2012 MERCEDES-BENZ E-Class CABRIOLET change wheel

TiresProblemPossible causes/consequences and M Solutionsh
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.GRisk of accident
The tire pressure monitor has detected a loss of pressure in at
least one of the tires.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.XObserve the additional display messages in the multifunction
display.XCheck the tire pressure. If necessary, correct the tire pressure
( Y page 317).XIf necessary, change a wheel ( Y page 332).h
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) flashes for
60 seconds and then
remains lit.The tire pressure monitor is faulty.XObserve the additional display messages in the multifunction
display.XVisit a qualified specialist workshop.GWARNING
Each tire, including the spare (if provided), should be checked every other week when cold and
inflated to the inflation pressure recommended by the vehicle manufacturer on the Tire and
Loading Information placard on the driver's door B-pillar or, if available, the tire inflation pressure
label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size
indicated on the Tire and Loading Information placard or, if available, the tire inflation pressure
label, you should determine the proper tire inflation pressure for those tires.
As an added safety feature, your vehicle has been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pressure warning lamp when one or more of your tires
are significantly underinflated. Accordingly, when the low tire pressure warning lamp illuminates,
you should stop and check your tires as soon as possible, and inflate them to the proper pressure.
Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling
and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance,
and it is the driver's responsibility to maintain correct tire pressure, even if underinflation has
not reached the level to trigger illumination of the TPMS low tire pressure warning lamp.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the
system is not operating properly. The TPMS malfunction indicator is combined with the low tire
pressure warning lamp. When the system detects a malfunction, the warning lamp will flash for
approximately one minute and then remain continuously illuminated. This sequence will continue
Warning and indicator lamps in the instrument cluster249On-board computer and displaysZ

Rear window roller sunblind (Coupe)
Important safety notesGWARNING
When leaving the vehicle, always remove the
SmartKey from the ignition lock. Always take
the SmartKey with you and lock the vehicle.
Do not leave children unattended in the
vehicle, even if they are secured in a child
restraint system, or with access to an
unlocked vehicle. A child's unsupervised
access to a vehicle could result in an accident
and/or serious personal injury. The children
could:
R injure themselves on parts of the vehicle
R be seriously or fatally injured through
excessive exposure to extreme heat or cold
R injure themselves or cause an accident with
vehicle equipment that can be operated
even if the SmartKey is removed from the
ignition lock or removed from the vehicle,
such as seat adjustment, steering wheel
adjustment, or the memory function
If children open a door, they could injure other
persons or get out of the vehicle and injure
themselves or be injured by following traffic.
Do not expose the child restraint system to
direct sunlight. The child restraint system's
metal parts, for example, could become very
hot, and the child could be burned on these
parts.
GWARNING
When adjusting a roller sunblind, the roller
blind moves up or down. You might become
trapped in the process.
In the event of danger, briefly press the button
for the roller sunblind to change the roller
blind's direction of movement.
Extending/retracting the roller
sunblind
! Make sure that the roller sunblind can
move freely. Otherwise, the roller sunblind
or other objects could be damaged.
XTurn the key to position 2 in the ignition
lock.XTo extend or retract: briefly press
button :.
The roller sunblind fully extends or fully
retracts.
Ashtray
Ashtray in the front-compartment
center console
i You can remove the ashtray insert and
use the resulting compartment for
stowage.
! The stowage space under the ashtray is
not heat resistant. Before placing lit
cigarettes in the ashtray, make sure that
the ashtray is properly engaged. Otherwise,
the stowage space could be damaged.
XTo open: slide cover : forwards until it
engages.XTo remove insert: hold insert = by the
ribbing at the sides and lift it up ; and out.Features259Stowing and featuresZ

