Page 6 of 458

ContentsDriving safety systems ......................... 80
ABS ................................................ 80
BAS ................................................ 81
ESP ................................................. 82
Anti-theft systems................................ 85
Immobilizer..................................... 85
Anti-theft alarm system .................. 85
Tow-away alarm ............................. 87Controls in detail............................... 89
Locking and unlocking ......................... 90
SmartKey ....................................... 90
SmartKey with KEYLESS-GO*......... 94
Opening the doors
from the inside ............................. 100
Opening the trunk ........................ 101
Closing the trunk .......................... 103
Trunk lid emergency release ........ 109
Power closing assist
for doors and trunk lid .................. 110
Automatic central locking ............ 110
Locking and unlocking
from the inside ............................. 111Seats ................................................. 112
Easy-entry/exit feature ................ 112
Removing and installing
front seat head restraints............. 114
Rear seat head restraints ............. 115
Lumbar support............................ 117
Multicontour backrest* ................ 117
Seat heating ................................. 119
Seat ventilation* .......................... 121
Memory function ............................... 122
Storing positions into memory ..... 123
Recalling positions from memory . 123
Storing exterior rear view
mirror parking position................. 124
Lighting.............................................. 125
Exterior lamp switch..................... 125
Combination switch ..................... 129
Hazard warning flasher ................ 130
Interior lighting............................. 131
Courtesy lighting .......................... 133
Door entry lamps ......................... 133
Trunk lighting ............................... 133Instrument cluster ............................. 134
Instrument cluster illumination .... 134
Coolant temperature gauge ......... 135
Trip odometer .............................. 135
Tachometer .................................. 136
Outside temperature indicator ..... 136
Clock............................................ 136
Control system .................................. 137
Multifunction display.................... 137
Multifunction steering wheel........ 138
Menus .......................................... 140
Standard display menu ................ 142
AUDIO menu ................................ 142
CD changer operating mode ........ 145
TEL menu* ................................... 147
NAVI menu ................................... 149
Distronic* menu .......................... 150
Trip computer menu..................... 151
Vehicle status message
memory menu .............................. 153
Settings menu .............................. 154
Page 32 of 458
30 At a glanceDoor control panel
Item
Page
1
Door handle
100
2
Memory function (for stor-
ing seat, exterior mirror
and steering wheel set-
tings)
122
3
Seat heating
119
Seat ventilation*
121
4
Seat adjustment
37
Item
Page
5
Exterior mirror adjustment
43,
179
6
Switches for opening/clos-
ing front door windows
198
7
Override switch for rear
passenger compartment
78
8
Switches for opening/clos-
ing rear windows
198
9
Remote trunk lid switch
102
Page 121 of 458

119 Controls in detailSeats
Seat heating
Vehicles without seat ventilation*
The switch is located on the door.
1Normal heating
2Rapid heating
Switch on ignition (
page 34).
Switching on seat heating
Press switch1.
A red indicator lamp above the switch
comes on. Switching off seat heating
Press switch1 again.
Switching on rapid seat heating
Press switch2.
Both red indicator lamps above the
switch come on. Switching off rapid seat heating
Press switch2 again.
iThe seat heating will be automatically
switched off after approximately
30 minutes. iThe system switches over to normal
heating mode after approximately
five minutes. Only the right-hand indi-
cator lamp remains lit.
!If one or both of the lamps on the seat
heater switch are flashing, there is in-
sufficient voltage available since too
many electrical consumers are turned
on. The seat heating switches off auto-
matically.
The seat heater will switch back on
again automatically as soon as suffi-
cient voltage is available.
Page 122 of 458

