Page 384 of 505

383 Practical hints
What to do if …?
Display messagePossible cause/
consequencePossible solution
Monitor the 56indicator lamp on the center console (page 29) and the mul-
tifunction display in the instrument cluster (
page 26) for the following:
With the seat unoccupied and the ignition turned on,
the 56indicator lamp on the center console should illuminate and remain
illuminated, indicating that the OCS (
page 71) has deactivated the air bag.
the message Front passenger airbag enabled See Operator’s Manual or the
message
Front passenger airbag disabled See Operator’s Manual should not
appear in the multifunction display at any time the seat is unoccupied. Wait at last
60 seconds for the system to complete the necessary check cycles and to make
sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. Depend-
ing on the front passenger classification sensed by the OCS (
page 71), the
56indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the system
checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!G
If the 56indicator lamp remains
out even after performing the above correc-
tive steps, do not have any children 12 years
old and under and other small individuals use the front passenger seat until the sys-
tem has been repaired.
Page 386 of 505

385 Practical hints
What to do if …?
Display messagePossible cause/
consequencePossible solution
Monitor the 56indicator lamp on the center console (page 29) and the mul-
tifunction display in the instrument cluster (
page 26) for the following:
With the seat unoccupied and the ignition turned on,
the 56indicator lamp on the center console should illuminate and remain
illuminated, indicating that the OCS (
page 71) has deactivated the air bag.
the message Front passenger airbag enabled See Operator’s Manual or the
message
Front passenger airbag disabled See Operator’s Manual should not
appear in the multifunction display at any time the seat is unoccupied. Wait at last
60 seconds for the system to complete the necessary check cycles and to make
sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again. Depend-
ing on the front passenger classification sensed by the OCS (
page 71), the
56indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the system
checked as soon as possible by an authorized Mercedes-Benz Center.
Warning!G
If the 56indicator lamp remains
illuminated with an adult occupant on the
front passenger seat even after performing
the above corrective steps, do not have anypassenger use the front passenger seat until
the system has been repaired.
Page 393 of 505

392 Practical hints
What to do if …?
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbolDisplay messagePossible cause/consequencePossible solution
Observe the coolant temperature indicator in
the instrument cluster (
page 26).
If the temperature rises again:
Contact an authorized Mercedes-Benz
Center immediately.
•The cooling fan for the coolant is mal-
functioning.Observe the coolant temperature indicator in the
instrument cluster (
page 26).
Have the fan replaced as soon as possible.
Warning!G
Driving when your engine is overheated can
cause some fluids which may have leaked
into the engine compartment to catch fire.
You could be seriously burned.
Steam from an overheated engine can cause
serious burns which can occur just by open-
ing the hood. Stay away from the engine if
you see or hear steam coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.!The engine should not be operated with the
coolant temperature above 248°F (120°C). Do-
ing so may cause serious engine damage which
is not covered by the Mercedes-Benz Limited
Warranty.
Page 438 of 505

437 Practical hints
Flat tire
Foreign objects (e.g. screws or nails)
should not be removed from the tire.
Take TIREFIT, the sticker, and the
electric air pump out of the trunk
(
page 404).
Attach the sticker (supplied with the
TIREFIT kit) where it will be easily seen
by the driver on the instrument cluster.1TIREFIT container
2Flap
3Notch
4Electrical plug
5Air hose
6Flange
Open flap2 on the electric air pump.
Pull electrical plug4 and air hose5
out of the pump housing.
Warning!G
TIREFIT is a limited repair device. TIREFIT
cannot be used for cuts or punctures larger
than approximately 0.16 in (4 mm) and tire
damage caused by driving with extremely
low tire inflation pressure, or on a flat tire, or
a damaged wheel.
Do not drive the vehicle under such circum-
stances.
Contact your nearest Mercedes-Benz
Center for assistance or call Roadside
Assistance.
Warning!G
Take care not to allow the contents of
TIREFIT to come in contact with hair, eyes or
clothing. TIREFIT is harmful if inhaled,
swallowed or absorbed through the skin -
causes skin, eye and respiratory irritation.
Any contact with eyes or skin should be
flushed immediately with plenty of water.
If clothing comes in contact with TIREFIT,
change clothing as soon as possible.
In case of allergic reaction or rash, consult a
physician immediately.
Warning!G
Keep TIREFIT out of reach of children.
If swallowed, rinse mouth immediately with
plenty of water and drink plenty of water.
Do not induce vomiting!
Consult a physician immediately.
Keep away from open flame or heat source.
iIf sealant has leaked out, let it dry. You can
then peel it off.
Page 440 of 505

