mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Coolant Temperature Sensor, Location/Task/Design/Function|Page 5968 > < Coolant Temperature Sensor, Location/Task/Design/Function
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B11/4 

Coolant temperature sensor

Plastic housing with NTC resistor. 2-pin, slanted plug connection.
Inserted into hole and sealed with O-ring. Mounting over a spring clasp or holder

Coolant Temperature Sensor, Function

Coolant Temperature Sensor, Function

B11/4 

Coolant temperature sensor

The NTC resistor alters its electrical resistance in line with the coolant temperature. It decreases as the temperature increases.
Example:

Coolant temperature Resistor
20°C 3100 ohms ±5 %
80°C 315 ohms  ±5 %

Coolant Temperature Sensor, Location/Task/Design/Function|Page 5968 > < Coolant Temperature Sensor, Location/Task/Design/Function