GF18.40-P-4114CY Component Description For the Oil Level Check Switch

GF18.40-P-4114CY Component Description For The Oil Level Check Switch
ENGINE 272.911 in MODEL 204.0 up to Model Year 8
ENGINE 272.921 in MODEL 204.0 /2 up to Model Year 8
ENGINE 272.947 in MODEL 204.0 /2 up to Model Year 8
ENGINE 272.948 in MODEL 204.0 up to Model Year 8
ENGINE 272.961 in MODEL 204.0 /2 up to Model Year 8
ENGINE 272.971 in MODEL 204.0 up to Model Year 8








Location

S43 Oil level check switch
Arrow: Plug connection

The switch is located inside and the connector outside on the oil pan.

Task
The switch recognizes the minimum oil level in the engine oil pan.





Body (shown with sufficient engine oil level)

30 Float
31 Ring magnet
32 Dry-reed contact
34 Ground contact
39 Base plate
41 Switch housing

S43 Oil level check switch

Function
The engine oil from the engine oil pan reaches the switch via 2 bore holes in the switch housing. The float is moved according to the oil level. The dry-reed contact is closed for an adequate engine oil level by the magnetic field from ring magnets. If the engine oil level becomes too low the dry-reed contact opens and the connection to the ground contact is interrupted. This is recognized by the ME-SFI [ME] control unit (N3/10) and an appropriate warning signal is sent via the chassis CAN (CAN E) to the instrument cluster (A1).

Short term fluctuations in the level are balanced out by the size of the oil volume and the 2 holes the switch housing (for example when braking or cornering) which prevents unnecessary warning signals.