1 in the ignition lock or if the ignition has
been switched on using the Start/Stop
button.
Engaging the electric parking brake
automatically The electric parking brake is automatically
applied if HOLD or DISTRONIC PLUS brakes
the vehicle until it is stationary and at least
one of the following conditions is fulfilled:
R
the engine is switched off.
R the driver's door is open and the seat belt
is not fastened.
R the hood is released.
R the
trunk lid is opened while the automatic
transmission is in position R.
R the vehicle is stationary for a lengthy
period.
The red F (USA only) or ! (Canada
only) indicator lamp in the instrument cluster
lights up.
i In addition to the electric parking brake,
P may also be engaged automatically.
Releasing the electric parking brake
automatically The electric parking brake is released
automatically when the following conditions
are simultaneously fulfilled:
R
the engine is running.
R the automatic transmission is in position
D or R.
R the hood is closed.
R your seat belt is fastened.
R you depress the accelerator pedal.
If the automatic transmission is in position
R, the trunk lid must be closed. If your seat belt is not fastened, the following
conditions must be fulfilled to automatically
release the electric parking brake:
R
the driver's door is closed.
R you shift out of P or you have previously
driven faster than 3 km/h
.
R you have shifted out of P or you have
previously driven faster than 2 mph
(3 km/h).
Emergency braking The vehicle can also be braked during an
emergency using the electric parking brake.
X
While driving, push handle :
of the electric
parking brake ( Y page 324).
i The
vehicle is braked as long as you keep
the handle of the electric parking brake
pressed. The longer the electric parking
brake handle is depressed, the greater the
braking force.
During braking:
R a warning tone sounds.
R the Please Release Parking Brake
message appears.
R the red F (USA only) or ! (Canada
only) indicator lamp in the instrument
cluster lights up.
When the vehicle has been braked to a
standstill, the electric parking brake is
engaged. Parking the vehicle for a long period
If
you leave the vehicle parked for longer than
four weeks, the battery may be damaged by
exhaustive discharge.
X Connect a trickle charger.
i You can obtain information about trickle
chargers from a qualified specialist
workshop, e.g. an authorized Mercedes-
Benz Center. Parking
325
Driving and parking Z
R
the driver's door must be closed when you
shift from P to D or your seat belt must be
fastened.
R the front-passenger door and rear doors
must be closed.
R the vehicle must not skid.
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 no longer detected and
shown, DISTRONIC PLUS is deactivated and
a warning tone sounds.
X Briefly pull the cruise control lever towards
you ?, or briefly press up : or down ;.
DISTRONIC PLUS is selected.
X Keep the cruise control lever pressed
up : or down ; until the desired speed
is set.
X Remove 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 is shown 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.
X Briefly pull the cruise control lever towards
you ?, or briefly press up : or down ;.
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
(Y page 383).
X Keep 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 338).
Pulling away
X If the vehicle in front pulls away:
remove
your foot from the brake pedal.
X Briefly pull the cruise control lever towards
you ?.
or
X Accelerate 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 causes your vehicle to brake. This
maintains the preset distance to the vehicle
in front.
If DISTRONIC PLUS detects a faster-moving
vehicle in front, it increases the driving speed
of your vehicle, but only up to the desired
speed you have stored. G
WARNING
If you depress the brake, DISTRONIC PLUS is
deactivated unless your vehicle is stationary.
DISTRONIC
PLUS then no longer brakes your
vehicle. In such cases, control the distance
from vehicles travelling in front with the brake
alone. You could otherwise cause an accident
and thereby injure yourself and others. The
driver remains fully responsible for the
vehicle's distance from other vehicles, the 336
Driving systems
Driving and parking
Obstructions and stationary vehicles
DISTRONIC PLUS does not brake for
obstacles or stationary vehicles. If, for
example,
the detected vehicle turns a corner
and reveals an obstacle or stationary vehicle,
DISTRONIC PLUS will not brake for these.
Crossing vehicles DISTRONIC PLUS may mistakenly detect
vehicles that are crossing your lane.
Activating DISTRONIC PLUS at traffic lights
with
crossing traffic, for example, could cause
your vehicle to pull away unintentionally. HOLD function
General notes The HOLD function can assist the driver in the
following situations:
R
when pulling away, especially on steep
slopes
R when maneuvering on steep slopes
R when waiting in traffic The vehicle is kept stationary without the
driver having to depress the brake pedal.
The
braking effect is canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away. G
WARNING
HYBRID vehicles: It is imperative that you read
the HYBRID Supplemental Operating
Instructions
included in your vehicle literature
portfolio. You may otherwise not receive all
necessary safety information and warning for
the operation of your vehicle.
