347 Operation
Tires and wheels
Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or driv-
en no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.DOT (Department of Transportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross Axle Weight Rating)
The GAWR is the maximum permissible
axle weight. The gross vehicle weight on
each axle must never exceed the GAWR for
the front and rear axle indicated on the
certification label located on the driver’s
door B-pillar.
GVW (G
ross Vehicle Weight)
The GVW comprises the weight of the
vehicle including fuel, tools, spare wheel,
installed accessories, passengers and
cargo and, if applicable, trailer tongue
load. The GVW must never exceed the
GVWR indicated on the certification label
located on the driver’s door B-pillar.
359 Operation
Vehicle care
Soft top
Frequent cleaning reduces the
dirt-repellent effect of the soft top.
Intensive cleaning with Mercedes-Benz
car-care products for convertible soft tops
can help to restore the dirt-repellent
effect. Contact an authorized
Mercedes-Benz Center for detailed
information.
Light colored soft tops should be cleaned
frequently to prevent spots and dirt from
setting in, which could stain and discolor
the soft top material permanently.
Incorrect cleaning and care, as well as
ageing, can cause the soft-top seams to
leak. Have the soft-top seams sealed at a
Mercedes-Benz Center.Clean soft top with soft top raised and
locked. Lower the soft top into the storage
compartment only if the soft top is
completely dry.
Dry cleaning:
Brush the dry top with a soft-bristled
brush.
Brush top always from front to rear.
!Make sure that the windshield wiper switch
is set to0 (
page 55). Otherwise, e.g. the rain
sensor could activate and cause the wipers to
move unintentionally. This may lead to vehicle
damage.
Due to the width of the vehicle, fold in exterior
rear view mirrors prior to running the vehicle
through an automatic car wash to prevent
damage to the mirrors.
iAfter running the vehicle through an
automatic car wash, wipe any wax off of the
windshield (
page 362). This will prevent
smears and reduce wiping noise which can be
caused by residual wax on the windshield.
When leaving the car wash, make sure that the
mirrors are folded out. Otherwise they may
vibrate.
iIf the soft top is kept in the storage
compartment for a lengthy period, raise it and air
out with the windows open about every
4months.
Place a suitable cover over the soft top if you are
leaving the vehicle parked in the open for an
extended period of time.
!Remove bird droppings immediately. The
organic acid damages the material and causes
the soft top to leak.
Never use a power washer to clean the soft top,
as you may damage the soft top material.
Do not use sharp-edged instruments for the
removal of ice and snow.
Never use hot-wax when you run the vehicle
through an automatic car wash, as you may
damage the soft top material.
iDepending on the operation mode of the car
wash, there is the possibility of water drops
entering the vehicle’s interior. This is not an
indication of a defect or malfunction in
the soft top.
362 Operation
Vehicle care
Cleaning the windows and the wiper
blades
Make sure the hood is fully closed.
Make sure the vehicle’s on-board
electronics have status0 (
page 36).
Fold the wiper arms forward until they
snap into place.
Clean the wiper blade inserts with a
clean cloth and detergent solution.
Use a soft, clean cloth and a mild
window cleaning solution on all outside
and inside glass surfaces.
An automotive glass cleaner is
recommended.Light alloy wheels
If possible, clean wheels once a week.Use Mercedes-Benz approved Wheel
Care, a soft bristle brush and a strong
spray of water for cleaning the light
alloy wheels.!Never open the hood when the wiper arms
are folded forward.
Warning!G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: Make sure the
vehicle's on-board electronics have
status0) before cleaning the windshield
and/or the wiper blades. Otherwise, the
wiper motor could suddenly turn on and
cause injury.
!Do not pull on the wiper blade inserts. They
could tear.
!Fold the windshield wiper arms back onto
the windshield before turning the SmartKey in
the starter switch or pressing the KEYLESS-GO
start/stop button (vehicles with KEYLESS-GO*).
Hold on to the wiper when folding the wiper arm
back. If released, the force of the impact from
the tensioning spring could crack the windshield.
!To clean the window interior, do not use a
dry cloth, abrasives, solvents or cleaners
containing solvents. Do not touch the inside of
the front, rear or side windows with hard objects
such as an ice scraper or ring. Doing so may
damage the windows.
!Only use acid-free cleaning materials. Acid
may cause corrosion or damage the clear coat.
!The vehicle should not be parked for an
extended period of time immediately after it has
been cleaned, especially not after the wheel rims
have been cleaned with wheel rim cleaner.
Wheel rim cleaners can lead to increased
corrosion of the brake disks and brake pads.
Non-approved wheel cleaners may also damage
the wheel paint if the car is not driven after
cleaning. Therefore, the vehicle’s brake system
should always be warmed-up before it is parked
after cleaning. To do so, please drive your vehicle
for several minutes to allow the brakes to dry.
When applying Mercedes-Benz approved Tire
Care and Mercedes-Benz approved Wheel Care
products, take care not to spray them on the
brake disks.
