488 Technical termsCruise control
Driving convenience system for auto-
matically maintaining the vehicle speed
set by the driver.
Curb weight
(
page 355)
DOT
(Department O
f Transportation)
(
page 355)
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
®(Electronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
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 (Canada vehicles)
(F
lexible S
ervice S
ystem)
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
maintenance service, and calls for the
next maintenance service accordingly.GAWR
(G
ross A
xle W
eight R
ating)
(
page 355)
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 gear selector le-
ver.
GPS
(Global 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.
GVW
(G
ross V
ehicle W
eight)
(
page 355)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 356)
490 Technical termsMOE
(M
ercedes-Benz O
riginal E
xtended
equipment tires)
Tires with limited run-flat characteris-
tics. The MOExtended system allows
you to continue driving your vehicle
even if there is a total loss of pressure
in one or more tires.
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.
Normal occupant weight
(
page 356)
OCS
(Occupant C
lassification S
ystem)
The system automatically turns the
front passenger front air bag on or off
based on the classified occupant size
category determined by weight sensor
readings from the seat.Overspeed range
Engine speeds within the red marking
on 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.
Poly-V-belt drive
Drives engine-components (alternator,
AC compressor, etc.) from the engine.
Power train
Collective term designating all
components used to generate and
transmit motive power to the drive
axles, including
engine
clutch/torque converter
transmission
transfer case
drive shaft
differential
axle shafts/axlesProduction options weight
(
page 356)
Program mode selector switch
Used to switch the automatic transmis-
sion between regular operationS and
comfort operationC.
CLK 55 AMG with steering wheel gear-
shift control and manual shift program:
In addition toS andC (for regularS or
comfortC operation, see above) you
can use theM for manual shift
program.
PSI
(Pounds per S
quare I
nch)
(
page 356)
Recommended tire inflation pressure
(page 356)
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.
491 Technical terms
Restraint systems
Seat belts, child restraints, lower an-
chors and tethers for children (LATCH).
As independent systems, their protec-
tive functions complement one anoth-
er.
Rim
(
page 356)
Roll bars
Occupant protection system which
consists of tubular steel, integrated in
the rear head restraints. The roll bars
are lowered into the car body during
normal driving conditions and raised
automatically in an accident or in a crit-
ical driving situation.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.
RFI*
(R
un F
lat I
ndicator)
The Run Flat Indicator monitors the set
tire inflation pressures by evaluating
each wheel’s rotational speed. If a
wheel’s rotational speed changes due
to falling tire inflation pressure, a corre-
sponding warning message appears in
the multifunction display.Shift lock
When the vehicle is parked, this lock
prevents the gear selector lever from
being inadvertently moved out of
positionP without SmartKey turned
and brake pedal depressed.
Sidewall
(
page 356)
Soft top
Soft top roof that can be opened by
pulling and closed by pressing a switch
and stored in the soft top compartment
in the trunk area.
SRS
(Supplemental R
estraint S
ystem)
Air bags, air bag control unit (with
crash sensor), emergency tensioning
device. Though independent systems,
they are closely interfaced to provide
effective occupant protection.
Steering wheel gearshift control
(CLK 500*, CLK 55 AMG)
You can change the gears yourself with
the steering wheel gearshift buttons.
