Page 448 of 489
447 Technical data
Rims and tires
Same size tires
CLK 350
CLK 500
Rims (light alloy)
7.5 J x 17 H2
7.5 J x 17 H2
Wheel offset
1.42 in (36 mm)
1.45 in (37 mm)
Winter tires
1,3
1Radial-ply tires.
225/45 R17 91 H M+S.
225/45 R17 91 H M+S.
Winter tires
1,2,3
2Must be used in conjunction with Run Flat Indicator* only. 3Not available as factory equipment.
225/45 R17 91 H M+S.MOExtended
225/45 R17 91 H M+S.MOExtended
Page 449 of 489
448 Technical dataRims and tiresMixed size tires
CLK 350
CLK 500
Front axle:
Rims (light alloy)
7.5 J x 17 H2
7.5 J x 17 H2
Wheel offset
1.42 in (36 mm)
1.46 in (37 mm)
Summer tires
1
1Radial-ply tires.
225/45 R17 91W
225/45 R17 91W
Summer tires
*1,2
2Must be used in conjunction with Run Flat Indicator* only.
225/45 R17 91W MOExtended
225/45 R17 91W MOExtended
Rear axle:
Rims (light alloy)
8.5 J x17 H2
8.5 J x17 H2
Wheel offset
1.18 in (30 mm)
1.18 in (30 mm)
Summer tires
1,3
3Must not be used with snow chains.
245/40 R17 91W
245/40 ZR17 91W
Summer tires
*1,2,3
245/40 R17 91W MOExtended
245/40 R17 91W MOExtended
Page 450 of 489
449 Technical data
Rims and tires
Minispare wheel
All Models
Rim
3.5 B x 17 H2
Wheel offset
0.67 in (17 mm)
Tire
1
1Must not be used with snow chains.
T 125/80 R 17 99M
!Please compare the recommended tire
inflation pressure for your vehicle with
the tire inflation pressure on the yellow
label located on the spare wheel rim.
If the tire inflation pressure on the yel-
low label on the spare wheel rim differs
from the values given in this Operator’s
Manual, inflate the spare wheel tire to
the recommended tire inflation pres-
sure given on the yellow label on the
spare wheel rim.
iPlease note that the tire inflation pres-
sure of the Minispare tire differs from
the tire inflation pressure of the road
tires.
Make sure the Minispare tire is inflated
to approximately 60 psi (4.1 bar).
Page 462 of 489

461 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.
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.
Accessory weight
(
page 342)
Air pressure
(page 342)
Aspect ratio
(page 342)
Bar
(page 342)
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 342)
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
(Customer 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 342)
COMAND
(Cockpit M
anagement and D
ata Sys-
tem)
Information and operating center for
vehicle sound and communications
systems, including the radio and the
navigation system, as well as other op-
tional equipment (CD changer, tele-
phone, 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.
Page 464 of 489

463 Technical terms
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
coolant temperature indicator and fuel
display.
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 343)
Locking knob
Knob on the door which indicates
whether the door is locked or un-
locked. Pushing the locking knob down
on the driver’s or passenger door from
inside will lock that door.Maintenance System (U.S. vehicles)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. The Maintenance
System in your vehicle tracks distance
driven and the time elapsed since your
last maintenance service, and calls for
the next maintenance service
accordingly.
Maximum load rating
(
page 343)
Maximum loaded vehicle weight
(page 343)
Maximum tire inflation pressure
(page 343)
Memory function*
Used to store three individual seat,
steering wheel and exterior mirror
positions.Menu
The control system displays are ar-
ranged in menus. Each menu contains
a number of commands for particular
systems.
MON
(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
ANTI-KNOCK INDEX.
MOE
(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.
Page 466 of 489

465 Technical terms
Recommended tire inflation pressure
(
page 343)
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, child restraints, lower an-
chors and tethers for children (LATCH).
As independent systems, their protec-
tive functions complement one anoth-
er.
Rim
(page 343)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.
Run Flat Indicator*
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 343)
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
You can change the gears yourself with
the steering wheel gearshift buttons.
Page 468 of 489

467 Index
A
ABS 25, 87, 461
Malfunction indicator lamp 360
Messages in display 372
Accelerator position, automatic
transmission 174
Accessory weight 342
Accident 56
Active head restraints 73
Resetting 408
Air bags 63
Children 74
Front passenger
front air bag off indicator lamp 81
Front side impact air bags 68
Front, Driver 67
Front, Passenger 67
Occupant Classification System
(OCS) 77
Rear side impact air bags* 68
Safety guidelines 66
Window curtain 68Air conditioning refrigerant 454
Air conditioning system see
Climate control system
Air conditioning, Cooling 194, 206
Air distribution 190, 201
Air pressure see Tires, Inflation pressure
Air recirculation mode 192, 203
Air vents 195, 208
Air volume 190, 201
Alarm system see Anti-theft systems
Alignment bolt
(vehicle tool kit) 398, 423, 461
Anticorrosion/antifreeze 457, 458
Antiglare, Rear view mirror 180, 181
Antilock Brake System see ABS
Anti-theft systems 93
Anti-theft alarm system 93
Immobilizer 93
Tow-away alarm* 95
Aquaplaning see Hydroplaning
Armrest 271, 272
Storage box 269
Ashtrays 274, 275Aspect ratio 342
ATF 313
AUDIO menu 149
CD player CD, MP3-CD 150
Radio station 149
Radio station (satellite*) 149
Audio system 209
Button and soft key operation 212
CD changer* 227
CD operation 225
Emergency calls "911" 244
Operating and display elements 210
Operating audio system 209
Operating safety 209
Radio operation 216
Sound system* 213
Switching on/off 212
Telephone* operation 209, 231
Auto-dimming, Rear view mirror 181
Automatic central locking,
Control system 120, 163
Automatic climate control see
Climate control system
Automatic headlamp mode see Headlamps
Automatic lighting control,
Interior lighting 138
Page 471 of 489

470 IndexCockpit Management and Data System
see COMAND*
Cold tire inflation pressure 342
Collapsible wheel chock 398, 401
COMAND* 461
COMAND* see separate
COMAND operating instructions
Combination switch 52, 135
Control system 143, 461
Functions 145
Multifunction display 144
Multifunction steering wheel 144
Resetting to factory default 152
Control system menus 146, 463
AUDIO 149
NAV* 150
Settings 152
Settings, Submenus 153
Standard display 148
Submenus 145
TEL* 167
Trip computer 165
Vehicle status message memory 151Control system submenus 145, 147, 154
Convenience 164
Instrument cluster 155
Lighting 160
Time/Date 157
Vehicle 163
Controller Area Network see CAN system
Coolant 314, 457
Adding 314
Anticorrosion/antifreeze
mixing ratio and quantity 457
Capacities 453
Checking coolant level 314
Messages in display 384–386
Temperature 304
Temperature indicator 141
Warning lamp 364
Corner-illuminating front fog lamps* 135
Replacing bulbs 412Cruise control 254, 462
Canceling 256
Cruise control lever 254
Current speed 255
Fine adjustment 257
Higher speed 257
Last stored speed
("Resume" function) 257
Slower speed 257
Cup holder 273
Curb weight 342
Customer Assistance Center see CAC