S 430 4MATIC (220.183) V8-4.3L (113.948) (2003)
Heater Core Temperature Sensor / Switch: Locations
Heater Core Temperature Sensor
Illustrated On Model 220
The left heat exchanger temperature sensor (B10/2) and right heat exchanger temperature sensor (B10/3) are located on the A/C housing (1).
Rear Heater Core Temperature Sensor