120 Controls in detailSeatsVehicles with seat ventilation*
The switch is located on the door. The red
indicator lamps on the switch show the
heating level selected:
1Seat heating switch
Switch on ignition (
page 34).
Switching on seat heating
Press switch1 twice.
A red indicator lamp above the switch
comes on.
Switching off seat heating
Press switch1 again.
Switching on rapid seat heating
Press switch1 once.
Both indicator lamps above the switch
come on. Switching off rapid seat heating
Press switch1 twice.
Leveloff
No indicator lamp on
1
One indicator lamp on
2
Two indicator lamps on
iThe seat heating will be automatically
switched off after approximately
30 minutes.
iThe system switches over to normal
heating mode after approximately
five minutes. Only the right-hand indi-
cator lamp remains lit. !If one or both of the lamps on the seat
heating switch are flashing, there is in-
sufficient voltage available since too
many electrical consumers are turned
on. The seat heating switches off auto-
matically.
The seat heating will switch back on
again automatically as soon as suffi-
cient voltage is available.
Page 199 of 458

197 Controls in detail
Automatic climate control
Switching ventilation on
Open the storage compartment in front
of the armrest, see “Storage compart-
ment below the front armrest”
(page 234)
Push upper portion of switch.
Switching ventilation off
Open the storage compartment in front
of the armrest, see “Storage compart-
ment below the front armrest”
(page 234)
Push lower portion of switch.Rear passenger compartment adjust-
able air vents
1Left center air vent, adjustable
2Right center air vent adjustable
3Thumbwheel for center air vents with
adjustable booster blowerTo open center air vents and to adjust the
booster blower:
Turn thumbwheel3.
!Do not obstruct the air vent in the stor-
age compartment.iThe compartment can get very warm
due to its confined space. When storing
heat sensitive objects in the compart-
ment, close the air vent while heating
the passenger compartment.
iThe booster blower allows air volume
speed to the rear passenger compart-
ment to be increased at four different
levels.
The temperature at the air vents for
rear passenger compartment1
and2 is the same as at the dashboard
center air vents.
Page 237 of 458
235 Controls in detail
Useful features
Opening storage compartment
Press button1 and lift the armrest.Opening storage tray and telephone
holder*
The tray contains a coin holder.
Press button2 and lift up the armrest.Storage compartment between rear
seats
1Cover
Opening
Slide cover1 rearward.
Closing
Slide cover1 forward.
iThe storage compartment can be heat-
ed or cooled.
The compartment can get very warm
due to its confined space. When storing
heat-sensitive objects in the compart-
ment, close the air vent (
page 196)
while heating the passenger compart-
ment.
!Do not obstruct the air vent in the stor-
age compartment.
!Do not let bank cards, credit cards or
other cards with a magnetic strip come
near the storage tray as a magnet built
into the tray could erase or change the
information on the card.
Page 242 of 458
240 Controls in detailUseful featuresRear seat ashtray
1Latch
Opening ashtray
Pull at top of cover to open ashtray.
Removing ashtray insert
Pull latch1 to disengage ashtray in-
sert and remove it.
Reinstalling the ashtray insert
Install ashtray insert.
Close the ashtray.
Cigarette lighter
1Cigarette lighter
Switch on ignition (
page 34).
Push in cigarette lighter1.
The lighter will pop out automatically
when hot.
Warning!
G
Never touch the heating element or sides of
the lighter; they are extremely hot. Hold the
knob only.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it 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 lighter socket can be used to ac-
commodate electrical accessories up
to a maximum 85 W.
Page 243 of 458
241 Controls in detail
Useful features
Heated steering wheel*
The steering wheel heating warms up the
leather area of the steering wheel.
The stalk with the heated steering wheel
switch is on the lower left-hand side of the
steering wheel.
1Switching on
2Indicator lamp
3Switching offSwitching on
Switch on ignition (
page 34).
All the lamps in the instrument cluster
should come on.
Turn switch at the tip of stalk in direc-
tion of arrow1.
The steering wheel is heated. Indicator
lamp2 comes on.Switching off
Turn switch at the tip of stalk in direc-
tion of arrow3.
The steering wheel heating is turned
off. Indicator lamp2 goes out.iThe steering wheel heating does not
turn off automatically.