Page 425 of 521
424 Practical hintsUnlocking/locking in an emergencyUnlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or SmartKey with
KEYLESS-GO*, open the driver’s door and
the tailgate using the mechanical key. Removing the mechanical key
1Mechanical key locking tab
2Mechanical key
Move locking tab1 in direction of ar-
row.
Slide mechanical key2 out of the
housing.Unlocking the driver’s door
1Unlocking
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key counterclock-
wise to position1.
The driver’s door is unlocked.
iUnlocking your vehicle with the me-
chanical key will trigger the anti-theft
alarm system. To cancel the alarm, do
one of the following:
Press button Œ or ‹ on the
SmartKey.
Insert the SmartKey in the starter
switch.
Vehicles with KEYLESS-GO*
Pull the outside door handle.
Press the KEYLESS-GO* start/stop
button.
Page 426 of 521
425 Practical hints
Unlocking/locking in an emergency
Locking the vehicle
If you are unable to lock the vehicle with
the SmartKey or SmartKey with
KEYLESS-GO*, do the following:
Close the passenger door, the rear
doors and the tailgate.
Press the central locking switch in the
center console (
page 128).
Check to see whether the locking
knobs on the doors have moved down.
If necessary, push them down
manually.
Except for the driver’s door, the vehicle
should now be locked.1Locking
Remove the mechanical key out of the
SmartKey (
page 424).
Insert the mechanical key into the
driver’s door lock until it stops.
Turn the mechanical key clockwise to
position1.
The driver’s door is locked.
Fuel filler flap emergency release
1Release knob
Remove right-side tail trim.
Turn release knob1 clockwise (ar-
row).
The fuel filler flap can know be opened.
Page 461 of 521

460 Practical hintsTowing the vehicle
iTo signal turns while being towed with
the hazard warning flasher in use, turn
SmartKey in starter switch to
position2 and activate the combina-
tion switch for the left or right turn sig-
nal in the usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, or KEYLESS-GO*
start/stop button in position2, the ve-
hicle doors lock if the left front wheel
as well as the right rear wheel are turn-
ing at vehicle speeds of approximately
9mph (15km/h) or more.
Switch off the tow-away alarm
(page 103).
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 127).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to the vehicle chas-
sis, frame or suspension parts.
iThe gear selector lever will remain
locked in positionP and the SmartKey
will not turn in the starter switch if the
battery is disconnected or discharged.
For more information, see “Battery”
(page 452) and “Jump starting”
(page 456).
For information on manual unlocking of
the gear selector lever, see
(page 426).
Page 464 of 521
463 Practical hintsFuses
Main fuse box in passenger compartment
The main fuse box is located behind a cov-
er in the dashboard on the driver’s side.
1Recess in the cover
2CoverOpening
Open the driver’s door.
Insert flat, blunt object as a lever in
recess1 on the edge of cover2.
Loosen cover2 from the dashboard
using lever.
Using your hands, pull cover2 in di-
rection of arrow and remove.
Closing
Hook cover2 into the opening at the
front.
Press cover2 back on until it engag-
es.
Fuse box in cargo compartment
The fuse box is located behind the
left-hand trim panel in the cargo compart-
ment.
1Trim panel
2Button for unlocking trim panel
Opening trim panel
Press button2.
Fold down trim panel1.
Closing trim panel
Fold up trim panel1.
!Do not use sharp objects such as a
screw driver to open the fuse box
cover2 in the dashboard, as this
could damage it.
Page 492 of 521

491 Technical terms
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Accessory weight
(
page 350)
ADS
(Adaptive D
amping S
ystem)
Automatically adapts the optimum sus-
pension damping to prevailing driving
conditions.
Air pressure
(
page 350)
Airmatic DC*
(Airmatic D
ual C
ontrol)
Automatically selects the optimum sus-
pension tuning and ride height for your
vehicle. Airmatic consists of two com-
ponents:
Adaptive Damping System
Vehicle level controlAlignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.
Aspect ratio
(
page 350)
Bar
(page 350)
BAS
(Brake A
ssist S
ystem)
System for potentially reducing braking
distances in emergency braking situa-
tions. The system is activated when it
senses an emergency based on how
fast the brake is applied.
Bead
(
page 350)
Bi-Xenon headlamps*
Headlamps which use an electric arc as
a light source and produce a more in-
tense light than filament headlamps.
Bi-Xenon headlamps produce low
beam and high beam.CAC
(C
ustomer A
ssistance C
enter)
Mercedes-Benz customer service cen-
ter which can help you with any ques-
tions about your vehicle and provide
assistance in the event of a break-
down.
CAN system
(C
ontroller A
rea N
etwork)
Data bus network serving to control ve-
hicle functions such as door locking or
windshield wiping.
Cockpit
All instruments, switches, buttons and
indicator/warning lamps in the passen-
ger compartment needed for vehicle
operation and monitoring.
Cold tire inflation pressure
(
page 350)
Page 494 of 521

