114 Controls in detail
Locking and unlocking
Opening the trunk
You can open the trunk if the vehicle is sta-
tionary and the retractable hardtop is fully 
opened or closed.
A minimum height clearance of 
6.2 ft (1.88 m) is required to open the 
trunk lid.!A side window will not work if it is blocked 
with ice or if the battery needs charging. If you 
cannot shut a door, do not force it or you could 
damage the door or the side window. 
Fix whatever is affecting the window before 
trying to shut the door.
iIf you hear a warning signal, you have forgot-
ten to switch off the low beam headlamps or the 
parking lamps before opening the driver’s door.
In addition, the message 
Lights Are Still 
On
 appears in the multifunction display.
Switch off the low beam headlamps or the park-
ing lamps.
If the message 
Switch off lights or 
remove key. 
appears in the multifunction 
display, remove the SmartKey from the starter 
switch or switch off the automatic headlamp 
mode.
!Failure to switch off the exterior lamps when 
leaving the vehicle may result in a discharged 
battery.
iIf the vehicle has previously been locked 
with the SmartKey or KEYLESS-GO*, opening a 
door from the inside will trigger the anti-theft 
alarm system.
To cancel the alarm, do one of the following:
Press buttonŒ or‹on the 
SmartKey.
Insert the SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:
Grasp an outside door handle.
The SmartKey with KEYLESS-GO* must be 
within 3 ft (1 m) of the vehicle.
Press the KEYLESS-GO* start/stop button 
(
page 41).
The SmartKey with KEYLESS-GO* must be 
inside the vehicle.
Warning!G
Make sure the trunk is closed when the 
engine is running and while driving. 
Among other dangers, deadly carbon 
monoxide (CO) gases may enter vehicle 
interior resulting in unconsciousness and 
death.
iIf the trunk lid does not open, the trunk lid is 
still locked separately (
page 120). 
332 Operation
Maintenance
Calling up the maintenance service 
indicator display
You can call up the maintenance service in-
dicator display at any time to check when 
the next maintenance service is due.
Switch on the ignition (page 40).
Press button è or ÿ on the mul-
tifunction steering wheel repeatedly 
until the standard display appears in 
the multifunction display (
page 149).
Press button k or j on the 
multifunction steering wheel until the 
maintenance service indicator display 
with the maintenance service symbol 
9 or ½ appears in the left multi-
function display and the maintenance 
service deadline appears in the right 
multifunction display.Resetting the maintenance service 
indicator 
In the event that the maintenance service 
on your vehicle is not carried out by an au-
thorized Mercedes-Benz Center, you can 
have the maintenance service indicator 
reset. The automotive maintenance facility 
carrying out the maintenance service will 
find the information for resetting the 
maintenance service indicator in the main-
tenance-relevant information for your vehi-
cle. Such information is available from an 
authorized Mercedes-Benz Center or 
directly from Mercedes-Benz.
iThe menu overview can be found on 
(
page 146).
iIf the battery supplying the vehicle’s electri-
cal consumers is disconnected, the days of dis-
connection will not be included in the count 
shown by the maintenance service indicator. To 
arrive at the true maintenance service deadline, 
you will need to subtract these days from the 
days shown in the maintenance service indicator 
message or maintenance service indicator dis-
play. 
Do not confuse the maintenance service indica-
tor with the engine oil level indicator N.
!If the maintenance service indicator was in-
advertently reset, have an authorized 
Mercedes-Benz Center correct it.
Only reset if the proper maintenance service has 
been performed. Resetting the system without 
performing proper maintenance service as 
called for by the maintenance service indicator 
will result in engine damage and/or other vehicle 
damage not covered by the Mercedes-Benz 
Limited Warranty.