Engine Oil Condition

Condition Based Service (CBS)

Principle of Operation

Engine Oil Condition

The condition of the engine oil is detected by the oil condition sensor. Simultaneously, it also detects the engine oil level and the oil temperature.

The engine oil condition sensor is monitored by the ECM and is mounted in the lower oil sump.

The ECM contains an algorithm for evaluating the service due date. The following parameters are considered in the calculation:
- The correct oil grade is installed
- Oil level
- Oil temperature
- Engine load
- Fuel consumption (ti signal)
- Mileage
- Date (time elapsed since the last oil change)

The remaining life to the next service is forwarded from the ECM to the instrument cluster by a bus message when the ignition is switched "ON." When the "engine oil" service is due, it is shown in the instrument cluster or the Control Display

Note: The instrument cluster and the ECM must not be replaced simultaneously, otherwise all current oil maintenance schedule data will be lost.