439 Practical hints
Flat tire
After attaining a tire inflation pressure
of 26 psi (1.8 bar), press0 on electric
air pump switch8.
The electric air pump should now be
switched off.
Turn the SmartKey in the starter switch
to position0 (
page 36).
Vehicles with KEYLESS-GO*:
Press the KEYLESS-GO* start/stop
button (
page 37) on the gear
selector lever twice. Do not depress
brake pedal.
Detach the electric air pump.
The air hose may still be hot. Please
exercise appropriate caution.
Place the electrical air pump back in
the trunk.
Close the trunk lid.
Drive away immediately.
The TIREFIT sealant will distribute itself
evenly inside the tire.
After driving the vehicle for an initial
10 minutes, check the tire inflation
pressure using pressure gauge 9 on
the air pump.
Warning!G
If a tire inflation pressure of 26 psi (1.8 bar)
is not attained, tire is too severely damaged
for TIREFIT to provide a reliable tire repair.
In this case, TIREFIT cannot properly seal
the tire.
Do not drive the vehicle.
Contact the nearest Mercedes-Benz Center
or call Roadside Assistance.
Warning!G
Do not exceed vehicle speed of
50 mph (80 km / h). A TIREFIT repair is not
designed to operate at higher speeds.
The sticker supplied with the TIREFIT kit
must be attached on the instrument cluster
where it will be easily seen by the driver.
Vehicle handling characteristics may
change. Adapt your driving accordingly.
Page 485 of 505

484 Index
Control system menus 142, 143
AMG 145
AUDIO 149
NAV* 151
Settings 153
Settings, Submenus 154
Standard display 145
Submenus 141
TEL* 167
Trip computer 165
Vehicle status message memory 152
Control system submenus 141, 143, 155
Convenience 164
Instrument cluster 156
Lighting 160
Time/Date 158
Vehicle 163Coolant 320, 477
Adding 320
Anticorrosion/antifreeze
mixing ratio and quantity 477
Capacities 472
Checking coolant level 320
Messages in display 390–392
Temperature 311
Temperature indicator 137
Warning lamp 371
Coolants 477
Corner-illuminating front fog lamps* 131
Replacing bulbs 428, 429
Cruise control 263
Canceling 265
Cruise control lever 263
Current speed 264
Fine adjustment 266
Higher speed 265
Last stored speed
(“Resume” function) 266
Slower speed 266
Cup holder 279
Curb weight 347D
Date 158
Date, Setting 159, 160
Daytime running lamp mode 128
Setting 160, 161
Deep water see Standing water
Defogging
Windshield 194, 204
Defrosting, Front 193, 204
Defrosting, Rear 187
Delayed shut-off
Exterior lamps 162
Interior lighting 163
Department of Transportation see DOT
Difficulties
With starting 52
Digital speedometer 145
Dimensions, Vehicle 471
Direction of rotation (tires) 326
Displays
Digital speedometer 145
Lap analysis 149
Maintenance service indicator 353
Messages in display 378
Multifunction display 139
Outside temperature 138
Page 486 of 505

485 Index
Overall analysis 148
RACETIMER 146
Symbol messages 388–403
Text messages 380–386
Vehicle status message memory 152
Vehicle status messages see
Multifunction display messages
Vehicle supply voltage 146
Distance to empty (Range),
Trip computer 165, 166
Door
Control panel 32
Entry lamps 135
Handle 108
Handle (inside) 32
Locking/unlocking,
KEYLESS-GO* 35, 62, 104
Locking/unlocking,
SmartKey 34, 62, 100
Opening from inside/outside 108
Remote door unlock (Tele Aid) 292
Unlocking, Mechanical key 410
DOT 347
Drinking and driving 301Driving
Abroad 309
Hydroplaning 306
In winter 308
Instructions 47, 301
Problems 57
Safety systems 88
Systems 263
Through standing water 309
Driving off 304
Driving safety systems
ABS 88
BAS 90
Electronic traction system 92
ESP
®90
Driving systems
Cruise control 263
Parktronic system*
(CLK 63 AMG (USA),
Canada all vehicles) 267
Driving tips 174
Accelerator position 174
Kickdown 174E
Easy-entry/exit feature 44, 164
Electrical fuses see Fuses
Electrical outlet 283
Electrical system, Technical data 470
Electronic Stability Program see ESP
®
Emergency call system* 287
Emergency calls
911 calls 247
Tele Aid calls 288, 289
Emergency operation
(Limp-Home Mode) 183
Emergency operations
Active head restraints, Resetting 424
Center console,
Indicator lamps 376–377
Gear selector lever, Unlocking 412
Instrument cluster,
Indicator lamps 366–375
Remote door unlock 292
Roll bars, Lowering 414
Roll bars, Releasing 413
Soft top, Closing 415–423
Trunk lid, Releasing from inside 116
Trunk lid, Unlocking 411
Unlocking/locking the vehicle 410
Page 490 of 505

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