After installing winter tires:XCheck the tire inflation pressure and adjust
it if necessary ( Y page 221).XRestart the tire pressure loss warning
system ( Y page 222) or the Advanced Tire
Pressure Monitoring System (Y page 223).
Snow chains
! Vehicles with Adaptive Damping System
(ADS):
When driving with snow chains, do not
select SPORT mode as this may result in
damage to your vehicle.
! Some tire sizes do not leave adequate
clearance for snow chains. To help avoid
serious damage to your vehicle or tires,
make sure the use of snow chains is
permissible as specified in the “Technical
data” section of this Operator’s Manual.
Snow chains should only be driven on snow-
covered roads at speeds not to exceed
30 mph (50 km/h). Remove chains as soon
as possible when driving on roads without
snow.
Observe the following guidelines when using
snow chains:
R Use of snow chains is not permissible with
all wheel/tire combinations ( Y page 352).
R Use snow chains in pairs and on rear
wheels only. Follow the manufacturer’s
mounting instructions.
! If snow chains are mounted to the front
wheels, they may scrape against the body
or axle components. The tires or the vehicle
could be damaged as a result.
R Only use snow chains that are approved by
Mercedes-Benz. Any authorized Mercedes-
Benz Center will be glad to advise you on
this subject.
R Use of snow chains may be prohibited
depending on location. Always check local
and state laws before installing snow
chains.
R Do not use snow chains on the spare wheel.
i When driving with snow chains, you may
wish to switch off the ESP ®
(Y page 63)
before setting the vehicle in motion. This
will improve the vehicle’s traction.
Winter driving instructions
GWarning!
If the vehicle becomes stuck in snow, make
sure snow is kept clear of the exhaust pipe
and from around the vehicle with the engine
running. Otherwise, deadly carbon monoxide
(CO) gases may enter vehicle interior
resulting in unconsciousness and death.
To assure sufficient fresh air ventilation, open
a window slightly on the side of the vehicle
not facing the wind.
GWarning!
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Indicated temperatures just above the
freezing point do not guarantee that the road
surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
GWarning!
On slippery road surfaces, never downshift in
order to obtain braking action. This could
result in drive wheel slip and reduced vehicle
control. Your vehicle’s ABS will not prevent
this type of loss of control.
The most important rule for slippery or icy
roads is to drive sensibly and to avoid abrupt
acceleration, braking and steering
maneuvers. Do not use the cruise control
system under such conditions.
When the vehicle is in danger of skidding, shift
the automatic transmission to neutral
Winter driving243Operation164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 243Z
Display messagesPossible causes/consequences and M SolutionsDISTRONICCurrently
Unavailabl
e
See
Operator’s
ManualDistronic is deactivated because:
R The Distronic cover in the radiator grille is dirty.
R The functionality is impaired by heavy precipitation or fog.
R The system is overheated.XIf necessary, clean the Distronic cover in the area of the
radiator grille ( Y page 263).XIf necessary, wait until the system has cooled down.XRestart the vehicle.
Distronic becomes operational again without the engine being
restarted when:
R dirt on the radiator grille has fallen off while driving (e.g.
slush or snow)
R the system recognizes full sensor availability (due to
lessening rain or the road surface drying)
R the message in the multifunction display disappears
You can then operate Distronic as usual again.
DISTRONICCurrently
Unavailabl
e
See
Operator’s
ManualDistronic is deactivated because the functionality is impaired
by external interferences, e.g. high-frequency sources such
as toll stations, speed measuring systems etc.XLeave the area of the external interference.XActivate Distronic again ( Y page 147) when the message
DISTRONIC Available Again appears.Distronic is deactivated because the Distronic sensor has not
sensed any other vehicles or objects, e.g. road sign or such,
for a long time.XActivate Distronic again ( Y page 147) when the message
DISTRONIC Available Again appears.GWarning!
Distronic cannot take weather conditions into
account. Switch off Distronic or do not turn it
on if the sensor is dirty or visibility is
diminished as a result of snow, rain or fog. The
distance control may be impaired even before
the system is able to detect a dirty sensor. The
message DISTRONIC Currently
Unavailable See Operator’s Manual will
be displayed in the multifunction display and
Distronic will be turned off.Vehicle status messages in the multifunction display279Practical hints164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 279Z
TiresDisplay messagesPossible causes/consequences and M SolutionsCheck
tires,then
restart
Run Flat
Indicator.There has been a warning message about a loss in the tire
inflation pressure and the tire pressure loss warning system
was not restarted yet.XMake sure the correct tire inflation pressure is set for each
tire.XThen restart the tire pressure loss warning system
( Y page 222).Run Flat
IndicatorInoperativ
eThe tire pressure loss warning system is malfunctioning.XHave the tire pressure loss warning system checked at an
authorized Mercedes-Benz Center.Tire
PressureCheck
TiresThe tire pressure loss warning system indicates that the tire
inflation pressure is too low in at least one tire.XCarefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers. Observe the traffic
situation around you.XCheck the tires and, if necessary, change the wheel
( Y page 319).XCheck and adjust tire inflation pressure as required
( Y page 221).XRestart the tire pressure loss warning system after
adjusting the tire inflation pressure values ( Y page 222).Tire
pressure
displayed
afterdriving
for a few
minutes.The tire inflation pressure is being checked by the Advanced
TPMS.XDrive the vehicle for a few minutes.Tire
Pressure
MonitorInoperativ
eThe Advanced TPMS is malfunctioning.XHave the Advanced TPMS checked at an authorized
Mercedes-Benz Center.Tire
Pressure
MonitorInoperativ
e No
Wheel
SensorsThere are wheels without appropriate wheel sensors mounted
(e.g. winter tires).XHave the Advanced TPMS checked at an authorized
Mercedes-Benz Center.XHave the appropriate wheel sensors installed at an
authorized Mercedes-Benz Center.Vehicle status messages in the multifunction display281Practical hints164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 281Z
Display messagesPossible causes/consequences and M SolutionsTire
Pressure
MonitorWheel
Sensor
MissingAt least one sensor is defect (e.g. battery is empty).
