SLK 230 (170.447) L4-2.3L SC (111.973) (2000)
Illustration shows 4-pin plug connection
B11/4
Coolant temperature sensor (further designations e.g. B11/3)
The NTC resistor alters its electrical resistance in line with the coolant temperature.NTC means negative temperature coefficient, in other words the
electrical resistance becomes less as the temperature rises:
Coolant temperature resistance
20 °C 3100 ohms ± 5%
80 °C 315 ohms ± 5%