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

GF00.20-P-2007Q Remaining Distance, Function
- Model 209.3 with ENGINE 112, 113, 271 up to 31.5.05, 612, 646
- Model 209.4 with ENGINE 112, 113, 271 up to 31.5.05

15.03.07 The document has been updated to this date and will no longer be subject to revision.

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 covered) or any possible oil refilling.
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 initial mileage
- On the driving conditions (to this end, an evaluation of the distance traveled is conducted)
- of possible oil refill

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

The following points will result in a favorable evaluation and the driver will receive a quantity rebate, which in turn will extend the remaining distance and thus the service interval:
- few cold starts
- no high engine speeds
- few short-distance runs
- few trailer operations
- Oil replenishments

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. In the event of optimum evaluation, only 0.6 km are calculated for each kilometer covered. In the event of unfavorable evaluation of the route (e.g. for frequent short-distance runs, many cold starts), the remaining distance and therefore the service interval is smaller than in the event of favorable evaluation (assuming equal quality factors). In the event of the most unfavorable evaluation, up to 3 km are calculated for each kilometer covered.

The remaining distance is displayed as standard. However, so that the attention of drivers of vehicles with low annual mileage is also drawn to a due service, the time information is also always processed in the background.
The remaining distance is compared with the remaining time on a daily basis. Under certain preconditions 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 in the instrument cluster (A1). If the operating voltage fails, the data are retained.