Page 24 of 489
23 At a glance
Cockpit
Item
Page
1
Steering wheel gearshift
buttons (CLK 500 only)
178
2
Combination switch
Turn signals
Windshield wipers
High beam
53
53
52
3
Cruise control lever
254
4
Multifunction steering
wheel
26,
144
5
Instrument cluster
24,
140
6
Starter switch
34
7
Front Parktronic* warning
indicator (Canada only)
258
8
Overhead control panel
29
Item
Page
9
Glove box
269
a
Cup holder
273
b
Center console
27, 28
c
Hood lock release
308
d
Horn
e
Steering wheel adjustment
stalk
41
f
Parking brake pedal
50
g
Door control panel
30
h
Parking brake release
50
j
Exterior lamp switch
52,
131
k
Exterior rear view mirror ad-
justment
43
l
Headlamp washer switch*
180
Page 27 of 489
26 At a glanceMultifunction steering wheel
Item
Page
1
Multifunction display
144
Operating control system
144
2
Selecting the submenu or
setting the volume:
Press buttonæup / to increaseçdown / to decrease
3
Telephone*:
Press buttonsto take a call
to dial a call
168
168
tto end a call
to reject an incoming
call
168
Item
Page
4
Menu systems:
Press buttonèfor next menuÿfor previous menu
5
Moving within a menu:
Press buttonjfor next displaykfor previous display
Page 34 of 489

33 Getting started
Unlocking
For more information, see “SmartKey”
(page 98).
Unlocking with KEYLESS-GO*
With the KEYLESS-GO function, you can
lock and unlock the vehicle without using
the remote control buttons on the
SmartKey and start the engine without in-
serting the SmartKey in the starter switch.
Pull an 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 106).
The locking knobs in the doors
move up.
The anti-theft alarm system is dis-
armed.
Enter the vehicle.
For more information, see “SmartKey with
KEYLESS-GO*” (
page 103).
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle.
Unsupervised use of vehicle equipment may
cause an accident and/or serious personal
injury.iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.
iTo unlock the vehicle, the SmartKey
with KEYLESS-GO must be outside the
vehicle, no further than approx. 3 feet
(1 meter) away from the door to be
opened.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.
iOpening a door causes the windows on
that side of the car to open slightly.
They will return to the up position when
the door is closed.
Page 45 of 489

44 Getting startedAdjustingThe buttons are located above the exterior
lamp switch.
1Adjustment button
2Passenger-side exterior rear view
mirror button
3Driver’s side exterior rear view mirror
button
Switch on the ignition (
page 34).
Press button3 for the driver’s side
exterior rear view mirror or button2
for the passenger-side exterior rear
view mirror.
Push adjustment button1 up, down,
left, or right, according to the desired
setting.
For more information, see “Rear view mir-
rors” (
page 180).
!If an exterior rear view mirror was
forcibly pushed forward (hit from the
rear) or forcibly pushed rearward (hit
from the front), reposition it by
applying firm pressure until it snaps
into place. The mirror housing is now
properly positioned and you can adjust
the mirror normally.
iThe memory function (
page 128) lets
you store the setting for the exterior
rear view mirrors together with the set-
tings for the steering wheel and the
driver’s seat position.
iAt low ambient temperatures, the
exterior rear view mirrors will be
heated automatically.
Page 102 of 489

101 Controls in detail
Locking and unlocking
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 6 seconds un-
til battery check lamp5 flashes twice.
The SmartKey will then function as fol-
lows:
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).
The locking knob in the driver’s
door move up.
The anti-theft alarm system is dis-
armed.Global unlocking
Press buttonŒ twice.
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 button‹.
With the trunk and both doors closed:
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 6 seconds un-
til battery check lamp5 flashes twice.!If you can no longer lock or unlock the
vehicle with the SmartKey, then the
batteries in the SmartKey are dis-
charged, the SmartKey is malfunction-
ing or the vehicle battery is drained.
Check the batteries in the
SmartKey (
page 102) and re-
place them if necessary
(
page 409).
Use the mechanical key to unlock
the driver’s door (
page 404) and
the trunk (
page 405).
Use the mechanical key to lock the
driver’s door (
page 405) and the
trunk (
page 119).
Have the vehicle battery and the
battery connections checked
(page 426).
Page 108 of 489

107 Controls in detail
Locking and unlocking
Global locking
Press the lock button on an outside
door handle (
page 60) or the trunk
lid (
page 109).
With the trunk and both doors closed:
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 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 6 seconds un-
til 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 door handle.
All turn signal lamps flash once.
An acoustic signal sounds once (if
equipped and feature activated).
The locking knob in the driver’s
door move up.
The anti-theft alarm system is dis-
armed.Global unlocking
Pull the door handle on the passenger
side.
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 the lock button on an outside
door handle.
With the trunk and both doors closed:
All turn signal lamps flash three
times.
An acoustic signal sounds three
times (if equipped and feature acti-
vated).
Page 109 of 489

108 Controls in detailLocking and unlocking
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 6 seconds un-
til battery check lamp5 flashes twice.Checking the batteries
Press button‹orŒ.
Battery check lamp5 comes on
briefly to indicate that the SmartKey
with KEYLESS-GO batteries are in or-
der.
iYou can also lock the vehicle using the
lock button on the trunk lid
(page 109) or, vehicles with trunk
opening/closing system*,
KEYLESS-GO locking/closing switch
(page 117).
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the batteries in the
SmartKey with KEYLESS-GO are dis-
charged, the SmartKey with
KEYLESS-GO is malfunctioning or the
vehicle battery is drained.
Check the batteries in the
SmartKey with KEYLESS-GO
(page 108) and replace them if
necessary (
page 409).
Use the mechanical key to unlock
the driver’s door (
page 404) and
the trunk (
page 405).
Use the mechanical key to lock the
driver’s door (
page 405) and the
trunk (
page 119).
Have the vehicle battery and the
battery connections checked
(page 426).
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 with KEYLESS-GO batteries
are discharged.
Replace the batteries (
page 409).
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‹orŒ button will lock or
unlock the vehicle accordingly.
Page 112 of 489

111 Controls in detail
Locking and unlocking
Pull on door handle2.
If door was locked, locking knob1 will
move up.
Opening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.71 ft
(1.74 m) is required to open the trunk lid.
Vehicles without KEYLESS-GO*:
The vehicle must be unlocked.
The handle is located in the rear license
plate recess.
1Handle
Pull on handle1.
The trunk opens.
iIf you open a door, the side windows on
that side of the vehicle will lower slight-
ly. The windows close again when you
close the door.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk opening/closing
system*: To stop the opening proce-
dure, press button Š on the Smart-
Key or SmartKey with KEYLESS-GO*.iIf the trunk does not open, it is still
locked separately (
page 119).
iThe trunk can also be opened using
buttonŠ on the SmartKey or
SmartKey with KEYLESS-GO* or from
its inside in an emergency, see “Trunk
emergency release” (
page 118).