150 Flexible service system
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
The service indicator disappears automatically after 
30 seconds or if button  Jon the instrument cluster is 
pressed.
Calling up service indicator manually:
Turn the electronic key in starter switch to position 1 
or 2.
Call up the trip odometer and main odometer by 
pressing button è or ÿ on the multifunction 
steering wheel until the display appears. See page 122.
Press button j or k until the FSS indicator 
appears.
The next or previous system is displayed by pressing 
button è or ÿ.
Important!
The FSS indicator does not include an engine oil level 
indicator. See page 156 for engine oil level indicator.Note:
When disconnecting vehicle battery for one or more 
days at a time, such days will not be counted. Any such 
days not counted by the FSS can be added by your 
Mercedes-Benz Center. 
The interval between services is determined by the type 
of driving for which the vehicle is used. For example, 
driving at extreme speeds, and cold starts combined 
with short distance driving in which the engine does not 
reach operating normal temperature, reduce the interval 
between services.