run flat MERCEDES-BENZ C280 2007 W203 Owner's Manual

Contents
Maximum tire inflation pressure .. 301
Uniform Tire Quality Grading
Standards (U.S. vehicles) ............. 302
Tire ply material ........................... 304
Tire and loading terminology ........ 304
Rotating tires ............................... 307
Winter driving .................................... 308
Winter tires .................................. 308
Block heater (Canada only) .......... 309
Snow chains................................. 309
Maintenance ...................................... 310
Maintenance service indicator
message....................................... 310
Calling up the maintenance
service indicator display............... 312
Resetting the
maintenance service indicator ..... 312
Vehicle care ....................................... 313
Cleaning and care of the vehicle .. 313
Practical hints.................................. 321
What to do if … ................................... 322
Lamps in instrument cluster ......... 322
Lamp in center console................. 331
Vehicle status messages
in the multifunction display........... 333
Where will I find ...? ............................ 356
First aid kit .................................... 356
Vehicle tool kit .............................. 356
Minispare wheel............................ 359
Spare wheel bolts ......................... 360
Unlocking/locking in an emergency... 361
Unlocking the vehicle.................... 361
Locking the vehicle ....................... 362
Manually unlocking the
transmission gear selector lever ... 363
Opening/closing in an emergency ..... 364
Power tilt/sliding sunroof* ........... 364
Resetting activated head restraints .... 365
Resetting
activated head restraints .............. 365
Replacing SmartKey batteries ............ 366
SmartKey ...................................... 366Replacing bulbs .................................. 367
Bulbs............................................. 368
Replacing bulbs for front lamps .... 370
Replacing bulbs for rear lamps ..... 373
Replacing wiper blades ...................... 375
Removing and installing
wiper blades ................................. 375
Flat tire............................................... 377
Preparing the vehicle .................... 377
Mounting the Minispare wheel...... 377
MOExtended system* ................... 382
Battery ............................................... 383
Disconnecting the battery ............ 384
Removing the battery ................... 384
Charging and
reinstalling the battery.................. 385
Reconnecting the battery ............. 385
Jump starting...................................... 386
Towing the vehicle.............................. 388
Installing towing eye bolt .............. 390
Fuses.................................................. 391
Main fuse box
in passenger compartment ........... 392
Fuse box
in engine compartment................. 392
Fuse box in trunk .......................... 394

97 Controls in detail
Locking and unlocking
Opening the trunk from the outside
1Handle
Press and hold button Š on the
SmartKey until trunk unlocks and be-
gins to open.
or
Pull on handle1.
The vehicle must be unlocked.Opening the trunk from the inside
1Remote trunk opening switch
Press remote trunk opening switch1
until the trunk begins to open.
The trunk opens. The indicator lamp in
remote trunk opening switch1 comes
on and remains lit until the trunk is
closed.
Closing the trunk
1Handle
2Handles
Lower trunk lid by pulling firmly on
handle1 or handles2.
Close trunk lid with hands placed flat
on the trunk lid.
iIf the trunk does not open, it is still locked
separately (
page 99).
iThe trunk can also be opened from its inside
in an emergency, see “Trunk emergency re-
lease” (
page 98).
iIf the trunk does not open, it is still locked
separately (
page 99).
iThe trunk can also be opened be opened us-
ing buttonŠ on the SmartKey or from its in-
side in an emergency, see “Trunk emergency
release” (
page 98).
Warning!G
To prevent possible personal injury, always
keep hands and fingers away from the trunk
opening when closing the trunk.


125 Controls in detail
Control system
Menus, submenus and functions
Menu1Menu2Menu3Menu4Menu5Menu6Menu7
Standard
displayAUDIONAV*Vehicle status
message memorySettingsTrip computerTEL*
(page 126)(page 127)(page 129)(page 130)(page 131)(page 144)(page 146)
Commands/submenus
Run Flat
Indicator*
(Canada only)Selecting radio
stationShow route guid-
ance instructions,
current direction
traveledCall up vehicle mal-
function, warning and
system status messag-
es stored in memory
1
1The vehicle status message memory menu is only displayed if there is a message stored.
Reset to
factory
settingsFuel consumption
statistics from
startLoad phone
book
Digital speed-
ometer or out-
side temperatureSelecting satel-
lite radio sta-
tion* (USA only)Instrument
cluster sub-
menuFuel consumption
statistics since
the last resetSearch for
name in
phone book
Call up main-
tenance service
displayOperating
CD player* Time/Date
submenuDistance to
empty
Lighting
submenu
Vehicle
submenu
Convenience
submenu

126 Controls in detail
Control system
Standard display menu
In the standard display, the main odometer
and the trip odometer are shown in the
multifunction display.
1Trip odometer
2Main odometerIf another display is shown instead of the
standard display:
Press buttonè orÿ repeatedly
until you see the standard display.
Press buttonk orj to select
the functions in the standard display
menu.
The following functions are available:Call up digital speedometer or outside
temperature
Press buttonj ork repeatedly
until the digital speedometer or the
outside temperature appears in the
multifunction display.
Example illustration
1Digital speedometer
FunctionPage
Run Flat Indicator* (Canada
only)291
Call up digital speedometer or
outside temperature126
Call up maintenance service
display310
iYou can select whether the digital speedom-
eter or the outside temperature is to be dis-
played, see “Select display (digital speedometer
or outside temperature) for status indicator”
(
page 135).

232 Controls in detail
Loading
6Strap
Tighten strap6 by pulling at the loose
end (arrow) until the skis in the ski sack
are tightly secured.7Hook
8Eye
Connect hook7 to eye8.
Tighten strap by pulling at the loose
end (arrow).Unloading and folding
Loosen the straps.
Disconnect hook7 from eye8.
Unload skis.
Close flap in trunk.
Fold and flatten ski sack lengthwise.
Place folded ski sack inside recess of
backrest.
Fasten hook and loop fastener.
Close ski sack compartment cover.


