Page 336 of 441

335 Practical hints
What to do if …
Text messages
Display messagePossible cause/consequencePossible solution
ABSABS, ESP
inoperative
See
Operator’s
ManualThe ABS and ESP® are not available due to
a malfunction.
The BAS is also deactivated.
The brake system is still functioning
normally but without but without the
systems specified above.Continue driving with added caution.
Wheels will lock during hard braking,
reducing steering capability.
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
Cruise cont.
and SPEED-
TRONICinoperativeCruise control is malfunctioning.Have the cruise control checked by an au-
thorized Mercedes-Benz Center.
ESPinoperative
See
Operator’s
ManualThe ESP® has switched off due to a
malfunction.
The ABS and the BAS might not be opera-
tional.
The brake system is still functioning
normally but without the systems speci-
fied above.Continue driving with added caution.
Contact an authorized Mercedes-Benz
Center as soon as possible.
Failure to follow these instructions
increases the risk of an accident.
Page 342 of 441

341 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
Run Flat Indicator
inoperative
The Run Flat Indicator* is malfunc-
tioning or has been switched off due
to an error.Have the Run Flat Indicator* checked by an
authorized Mercedes-Benz Center.
Check tires
Then restart
Run Flat Indicator
There was a warning message about
a loss in tire inflation pressure and
the Run Flat Indicator* has not been
reactivated yet.Make sure that the correct tire inflation pressure
is set for each tire.
Then reactivate the Run Flat Indicator*.
Tire pressure
Check tires
The Run Flat Indicator* indicates
that the pressure is too low in one or
more tires.Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers. Observe
the traffic situation around you.
Check and adjust the tire inflation pressure as
required (
page 290).
If necessary, change the wheel (page 377).
Reactivate the Run Flat Indicator* after adjusting
the tire inflation pressure values (
page 293).
Warning!G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 355 of 441
354 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
_Steering oil
Visit workshopThe steering gear oil level is too low.
There is a danger of steering gear
damage.Have the system checked by an
authorized Mercedes-Benz Center.
Warning!G
If the level of steering gear oil in reservoir is
too low, the steering power assistance could
fail. Much greater effort will then be needed
to turn the steering wheel.
Do not add steering oil without checking the
steering system.
Do not drive the vehicle. Have the system
checked at an authorized Mercedes-Benz
Center as soon as possible.
Page 356 of 441
355 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
LTele Aid malfunction.
Drive to workshopOne or more main functions of the Tele
Aid system* are malfunctioning.Have the Tele Aid system* checked by
an authorized Mercedes-Benz Center.
tFunction unavailableThis display appears if buttont
ors on the multifunction steering
wheel is pressed and the vehicle is not
equipped with a telephone*.
WTop up
washer fluidThe fluid level has dropped to
about1/3of total reservoir capacity.
Add washer fluid (page 280).
Page 378 of 441

377 Practical hints
Flat tire
Flat tire
Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.
Turn on the hazard warning flasher
(
page 115).
Turn the steering wheel so that the
front wheels are in a straight ahead
position.
Set the parking brake (page 54).
Move the gear selector lever toP
(manual transmission: to first or
reverse gear).
Turn off the engine (page 55).
Remove the SmartKey from the starter
switch.
Have any passenger exit the vehicle at
a safe distance from the roadway.
Mounting the Minispare wheel
Preparing the vehicle
Prepare the vehicle as described
(
page 377).
Take the wheel wrench, alignment bolt,
collapsible wheel chock, and the jack
out of the trunk (
page 356).
Take the Minispare wheel and wheel
bolts out of the trunk (
page 359).
Warning!G
The dimensions of the Minispare wheel are
different from those of the road wheels. As
a result, the vehicle handling characteristics
change when driving with a Minispare wheel
mounted. Adapt your driving style accord-
ingly.
The Minispare wheel is for temporary use
only. When driving with Minispare wheel
mounted, ensure proper tire inflation
pressure and do not exceed a vehicle speed
of 50 mph (80 km/h).
Drive to the nearest Mercedes-Benz Center
as soon as possible to have the Minispare
wheel replaced with a regular road wheel.
Never operate the vehicle with more than
one Minispare wheel mounted.
Do not switch off the ESP
® when a
Minispare wheel is mounted.
iOpen doors only when conditions are safe to
do so.
Page 390 of 441

