Page 27 of 491
26 At a glanceMultifunction steering wheel
Item
Page
1
Multifunction display in 
speedometer
153
Operating control sys-
tem
154
2
Selecting the submenu or 
setting the volume:
Press buttonæup/to increaseçdown/to decrease
3
Telephone*:
Press buttonsto take a call
to dial a calltto end a call
to reject an incom-
ing call
Item
Page
4
Menu systems:
Press buttonèfor next systemÿfor previous system
5
Moving within a menu:
Press buttonjfor next displaykfor previous display 
     
        
        Page 34 of 491

33 Getting started
Unlocking
Get in the vehicle and insert the 
SmartKey in the starter switch.
For more information, see “Locking and 
unlocking” (
page 102). 
Unlocking with KEYLESS-GO*
With KEYLESS-GO your can open your 
vehicle without using the buttons on the 
SmartKey.
Pull the outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once (if 
equipped and feature activated).
For more information, see “Factory 
setting” (
page 110).
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.
Get in the vehicle.
For more information, see “SmartKey with 
KEYLESS-GO*” (
page 107). 
iThe SBC brake system is activated.iTo unlock the vehicle, the SmartKey 
with KEYLESS-GO must be outside the 
vehicle, no further than approximately 
3 feet (1 meter) away from the door. 
Warning!
G
When leaving the vehicle, always take the 
SmartKey with KEYLESS-GO with you, and 
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an 
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident 
and/or serious personal injury.
iThe SBC brake system is activated. 
     
        
        Page 43 of 491
42 Getting startedAdjustingInterior rear view mirror
Manually adjust the interior rear view 
mirror.
For more information, see “Rear view mir-
ror” (page 191). 
Exterior rear view mirrorThe buttons are located on the driver’s 
door.
1Passenger-side exterior rear view mir-
ror button
2Adjustment button
3Driver’s side exterior rear view mirror 
button
Switch on the ignition (
page 34).
Press button3 for the driver’s side ex-
terior rear view mirror or button1 for 
the passenger-side exterior rear view 
mirror.
Push adjustment button2 up, down, 
left or right according to the setting 
desired.
Warning!
G
Exercise care when using the passenger 
side exterior rear view mirror. The mirror 
surface is convex (outwardly curved surface 
for a wider field of view). Objects in mirror 
are closer than they appear. Check your in-
terior rear view mirror or glance over your 
shoulder before changing lanes. 
     
        
        Page 105 of 491

104 Controls in detailLocking and unlockingFactory settingGlobal unlocking
Press buttonŒ.
All turn signal lamps flash once.
An acoustic signal sounds once (if 
equipped and feature activated).
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically 
and reactivate the anti-theft alarm system 
within approximately 40 seconds of un-
locking if:
neither door nor trunk is opened
the SmartKey is not inserted in the 
starter switch
the central locking switch is not acti-
vatedGlobal locking
Press button‹.
All turn signal lamps flash three 
times.
An acoustic signal sounds three 
times if equipped and feature acti-
vated).
The locking knobs in the doors 
move down.
The anti-theft alarm system is 
armed.
Selective setting
If you frequently travel alone, you may wish 
to reprogram the SmartKey so that 
pressingŒ only unlocks the driver’s 
door and the fuel filler flap.
Press and hold buttonsŒ and‹ 
simultaneously for about five seconds 
until battery check lamp5 flashes 
twice.
The SmartKey will then function as fol-
lows:
iDepending on production date, your 
vehicle may be equipped with an 
acoustic lock and unlock confirmation 
signal feature. If your vehicle is 
equipped with this feature and the fea-
ture is activated, an acoustic signal will 
sound when the vehicle is locked or un-
locked using the SmartKey. 
To determine whether or not your vehi-
cle is equipped with this feature, con-
tact an authorized Mercedes-Benz 
Center. If equipped and you wish to ac-
tivate or deactivate the feature, or ad-
just its signal volume, also contact an 
authorized Mercedes-Benz Center.  
     
        
        Page 106 of 491

105 Controls in detail
Locking and unlocking
Unlocking driver’s door and fuel filler 
flap
Press buttonŒ once.
All turn signal lamps flash once.
An acoustic signal sounds once (if 
equipped and feature activated).
For more information, see “Factory 
setting” (
page 104).
The locking knob in the driver’s 
door moves up.
The anti-theft alarm system is dis-
armed.
Global unlocking
Press buttonŒ twice.
All turn signal lamps flash once or 
twice.
An acoustic signal sounds once (if 
equipped and feature activated).
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.
Global locking
Press button‹.
All turn signal lamps flash three 
times.
An acoustic signal sounds three 
times (if equipped and feature acti-
vated).
The locking knobs in the doors 
move down.
The anti-theft alarm system is 
armed.
Restoring to factory setting
Press and hold buttonsŒ and‹ 
simultaneously for about six seconds 
until battery check lamp5 flashes 
twice.
!If you cannot lock or unlock the vehicle 
with the SmartKey, then the batteries 
of the SmartKey are discharged, or the 
SmartKey is malfunctioning or the vehi-
cle battery is drained.
Check the batteries of the 
SmartKey (
page 112) and re-
place them if necessary 
(
page 408).
Use the mechanical key to unlock 
the driver’s door (
page 404) as 
required.
Have the vehicle batteries and their 
connections checked.
Use the mechanical key to lock the 
doors (
page 405).
If the SmartKey is malfunctioning, con-
tact an authorized Mercedes-Benz 
Center. 
     
