
320 Practical hintsTowing the vehicle
iTo signal turns while being towed with
the hazard warning flasher in use, turn
key in starter switch to position2 and
activate the combination switch for the
left or right turn signal 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 key in starter switch
position2, or KEYLESS-GO* start/stop
button in position2, the vehicle doors
lock if the left front wheel as well as the
right rear wheel are turning at vehicle
speeds of approx. 9 mph (15 km / h) or
more.
Switch off the tow-away alarm
(page 78).
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 139).
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 selector lever will remain locked in
positionP and the key will not turn in
the starter switch if the battery is dis-
connected or discharged. See notes on
the battery (
page 313) or on jump
starting (
page 316).

324 Practical hintsFusesFuse boxes in engine compartment
There are two fuse boxes located in the en-
gine compartment on both the driver’s and
front passenger side in front of the firewall
(dividing wall between engine compart-
ment and passenger compartment).
1Fuse box cover, driver’s side
2Slide1Fuse box cover, front passenger side
2Slide
Opening
Push both slides2 to the
Œ
symbol.
Remove cover1.
Closing
Replace cover1 and press it down by
hand.
Push both slides 2 to the
‹
symbol.
Emergency engine shut-down
If the engine can no longer be stopped us-
ing the SmartKey or the KEYLESS-GO*
start/stop button, the engine can be
turned off by withdrawing two fuses.
For easy removal of fuses, use the fuse ex-
tractor (supplied with vehicle tool kit) to
pull out the fuses marked on the fuse chart
as “ENGINE EMERGENCY STOP”.
The fuse chart is also located in the vehicle
tool kit (
page 295).
!The cover must fit properly and the
slide must be positioned at the
‹
symbol, as moisture or dirt may impair
the functionality of the fuses.

347 Technical terms
ABC
(A
ctive B
ody C
ontrol)
Active, computer-controlled system
that hydraulically adjusts the suspen-
sion at all four wheels in response to
various driving situations.
ABS
(A
ntilock B
rake S
ystem)
Prevents the wheels from locking up
during braking so that the vehicle can
continue to be steered.
Alignment bolt
Metal pin with thread. The centering
pin is an aid used when changing a tire
to align the wheel with the wheel hub.BabySmart
TM
airbag deactivation
system
This system detects if a special system
compatible child restraint seat is in-
stalled on the front passenger seat. The
system will automatically deactivate
the passenger front airbag when such a
seat is properly installed (PASSENGER
AIRBAG OFF indicator lamp in the cen-
ter console lights up). See your autho-
rized Mercedes-Benz Center for
availability.
BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger side airbag if a BabySmart
TM
compatible child seat is installed.
BAS
(B
rake 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.Bi-Xenon headlamps
Headlamps which use an electric arc as
the 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.

348 Technical termsCOMAND
(C
ockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and navi-
gation, as well as for other optional
equipment (CD changer, telephone,
etc.).
Control system
The control system is used to call up
vehicle information and to change
component settings. Information and
messages appear in the multifunction
display. The driver uses the buttons on
the multifunction steering wheel to
navigate through the system and to ad-
just settings.
Cruise control
A driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.Distronic*
A driving convenience cruise control
system which helps the driver maintain
a pre-selected speed:
If there is no vehicle directly ahead,
the system operates in the same
way as conventional ->cruise con-
trol.
If a slower moving vehicle is ahead,
Distronic will reduce your vehicle
speed to the extent permitted by re-
duced throttle and up to 20% brak-
ing power to maintain the preset
minimum following distance.
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP
(E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.

349 Technical terms
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRS
FSS
(F
lexible S
ervice S
ystem)
Service indicator in the multifunction
display that informs the driver when
the next vehicle maintenance service is
due.
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 CD digital maps for
navigation.
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
engine temperature and fuel gauge.
KEYLESS-GO*
System for entering and operating the
vehicle without the use of a key.
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.Line of fall
The direct line that an object moves
downhill when influenced by the force
of gravity alone.
Lock button
Button on the door which indicates
whether the door is locked or un-
locked. Pushing the lock button down
on an individual door from inside will
lock that door.
Memory function
Used to store three individual seat,
steering wheel and mirror positions for
each key or, if so equipped, KEY-
LESS-GO* feature.
Menu
The control system displays are ar-
ranged in menus. Each menu contains
a number of commands for particular
systems. In the Audio menu, for exam-
ple, you will find the commands
SELECT
RADIO STATION
or OPERATE CD player
.
Using commands you can directly
change the settings for your vehicle.

