Page 117 of 474

115 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 (
page 35) 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 129).  
     
        
        Page 124 of 474

122 Controls in detailSeats
The rear power head restraint will fold 
upright.
Press switch down in direction of 
arrow1.
The rear power head restraint will fold 
backward.
Head restraint tilt
You can adjust the angle manually by pull-
ing or pushing the head restraints by hand.
Lumbar support
You can adjust the contour of the seat’s 
lumbar support to best support your spine.
The thumbwheel for the driver’s and front 
passenger seat are located on the inner 
side of the seat.
1Thumbwheel
Switch on ignition (
page 34).
Set the lumbar support between 0 
and 5.
Multicontour backrest*
The multicontour backrest has inflatable 
air cushions built into the seat backrest to 
provide additional lumbar and side sup-
port.
The seat backrest cushion height and cur-
vature can be continuously varied with 
switches on the right side of the seat after 
turning the SmartKey in the starter switch 
to position2 or pressing the KEYLESS-GO* 
start/stop button (
page 35) twice.
Warning!
G
For safety reasons, always drive with the 
rear head restraints in the upright position 
when the rear seats are occupied.
Keep the area around head restraints clear 
of articles (e.g. clothing) to not obstruct the 
folding operation of the head restraints.iAdjust the head restraint in such a way 
that it is as close to the head as possi-
ble.
 
     
        
        Page 130 of 474

128 Controls in detailMemory function
You can store up to three different settings 
per SmartKey or SmartKey with 
KEYLESS-GO*.
The following settings are saved for each 
stored position the driver's door: 
Driver’s seat and backrest position
Settings for the multicontour seat*
Steering wheel position
Exterior rear view mirror position
Automatic climate control
These key-dependent memory settings 
can be deactivated if desired. For informa-
tion on key-dependent memory settings, 
see “Setting key-dependency” 
(
page 169).The following settings are not key-depen-
dent. They are stored when using the but-
tons on the front passenger door:
Front passenger seat, backrest and 
head restraint position, and settings for 
multicontour seat*
!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 air bags (
page 61) for 
proper seat positioning.
In addition, adjust the steering wheel to 
ensure adequate control, reach, opera-
tion and comfort. Both the inside and 
outside rear view mirrors should be ad-
justed 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 
Standards 213 and 225 and Canadian 
Motor Vehicle Safety Standards 213 
and 210.2.
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 131 of 474

129 Controls in detail
Memory function
The memory button and stored position 
switch are located on the door.
1 Memory position buttons
2Memory button
Switch on ignition (
page 34).
or
Open the respective door and insert 
the SmartKey in the starter switch.
Storing positions into memory
Adjust the seats, steering wheel and 
exterior rear view mirrors to the de-
sired position (
page 37).
Press memory button2.
Release memory button2 and push 
one of the position buttons1 within 
three seconds.
All the settings are stored with the se-
lected position.
Recalling positions from memory
Press and hold one of the position 
buttons1 until the seat, steering 
wheel and exterior rear view mirrors 
have fully moved to the stored posi-
tions.iReleasing the button immediately 
stops movement to the stored posi-
tions.Warning!
G
Do not operate the power seats using the 
memory button if the seat backrest is in an 
excessively reclined position. Doing so 
could cause damage to front or rear seats.
First move seat backrest to an upright posi-
tion. 
     
        
        Page 132 of 474

130 Controls in detailMemory functionStoring exterior rear view mirror park-ing position
For easier parking, you can adjust the pas-
senger-side exterior rear view mirror so 
that you can see the right rear wheel as 
soon as you engage reverse gearR.
For information on activating the parking 
position, see “Setting parking position for 
exterior rear view mirror” (
page 171).
1Passenger-side exterior rear view mir-
ror button
2Adjustment button
MMemory button
Stop the vehicle.
Switch on ignition (
page 34).
Press button1.
The passenger-side exterior rear view 
mirror is selected.
Adjust the passenger-side exterior rear 
view mirror with button2 so that you 
see the rear wheel and the road curb.
Press memory button M.
Within three seconds, press bottom of 
adjustment button2 on ƒ.
The parking position is stored if the 
mirror does not move.
iYou can store a parking position for the 
passenger-side exterior rear view mir-
ror for each SmartKey or SmartKey 
with KEYLESS-GO*.
iIf the mirror does move, repeat the 
above steps. After the setting is stored, 
you can move the mirror again. 
     
