C 43 AMG (202.033) V8-4.3L (113.944) (1998)
Outside Temperature Display Sensor: Description and Operation
Outside Temperature Sensor
The outside air temperature sensor (B14) serves for measuring the outside temperature.
The resistance of the outside air temperature sensor depends on the ambient temperature and the speed. When the outdoor temperature increases the
resistance decreases. This information is relayed via the instrument cluster and serial interface (K1) to the pushbutton control module.
This information causes a slight reduction or increase of the temperature set on the pushbutton control module. This provides greater comfort by
adapting the temperature to the temperature perceived subjectively by the passengers.
The interrelationship between the outdoor temperature and vehicle speed prevents an excessively high temperature from being relayed to the pushbutton
control module when the vehicle is standing still or driving slowly resulting from heat being radiated from the engine.
The temperature measured last is used when the ignition is switched off and on and at speeds below 20 km/h.