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Outside temperature sensor, location/task/design/function - GF83.57-P-2103R

MODEL 230 

Fig 1: Locating Ambient Temperature Display Temperature Sensor - Model 230
G04737991Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  Outside air temperature sensor position The outside temperature indicator temperature sensor (B14)  is in the bumper, at the left-hand side.  
  Outside air temperature sensor purpose Recording outside temperature as electrical value
  • for displaying the outside temperature on the instrument cluster (A1)  and
  • controlling various functions that are dependent on the outside air temperature.
 
  Outside air temperature sensor design The sensor is in a housing made from top quality plastic that is firmly clipped to the vehicle.  
  Outside air temperature sensor function The outside temperature indicator temperature sensor (B14)  is a temperature dependent resistance with negative temperature coefficients (NTC). The outside temperature indicator temperature sensor (B14)  changes its resistance with increasing temperature  .