Page 96 of 474

94 Controls in detailIn the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. 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 unlocking
For more information on locking and un-
locking, see the Getting started section
(page 34).
SmartKey
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key.
The locking tabs for the mechanical key
portion of the two SmartKeys are a differ-
ent color to help distinguish each Smart-
Key unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.The SmartKey centrally locks and unlocks:
the doors
the trunk lid
the glove box
the storage compartment under the
armrest
the storage compartment in the rear
the fuel filler flap
Page 111 of 474

109 Controls in detail
Locking and unlocking
Closing the trunk
1Handle
Lower trunk lid by firmly pulling on
handle1.
Close trunk lid with hands placed flat
on trunk lid.
Trunk lid emergency release
The emergency release button is located
on the left side of the trunk.
1Emergency release button
Briefly press emergency release
button1.
The trunk unlocks and the trunk lid
opens slightly.
Push up the trunk lid to fully open.
Warning!
G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk lid. Be espe-
cially careful when small children are
around.
Warning!
G
Only drive with the trunk closed. Among oth-
er dangers, such as your view being blocked,
exhaust fumes may enter the vehicle interi-
or.iTo prevent an inadvertent lockout, do
not place the SmartKey in the trunk.
Vehicles with KEYLESS-GO*: To pre-
vent a possible inadvertent lockout, the
trunk lid will open automatically if a
SmartKey with KEYLESS-GO is recog-
nized inside the trunk.
When the hardtop is retracted, it must
be completely lowered in the trunk be-
fore the trunk lid can be closed
(page 235).
Page 116 of 474

114 Controls in detailSeats
When entering the vehicle, with the
easy-entry/exit feature activated, the
steering wheel or, depending on your se-
lection, the steering wheel and driver’s
seat will return to their last set memory po-
sition or a factory-set maximum forward
position when you
close the driver’s door with the ignition
switched on
insert the SmartKey into the starter
switch or press the KEYLESS-GO* start
stop button once with the driver’s door
closed
iIf the current position for the steering
wheel is in the uppermost tilt position,
the steering wheel will no longer be
able to move upward when the
easy-entry/exit feature is activated.
If the current seat position falls into a
factory-set position range and the sys-
tem recognizes the current seat posi-
tion to be rearward enough for easy
entry and exit, the driver’s seat will not
move to the rear when the
easy-entry/exit feature is activated.
iFor safety reasons, the driver’s seat will
not return to its last set position with
the easy-entry/exit feature activated if
the system recognizes the last set posi-
tion as an extreme forward position. In-
stead, the driver’s seat will remain at or
move to a factory-set maximum for-
ward position. To again fully return the
driver’s seat to your last set position or
to memory position, adjust the seat to
the desired position or press and hold
the respective memory position button
(page 120).
Page 122 of 474

120 Controls in detailMemory function
With the memory switch you can store up
to three different settings per SmartKey or
SmartKey with KEYLESS-GO*.
The following settings are saved for each
stored position:
Driver’s seat and backrest position
Steering wheel position
Driver’s side exterior rear view mirror
position
Passenger side exterior rear view mir-
ror position
These key-dependent memory settings
can be deactivated if desired
(
page 158).The memory switch is located on the door.
M Memory button
1, 2, 3 Stored positions
Switch on the ignition (
page 36).
or
Open the respective door.
!Prior to operating the vehicle, the driv-
er should check and adjust the seat
height, seat position fore and aft, and
seat backrest angle if necessary, to en-
sure adequate control, reach and com-
fort. The head restraint should also be
adjusted for proper height. See also the
section on airbags (
page 63) for
proper seat positioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, opera-
tion and comfort. Both the interior and
exterior rear view mirrors should be
adjusted for adequate rear vision.
Fasten seat belts. Infants and small
children should be seated in a properly
secured restraint system that complies
with U.S. Federal Motor Vehicle Safety
Standard 213 and Canadian Motor Ve-
hicle Safety Standard 213.
Warning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.
Page 126 of 474

