S 430 4MATIC (220.183) V8-4.3L (113.948) (2003)
Climate Control Exhaust Gas Sensor: Description and Operation
The multifunction sensor measures the humidity in the air, the ambient temperature, pollutant concentration in the outside air and controls the output of
the A/C compressor, i.e; provides a control signal to the automatic A/C pushbutton control module for switching the system to 100% recirculated air
when required.
Function