497 Index
Drinking and driving 307
Driving
Abroad 315
Hydroplaning 311
In winter 313
Instructions 45, 307
Problems 56
Safety systems 87
Systems 265
Through standing water 314
Driving off 310
Driving safety systems
ABS 87
BAS 88
ESP
®
89
Driving systems
Cruise control 265
Parktronic system*
(Canada only) 269
E
Easy-entry/exit feature 42, 160
Electrical fuses see Fuses
Electrical outlet 287
Electrical system, Technical data 477
Electronic Stability Program see ESP
®
Emergency call system* 289Emergency calls
911 calls 247
Tele Aid calls 290, 291
Emergency operation
(Limp Home Mode) 180
Emergency operations
Active head restraints, Resetting 434
Center console,
Indicator lamps 381–382
Gear selector lever, Unlocking 422
Instrument cluster,
Indicator lamps 374–380
Remote door unlock 295
Roll bars, Lowering 424
Roll bars, Releasing 423
Soft top, Closing 425–433
Trunk lid, Releasing from inside 115
Trunk lid, Unlocking 420
Unlocking/locking
the vehicle 419, 420
Emergency tensioning device see ETD
Emergency, In case of
Battery,Jump starting 292, 456
First aid kit 413
Flat tire, Changing 446
Fuses 462Hazard warning flasher 133
Roadside Assistance 12
Towing the vehicle 458
Emission control 316
Emission control information label 468
Emission control vacuum line
routing diagram label 468
Emission system warranties 10
Engine
Belt layout 469
Block heater (Canada only) 360
Break-in recommendations 306
Cleaning 366
Compartment 321
Malfunction indicator lamp 25, 376
Maximum engine speed 470
Messages in display 397
Number 468, 488
Starting 48
Starting difficulties 50
Starting with KEYLESS-GO* 49
Starting with SmartKey 49
Technical data 470
Turning off 58
Turning off with KEYLESS-GO* 59
Turning off with SmartKey 58
502 Index
Fuel reserve 25, 379
High beam headlamp 25
Instrument cluster 374–380
Low beam headlamp 25
Maintenance service 361
Parktronic system*
warning indicators 271
Roll bar 379
Seat belt telltale 25, 71, 379
Seat belts 379
SRS 25, 63, 380
Turn signals 25
Language, Setting 151
LATCH-type child seat anchors see
Children in the vehicle
License plate lamps
Messages in display 405
Replacing bulbs 439, 443
Light alloy wheels, cleaning 370
Light sensor see Lamp sensor
Lighter see Cigarette lighter
Lighting, Exterior and interior 127
Limp Home Mode 180
Loading
Ski sack* (Canada only) 273
Loading see Vehicle loadingLoading the vehicle 333
Locator lighting 129, 157
Lock buttons
Door handle (KEYLESS-GO*) 60, 104
Trunk lid (KEYLESS-GO*) 106
Lock knob 489
Locking 60
Loss of keys 100, 106
Loss of Service and
Warranty Information Booklet 467
Low beam headlamps
Indicator lamp 25
Messages in display 406
Replacing bulbs (Bi-Xenon*) 438
Replacing bulbs (Halogen) 438, 440
Switching on 52
Lubricants 479
Luggage cover 262
Folding back 273
M
Maintenance 12, 361
Calling up service indicator 362
Clearing service indicator 362
FSS (Canada vehicles) 361
Maintenance System
(U.S. vehicles) 361Resetting service indicator 363
Service indicator 361
Service term exceeded 362
Maintenance system
(U.S. vehicles) 361, 489
Manual headlamp mode see Headlamps
Manual shift program 178
MAXCOOL maximum cooling 202
Maximum load rating, Tires 356
Maximum loaded vehicle weight,
Tire inflation pressure 356
Maximum tire inflation pressure 356
Mechanical key 419
Memory function see Seats, Power
Menus see Control system menus
Microphone, Hands-free 29
Minispare wheel see Spare wheel
Mirrors
Adjusting 43
Antiglare position 181
Auto-dimming 182
Exterior rear view mirrors 43
Parking position 126, 161, 183
Interior rear view mirror 43
MOE see MOExtended
MOE tires see MOExtended system*
503 Index
MOExtended490
MOExtended system* 452
MON 319, 489
Motor Octane Number see MON
Multicontour seat* see
Seats, Multicontour*
Multifunction display 140, 490
Changing settings see
Control system menus and
Control system submenus
Displaying gear range 171
Selecting language 151
Symbol messages 395–412
Text messages 385–393
Multifunction display messages 383
ABS 385
Battery 395
Brake fluid 396
Brake lamp 404
Brake pads 396
Check engine 397
Coolant 397–399
Display 400
Doors 400
Engine 397
Engine coolant 397–399Engine oil 323, 401
ESP
®
387, 388
Fog lamps 405
Front passenger