        
        Page 133 of 474

131 Controls in detail
Lighting
Lighting
For information on how to switch on the 
headlamps and use the turn signals, see 
“Switching on headlamps” (
page 50) 
and “Turn signals” (
page 51).
Exterior lamp switch
The exterior lamp switch is located on the 
dashboard to the left of the steering wheel.
M
Off
Daytime running lamp mode 
(page 165)
U
Automatic headlamp mode
Daytime running lamp mode 
(page 165)
C
Parking lamps (also side marker 
lamps, tail lamps, license plate 
lamps, instrument panel lamps)
B
Low beam headlamps (or high 
beam headlamps when the combi-
nation switch is pushed forward) 
and parking lamps
ˆ
Standing lamps, right (turn left one 
stop)
‚
Standing lamps, left (turn left two 
stops)
C
Indicator lamp for parking lamps
‡
Indicator lamp for front fog lamps
†
Indicator lamp for rear fog lamp
iIf you drive in countries where vehicles 
drive on the other side of the road than 
the country in which the vehicle is reg-
istered, you must have the headlamps 
modified for symmetrical low beams. 
Relevant information can be obtained 
at your authorized Mercedes-Benz Cen-
ter. 
     
        
        Page 143 of 474

141 Controls in detail
Instrument cluster
Coolant temperature gauge
During severe operating conditions, 
e.g. stop-and-go traffic, the coolant tem-
perature may rise close to 248°F (120°C), 
i.e. close to the red zone of the tempera-
ture gauge.
The engine should not be operated with 
the coolant temperature above 248°F 
(120°C), i.e. in the red zone of the coolant 
temperature gauge. Doing so may cause 
serious engine damage which is not cov-
ered by the Mercedes-Benz Limited War-
ranty.
Trip odometer
Make sure you are viewing the trip 
odometer display.
If it is not displayed, press the è or 
ÿ button on the multifunction 
steering wheel repeatedly until the trip 
odometer appears (
page 143).
Press and hold reset buttonJ 
(page 140) until the trip odometer is 
reset.
Warning!
G
Driving when your engine is badly over-
heated can cause some fluids which 
may have leaked into the engine com-
partment to catch fire. You could be se-
riously burned.
Steam from an overheated engine can 
cause serious burns and can occur just 
by opening the hood. Stay away from 
the engine if you see or hear steam com-
ing from it.
Turn off the engine, get out of the vehicle 
and do not stand near the vehicle until the 
engine has cooled down.
iExcessive coolant temperature triggers 
a warning in the multifunction display 
(page 359). 
     
        
        Page 145 of 474

143 Controls in detail
Control system
Control system
The control system is activated as soon as 
the SmartKey in the starter switch is 
turned to position1 or as soon as the 
KEYLESS-GO* start/stop button 
(page 35) is in position1. The control 
system enables you to:
call up information about your vehicle
change vehicle settings
For example, you can use the control sys-
tem to find out when your vehicle is next 
due for service, to set the language for 
messages in the instrument cluster dis-
play, and much more.
The control system relays information to 
the multifunction display.
Multifunction display
1Trip odometer
2Main odometer
iThe displays for the audio systems (ra-
dio, CD player) will appear in English, 
regardless of the language selected.
Warning!
G
A driver’s attention to the road and traffic 
conditions must always be his/her primary 
focus when driving.
For your safety and the safety of others, se-
lecting features through the multifunction 
steering wheel should only be done by the 
driver when traffic and road conditions per-
mit it to be done safely.
Bear in mind that at a speed of just 30 mph 
(approximately 50 km/h), your vehicle is 
covering a distance of 44 feet (approximate-
ly 14 m) every second.