        
        Page 107 of 491

106 Controls in detailLocking and unlockingChecking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Unlocking and opening the tailgate
You can unlock and open the tailgate sep-
arately.
A minimum height clearance of 6.76 ft 
(2.06 m) is required to open the tailgate.
Press and hold button Š until tail-
gate unlocks and begins to open.Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key, 
you should do the following:
Have the SmartKey deactivated by an 
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the 
mechanical key immediately to your 
car insurance company.
If necessary, have the mechanical lock 
replaced.
Your authorized Mercedes-Benz Center 
will be glad to supply you with a replace-
ment. 
!If battery check lamp5 does not 
come on briefly during check, then the 
SmartKey batteries are discharged.
Replace the batteries (
page 408).
You can obtain the required batteries 
at any authorized Mercedes-Benz 
Center.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing the 
button‹ orŒ will lock or unlock 
the vehicle accordingly.
!The tailgate swings open upwards auto-
matically. Always make sure there is 
sufficient overhead clearance.
Vehicles with tailgate opening/closing 
system: To stop the opening proce-
dure, press buttonŠ. The tailgate 
stops moving.iIf the vehicle was previously centrally 
locked, the tailgate will lock automati-
cally when closed.
To confirm locking all turn signal lamps 
flash three times. 
     
        
        Page 112 of 491

111 Controls in detail
Locking and unlocking
Selective setting
If you frequently travel alone, you may wish 
to reprogram the SmartKey with 
KEYLESS-GO so when you pull the driver’s 
door handle only the driver’s door and the 
fuel filler flap unlocks.
Press and hold buttonsŒ and‹ 
simultaneously for about five seconds 
until battery check lamp5 flashes 
twice.
The SmartKey with KEYLESS-GO will 
then function as follows:
Unlocking driver’s door and fuel filler 
flap
Pull the driver’s outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once (if 
equipped and feature activated).
For more information, see “Factory 
setting” (
page 110).
The locking knob in the driver’s 
door moves up.
The anti-theft alarm system is dis-
armed.
Global unlocking
Pull any outside door handle other than 
the driver’s outside door handle.
All turn signal lamps flash once.
An acoustic signal sounds once (if 
equipped and feature activated).
The locking knobs in the doors 
move up.
The anti-theft alarm system is dis-
armed.Global locking
Press lock button at outside door 
handle (
page 60).
All turn signal lamps flash three 
times.
An acoustic signal sounds three 
times (if equipped and feature acti-
vated).
The locking knobs in the doors 
move down.
The anti-theft alarm system is 
armed.
Restoring to factory setting
Press and hold buttonsŒ and‹ 
simultaneously for about six seconds 
until battery check lamp5 flashes 
twice. 
     
        
        Page 113 of 491

112 Controls in detailLocking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Unlocking and opening the tailgate
A minimum height clearance of 6.76 ft 
(2.06 m) is required to open the tailgate.
The handle is located in the rear license 
plate recess.
You can unlock and open the tailgate sep-
arately.
Pull on the handle.
or
Press and hold buttonŠ until the 
tailgate unlocks and opens.
!If you can no longer lock or unlock the 
vehicle with the SmartKey with 
KEYLESS-GO, then the batteries of the 
SmartKey are discharged, or the 
SmartKey is malfunctioning or the vehi-
cle battery is drained.
Check the batteries of the 
SmartKey with KEYLESS-GO 
(page 112) and replace them if 
necessary (
page 408).
Use the mechanical key to unlock 
the driver’s door (
page 404) as 
required.
Have the vehicle batteries and their 
connections checked.
Use the mechanical key to lock the 
doors (
page 405).
If the SmartKey with KEYLESS-GO is 
malfunctioning, contact an authorized 
Mercedes-Benz Center.
!If battery check lamp5 does not 
come on briefly during check, then the 
SmartKey batteries are discharged.
Replace the batteries (
page 408).
You can obtain the required batteries 
at any authorized Mercedes-Benz 
Center.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing the 
button‹ orŒ will lock or unlock 
the vehicle accordingly.