
change gears using the steering wheel paddle
shifters or the selector lever in manual drive
program  M if the transmission is in position
D . The gear selected is shown in the
multifunction display.XPress program selector button
( Y  page  158) repeatedly until  M appears in
the multifunction display.
Upshifting
i Vehicles with the dynamic handling
package: if the maximum engine speed for
the shift range is reached and you continue
to accelerate, the automatic transmission
shifts up, except when manual program  M
is selected.
XBriefly press the selector lever to the right
towards  D+.
or
XPull the right-hand steering wheel paddle
shifter ( Y page 159).
The automatic transmission shifts up to the
next gear.
Downshifting
XBriefly press the selector lever to the left
towards  D–.
or
XPull the left-hand steering wheel paddle
shifter ( Y page 159).
The automatic transmission shifts down to
the next gear.
i If you brake the vehicle or stop without
shifting down, the automatic transmission
will shift down to a gear that will allow the
vehicle to accelerate or pull away again.
i To avoid overrevving the engine when
downshifting, the automatic transmission
does not shift to a lower gear if this would
result in the maximum engine speed being
exceeded.
Kickdown 
You can also use kickdown for maximum
acceleration in manual drive program  M.
XVehicles for USA:  fully depress the
accelerator pedal.
The automatic transmission shifts to a
lower gear depending on the engine speed.XVehicles for Canada:  depress the
accelerator pedal beyond the pressure
point.
The automatic transmission shifts to a
lower gear depending on the engine speed.
i During kickdown, you cannot change gear
using the steering wheel paddle shifters or
the selector lever.
Switching off the manual drive program
XVehicles with the dynamic handling 
package:  press the program selector
button ( Y page 158) repeatedly until  E or
S  appears in the multifunction display.Automatic transmission161Driving and parkingBA 207 USA, CA Edition B 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.62010-05-20T10:38:09+02:00 - Seite 161Z 

Problems with the transmissionProblemPossible causes/consequences and M SolutionsThe acceleration ability
is deteriorating.
The transmission no
longer changes gear.The transmission is in emergency mode.
It is only possible to shift into  2nd gear and reverse gear.XStop the vehicle.XShift the transmission to position  P.XSwitch off the engine.XWait at least 10 seconds before restarting the engine.XShift the transmission to position  D or  R.
If  D is selected, the transmission shifts into  2nd gear; if  R is
selected, the transmission shifts into reverse gear.XHave the transmission checked at a qualified specialist
workshop immediately.Releasing the parking lock manually
In the event of an electrical malfunction, it is
possible to release the selector lever lock
manually to move it out of position  P, e.g. if
you wish to tow the vehicle away.
!  Do not use any sharp-edged objects to
remove the selector lever cover in the
center console. This can damage the
selector lever cover.
XDepress the parking brake firmly.XPry out selector lever gaiter  : with a flat,
blunt object (e.g. a screwdriver wrapped incloth) from the right-hand edge, pulling it
up and out.XPress release button  ; down and
simultaneously move the selector lever out
of position  P.
The selector lever can now be moved freely
until it is returned to position  P.
Refueling
Important safety notes
GWarning
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flames or smoking
materials near gasoline.
Turn off the engine before refueling.
Whenever you are around gasoline, avoid
inhaling fumes and any skin or clothing
contact.
Direct skin contact with fuels and the
inhalation of fuel vapors are damaging to your
health.
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Problems with the fuel and fuel tankProblemPossible causes/consequences and M SolutionsFuel is leaking from the
vehicle.GRisk of explosion or fire
The fuel line or the fuel tank is defective.
XTurn the key to position  0(Y  page 151) in the ignition lock
immediately and remove it.XDo not restart the engine under any circumstances.XConsult a qualified specialist workshop.The fuel filler flap
cannot be opened.The fuel filler flap is not unlocked.
or
The key batteries are discharged.XUnlock the vehicle ( Y page 74).
or
XUnlock the vehicle using the mechanical key ( Y page 77).The fuel filler flap is unlocked, but the opening mechanism is
jammed.XConsult a qualified specialist workshop.Parking
Important safety notes
GWarning!