489 Index
I
Identification labels 462
Identification number,
Vehicle (VIN) 462, 463
Ignition
with KEYLESS-GO* 38
with SmartKey 36
Immobilizer 95
Indicator lamps see
Lamps, indicator and warning
Infant and child restraint systems see
Children in the vehicle 82
Inflation pressure see
Tires, Inflation pressure
Inside door handle 32, 108
Instrument cluster 26, 136
Illumination brightness 136
Lamps in 366–375
Messages in display see
Multifunction display messages
Multifunction display 139
Instrument lighting see
Instrument cluster, Illumination
brightness
Instrument panel see Instrument cluster
Instruments and controls see CockpitInterior lighting 134
Delayed shut-off 163
Interior rear view mirror 45, 184
Antiglare position 184
Auto-dimming 185
Interior storage spaces see
Storage compartments
J
Jack 406
Jacking up the vehicle 441
Jump starting 450K
Key, Mechanical 410
Key, SmartKey 98
Batteries 107
Battery check lamp 100, 105
Changing batteries 426
Factory setting 100, 101
Ignition 36
Locking/unlocking 34, 62, 98
Locking/unlocking,
Global setting 100
Locking/unlocking,
Selective setting 100
Loss of 107
Message in display 395, 396
Opening and closing
the power windows 252
Opening and closing
the soft top 259
Positions in starter switch 36
Remote control 98
SmartKey with KEYLESS-GO* 101
Starting the engine 51
Steering wheel lock 36
Turning off the engine 60
Unlocking/opening trunk lid 101
494 Index
Power windows 249
Cleaning 362
Convenience closing feature 253
Express opening/closing 250, 251
Opening with soft top switch 254
Operating 249
Rear side windows,
Blocking operation 86
Summer opening feature 252
Synchronizing 251
Practical hints 365
Premium unleaded gasoline 475
Problems
While driving 57
With vehicle 17
Product information 9
Production options weight 348
Program mode see
Automatic transmission,
Automatic shift program
Program mode selector switch
Automatic shift program 176
PSI 348
Push-start see Tow-startR
RACETIMER (CLK 63 AMG only) 146
Radio
Operation 218
Search function 163
Selecting stations 149
Selecting stations (satellite*) 150
Radio transmitters 309
Range (distance to empty) 166
Reading lamp 31, 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 86
Rear side-impact air bags* 70
Rear view mirrors see Mirrors
Rear window defroster 187
Recommended
engine oils and oil filter 474
Recommended
tire inflation pressure 348
Recovery services,
Stolen vehicle (Tele Aid) 293Refrigerant, Air conditioning 474
Refueling 312
Regular checks 314
Reminder, Seat belt see Seat belts, Telltale
Remote control
SmartKey 98, 102
SmartKey with KEYLESS-GO* 101
Remote door unlock (Tele Aid) 292
Removing
Ski sack* (Canada only) 274
Replacing bulbs 427
Additional turn signals 428, 429
Backup lamps 428
Brake lamps 428
Corner-illuminating
front fog lamps* 428, 429
Fog lamps 428
Headlamp bulbs 430
Headlamps 428
High beam flasher
(Bi-Xenon*) 428, 431
High beam flasher
(Halogen) 428, 430
High beam headlamps
(Bi-Xenon*) 428, 431
496 Index
Service, Parts 460
Settings
Control system menus 142
Control system submenus 143
Date 159, 160
Factory, KEYLESS-GO* 104
Factory, SmartKey 100
Global, KEYLESS-GO* 104
Global, SmartKey 100
Individual vehicle 153
Memory function 124
Menus and submenus 141
Resetting all, Control system 153
Selective, KEYLESS-GO* 105
Selective, SmartKey 100
Time 158
Shelf below rear window, Cleaning 363
Shift program mode,
Automatic transmission 176
Shifting
Gear selector lever 50
Shifting,
Automatic transmission 53, 170Side marker lamps
Cleaning lenses 361
Messages in display 399
Replacing bulbs 428
Side windows see Power windows
Sidewall 348
Ski sack* (Canada only) 271
Removing 274
Ski sack roller blind 271, 274
Unfolding and loading 271
Unloading and folding 273
SmartKey see Key, SmartKey 98
SmartKey with KEYLESS-GO* see
KEYLESS-GO*
Snow chains 352
Snow tires 351
Soft top 255
Cleaning 359
Emergency operations 415–423
Locking after raising/lowering 258
Luggage cover 260
Messages in display 402
Opening/closing 255
Opening/closing,
SmartKey 259Opening/closing,
Soft top switch 256, 257
Wind screen 261
Soft top switch 254, 256
Sound system* 211, 215
Spare fuses 404, 456
Spare parts service see Parts service
Spare wheel 407
Bolts 404, 409
Mounting 441
Sizes 469
Speedometer 27, 156
SRS 65, 77
Indicator lamp 27, 65, 375
Standard display, Selecting display 157
Standing lamps 126
Replacing bulbs 428, 431, 432
Standing water, Driving through 309
Starter switch 25, 36
Positions 36
Starting difficulties, Engine 52
Starting, Engine 50
Status line, Selecting display 157
Steering column 43
Steering gear oil
Message in display 402