350 Technical termsMON
(M
otor O
ctane N
umber)
The Motor Octane Number for gasoline
as determined by a standardized meth-
od. It is an indication of a gasoline's
ability to resist undesired detonation
(knocking). The average of both the
MON (Motor Octane Number) and
->RON (Research Octane Number) is
posted at the pump, also known as AN-
TI-KNOCK INDEX.
Multifunction display
Display field in the speedometer used
to present information provided by the
control system.
Multifunction steering wheel
Steering wheel with buttons for operat-
ing the control system.
Overspeed range
Engine speeds within the red marking
of the tachometer dial. Avoid this en-
gine speed range, as it may result in se-
rious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.Parktronic*
System which uses visual and acoustic
signals to assist the driver during park-
ing maneuvers.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.
Power train
Collective term designating all compo-
nents used to generate and transmit
motive power to the drive axles, includ-
ing:
Engine
Clutch/torque converter
Transmission
Transfer case
Drive shaft
Differential
Axle shafts/axlesProgram mode selector switch
Used to switch the automatic transmis-
sion between sport operationS and
comfort operationC.
CL 55 AMG with steering wheel gear-
shift control and manual shift program:
in addition toS andC (see above), you
can use theM for manual operation.
Remote Vehicle Diagnostics
Transmission of vehicle data and cur-
rent location to the Mercedes-Benz
Customer Assistance Center for sub-
scribers to Tele Aid service.
REST
(Residual engine heat utilization)
Feature that uses the engine heat
stored in the coolant to heat the vehi-
cle interior for a short time after the en-
gine has been turned off.
Restraint systems
Seat belts, belt tensioners, airbags and
child restraint systems. As indepen-
dent systems, their protective func-
tions complement one another.

353 Index
A
ABC 190, 347
Messages in display 271
Setting vehicle level 191
ABS 23, 71, 347
ABS control 72
Malfunction indicator lamp 265
Messages in display 272
Warning lamp 265
Accelerator position, automatic
transmission 148
Accident
In case of 48
Activating
Air conditioner (cooling) 166
Air recirculation mode 163
Anti-theft alarm system 77
Central locking (control system) 139
Charcoal filter 164
Distance warning function* 188
Distronic* 184
Easy-entry/exit feature 140
ESP 75
Exterior headlamps 46
Exterior lamps 109Exterior rear view mirror parking
position 152
Front and rear fog lamp 109
Hazard warning flasher 111
Headlamps 46
High beams 111
Ignition 31
Ignition with KEYLESS-GO* start/stop
button 33
Immobilizer 51, 76
Rear window defroster 165
Residual heat 167
Seat heater 103, 104
Seat ventilation* 102
Tow-away alarm 78
Windshield wipers 47
Activating steering wheel gearshift
control 149
Downshifting 150
Upshifting 150
Adding
Coolant 243
Engine oil 241
Additional turn signals 302Adjustable air vents, rear passenger
compartment 168
Adjusting 34
Air distribution 161
Air volume 162
Backrest tilt 36
Exterior rear view mirror 38
Folding forward front seat
backrests 100
Head restraint height 36
Head restraint tilt 36
Inside rear view mirror 38
Instrument cluster illumination 114
Lumbar support 96
Mirrors 38
Multicontour seat* 99
Seat cushion depth 36, 99
Seat cushion tilt 36
Seat fore and aft adjustment 36
Seat height 36
Seat in the lumbar region 99
Seat in the shoulder region 99
Seats 34
Steering column height 38
Steering column length 38
Steering wheel 37

362 IndexGear selector lever
Cleaning 260
Position 146
Gearshift pattern for automatic
transmission 43
Global
Locking 81
Unlocking 81
Global Positioning System (GPS) 349
Glove box 21, 199
Closing 199
Opening 199
Good visibility 151
GPS 210, 349
H
Hand-held transmitter
Programming integrated remote
control 218
Hands-free microphone 27
Hard plastic trim items
Cleaning 260
Hazard warning flasher 111
Switching off 111
Switching on 111
Head restraints 97
Headlamp cleaning system 236Headlamps
Automatic control 109
Bi-Xenon 347
Cleaning 258
Cleaning system 154, 244, 344
Refilling washer fluid 244
Switching off 50
Switching on 46
Headliner
Cleaning 261
Heated steering wheel* 208
Height adjustment
Head restraints 36
Steering wheel 37
Height adjustments
Vehicle level 191
High beam flasher 46, 111
High beam headlamps
Messages in display 286
Replacing bulbs 302
Switching on 111
High mounted brake lamp 303
Hood 237
Closing 238
Message in display 284
Opening 237Hydroplaning 229
I
Identification labels
Certification label 328
Emission control label 328
Engine number 328
Information label, California version
Vacuum line routing for emission
control system 328
VIN (vehicle identification
number) 328
VIN, visible 328
Ignition 31
Immobilizer 76
Activating 76
Deactivating 76
Indicator lamps see Lamps, indicator and
warning
Infant and child restraint systems 63
Installing 67
LATCH child seat mounts 68
Information
About service and warranty 10
Button for Tele Aid 214