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system. These materials could be
ignited and cause a vehicle fire.
Vehicle movement may result in serious
personal injury or damage to the vehicle or
vehicle drivetrain. Therefore, always do the
following before turning off the engine and
leaving the vehicle:
R Keep right foot on the brake pedal.
R Engage the parking brake.
R Shift the automatic transmission into park
position  P.
R Slowly release the brake pedal.
R When parked on an incline, always turn the
front wheels towards the road curb.
R Turn the SmartKey in the starter switch to
position  0 and remove the SmartKey from
the starter switch, or press the KEYLESS-
GO start/stop button.
R Take the SmartKey with you and lock the
vehicle when leaving.
Switching off the engine
Important safety notes
GWarning
Do not turn off the engine before the vehicle
has come to a complete stop. 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 vehicle.
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attention to the traffic conditions. This will
warm up the brake discs, thereby drying them
more quickly and protecting them against
corrosion.
Limited braking performance on salt
treated roadsGWarning
The layer of salt on the brake discs and the
brake pads/linings may cause a delay in the
braking effect, resulting in a significantly
longer braking distance, which could lead to
an accident.
To avoid this danger, you should:
R occasionally brake carefully, without
putting other road users at risk, when you
are driving on salted roads. This helps to
remove any salt that may have started to
build up on the brake discs and the brake
pads/linings.
R maintain a greater distance to the vehicle
ahead and drive with particular care.
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues are removed
from the brake discs.
Maintenance of the brakes
!  If the red brake warning lamp lights up in
the instrument cluster and you hear a
warning tone while the engine is running,
the brake fluid level may be too low.
Observe additional warning messages in
the multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked
immediately. This work should be carried
out at an authorized Mercedes-Benz
Center.
All checks and maintenance work on the
brake system must be carried out at a
qualified specialist workshop. This work
should be carried out at an authorized
Mercedes-Benz Center.
Only install brake pads and use brake fluid
recommended by Mercedes-Benz.GWarning
If other than recommended brake pads are
installed, or other than recommended brake
fluid is used, the braking properties of the
vehicle can be degraded to an extent that safe
braking is substantially impaired. This could
result in an accident.
!  As the ESP ®
 system operates
automatically, the engine and the ignition
system must be switched off (SmartKey in
position  0 or  1 in the ignition lock or Start/
Stop button in position  0 or  1) when:
R testing the parking brake on a brake
dynamometer.
R you intend to have the vehicle towed with
one of the axles raised.
Braking maneuvers triggered automatically
by ESP ®
 may seriously damage the brake
system.
If your brake system is only subjected to
moderate loads, you should regularly test
your brake system's function by forcefully
depressing the brake pedal when driving at
high speed. This will give the brake pads
better grip.
GWarning
Make sure that you do not endanger other
road users when you apply the brakes.
A description of Brake Assist (BAS) can be
found on ( Y page 65) or of BAS PLUS on
( Y  page 65).
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evens out. Cruise control maintains the
stored speed on downhill gradients by
automatically applying the brakes.
Storing the current speed or calling up
the last stored speedGWarning
The set speed stored in memory should only
be set again if prevailing road conditions and
legal speed limits permit. Possible
acceleration or deceleration differences
arising from returning to the preset speed
could cause an accident and/or serious injury
to you and others.
XBriefly pull the cruise control lever towards
you  ?.XRemove your foot from the accelerator
pedal.
The first time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously
stored speed.
Setting a speed
GWarning
Keep in mind that it may take a brief moment
until the vehicle has made the necessary
adjustments.
Increase or decrease the set vehicle speed to
a value that the prevailing road conditions and
legal speed limits permit. Otherwise, sudden
and unexpected acceleration or deceleration
of the vehicle could cause an accident and/
or serious injury to you and others.
XPress the cruise control lever to the
pressure point, up  : for a higher speed or
down  ; for a lower speed.XKeep the cruise control lever pressed until
the desired speed is reached.XRelease the cruise control lever.
The new speed is stored.i Cruise control is not deactivated if you
depress the accelerator pedal. For
example, if you accelerate briefly to
overtake, cruise control adjusts the
vehicle's speed to the last speed stored
after you have finished overtaking.