The respective tire is indicated by – – instead of the tire
inflation pressure in the multifunction display.XHave the Advanced TPMS checked at an authorized
Mercedes-Benz Center.XHave the wheel sensors installed at an authorized
Mercedes-Benz Center.At least one wheel without appropriate wheel sensors is
mounted (e.g. spare tire).
The respective tire is indicated by – – instead of the tire
inflation pressure in the multifunction display.XHave the Advanced TPMS checked at an authorized
Mercedes-Benz Center.XHave the wheel sensors installed at an authorized
Mercedes-Benz Center.Tire
Pressure
MonitorCurrently
Unavailabl
eThe Advanced TPMS cannot monitor the tire inflation pressure
due to a nearby radio interference source or insufficient
power supply.
As soon as the causes of the malfunction have been rectified,
the Advanced TPMS becomes active again automatically after
a few minutes of driving.Tire
Pressure(s
) Please
CorrectThe tire inflation pressure is too low in at least one tire.
or
The tire inflation pressures of the individual tires differ from
each other significantly.
The tire inflation pressure values are shown in the
multifunction display.XCheck and correct tire inflation pressure as required
( Y page 221).XRestart the Advanced TMPS ( Y page 226).Caution:
Tire
DefectAt least one tire is deflating.
The respective tire is indicated in the multifunction display.XCarefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.XIf necessary, change the wheel ( Y page 319).282Vehicle status messages in the multifunction displayPractical hints
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VehicleProblemPossible causes/consequences and M SolutionsThe yellow fuel tank
reserve warning lamp in
the fuel gauge comes
on while driving.The fuel level has gone below the reserve mark.XRefuel at the next gas station.
Engine
ProblemPossible causes/consequences and M Solutions! (USA only)
; (Canada only)
The yellow engine
malfunction indicator
lamp comes on when
the engine is running.There may be a malfunction in
R the fuel management system
R the ignition system
R the emission control system
R systems which affect emissions
Such malfunctions may result in excessive emissions values and
may switch the engine to limp-home (emergency operation) mode.XHave the vehicle checked as soon as possible at an authorized
Mercedes-Benz Center.
i Some states may by law require you to visit a workshop as
soon as the engine malfunction indicator lamp comes on. Check
local requirements.
! (USA only)
; (Canada only)
The yellow engine
malfunction indicator
lamp comes on when
the engine is running.A loss of pressure has been detected in the fuel system. The fuel
cap may not be closed properly or the fuel system may be leaky.XCheck the fuel cap ( Y page 210).XIf it is not closed properly: Close the fuel cap.XIf it is closed properly: Have the fuel system checked by an
authorized Mercedes-Benz Center.Diesel engine: Your fuel tank was driven empty.XAfter refueling, start, turn off and restart the engine three or four
times in succession.
The limp-home mode is canceled. You do not need to have your
vehicle checked.What to do if …303Practical hints164_AKB; 7; 31, en-USd2ureepe,Version: 2.11.8.12009-09-11T12:07:36+02:00 - Seite 303Z
Inflate the collapsible tire using the electric
air pump before lowering the vehicle.
XAttach ratchet to vehicle jack so that the
word DOWN can be seen.
Lower the vehicle until the vehicle is resting
fully on its own weight:
XTurn ratchet in direction DOWN.XRemove the jack.XTighten the five wheel bolts evenly,
following the diagonal sequence illustrated
(: to A), until all bolts are tight. Observe
a tightening torque of 110 lb-ft (150 Nm).
GWarning!
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).
XFully collapse the jack to storage position,
see (Y page 270).
XStore the jack and the other vehicle tools
in the designated storage space.
For information on storing the spare wheel
after it has been replaced by a regular road
wheel, see (Y page 271).
iThe damaged road wheel cannot be
stored in the spare wheel well under the
cargo compartment floor. It should be
transported in the cargo compartment
wrapped in a protective wrap.
iUSA only:
Do not restart the tire inflation pressure
monitor until a full size wheel/tire with
functioning sensor has been placed back
into service on the vehicle.
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 tire pressure loss
warning system (Y page 222) or the
Advanced TPMS (Y page 223).
The maximum distance in emergency mode
depends on the vehicle’s load. It is 50 miles
(80 km) if the vehicle is partially loaded and
18 miles (30 km) if the vehicle is fully loaded.
The point at which the maximum driving
distance in emergency mode begins is when
the warning message appears in the
multifunction display indicating that there is
a loss of tire inflation pressure.
XDo not exceed the maximum speed of
50 mph (80 km/h).
GWarning!
In emergency mode, your vehicle’s driving
characteristics are diminished in such
situations as:
Rdriving around curves
Rwhile braking
Rwhile accelerating rapidly
Therefore, your driving style must be adapted
accordingly. Avoid abrupt steering and driving
maneuvers, as well as driving over obstacles
(road curbs, potholes, or off-road areas). This
is especially important if the vehicle is heavily
loaded.
The emergency driving distance that can be
achieved greatly depends on the demands
placed on the vehicle. Depending on speed,
load, driving maneuvers, road conditions,
outside temperature, etc., the distance can be
330Flat tirePractical hints
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