SLK 230 (170.447) L4-2.3L SC (111.973) (2000)
Coolant Level Indicator Lamp: Description and Operation
NOTE: Numbers in parentheses ( ) indicate a component or tool in the associated illustration.
Function Of Coolant Level Indicator
-
The coolant level indicator monitors the coolant level in the expansion tank or radiator, respectively, when the engine is running.
-
If the coolant is at the correct level, the contact (arrow) in the coolant level sensor (S41) is open.
-
When the coolant level drops, the float (51) moves down. When the ring magnet (54) is positioned above the contact (arrow in the coolant level
sensor, the contact closes.
-
Vehicle ground now exists at the microprocessor and the indicator fight (Ale11) comes on.