Page 74 of 304

74 Controls in detailLocking and unlockingIn the “Controls in detail” section you will 
find detailed information on how to oper-
ate the equipment installed in your vehicle. 
If you are already familiar with the basic 
functions of your vehicle, this section will 
be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the 
“Getting started” section of this manual. 
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlockingKeys
More information on the remote control 
with folding key can be found in the “Get-
ting started” section (
page 28).
Your vehicle comes supplied with two re-
mote controls with folding key.
The remote control provides an extended 
operating range. To prevent theft, howev-
e r , i t  i s  a d v i s a b l e  t o  o n l y  u n l o ck  t he  v e h i cl e  
when you are in close proximity to it.
The remote control centrally locks and un-
locks:
the doors
the trunk
the fuel filler flap
the storage compartment in armrest
You can lock and unlock each individual 
lock with the key. 
Remote control with folding key1Œ
Unlock button
2
‹
Lock button
3Release button for key
4Battery check lamp
5
Â
Panic button (
page 65) 
!To prevent possible malfunction, avoid 
exposing the remote control to high 
levels of electromagnetic radiation. 
     
        
        Page 75 of 304

75 Controls in detail
Locking and unlocking
Factory setting
Global unlocking
Press button
Œ
.
All turn signal lamps blink once. The 
locking knobs in the doors move up.
The vehicle will lock again automatically 
within approximately 40 seconds of un-
locking if neither door nor trunk is opened, 
the key is not inserted in the steering lock, 
or the central locking switch is not 
activated.
Global locking
Press button
‹
.
All turn signal lamps blink three times. 
The locking knobs in the doors move 
down.Selective setting
If you frequently travel alone, you may wish 
to reprogram the remote control so that 
pressing
Œ
 only unlocks the driver’s 
door, the storage compartment in the arm-
rest and the fuel filler flap.
Press and hold buttons
Œ
 and
‹
 
simultaneously for about 5 seconds un-
til battery check lamp4 blinks twice.The remote control will then function 
as follows:
Unlocking driver’s door, storage com-
partment in armrest and fuel filler flap
Press button
Œ
 once.
Global unlocking
Press button
Œ
 twice.
Global locking
Press button
‹
.
Restoring to factory setting
Press and hold buttons
Œ
 and
‹
 
simultaneously for about 6 seconds un-
til battery check lamp4 blinks twice.
iIf the turn signal lamps do not blink 
three times, one of the following ele-
ments may not be properly closed:
a door 
the trunk
Close the respective element and lock 
the vehicle again. 
     
        
        Page 76 of 304

76 Controls in detailLocking and unlocking
Checking the batteries
Press button
‹
 or
Œ
 longer than 
1second.
The battery check lamp4 lights up 
briefly to indicate that the key batteries 
are in order.
Warning!
G
When leaving the vehicle, always remove the 
key from the steering lock and lock the vehi-
cle. Do not leave children unattended in the 
vehicle, or with access to an unlocked vehi-
cle. It is possible for children to open a 
locked door from the inside, which could re-
sult in an accident and/or serious injury.
!If you can no longer lock or unlock the 
vehicle with the remote control, then 
either the batteries in the remote con-
trol are discharged, the remote control 
is malfunctioning, or the vehicle battery 
is drained.
Check the batteries in the remote 
control and replace them if neces-
sary (
page 212)
or
Synchronize the remote control 
(page 213)
or
Use the folding key to unlock the 
doors (
page 210) and the trunk 
(
page 210) as required. Lock the 
vehicle using the folding key 
(page 211).
If the remote control is malfunctioning, 
contact an authorized Mercedes-Benz 
Center.
!If battery check lamp4 does not light 
up briefly during the check, then the re-
mote control batteries are discharged.
Replace the batteries (
page 212). 
You can obtain the required batteries 
at any authorized Mercedes-Benz 
Center. 
     
        
        Page 78 of 304

78 Controls in detailLocking and unlockingOpening the doors from the inside
You can open a locked door from the in-
side. Open door only when conditions are 
safe to do so.
1Inside door handle
Pull on door handle1.If a door was locked, the locking knob 
will move up.
Trunk lid emergency release
The handle for the trunk lid emergency 
release is located in the trunk lid.
1Handle
Pull handle1 in direction of arrow to 
open the trunk lid.
Automatic central locking
Factory setting
The doors and the trunk automatically lock 
when the ignition is switched on and the 
left front wheel turns at vehicle speeds of 
approximately 9 mph (15 km/h) or more.
You can open a locked door from the in-
side. Open door only when conditions are 
safe to do so.
Warning!
G
Only drive with the trunk closed as, among 
other dangers such as visibility blockage, 
exhaust fumes may enter the vehicle interi-
or.
iThe anti-theft alarm system is triggered 
when the trunk is opened from the 
inside and the vehicle was previously 
centrally locked.
iThe doors unlock automatically after an 
accident if the force of the impact ex-
ceeds a preset threshold.
To prevent the vehicle door locks from 
locking, deactivate the automatic cen-
tral locking when the vehicle
is pushed or
is on a test stand 
     
