approx. 8 km/h, the driver-side SAM control unit switches the wiper motor back by one stage. If intermittent wiping is active the longest wiper interval is selected.

Function abort 

The speed reduction is canceled by turning the combination switch to another position or by operating the touch wiping or washing functions.

If the value of approx.

8 km/h is exceeded again as the vehicle speed increases, the driver-side SAM control unit automatically switches the wiper motor back to the wiper stage set on the combination switch.

Rain/light sensor location/task/function B38/2 GF54.21-P-4123Q
Wiper motor, location/task/design/function M6/1 GF82.30-P-4104T 
Driver-side SAM control unit with fuse and relay module, location/task/design N10/1 GF54.21-P-4109T
Overhead control panel control unit, location/task/design N70 GF82.20-P-4110T 
Electronic ignition switch control unit, location/task N73 GF80.57-P-4120T
Steering column module, location/task N80 GF54.21-P-4125T
Combination switch, location/task/design/function S4 GF82.30-P-2100PP