Assyst Plus is a cunning little device which tells you when your next service is due. When my S class was new it told me there were 15K miles to an ‘A’ service.
Having done those miles now, I am still 6000 miles away from an ‘A’ service!
Whilst Mercedes say that the system takes into account ‘demands on the engine oil’ by such sensors as: Oil level and temp, Coolant temperature, Engine and road speed and engine load, I’m not sure that the algorithm is as complex as that.
Using just mileage, total fuel used (gives a good indication of how hard the engine is worked) and number of cold starts would give most if not all the information.
Does anybody know (or care!) what actual parameters are used?
Having done those miles now, I am still 6000 miles away from an ‘A’ service!
Whilst Mercedes say that the system takes into account ‘demands on the engine oil’ by such sensors as: Oil level and temp, Coolant temperature, Engine and road speed and engine load, I’m not sure that the algorithm is as complex as that.
Using just mileage, total fuel used (gives a good indication of how hard the engine is worked) and number of cold starts would give most if not all the information.
Does anybody know (or care!) what actual parameters are used?