Setting in 1 mph (Canada: 1 km/h)
incrementsXBriefly press the cruise control lever to the
pressure point, up  : for a higher speed or
down  ; for a lower speed.
The last speed stored is increased or
reduced.
Setting in 5 mph (Canada: 10 km/h)
increments
XBriefly press the cruise control lever
beyond the pressure point, up  : for a
higher speed or down  ; for a lower speed.
The last speed stored is increased or
reduced.
Deactivating cruise control
There are several ways to deactivate cruise
control:
XBriefly press the cruise control lever
forwards  =.
or
XBrake.
Cruise control is automatically deactivated if:
R you depress the parking brake.
R you are driving below 20 mph (30 km/h).
R ESP ®
 intervenes or you deactivate ESP ®
.
R you shift the transmission to position  N
while driving.
If cruise control is deactivated, you will hear
a warning tone. You will see the  Cruise 
control off  message in the multifunction
display for approximately five seconds.
i The last speed stored is cleared when you
switch off the engine.
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distance, which creates a danger of a
collision.
Immediately brake the vehicle to increase
your distance to the preceding vehicle. The
warning sound is intended as a final caution
in which you should intercede with your own
braking inputs to avoid a potentially
dangerous situation. Do not wait for the
operation of the warning signal to intercede
with your own braking. This will result in
potentially dangerous emergency braking
which will not always result in an impact being
avoided.
Tailgating increases the risk of an accident.GWarning
DISTRONIC PLUS brakes your vehicle with a
maximum deceleration of 13 ft/s(4 m/s 2
).
This corresponds to approximately 40% of
your vehicle's maximum possible braking
power.
You must apply the brakes yourself to avoid a
collision. DISTRONIC PLUS brakes the vehicle
to restore the set distance to the vehicle in
front or to restore the set speed.
GWarning!
If you do not receive visual or acoustic
warning signals during a critical traffic
situation, DISTRONIC PLUS has either not
recognized the collision risk, has been
deactivated or is malfunctioning.
Remember, whether or not DISTRONIC PLUS
is operating, it is ultimately always the drivers
responsibility to apply the brakes in order to
control the vehicle and avoid a collision.
Cruise control lever:To store the current speed or a higher
speed;To store the current speed or a lower
speed=To deactivate DISTRONIC PLUS?To store the current speed or call up the
last stored speedATo set the specified minimum distance
Activating DISTRONIC PLUS, storing
and maintaining the current speed
Important safety notes
GWarning!
When the DISTRONIC PLUS is switched on,
the vehicle can be braked. You should
therefore switch off the DISTRONIC PLUS if
the vehicle must be towed.
You can activate DISTRONIC PLUS under the
following circumstances:
R the engine has been started and you have
been driving for up to two minutes
R the parking brake is not applied
R ESP ®
 is activated
R the transmission is in position  D
R the hood is closed
R the driver's door is closed and you shift the
transmission from position  P to  D or your
seat belt is fastened
R the front-passenger door is closed
R the vehicle has not skidded
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Activating while driving
When driving at speeds below
20 mph (30 km/h), you can only activate
DISTRONIC PLUS if the vehicle in front has
been detected and is shown in the
multifunction display. If the vehicle in front is
not shown in the multifunction display and is
no longer detected, because it has changed
lanes, for example, DISTRONIC PLUS is
deactivated and a tone sounds.XBriefly pull the cruise control lever towards
you  ? or press it up  : or down  ; to the
pressure point.
DISTRONIC PLUS is selected.XKeep the cruise control lever pressed
up  : or down  ; until the desired speed
is set.XRemove your foot from the accelerator
pedal.
Your vehicle adapts its speed to that of the
vehicle in front, but only up to the desired
stored speed.
i If you do not fully release the accelerator
pedal, the  DISTRONIC PLUS Override
message appears in the multifunction
display. The set distance to a slower-
moving vehicle in front will then not be
maintained. You will be driving at the speed
you determine by the position of the
accelerator pedal.
