S 420 (140.043) V8-4.2L (119.981) (1996)
Heater Core Temperature Sensor / Switch: Locations
The left and right heater core temperature sensors (B10/2 and B10/3) are located on the A/C housing behind the heater core.
The left and right rear air conditioning (vehicles with rear A/C) heater core temperature sensors (B10/9) and (B10/10) are located at the rear of the rear