Page 418 of 464
418 Technical dataRims and tiresSpare wheel with collapsible tire
All models
Rim (light alloy)
4.5 B x 17 H2
Wheel offset
0.47 in (12 mm)
Collapsible tire
145/70-17 92P
1
1Must not be used with snow chains.iPlease note that the tire inflation
pessure of the collapsible tire differs
from the tire inflation pressure of the
road tires.
Inflate the collapsible tire to approxi-
mately 51 psi (3.5 bar).
Page 425 of 464

425 Technical data
Fuels, coolants, lubricants, etc.
Premium unleaded gasoline
Fuel requirements
Only use premium unleaded fuel:
The octane number (posted at the
pump) must be 91 min. It is an average
of both the Research (R) octane num-
ber and the Motor (M) octane number:
(R+M) / 2). This is also known as the
ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA, and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not exceed
10%; MTBE not to exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains
10% ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz only recommends the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to
engine performance problems such as:
Warm-up hesitation
Unstable idle
Knocking/pinging
Misfire
Power loss
!To maintain the engine’s durability and
performance, premium unleaded gaso-
line must be used. If premium unleaded
is not available and low octane fuel is
used, follow these precautions:
Have the fuel tank only partially
filled with unleaded regular and fill
up with premium unleaded as soon
as possible.
Avoid full throttle driving and abrupt
acceleration.
Do not exceed an engine speed of
3 000 rpm if the vehicle is loaded
with a light load such as two per-
sons and no luggage.
Do not exceed
2/3of maximum ac-
celerator pedal position if the vehi-
cle is fully loaded or operating in
mountainous terrain.
Page 431 of 464

431 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 323)
Air pressure
(page 323)
AIRSCARF neck-level heating
AIRSCARF neck-level heating provides
the surrounding area of the occupants’
necks with a heated air stream flowing
from openings in the head restraints.
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.
Aspect ratio
(page 323)BabySmart
TM1
air bag deactivation
system
This system detects if a special
system-compatible child restraint seat
is installed on the passenger seat.
The system will automatically
deactivate the passenger front air bag
when such a seat is properly installed
(the 75indicator lamp
located in the center console comes
on).
BabySmart
TM
compatible child seats
Special restraint system for children.
The sensor system for the passenger
seat prevents deployment of the pas-
senger front air bag if a BabySmart
TM
compatible child seat is installed. See
an authorized Mercedes-Benz Center
for availability.
Bar
(
page 323)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.
Bead
(
page 323)
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.
1BabySmart
TM
is a trademark of Siemens
Automotive Corp.
Page 441 of 464

441 Index
Bi-Xenon
Description 431
Headlamps 381
Bolts
For spare wheel 373
Brake Assist System see BAS
Brakes 274
Brake fluid 286, 424
Display message 356
Salty roads 274
SLK 55 AMG 275
Warning lamp 343
Break-in period 272
Bulbs
Front/rear lamps 380
Replacing 380
Buttons (Audio system) 194C
CAC 431
California, important notice 11
CAN system, description 432
Capacities
(Fuels, coolants, lubricants, etc.) 422
Catalytic converter 282
CD
Changer 250
Player/changer, operation 125
CD changer (Audio system) 207, 209
CD operation (Audio system) 207
Center console
Lamp 347
Overview 28
Central locking
Automatic (Control system) 141
Automatic (When driving) 97
From outside (SmartKey) 59
Locking/unlocking from inside 97
Central locking/unlocking switches 98
Certification label 410
CHECK ENGINE indicator lamp 344Child safety
Air bags 64
Children in the vehicle 73
Cigarette lighter 254
Cleaning tires 299
Climate control 172
Air conditioning 178
Air distribution 176
Air recirculation mode 176
Air volume 176
Control panel, overview 175
Defrosting 181
Maximum cooling 179
Rear window defroster 171
Switching on/off 175
Temperature 175
Clock 116
Cockpit
Description 432
Overview 22
Cold tire inflation pressure 323
Collapsible tire, description 432
Collapsible wheel chock 371
Page 442 of 464