front air bag 389–392
Fuel cap 400
Fuel reserve tank 403
Gear selector lever 393
Headlamps 404–408
Hood 403
Key, SmartKey 403
KEYLESS-GO* 403
Lamp sensor 405
Lamps 404
Lamps, exterior 404–408
License plate lamp 405
Parking brake 396
Parking lamps 406
Roll bars 408
Seat belts 409
Soft top 410
SRS 409
Steering gear oil 410
Tele Aid 409
Telephone* 411
Trunk 412Turn signals 407
Windshield washer fluid 412
Multifunction
steering wheel 26, 140, 490
Button operation 140
N
Navigation system* 146
See separate
COMAND* operating instructions
Net, Parcel 280
Neutral gear position 168
New vehicle break-in 306
Night security illumination 129
Normal occupant weight 356
Number, vehicle identification (VIN) 468
504 IndexO
Occupant Classification System see OCS
Occupant distribution 356
Occupant safety 62
Active head restraints 73
Air bags 63
Children and air bags 64
Children in the vehicle 75
ETD 72
Fastening the seat belts 45
Front air bags 67
Front passenger front
air bag off indicator lamp 81, 381
Head-thorax air bags 68
Infant and child restraint systems 75
LATCH-type child seat anchors 83
OCS 78
Rear side-impact air bags* 68
Roll bars 74
Safety guidelines,
Seat belts, Air bag, ETD 66
Seat belts 45, 69
SRS 62
OCS 78, 490
Self-test 82
Odometer 25Oil level see Engine oil, checking level
Oil see Engine oil
One-touch gearshifting 173
Operating safety 209
Operating the vehicle
outside the USA or Canada 13
Ornamental moldings, cleaning 368
Outside temperature see Displays
Overdue maintenance service 362
Overhead control panel 29
Overspeed range, Engine 490
P
Paintwork, Cleaning 365
Panic alarm 86
Parcel net
Front passenger footwell 280
Parking 57, 310
On hills 57, 310
Over combustible materials 57, 310
Parking assist* see
Parktronic system* (Canada only)
Parking brake 50, 57
Message in display 396
Warning sounds 51Parking lamps 127
Message in display 406
Replacing bulbs 438, 439, 441, 442
Parking position
Exterior
rear view mirrors 126, 161, 183
Parktronic system* (Canada only) 269
Cleaning system sensors 369
Malfunction 272
Range of the sensors 270
Switching on/off 272
Warning indicators 271
Warning sounds 271, 272
Parts service 466
PASS AIR BAG OFF indicator lamp see
Front passenger front
air bag off indicator lamp
Passenger compartment 314
Electrical outlet 287
Interior lighting 134
Interior rear view mirror 43
Main fuse box 463
Parcel net in
front passenger footwell 280
Storage bags,
rear side of the front seats 280
505 Index
Passenger safety see Occupant safety
Pedals 307
Phone see Telephone
Plastic and rubber parts, Cleaning 371
Poly-V-belt drive 490
Layout 469
Positions (Memory function) see
Seats, Power
Power assistance 307
Power seat see Seats, Power
Power train 490
Power washer 365
Power windows 249
Cleaning 370
Convenience closing feature 253
Express opening/closing 251
Opening with soft top switch 254
Operating 249
Rear side windows,
Blocking operation 85
Summer opening feature 252
Synchronizing 251
Practical hints 373
Premium unleaded gasoline 482
Problems
While driving 56With vehicle 17
Product information 9
Production options weight 356
Program mode
Automatic shift program 172
Manual shift program 178
Program mode
selector switch 172, 178, 490
PSI 356
R
Radio
Operation 217
Selecting stations 145
Selecting stations (satellite*) 145
Radio transmitters 315
Range (distance to empty) 163
Reading lamp 29, 135
Rear fog lamp see Fog lamps
Rear lamps see Tail lamps
Rear seat ashtray see Ashtrays
Rear seat head restraints see
Head restraints
Rear side windows
Blocking operation 85
Rear side-impact air bags* 68
Rear view mirrors see MirrorsRear window defroster 185
Recommended
engine oils and oil filter 481
Recommended
tire inflation pressure 356
Recovery services,
Stolen vehicle (Tele Aid) 296
Refrigerant, Air conditioning 481
Refueling 318
Regular checks 320
Reminder, Seat belt see Seat belts, Telltale
Remote control
SmartKey 96, 100
SmartKey with KEYLESS-GO* 100
Remote door unlock (Tele Aid) 295
Removing
Ski sack* (Canada only) 276
Replacing bulbs 438
Additional turn signals 438, 439
Backup lamps 439, 443
Brake lamps 439, 443
Corner-illuminating
front fog lamps* 438, 439
Fog lamps 438, 439, 443
Headlamp bulbs 440
Headlamps 438