SL 500 (129.068) V8-5.0L (113.961) (2000)
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interval (remaining distance and remaining time).
Survey of ASSYST influencing parameters
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Weighting factors (dependant on reallife driving conditions):
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Load torque
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Engine speed
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Oil level
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Engine oil temperature
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Oil correction factor (is used as comparative value for determining oil level)
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Coolant temperature
These data are supplied by the injection system control module (N3) to the service microprocessor over the CAN.
The data relating to oil level, engine oil temperature and oil correction factor are supplied by the oil sensor (oil level/temperature/quality, B40) through
the injection system control module (N3), and are therefore only available on engines fitted with this sensor.
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Quality factors (these are factory-set to base values and can be changed with the HHT, if operating conditions of the vehicle so necessitate; they
influence the start distance):
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Engine version factor (gasoline/diesel)
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National factor (The kilometer or mileage is coded in accordance with the national version.)
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Distance travelled:
ASSYST is supplied with the 4 wheel speeds from the traction systems control module (N47) over the CAN for calculating the distance travelled.
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Time
ASSYST is supplied with the time information from the clock integrated in the instrument cluster.
GF00.20-P-0003A Active Service System (ASSYST) Function
GF00.20-P-0003A Active Service System (ASSYST) Function
General
The "Active service system (ASSYST)" draws the attention of the driver to a service which is due. ASSYST is a demand-activated engine oil service
system. In other words, in addition to the pure time and distance criterion, various factors are taken into account for calculating the demand-oriented
service intervals. These are on the one hand quality factors which are coded with the HHT, and on the other hand weighting factors which take into
account driving conditions and thus actual wear and tear.
After a level has dropped below a warning threshold, the remaining distance or the remaining time is displayed in text panel (b) and the tool symbol (a)
appears in the display (top ill.). In addition, ASSYST features a low engine oil level display. If the oil level is too low or too high, this appears in text
panel (b) and the oil can symbol (a) is displayed (bottom ill.).
(The illustrations relate to models with multifunction display.)
Service A/B display