493 Technical terms
FSS PLUS (Canada vehicles)
(F
lexible S
ervice S
ystem PLUS)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. FSS evaluates en-
gine temperature, oil level, vehicle
speed, engine speed, distance driven
and the time elapsed since your last
service, calculates other maintenance
service work required, and calls for the
next maintenance service accordingly.
GAWR
(G
ross A
xle W
eight R
ating)
(
page 351)
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the selector lever.GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs DVD digital maps for
navigation.
GVW
(G
ross V
ehicle W
eight)
(
page 351)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 351)
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer
and fuel gauge.
KEYLESS-GO*
System for entering and operating the
vehicle without the use of a SmartKey.Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible gear.
This very quickly accelerates the vehi-
cle and should not be used for normal
acceleration needs.
Kilopascal (kPa)
(
page 351)
Locking knob
Knob on the door which indicates
whether the door is locked or un-
locked. Pushing the locking knob down
on an individual door from inside will
lock that door.
Page 501 of 521

500 IndexCoolant
Anticorrosion/antifreeze mixing ratio
and quantity 489
Capacities 483
Checking coolant level 321
Messages in display 400, 401, 402
Temperature 311
Temperature indicator 152
Warning lamp 376
Cruise control 239, 492
Message in display 386
Cup holders 274
Cleaning 367
Curb weight 350
Customer Assistance Center see CAC
D
Date display, setting 171, 172
Daytime running lamp mode 144
Setting 172, 173
Deep water see Standing water
Defogging windshield 209, 224
Defrosting, Front 209, 223
Defrosting, Rear 200
Delayed shut-off
Exterior lamps 174
Interior lighting 175Department of Transportation see DOT
Diesel see Fuel
Difficulties
While driving 58
With starting 51
Digital clock see Clock
Digital speedometer 161
Dimensions, vehicle 480
Direction of rotation (tires) 327
Displays
Digital speedometer 161
Distronic* 245
Maintenance service indicator 358
Messages in display 395
Multifunction display 155
Outside temperature 155, 169
Symbol messages 395
Text messages 385
Vehicle status message memory 165
Vehicle system settings, Control
system 155
Distance to empty (Range), Trip
computer 180Distronic* 243, 492
Activating/deactivating 248
Cleaning system sensor 366
Control system 163
Distance warning function 252
Driving hints 253
Menu 247
Messages in display 386
Sensor cover 366
Warning and indicator lamps 246
Door
Entry lamps 150
Locking/unlocking, SmartKey 34,
108
Locking/unlocking, SmartKey with
KEYLESS-GO* 35, 114
Message in display 403
Opening from inside/outside 119
Remote door unlock (Tele Aid) 289
Unlocking, Mechanical key 424
Door control panel 32
Door handle 32
DOT 351, 492
Drinking and driving 301
Page 502 of 521

501 Index
Drive-Dynamic seat* with multicontour
features 133
Massage function 134
Driving
Abroad 309
Hydroplaning 305
In winter 307
Instructions 47, 301
Problems 58
Safety systems 91
Through standing water 308
With Distronic* 253
Driving safety systems
4MATIC
ABS 91
BAS 93
Electrohydraulic brake system 96
ESP
®
93, 492
E
Easy-entry/exit feature 43, 177
Electrical fuses see Fuses
Electrical system, Technical data 479Electrohydraulic brake system 96, 492
Activating/deactivating 97
Driving hints 99
Messages in display 397, 398
Self-check 98
Warning lamp 96
Electronic Stability Program see
ESP
®
93, 492
Emergency calls
Tele Aid calls 284
Emergency operation (Limp Home
Mode) 196
Emergency operations
Fuel filler flap 425
Gear selector lever, Unlocking 426
Locking/unlocking the vehicle 424
Remote door unlock 289
Tilt/sliding sunroof*, Manual
operation 427
Emergency tensioning device see ETDEmergency, In case of
Battery, Jump starting 456
First aid kit 419
Flat tire, changing 440
Fuses
Hazard warning flasher 147
Instrument cluster, Indicator
lamps 372, 373, 374, 375, 376,
377, 378, 380
Roadside Assistance 12
Towing the vehicle 458
Emission control 310
Emission control information label 468
Emission control system warranties 10
Emission control vacuum line routing dia-
gram label 468