Activation conditions You can activate the HOLD function if:
R
the vehicle is stationary.
R the
driver's door is closed or your seat belt
is fastened.
R the electric parking brake is released.
R the hood is closed.
R the transmission is in position R, N or D.
The trunk lid must be closed in position R.
R DISTRONIC PLUS is deactivated.
Activating the HOLD function X
Make sure that the activation conditions
are met.
X Depress the brake pedal. X
Quickly depress the brake pedal further
until HOLD display : appears in the
instrument cluster.
The HOLD function is activated. You can
release the brake pedal. 342
Driving systems
Driving and parking
ATTENTION ASSIST
Important safety notes ATTENTION ASSIST helps you during long,
monotonous journeys such as on freeways
and interstate highways. It is active in the
range between 50 mph (80 km/h) and
112 mph (180 km/h).
If ATTENTION ASSIST detects typical
indicators of fatigue or increasing lapses in
concentration on the part of the driver, it
suggests you take a break.
G
WARNING
ATTENTION ASSIST is only an aid and may
detect your tiredness or lapses in
concentration too late or not at all. It is not a
substitute for a well-rested and attentive
driver.
Fatigue may cause you to recognize
hazardous situations too late, misjudge a
situation or react more slowly. For this
reason,
make sure you feel rested before you
begin driving and during your journey. Make
sure that you take regular breaks in time,
particularly on long journeys. Otherwise, you
may fail to recognize dangers in time, cause
an accident and injure yourself and others.
ATTENTION ASSIST assesses your level of
fatigue or lapses in concentration by taking
the following criteria into account:
R your personal driving style, e.g. steering
characteristics
R driving conditions, e.g. time, driving time
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or
not occur at all:
R if the road condition is poor, e.g. if the
surface is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration R
if
you predominantly drive at speeds under
50 mph (80 km/h) or over 112 mph
(180 km/h)
R if you are currently using COMAND or
making a telephone call with it
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
Warning and display messages in the
multifunction display X
Activate ATTENTION ASSIST using the on-
board computer ( Y page 384).
Symbol : appears in the multifunction
display.
If ATTENTION ASSIST is active, you will be
warned
no sooner than 20 minutes after your
journey has begun. You will then hear an
intermittent warning tone twice, and the
Attention Assist: Time for a break?
message appears in the multifunction
display.
X If necessary, take a break.
X Press a to confirm the message.
On long journeys, take regular breaks in good
time to allow yourself to rest properly. If you
do not take a break and ATTENTION ASSIST
still detects typical indicators of fatigue or
increasing
lapses in concentration, you will be
warned again after 15 minutes at the earliest.
ATTENTION ASSIST is reset when you
continue your journey and starts assessing
your tiredness again if:
R you switch off the engine.
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break.356
Driving systems
Driving and parking
X
Press a.
The current selection is displayed.
X To activate/deactivate: press a
again.
When ATTENTION ASSIST (Y page 356) is
activated, the À symbol appears in the
multifunction
display when the ignition is on.
Activating/deactivating Blind Spot
Assist You can use the
Blind Spot Assist
function to activate or deactivate Blind Spot
Assist (Y page 360) or Active Blind Spot
Assist (Y page 364).
X Press = or ; on the steering wheel
to select the DriveAssist menu.
X Press 9
or : to select Blind Spot
Assist.
X Press a.
The current selection is displayed.
X To activate/deactivate: press a
again.
Activating/deactivating Lane Keeping
Assist You can use the
Lane Keeping Assist
function
to activate/deactivate Lane Keeping
Assist (Y page 362) or Active Lane Keeping
Assist (Y page 367).
X Press the = or ; button on the
steering wheel to select the DriveAssist
menu.
X Press the 9 or : button to select
Lane Keeping Assist.
X Press a.
The current selection is displayed.
X To activate/deactivate: press a
again.
If Lane Keeping Assist or Active Lane keeping
Assist is activated, the multifunction display
shows the à symbol when the ignition is
switched on. Service menu
In the Service menu you can:
R call up display messages
(Y page 388)
R check the tire pressure electronically
(Y page 497)
R call up the service due date (Y page 462)
R check the oil level ( Y page 457) Settings menu
Introduction The Settings menu can be used for:
R
switching the daytime running lamps on/
off
R switching Adaptive Highbeam Assist on/
off
R showing or hiding the additional
speedometer
R selecting the units for speed and distance
R switching the belt adjustment on/off
R activating/deactivating the radar sensor
system
Switching the daytime running lamps
on/off This function is not available in Canada.
