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Heat left/right outside rearview mirrors function - GF88.79-P-2000G

MODEL 463.306 /336 /346 as of model year 2011 /YoM 10 

MODEL 463.202 /222 /236 /237 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 as of model year 2007 

Fig 1: Heat Left/Right Outside Rearview Mirrors Function Diagram
G07711421Courtesy of MERCEDES-BENZ USA

Function requirements 

Function sequence for heated outside mirror 

The mirror heater is switched on and off depending on the outdoor temperature measured with the outdoor temperature indicator temperature sensor.

The front SAM reads in the outside temperature and transits it to the left front door control unit and right front door control unit via the interior CAN.

At an outside temperature of T < 15°C, the heated outside mirror is switched on and switched off at T > 19°C. If the temperature value received via the interior CAN is implausible, the heated outside mirror is always switched on at the specified function requirements.

  Component description for the outside temperature indicator temperature sensor B14 GF83.57-P-4002G
  Component description for front SAM control unit with fuse and relay module N10/1 GF54.21-P-6070G
  Component description for left front door control unit N69/1 GF72.29-P-4141G
  Component description for right front door control unit N69/2 GF72.29-P-4142G
  Electronic ignition/starter switch control unit (EZS), component description N73 GF80.57-P-6000G