Mercedes-Benz Customer Assistance Center
will automatically contact local emergency
officials with the vehicle's approximate
location if they receive an automatic SOS
signal and cannot make voice contact with the
vehicle occupants.
Roadside Assistance buttonXPress and hold Roadside Assistance
button : for more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in Roadside Assistance button :
flashes while the call is active. The
Connecting Call message appears in the
multifunction display. The audio output is
muted.
If a connection can be established, the Call
Connected message appears in the
multifunction display.
If a cellular phone network is available and
there is sufficient GPS reception, the mbrace
system transmits data to the Mercedes-Benz
Customer Assistance Center, for example:
R current location of the vehicle
R vehicle identification number
i The COMAND display shows that an
mbrace call is active. During the call, you
can change to the navigation menu by
pressing the NAVI button on COMAND, for
example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants.XDescribe the type of assistance needed.
The Mercedes-Benz Customer Assistance
Center either sends a qualified Mercedes-
Benz technician or organizes for your vehicle
to be transported to the nearest authorized
Mercedes-Benz Center. You may be charged
for services such as repair work and/or
towing. Further details are available in your
mbrace manual.
i The mbrace system failed to initiate a
Roadside Assistance call if:
R the indicator lamp in Roadside
Assistance button : is flashing
continuously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This may be because the corresponding
mobile phone network is not available.
The Call Failed message appears in the
multifunction display.
XTo end a call: press the ~ button on the
multifunction steering wheel.
or
XPress the corresponding button for ending
a phone call on COMAND.
MB Info call button
264FeaturesStowing and features

XPress and hold MB Info call button : for
more than two seconds.
This initiates a call to the Mercedes-Benz
Customer Assistance Center. The indicator
lamp in MB Info call button : flashes while
the connection is being established. The
Connecting Call message appears in the
multifunction display. The audio output is
muted.
If a connection can be established, the Call
Connected message appears in the
multifunction display.
If a cellular phone network is available and
there is sufficient GPS reception, the mbrace
system transmits data to the Mercedes-Benz
Customer Assistance Center, for example:
R current location of the vehicle
R vehicle identification number
i The COMAND display shows that an
mbrace call is active. During the call, you
can change to the navigation menu by
pressing the NAVI button on COMAND, for
example.
Voice output is not available.
A voice connection is established between
the Mercedes-Benz Customer Assistance
Center and the vehicle occupants. You can
obtain information on how to operate your
vehicle's systems, on the location of the
nearest authorized Mercedes-Benz Center,
and on further products and services offered
by Mercedes-Benz USA.
Further details on the mbrace system can be
found under http://www.mbusa.com 20
.
Log in under "Owners Online".
i The mbrace system failed to initiate an
MB Info call if:
R the indicator lamp in MB Info call
button : is flashing continuously.
R no voice connection to the Mercedes-
Benz Customer Assistance Center was
established.
This may be because the corresponding
mobile phone network is not available.
The Call Failed message appears in the
multifunction display.XTo end a call: press the ~ button on the
multifunction steering wheel.
or
XPress the corresponding button for ending
a phone call on COMAND.
Call priority
When service calls are active, e.g. Roadside
Assistance or MB Info calls, an emergency
call can still be initiated. In this case, an
emergency call will take priority and override
all other active calls.
The indicator lamp of the respective button
flashes until the call is ended. An emergency
call can only be terminated by the Mercedes-
Benz Customer Assistance Center. All other
calls can be ended by pressing the ~
button on the multifunction steering wheel or
the corresponding button for ending a
telephone call on COMAND.
i If an mbrace call is initiated, audio output
is muted. The mobile phone is no longer
connected to COMAND. However, if you
want to use your mobile phone, we
recommend that you do this only when the
vehicle is stationary and in a safe location.
Downloading destinations in COMAND
i Information on the components and
operating principles of COMAND can be
found in the separate COMAND operating
instructions.
i You can only use the Destination
Download function if the vehicle is
equipped with a navigation system.
Destination Download gives you access to a
database with over 15 million points of
interest (POIs)/important destinations that
20 USA only.Features265Stowing and featuresZ

