31 Getting started
Unlocking
Starter switch positionsStarter switch0For removing SmartKey
The steering is locked when the 
SmartKey is removed from the starter 
switch. If necessary, move steering 
wheel slightly to allow the locking 
mechanism to engage.
1Power supply to some electrical 
consumers, such as seat adjustment
2Ignition (power supply for all electrical 
consumers) and driving position
3Starting position
Warning!
G
When leaving the vehicle, always remove the 
SmartKey from the starter switch and lock 
the vehicle. Do not leave children unattend-
ed in the vehicle, or with access to an un-
locked vehicle. Unsupervised use of vehicle 
equipment may cause an accident and/or 
serious personal injury.iVehicles with automatic transmission: 
The SmartKey can only be removed 
from the starter switch with the gear 
selector lever in positionP.
!If the SmartKey cannot be turned in the 
starter switch, the battery may not be 
sufficiently charged.
Check the battery and charge it if 
necessary (
page 323).
Get a jump start (
page 326).
To prevent accelerated battery 
discharge and a possible dead battery, 
always remove the SmartKey from the 
starter switch when the engine is not in 
operation. 
266 OperationMaintenanceThe Mercedes-Benz Center will reset the 
service indicator following a completed 
service.Calling up the service indicator
Switch on ignition.
The standard display of the control 
system appears (
page 113).
Press buttonk orj on the mul-
tifunction steering wheel until the FSS 
indicator appears in the multifunction 
display.
Resetting the service indicator 
In the event that the service on your 
vehicle is not carried out by an authorized 
Mercedes-Benz Center, you can reset the 
service indicator yourself.
Switch on ignition.
The standard display of the control 
system appears (
page 113).
Press buttonk orj on the mul-
tifunction steering wheel until the FSS 
indicator appears in the multifunction 
display.
Press reset button for about three 
seconds.
This message appears in the multifunc-
tion display:SERVICE INTERVAL?
RESET WITH R BUTTON FOR 3 SEC.
To confirm, press reset button until you 
hear a signal.
The service indicator now displays the 
reset interval.
iIf the battery is disconnected, the days 
of disconnection will not be included in 
the count shown by the service indica-
tor. To arrive at the true service 
deadline, you will need to subtract 
these days from the days shown in the 
service indicator.
Do not confuse the service indicator 
with the engine oil level indicator:.
iIf the service indicator was 
inadvertently reset, have a 
Mercedes-Benz Center correct it.
Only reset if the proper service has 
been performed. Resetting the system 
without performing proper service as 
called for by the FSS will cause the FSS 
to incorrectly determine the next 
service interval which will result in 
engine damage not covered by the 
Mercedes-Benz Limited Warranty.