389 Practical hints
Towing the vehicle
Warning!G
If circumstances require towing the vehicle
with all wheels on the ground, always tow
with a tow bar if:
the engine will not run
there is a malfunction in the power
supply or in the vehicle’s electrical
system
as that will be necessary to adequately
control the towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make sure the SmartKey is in
starter switch position2.
If the SmartKey is left in starter switch
position0 for an extended period of time, it
can no longer be turned in the switch. In this
case, the steering is locked. To unlock,
remove SmartKey from starter switch and
reinsert.
iTo signal turns while being towed with the
hazard warning flasher in use, switch on the igni-
tion and activate the combination switch for the
left or right turn signal in the usual manner – only
the selected turn signal will operate.
Upon canceling the turn signal, the hazard warn-
ing flasher will operate again.
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.
!When towing the vehicle with all wheels on
the ground, please note the following:
With the automatic central locking activated and
the SmartKey in starter switch position2, the ve-
hicle doors lock if the left front wheel as well as
the right rear wheel are turning at vehicle speeds
of approx. 9 mph (15 km/h) or more.
To prevent the vehicle doors from locking, deac-
tivate the automatic central locking
(
page 143).
Towing of the vehicle should only be done using
the properly installed towing eye bolt. Never at-
tach tow cable, tow rope or tow rod to vehicle
chassis, frame or suspension parts.
iIf the battery is disconnected or discharged
the SmartKey will not turn in the starter
switch. For more information, see “Battery”
(
page 383) and “Jump starting”
(
page 386).
the gear selector lever will remain locked in
positionP. For information on manually un-
locking the transmission gear selector lever
see (
page 363).
Page 411 of 441
410 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Rear axleC 230 (all models)
C 280 (all models)
C 350
C 350 Sport
C 350 4MATIC1.0 US qt (1.0 l)
1.2 US qt (1.1 l)
1.2 US qt (1.1 l)
1.2 US qt (1.1 l)
1.0 US qt (1.0 l)Hypoid gear oil SAE 85 W 90
Front axleC 280 4MATIC
C 350 4MATIC0.5USqt (0.46l)Hypoid gear oil SAE 85 W 90
Transfer caseC 280 4MATIC
C 350 4MATICapprox. 0.62 US qt
(0.59 l)MB Transfer case fluid
Power steeringapprox. 1.1 US qt (1.0 l)MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubsapprox. 2.1oz (60g)
eachHigh temperature roller bearing grease
Brake system0.5 US qt (0.5 l)MB Brake Fluid (DOT 4+)
Cooling systemapprox. 7.8 US qt (7.4 l)MB 325.0 Anticorrosion/antifreeze
agent
Page 423 of 441

422 Index
COMAND* see separate COMAND
operating instructions
Combination switch 50, 113
Control system 121
Multifunction display 121
Multifunction steering wheel 122
Resetting to factory default 131
Control system menu 121
AUDIO 127
Menus overview 124
NAV* 129
Settings 131
Standard display 126
TEL* 146
Trip computer 144
Vehicle status
message memory 130
Control system submenus 123, 125
Convenience 143
Instrument cluster 134
Lighting 139
Time/Date 136
Vehicle 142Coolant 278, 416
Anticorrosion/antifreeze
quantity 416
Capacities 409, 410
Checking coolant level 273, 278
Messages in display 345–347
Temperature 270
Temperature gauge 25, 119
Corner-illuminating front fog lamps* 113
Replacing bulbs 368
Cruise control 227
Cruising range, fuel 415
Cup holder 239, 241
Curb weight 304D
Date display, setting 138
Daytime running lamp mode 111
Setting 139
Deep water see Standing water
Defogging windshield
Automatic climate control* 180
Climate control 170
Defrosting, Front
Automatic climate control* 179
Climate control 169
Defrosting, Rear 163
Delayed shut-off
Exterior lamps 141
Interior lighting 142
Department of Transportation see DOT
Difficulties
While driving 53
With starting 47
Digital clock see clock
Digital speedometer 126
Dimensions, vehicle 408
Direction of rotation (tires) 284