XWipe the plastic trim with a damp, lint-free
cloth, e.g. a microfiber cloth.XHeavy soiling: use car care and cleaning
products recommended and approved by
Mercedes-Benz.
The surface may change color temporarily.
Wait until the surface is dry again.
Cleaning the steering wheel and gear or
selector lever
XThoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz.
Cleaning genuine wood and trim
elements
XWipe the wooden trim and trim pieces with
a damp, lint-free cloth, e.g. a microfiber
cloth.XHeavy soiling: use car care and cleaning
products recommended and approved by
Mercedes-Benz.
! Do not use solvent-based cleaning agents
such as tar remover, wheel cleaners,
polishes or waxes. There is otherwise a risk
of damaging the surface.
! Do not use chrome polish on trim pieces.
The trim pieces have a chrome look but are
mostly made of anodized aluminum and
can lose their shine if chrome polish is
used. Use a damp, lint-free cloth instead
when cleaning the trim pieces.
If the chrome-plated trim pieces are very
dirty, you can use a chrome polish. If you
are unsure as to whether the trim pieces
are chrome-plated or not, consult an
authorized Mercedes-Benz Center.
Cleaning the seat covers
! Do not use microfiber cloths to clean
genuine leather, artificial leather or
Alcantara® covers. If used often, these can
damage the cover.
! Observe the following when cleaning:
R clean genuine leather covers carefully
with a damp cloth and then wipe the
covers down with a dry cloth. Make sure
that the leather does not become
soaked. It may otherwise become rough
and cracked. Only use leather care
agents that have been tested and
approved by Mercedes-Benz. You can
obtain these from a qualified specialist
workshop, e.g. a Mercedes-Benz Service
center.
R clean artificial leather covers with a cloth
moistened with a solution containing 1%
detergent (e.g. dish washing liquid).
R clean cloth covers with a microfiber cloth
moistened with a solution containing 1%
detergent (e.g. dish washing liquid). Rub
carefully and always wipe entire seat
sections to avoid leaving visible lines.
Leave the seat to dry afterwards.
Cleaning results depend on the type of
dirt and how long it has been there.
R clean Alcantara® covers with a damp
cloth. Make sure you wipe entire seat
sections to avoid leaving visible lines.
i Note that regular care is essential to
ensure that the appearance and comfort of
the covers is retained over time.
Cleaning the seat beltsXUse clean, lukewarm water and soap
solution.
! Do not clean the seat belts using chemical
cleaning agents. Do not dry the seat belts
by warming them above 176 ‡ (80 †) or
placing them in direct sunlight.
GWARNING
Do not bleach or dye seat belts as this may
severely weaken them. In a crash, they may
not be able to provide adequate protection.
286CareMaintenance and care

XTurn stowage well ; counter-clockwise
and remove it.XRemove "Minispare" emergency spare
wheel :.
For further information on changing a wheel
and mounting the spare wheel, see
( Y page 291).
Flat tire
Preparing the vehicle
XStop the vehicle as far away as possible
from traffic on solid, non-slippery and level
ground.XSwitch on the hazard warning lamps.XFirmly depress the parking brake.XBring the front wheels into the straight-
ahead position.XSwitch off the engine.XVehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.XVehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the SmartKey having
been removed.XVehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
( Y page 145).XAll occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.XMake sure that no one is near the danger
area while a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.XGet out of the vehicle. Pay attention to
traffic conditions when doing so.XClose the driver's door.Changing a wheel and mounting the
spare wheel
Preparing the vehicleGWARNING
The wheel and tire size of the emergency
spare wheel/spare wheel may differ to that of
the damaged wheel. When using an
emergency spare wheel/spare wheel the
handling characteristics of the vehicle may
change.
Adapt your style of driving accordingly.
Never operate the vehicle with more than one
emergency spare wheel/spare wheel that
differs in size.
Only use an emergency spare wheel/spare
wheel of a differing size briefly and do not
switch off ESP ®
.
When using an emergency spare wheel, you
must not exceed the maximum speed of
50 mph (80 km/h).
GWARNING
Have the emergency spare wheel/spare
wheel replaced with a new wheel as soon as
possible at a qualified specialist workshop
which has the necessary specialist knowledge
and tools to carry out the work required.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
i Vehicles without a spare wheel/
emergency spare wheel are not equipped
with a tire-change tool kit at the factory. For
more information on which tools are
required to perform a wheel change on your
vehicle, e.g. wheel chock, lug wrench or
alignment bolt, consult an authorized
Mercedes-Benz Center.
Flat tire291Breakdown assistanceZ

