mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Coolant Temperature Sensor, Location/Task/Design/Function|Page 3412 > < Coolant Temperature Sensor, Location/Task/Design/Function
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B11/4 

Coolant temperature sensor (engine 119) 

B11/9 

Left coolant temperature sensor (engine 120) 

B11/10 

Right coolant temperature sensor (engine 120)

Example of coolant temperature 

20 °C  2 500 ohms ± 5% between connection 1 and 4 

6 500 ohms ± 5% between connection 2 and 3 

80 °C  325 ohms ± 5% between connection 1 and 4  

650 ohms ± 5% between connection 2 and 3  

Coolant Temperature Sensor, Function

Coolant Temperature Sensor, Function

Shown on engine 119 
B11/4 

Coolant temperature sensor

The NTC resistor integrated in the coolant temperature sensor (B11) alters its electrical resistance in line with the coolant temperature. NTC means

Coolant Temperature Sensor, Location/Task/Design/Function|Page 3412 > < Coolant Temperature Sensor, Location/Task/Design/Function