If
you have activated the Daytime Running
Light function and the light switch is in the
$ or c position, the daytime running
lamps are switched on automatically when
the engine is running.
In the dark, the following also light up:
R the parking lamps
R the tail lamps
R the license plate lamp
R the side marker lamps
If you turn the light switch to a different
position, the corresponding lights are
switched on. If you switch off the daytime
running lamps at night, make sure that the
light switch is set to L or c.
The factory setting is On. Menus and submenus
385
On-board computer and displays Z
X
Press the = or ; button on the
steering wheel to select the Settings
menu.
X Press the 9 or : button to select
Day Running Lights.
X Press the a button to confirm.
X To activate/deactivate: press a
again.
Switching Adaptive Highbeam Assist
on/off X
Press the = or ; button on the
steering wheel to select the Settings
menu.
X Press the : or 9 button to select
Adapt. High-beam Asst..
X Press the a button to confirm.
X To activate/deactivate: press a
again.
Switching the additional speedometer
on or off An additional digital speedometer can be
shown in the multifunction display.
Vehicles with a kilometer speedometer: the
digital speedometer has mph units.
Vehicles
with a miles speedometer: the digital
speedometer has km/h units.
X Press the = or ; button on the
steering wheel to select the Settings
menu.
X Press 9 or : to select Add.
Speedometer.
X Press the a button to confirm.
X Press the a button to save the setting.
Selecting the unit of measurement for
distance The Display Unit Speed-/Odometer:
function allows you to choose whether
certain
displays appear in kilometers or miles. The selected unit of measurement for
distance applies to:
R
the analog speedometer
R the digital speedometer in the Trip menu
R the odometer and the trip odometer
R the trip computer
R the
navigation instruction in the Navi menu
R DISTRONIC PLUS
R ASSYST PLUS service interval display
The digital speedometer shows alternative
speed units ( Y page 386).
X Press the = or ; button on the
steering wheel to select the Settings
menu.
X Press the 9 or : button to select
Units.
X Press the a button to confirm.
X Press the a button to save the setting.
The unit switches between km/h and mph.
Switching the belt adjustment on/off For further information on belt adjustment
(Y page 60).
X
Press the = or ; button on the
steering wheel to select the Settings
menu.
X Press the 9 or : button to select
Belt Adjustment.
X Press the a button to confirm.
X To activate/deactivate: press a
again.
Activating/deactivating the acoustic
locking verification signal If you activate the Acoustic Lock Feedb.
function,
an audible signal sounds depending
on the vehicle's date of manufacture:
R when locking
or
R once when unlocking and three times when
locking386
Menus and submenus
On-board computer and displays
Display messages Possible causes/consequences and
M Solutions?
Coolant Low Stop
Vehicle Turn
Engine Off The coolant is too hot.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Wait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit a qualified specialist
workshop immediately. The poly-V-belt may have torn.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Open the hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do
not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Wait until the display message disappears before restarting the
engine. Otherwise, there is a risk of engine damage.
X Pay attention to the coolant temperature display.
X Visit a qualified specialist workshop. G
WARNING
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam
from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will
otherwise be damaged. Display messages
405
On-board computer and displays Z
Display messages Possible causes/consequences and
M Solutions? The engine fan is defective.
X
At coolant temperatures under 248 ‡ (120 † ), drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic. # The battery is not being charged.
Possible causes are:
R
a defective alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Open the hood.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do
not continue driving. The engine could otherwise overheat.
X Consult a qualified specialist workshop.
If the poly-V-belt is not damaged:
X Visit a qualified specialist workshop. 4
Check Engine Oil
at Next Refueling Vehicles with an oil dipstick: the oil level has dropped to the
minimum level.
X
Check the engine oil level at the latest when next refueling
(Y page 457).
X If necessary, add engine oil ( Y page 459).
X If engine oil needs to be added more often than usual, have the
engine checked at a qualified specialist workshop. 4
Check Engine Oil
Level
(Add 1 quart)
(USA only)Check
Engine Oil Level
(Add 1 Liter)
(Canada only) Vehicles without an oil dipstick: the engine oil level is too low.
X
Check the oil level (Y page 457).
X If necessary, add engine oil ( Y page 457).
X If engine oil needs to be added more often than usual, have the
engine checked at a qualified specialist workshop. Information on approved engine oils can be obtained from any qualified specialist workshop
or on the Internet at
http://www.mbusa.com (USA only).406
Display messages
On-board computer and displays