Oil Pressure Level Indication/Warning (Only Applies To Versions With Oil Pressure Sensors)
The oil pressure sensor is connected to the engine control module (ECM) (4/46). The engine control module (ECM) transmits the oil pressure signal onwards via the high speed section of the control area network (CAN). The central electronic module (CEM) (4/56) receives the signal and generates a corresponding signal on the low speed section of the control area network (CAN). The driver information module (DIM) (5/1) receives the signal. If the oil pressure is low, the driver information module (DIM) lights a red warning lamp and displays a message to warn the driver.
If the vehicle does not have an oil dipstick, the oil level is displayed in the trip computer in the Driver information module (DIM). These vehicles have an indicator that shows the actual oil level. From the indicator you can read out whether the vehicle has a high, low or correct oil level.
To calculate the vehicle's oil level, the engine must be switched off. Note, however, that the warning lamp and message in the Driver information module (DIM) is still shown when travelling if the oil pressure is too low.