GF00.20-P-2007P Remaining Distance, Function

GF00.20-P-2007P Remaining Distance, Function
- MODEL 203 with ENGINE 271 as of 1.6.05, 272, 642 up to model year 08/YoM 07

The indicated remaining distance immediately after the oil change reset for gasoline engines is 15.000 km or 10.000 miles and for diesel engines it is 20.000 km. The remaining distance calculated during the service interval is greatly dependent on the starting distance.

Starting distance
Starting distance refers to the minimum mileage in kilometers or miles which can be covered up to the next service. However, this only applies if the prescribed nominal quantity of engine oil was filled in when the oil was changed.
The starting distance depends on the quality factors that are set. The quality factors are preset by the plant to basic settings.

They can be changed via STAR DIAGNOSIS, if required by the operating conditions.
The starting distance is not dependent on the driving conditions (evaluation of the distance traveled).
Generally, the standard value is 15.000 km or 10.000 miles for gasoline engines and 20.000 km for diesel engines. Depending on quality factors, however, the value may deviate. Following each oil change, the starting distance is automatically set to its initial value by the oil change reset. The starting distance is an internal operand, and cannot be displayed in the instrument cluster (A1). The starting distance can only be displayed with STAR DIAGNOSIS.
The multifunction display (A1p13) in the instrument cluster (A1) shows the remaining distance.

Remaining distance
Immediately after the oil change the remaining distance is equal to the starting distance, if the prescribed nominal top-up quantity was filled in when the oil was changed. The remaining distance is the distance remaining between the current kilometer reading and the next service. The possible interval length is at least as long as the remaining distance displayed immediately following an oil change. At most it is twice the starting distance.
The remaining distance is dependent:
- The starting distance
- On the driving conditions (to this end, an evaluation of the distance traveled is conducted)

This means that the Active Service System (ASSYST) also takes the driving conditions into consideration.

In the event of a favorable evaluation, the driver is provided with a quantity rebate, which extends the remaining distance and therefore the service interval, e.g. by:
- Few cold starts
- No high engine speeds
- Few short-distance runs
- Few trailer operations

The matter of whether the vehicle is actually being driven or whether the engine is idling is also taken into consideration. In order to achieve this, ASSYST is continuously provided with data regarding the vehicle's current operating conditions.
The best evaluation is 0.6 km for each actual kilometer driven. In the event of unfavorable evaluation of the route (e.g. frequent short-distance runs, many cold starts), the remaining distance, and therefore the service interval, are less than in the event of favorable evaluation (assuming equal quality factors).
The most unfavorable calculation is up to 3 km for each actual kilometer driven.

The remaining distance is displayed as standard. However, for drivers of vehicles with low annual mileage, the vehicle's operation time is always being processed in the background, to ensure the drivers are informed of an upcoming service interval. The remaining distance is compared with the remaining time on a daily basis. In certain conditions, the display changes over and the remaining time is displayed.

If ASSYST is missing measurement values, e.g. due to the failure of a sensor, it uses substitute values stored in the control units. A corresponding entry is made in the fault memory of the particular control unit or instrument cluster (A1). If the operating voltage fails, the data are retained.