442 IndexCOMAND 116
Description 432
Navigation 126
Radio transmitter 281
Combination switch 110
High beam flasher 110
High beam headlamps 52, 110
Low beam headlamps 52
Turn signals 52
Turn signals, additional in
mirrors 381
Windshield wipers 53
Comfort driving
Transmission program mode 158
Compatible child seat see Baby Smart
TM
Control system 117
AUDIO menu 123
Automatic locking 141
Calling up range 146
CD player/CD changer 125
Clock, hours 134
Clock, minutes 134
Convenience submenu 142
Coolant temperature 122
Date, day 136Date, month 135
Date, year 136
Daytime running lamp mode 137
Description 432
Easy-entry/exit feature 142
Fuel consumption statistics 144
Functions 118
Instrument cluster submenu 131
Interior lighting delayed shut-off 140
Key-dependency 143
Language 132
Lighting submenu 137
Locator lighting 138
Maintenance service indicator 329
Menus 118
Messages in display 348
Multifunction display 117
Multifunction steering wheel 118
NAV menu 126
Night security illumination 139
Outside temperature/speed 132
Overview (Menus) 120
Overview (Settings submenus) 130
Parking position 144Radio station 124
Resetting all settings 128
Resetting single settings 129
Satellite radio (USA only) 124
Settings menu 127
Settings submenus 129
Speed/outside temperature 123
Speedometer, display mode 131
Standard display 122
Submenus, selecting and
scrolling 129
TEL menu 146
Temperature, display mode 131
Time and date synchronization with
head unit 133
Time/date submenu 133
Trip computer menu 144
Vehicle status message memory
menu 126
Vehicle submenu 141
Controller Area Network see CAN system
Convenience closing
Power windows 235
Retractable hardtop 242
Page 443 of 464

443 Index
Coolant 293
Adding water 286
Anticorrosion/antifreeze 427
Fuels, coolants, lubricants, etc. 426
Technical data 422
Temperature 283
Temperature, checking
(Control system) 122
Cornering fog lamps (Lighting) 111
Cruise control 244
Canceling 246
Cruise control lever 244
Description 432
Display message 351
Driving uphill/downhill 246
Fine adjustment 248
Saving current speed 245
Set to last stored speed 248
Setting higher/lower speed 247
Cup holder 252
Cleaning 339
Curb weight 323
Customer Assistance Center see CACD
Date (Control system)
Day 136
Month 135
Year 136
Daytime running lamp mode 108
Control system 137
Deep water see Standing water
Defrosting see Automatic climate control
Defrosting see Climate control
Department of Transportation see DOT
Differential, driving after
replacement 272
Difficulties with starting 49
Direction of rotation (Tires) 300
Display elements (Audio system) 192
Display text see Messages in display
Door
Control panel, overview 31
Entry lamps 114
Doors
Locking from outside 92
Opening from inside 94
Unlocking from outside 92
Unlocking with Tele Aid 263DOT 323
Downshifting
Automatic transmission 154
Drink holder see Cup holder
Drinking and driving 273
Driver’s air bag see Air bags
Driver’s door
Locking in an emergency 375
Unlocking in an emergency 374
Driving 50
And drinking 273
Automatic transmission 50
Brakes 274
Catalytic converter 282
Coolant temperature 283
Driving off 276
Emission control 282
Fuel saving 273
General instructions 44, 273
Hydroplaning 277
In winter 279
Manual transmission 50
On salty roads 274
Parking 276
Pedals 273
Page 445 of 464

445 Index
ESP 82
Description 432
Display message 352
On/off switch 84
Warning lamp 345
ETD 71, 72
Description 433
Safety guidelines 66
Seat belt force limiter 72
Exterior lamp switch 106
Exterior lighting
Lamps 381
Replacing bulbs 380
Exterior rear view mirrors see MirrorsF
First aid kit 369
Flat tire 388
Inflating collapsible spare tire 393
Lifting vehicle 389
Lowering vehicle 395
Mounting spare wheel 388, 391
Removing wheel 391
Floormat (Driver’s side only) 255
Fog lamps 109, 381
Cornering fog lamps 111
FSS (Canada vehicles)
Control system 329
Description 433
Fuel
Additives 425
Consumption statistics
(Control system) 144
Filler flap 284
MON 284
Premium unleaded
gasoline 284, 425
Refueling 284
Requirements 425
Reserve warning lamp 345, 346RON 284
Saving fuel 273
Technical data 422
Fuel filler flap
Localization 25, 284
Fuel gauge (Instrument cluster) 25
Fuel tank capacity 423
Fuse extractor (Vehicle tool kit) 369
Fuses 404
Auxiliary fuse box 406
Main fuse box 405
Spare fuses (Vehicle tool kit) 369
Page 447 of 464
447 Index
I
Identification labels see Labels
Ignition (Position in starter switch) 35
Immobilizer see Anti-theft systems
Infant and child restraint systems 73
Information
About maintenance and warranty 10
Button for Tele Aid 261
Terminating a call (Tele Aid) 262
Instrument cluster 115
Cleaning 339
Clock 116
Description 433
Fuel gauge 25
Illumination 25, 115
Lamps, indicator and warning 342
Language in display
(Control system) 132
Outside temperature indicator
(Control system) 116
Overview 24
Reset button 25
Tachometer 115
Trip odometer 116Instruments and controls see Cockpit
Interior lighting
Delayed shut-off
(Control system) 140
Operation 113
Interior rear view mirror see Mirrors
Intermittent wiping see Windshield
wipers
Intermittent/interval wiping see
Windshield wipersJ
Jack (Vehicle tool kit) 369
Lifting vehicle 389
Lowering vehicle 395
Jump starting 399