XPrepare the vehicle as described
( Y page 291).XRemove the following items (depending on
the vehicle's equipment) from the stowage
well under the trunk floor:
R the emergency spare wheel
R the vehicle tool kit
R the folding wheel chock
R the jackXSecure the vehicle to prevent it from rolling
away.
Securing the vehicle to prevent it from
rolling away
GWARNING
Only jack up the vehicle on level ground or on
slight inclines/declines. The vehicle could
otherwise fall off the jack and injure you or
others.
If your vehicle is equipped with a wheel chock,
it can be found in the vehicle tool kit
( Y page 290).
The folding wheel chock is an additional
securing measure to prevent the vehicle from
rolling away, for example when changing a
wheel.
XFold both plates upwards :.XFold out lower plate ;.XGuide the lugs on the lower plate fully into
the openings in base plate =.
Securing the vehicle on level ground (example:
Coupe)
XOn level ground: place chocks or other
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change.
Securing the vehicle on slight downhill gradients
(example: Coupe)
XOn downhill gradients: place chocks or
other suitable items in front of the wheels
of the front and rear axle.
Raising the vehicle
GWARNING
When jacking up the vehicle, only use the jack
which has been specifically approved by
Mercedes-Benz for your vehicle.
The jack is designed exclusively for jacking up
the vehicle at the jacking points built into both
sides of the vehicle. The jack saddle must be
placed centrally under the jacking point. The
jack must always be vertical when in use,
especially on inclines or declines.
292Flat tireBreakdown assistance

The jack is intended only for lifting the vehicle
briefly for wheel changes. It is not suited for
performing maintenance work under the
vehicle. To help avoid personal injury, use the
jack only to lift the vehicle during a wheel
change.
Never get beneath the vehicle while it is
supported by the jack. Keep hands and feet
away from the area under the lifted vehicle.
Always lower the vehicle onto sufficient
capacity jackstands before working under the
vehicle.
Always firmly engage the parking brake and
block the wheels with wheel chocks or other
sizable objects before raising the vehicle with
the jack. Do not disengage the parking brake
while the vehicle is raised.
Make sure that the ground on which the
vehicle is standing and where you place the
jack is solid, level and not slippery. If
necessary, use a large underlay. On slippery
surfaces, such as tiled floors, you should use
a non-slip underlay, for example a rubber mat.
Do not use wooden blocks or similar objects
as a jack underlay. Otherwise, the jack may
not be able to achieve its load-bearing
capacity if it is not at its full height.
Never start the engine when the vehicle is
raised.
Also observe the notes on the jack.XUsing lug wrench :, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts
completely.The jacking points for the jack are located
behind the wheel housings of the front wheels
and in front of the wheel housings of the rear
wheels (arrows).
Jacking points for the jack (example: Coupe)
Vehicles with AMG equipment: to protect
the vehicle body, the vehicle has covers next
to the jacking points on the outer sills.
XVehicles with AMG equipment: fold
cover ; upwards.GWARNING
The jack is designed exclusively for jacking up
the vehicle at the jacking points. The jack
saddle must be placed centrally under the
jacking point.
If you do not position the jack correctly in the
jacking point, the vehicle can fall off the jack
and seriously or fatally injure you or others.
! The jack is designed exclusively for
jacking up the vehicle at the jacking points.
Otherwise, your vehicle could be damaged.
Flat tire293Breakdown assistanceZ