291 Operation
Tires and wheels
Checking tire inflation pressure
manually
Follow the steps below to achieve correct
tire inflation pressure:
Remove the cap from the valve on one
tire.
Firmly press a tire gauge onto the
valve.
Read tire inflation pressure on tire
gauge and check against the recom-
mended tire inflation pressure on the
placard on the driver’s door B-pillar
(
page 289). If necessary, add air to
achieve the recommended tire inflation
pressure.
Install the valve cap.
Repeat this procedure for each tire.Run Flat Indicator*
U.S. vehicles: The Run Flat Indicator is only
available in conjunction with the
MOExtended* system (
page 294).
While the vehicle is being driven, the Run
Flat Indicator monitors the set tire inflation
pressures by evaluating each wheel’s rota-
tional speed. This allows the system to de-
tect a significant loss of pressure in a tire.
If a wheel’s rotational speed changes due
to falling tire inflation pressure, you will
see a corresponding warning message in
the multifunction display.
Warning!G
Follow recommended tire inflation pres-
sures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes,
etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified load limit as indicated on the plac-
ard on the driver’s door B-pillar. Overloading
the tires can overheat them, possibly caus-
ing a blowout.
iIf you have overfilled the tire, release tire in-
flation pressure by pushing the metal stem of the
valve with e.g. a tip of a pen. Then recheck the
tire inflation pressure with the tire gauge.

292 Operation
Tires and wheels
The Run Flat Indicator* may function in a
restricted manner or with a delay if:

snow chains are mounted to the
vehicle

winter road conditions prevail in
presence of ice and snow

you are driving on a loose surface (e.g.
sand or gravel)

you are driving in a very sporty manner
(involving rapid acceleration or high
speeds in curves)
Warning!G
When the multifunction display shows the
message
Tire pressure Check tires,
one or more of your tires is significantly un-
der-inflated. You should stop and check
your tires as soon as possible, and inflate
them to the proper tire inflation pressure as
indicated on the vehicle’s tire information
placard. Driving on a significantly under-in-
flated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability. Each tire, including the
spare, should be checked monthly when
cold and set to the recommended tire infla-
tion pressure as specified in the vehicle
placard and owner’s manual.
iThe recommended tire inflation pressures
for your vehicle can be found on the tire placard
located on the driver’s door B-pillar
(
page 289). The tire inflation pressures are
not listed in the owner’s manual.
Warning!G
The Run Flat Indicator* does not provide a
warning for wrongly selected tire inflation
pressures. Always adjust tire inflation pres-
sure according to the placard on the driver’s
door B-pillar or fuel filler flap.
The Run Flat Indicator* does not replace
regular checks of the tire inflation pressures
since a gradual pressure loss in more than
one tires cannot be detected by the Run Flat
Indicator*.
The Run Flat Indicator* is not able to issue a
warning due to a sudden dramatic loss of
tire inflation pressure (e.g. tire blowout
caused by a foreign object). In this case
bring the vehicle to a halt by carefully apply-
ing the brakes and avoiding abrupt steering
maneuvers.

293 Operation
Tires and wheels
Reactivating the Run Flat Indicator*
The tire inflation pressure monitor must be
reactivated in the following situations:

If you have changed the tire inflation
pressure

If you have replaced the wheels or tires

If you have installed new wheels or
tires
Using the tire placard on the driver’s
door B-pillar or, if available, the inside
of the fuel filler flap, make sure the tire
inflation pressure of all four tires is cor-
rect.
Switch on the ignition (page 32).
The standard display menu appears in
the multifunction display (
page 126).
Press buttonk orj repeatedly
until the following message appears in
the multifunction display:
Press the reset button in the
instrument cluster (
page 311).
The following message will appear in
the multifunction display:
Restart
Run Flat
Indicator?
Yes
Chancel
If you wish to confirm activation:
Press buttonæ.
The following message will appear in
the multifunction display:
Run Flat
Indicator
restarted
After a certain “learning phase”, the Run
Flat Indicator checks the set pressure
values for all four tires.
If you wish to cancel activation:
Press buttonç.
or
Wait until the message
Restart
Run Flat
Indicator?
Yes
Chancel
disappears.
Warning!G
The Run Flat Indicator* can only warn you in
a reliable manner if you have set the correct
tire inflation pressures for each tire.
If an incorrect tire inflation pressure was
set, the system will monitor the pressure
according to the incorrect value.

294 Operation
Tires and wheels
Potential problems associated with
underinflated and overinflated tires
Underinflated tires
Underinflated tires can:

cause excessive and uneven tire wear

adversely affect fuel economy

lead to tire failure from being
overheated

adversely affect handling
characteristicsOverinflated tires
Overinflated tires can:

adversely affect handling
characteristics

cause uneven tire wear

be more prone to damage from road
hazards

adversely affect ride comfort

increase stopping distance
MOExtended system*
The MOExtended system allows you to
continue driving your vehicle even if there
is a total loss of pressure in one or more
tires.
You may only use the MOExtended system
in conjunction with the Run Flat Indicator*
(
page 291).
For information on driving in case of pres-
sure loss in one or more tires (emergency
mode), see the “Practical hints” section
(
page 382).
Warning!G
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and / or unevenly,
adversely affect handling and fuel economy,
and are more likely to fail from being
overheated.
Warning!G
Follow recommended tire inflation
pressures.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride
comfort, wear unevenly, increase stopping
distance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.

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.