124 Controls in detailLightingManual headlamp mode
The low beam headlamps and parking
lamps can be switched on or off with the
exterior lamp switch.Automatic headlamp mode
The following lamps switch on and off au-
tomatically depending on the brightness of
the ambient light:
Low beam headlamps
Tail lamps
Parking lamps
License plate lamps
Side marker lamps
iWith the SmartKey removed from the
starter switch or the engine turned off
with KEYLESS-GO* and the driver’s
door open, a warning sounds if the
parking lamps or the low beam head-
lamps are switched on.
The message $
Turn off lamps
appears in the multifunction display.
iWith the daytime running lamp mode
activated (mandatory in Canada) and
the engine running, the low beam head-
lamps cannot be switched off manual-
ly.
To activate the daytime running lamp
mode, see “Setting daytime running
lamp mode (USA only)” (
page 152).
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient light, for example light from
oncoming traffic.
the headlamps will not be automatically
switched on under foggy conditions.
To minimize risk to you and to others, acti-
vate headlamps by turning exterior lamp
switch to B when driving or when traffic
and / or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from position U to B with the
vehicle at a standstill. Switching from U
to B will briefly switch off the head-
lamps. Doing so while driving in low ambient
lighting conditions may result in an acci-
dent.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle’s lights at all
times.
Page 128 of 474

126 Controls in detailLightingCanada only:
The daytime running lamp mode is manda-
tory and therefore in a constant mode.
When the engine is running and you shift
from a driving position to positionN orP,
the low beam headlamps will switch off
with a three-minute delay.
When the engine is running and you
turn the exterior lamp switch to posi-
tion C, the parking lamps switch on
additionally
turn the exterior lamp switch to posi-
tion B, the manual headlamp mode
has priority over the daytime running
lamp mode
The corresponding exterior lamps
switch on (
page 123).USA only:
By default, the daytime running lamp mode
is deactivated. Activate the daytime run-
ning lamp mode using the control system,
see “Setting daytime running lamp mode
(USA only)” (
page 152).
The high beam headlamps can also be ac-
tivated when driving with the daytime run-
ning lamp mode activated and the exterior
lamp switch in positionM.
When the engine is running and you turn
the exterior lamp switch to positionC
or B, the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on (
page 123).Locator lighting and night security
illumination
Locator lighting and night security illumi-
nation are described in the control system
section, see “Setting locator lighting”
(
page 153) and “Setting night security il-
lumination” (
page 154).
Page 135 of 474

133 Controls in detail
Instrument cluster
Outside temperature indicator
The outside temperature is displayed in
the right multifunction display
(page 24). For information on how to se-
lect the unit of the displayed temperature,
i.e. degrees Celsius (°C) or degrees Fahr-
enheit (°F), see “Selecting temperature
display mode” (
page 148).The temperature sensor is located in the
front bumper area. Due to its location, the
sensor can be affected by road or engine
heat during idling or slow driving. There-
fore, the accuracy of the displayed temper-
ature can only be verified by comparison to
a thermometer placed next the sensor, not
by comparison to external displays, e.g.
bank signs, etc.
When moving the vehicle into colder ambi-
ent temperatures (e.g. when leaving your
garage), you will notice a delay before the
lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate tem-
perature indications caused by heat
radiated from the engine during idling or
slow driving.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
Page 145 of 474

143 Controls in detail
Control system
Distronic activated
When Distronic is activated the DTR sym-
bol and the set speed are seen in the left
display.
1Symbol for activated Distronic
2Set speed
Vehicle status message memory menu
Use the vehicle status message memory
menu to scan malfunction and warning
messages that may be stored in the sys-
tem. Such messages appear in the multi-
function display and are based on
conditions or system status the vehicle’s
system has recorded.
Press button è or ÿ repeatedly
until the vehicle status message mem-
ory appears in the multifunction dis-
play.
No vehicle status messages
If no conditions have been recorded, the
message in the right display is:
Malfunction memory, no malfunctions
.
Vehicle status messages have been
recorded
If conditions have occurred causing status
messages to be recorded, the number of
messages appears in the right multifunc-
tion display:
1Number of recorded status messages
Warning!
G
Malfunction and warning messages are only
indicated for certain systems and are inten-
tionally not very detailed. The malfunction
and warning messages are simply a remind-
er with respect to the operation of certain
systems and do not replace the owner’s
and/or driver’s responsibility to maintain
the vehicle’s operating safety by having all
required maintenance and safety checks
performed on the vehicle and by bringing
the vehicle to an authorized Mercedes-Benz
Center to address the malfunction and
warning messages (
page 335).