Activating when driving towards a
stationary vehicle
If the vehicle in front of you is stationary, you
can only activate DISTRONIC PLUS once your
vehicle is stationary as well.
XBriefly pull the cruise control lever towards
you  ?.
DISTRONIC PLUS is selected.
i DISTRONIC PLUS can only be activated at
under 20 mph (30 km/h) if a vehicle in front
has been detected. Therefore, the
DISTRONIC PLUS distance display in the
instrument cluster should be activated.
XKeep the cruise control lever pressed
up  : or down  ; until the desired speed
is set.
i You can use the cruise control lever to set
the stored speed and the control on the
cruise control lever to set the specified
minimum distance ( Y page 179).
Pulling away
XIf the vehicle in front pulls away:  remove
your foot from the brake pedal.XBriefly pull the cruise control lever towards
you  ?.
or
XAccelerate briefly.
Your vehicle pulls away and adapts its
speed to that of the vehicle in front.
Driving
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control.
If a slower-moving vehicle is detected in front,
DISTRONIC PLUS causes your vehicle to
brake and maintain a preset distance to the
vehicle in front.
If DISTRONIC PLUS detects a faster-moving
vehicle in front, it increases the driving speed,
but only up to the desired speed you have
stored.
GWarning!
When you step on the brake pedal, you switch
off the DISTRONIC PLUS except when the
vehicle is at a standstill. The DISTRONIC PLUS
will no longer brake your vehicle. You are
always responsible for maintaining a distance
from other vehicles, observing road speeds
and braking well in advance.
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becomes louder if you attempt to lock the
vehicle. The vehicle is not locked until
DISTRONIC PLUS is deactivated.
i If the engine has been switched off, it
cannot be started again until DISTRONIC
PLUS has been deactivated.
If DISTRONIC PLUS is activated and a fault
occurs in the system or if there is a disruption
in the power supply, the message is shown in
the multifunction display. Immediately
depress the brake firmly until the warning
message in the multifunction display goes out
or shift the transmission to  P. DISTRONIC
PLUS is then deactivated.
Setting a speedGWarning
Keep in mind that it may take a brief moment
until the vehicle has made the necessary
adjustments.
Increase or decrease the set vehicle speed to
a value that the prevailing road conditions and
legal speed limits permit. Otherwise, sudden
and unexpected acceleration or deceleration
of the vehicle could cause an accident and/
or serious injury to you and others.
XPress the cruise control lever to the
pressure point, up  : for a higher speed or
down  ; for a lower speed.XKeep the cruise control lever pressed until
the desired speed is reached.XRelease the cruise control lever.
The new speed is stored. DISTRONIC PLUS
is activated and adjusts the vehicle's speed
to the new speed stored.
Setting in 1 mph (Canada: 1 km/h)
increments
XBriefly press the cruise control lever to the
pressure point, up  : for a higher speed or
down  ; for a lower speed.
The last speed stored is increased or
reduced.Setting in 5 mph (Canada: 10 km/h)
incrementsXBriefly press the cruise control lever
beyond the pressure point, up  : for a
higher speed or down  ; for a lower speed.
The last speed stored is increased or
reduced.
Storing the current speed or calling up
a stored speed
GWarning
The set speed stored in memory should only
be set again if prevailing road conditions and
legal speed limits permit. Possible
acceleration or deceleration differences
arising from returning to the preset speed
could cause an accident and/or serious injury
to you and others.
XBriefly pull the cruise control lever towards
you  ?.XRemove your foot from the accelerator
pedal.
DISTRONIC PLUS is activated and adopts
either the current speed or adjusts to the
last speed stored when it is activated for
the first time.
Setting the specified minimum distance
You can set the specified minimum distance
for DISTRONIC PLUS by varying the time span
between one and two seconds. With this
function, you can set the minimum distance
that DISTRONIC PLUS keeps to the vehicle in
front, dependent on vehicle speed. You can
see this distance in the multifunction display
( Y  page 180).
GWarning!
It is up to the driver to exercise discretion to
select the appropriate setting given road
conditions, traffic, driver's preferred driving
style and applicable laws and driving
recommendations for safe following distance.
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