        
        Page 80 of 304

80 Controls in detailLocking and unlockingLocking and unlocking from the inside
You can lock or unlock the vehicle from in-
side using the central locking switch. This 
can be useful, for example, if you want to 
unlock the passenger door from the inside 
or want to lock the vehicle before starting 
to drive.Locking
Press upper part1 of central locking 
switch (
page 79).
If all the doors are closed, the vehicle 
locks.
Unlocking
Press lower part2 of central locking 
switch (
page 79).
The vehicle unlocks if not previously 
centrally locked with the remote con-
trol.
iYou can open a locked door from the 
inside. Open door only when conditions 
are safe to do so.
If you have locked the vehicle with the 
remote control, the central locking 
switch does not work.
Warning!
G
When leaving the vehicle, always remove the 
key from the steering lock and lock the vehi-
cle. Do not leave children unattended in the 
vehicle, or with access to an unlocked vehi-
cle. Unsupervised use of vehicle equipment 
may cause an accident and/or serious per-
sonal injury. 
     
        
        Page 86 of 304
86 Controls in detailLightingInterior lighting
1Switch for automatic control
2Switch for interior lightingAutomatic control 
Activating
Turn switch1 to the right.
Interior lighting is switched on in dark-
ness when you
unlock the vehicle
open a door
open the trunk lid
The interior lighting switches itself off 
again after a short pause.Deactivating
Turn switch1 to the left.
The interior lighting remains switched 
off in darkness, even when you
unlock the vehicle
open a door
open the trunk lid
iIf the door remains open, the interior 
lighting switches off automatically after 
approximately five minutes. 
     
        
        Page 88 of 304

88 Controls in detailInstrument cluster
Instrument clusterA full view illustration of the instrument 
cluster can be found in the “At a glance” 
section of this manual (
page 20).
The instrument cluster is activated when 
you
open the driver’s door
turn the key in steering lock to 
position2 (
page 29)
press the left knob3 (
page 20)
Instrument cluster illumination
Instrument lamps
To brighten illumination
Turn knob3 (
page 20) clockwise.
The instrument lamps will brighten.
To dim illumination
Turn knob3 counterclockwise.
The instrument lamps will dim.
Display illumination
Press knob3.
With key removed or in steering lock 
position0 or1 (
page 29), the display 
is illuminated for a short time.
Coolant temperature gauge
Under normal driving conditions, the cool-
ant temperature may rise to 248°F 
(120°C). The coolant temperature may 
climb to the red marking:
at high outside temperatures
during stop-and-go city traffic
when driving on hilly terrain
The engine should not be operated with 
the coolant temperature in the red zone. 
Doing so may cause serious engine dam-
age which is not covered by the 
Mercedes-Benz Limited Warranty. 
     
        
        Page 131 of 304

131 Controls in detail
Retractable hardtop
Opening the retractable hardtopRetractable hardtop switchBefore pulling on the retractable hardtop 
switch, you must ensure that:
the parking brake is engaged 
(page 47)
the luggage cover is closed, see lug-
gage cover
the trunk lid is closed
the ignition is switched on (key in steer-
ing lock position2)
Pull the retractable hardtop switch as 
indicated by the arrow until the retract-
able hardtop is completely lowered into 
its trunk storage compartment and the 
indicator lamp in the retractable hard-
top switch goes out.
If you continuously pull on the retract-
able hardtop switch or release and pull 
it again within approximately 
30 seconds, the door windows will 
close.
However, the door windows can also be 
closed/opened later on.
Pull on the retractable hardtop switch 
twice forward/backward. Pull on the 
switch only briefly the first time. The 
second time, pull on the switch until 
the door windows have reached the de-
sired height.
The rear quarter windows cannot be raised 
with the retractable hardtop lowered.
iFor safety reasons, the retractable 
hardtop cannot be opened while driv-
ing.
Be sure that the retractable hardtop is 
dry before you open it. Otherwise water 
may enter the trunk interior.!If the indicator lamp in the retractable 
hardtop switch blinks slowly, a mal-
function has occurred in the system.
If the indicator lamp in the retractable 
hardtop switch blinks rapidly, the trunk 
lid and/or luggage cover may be open 
and need to be closed.Warning!
G
To prevent possible accidents, drive the ve-
hicle only with the retractable hardtop either 
completely closed and locked, or fully low-
ered into its storage compartment.