A
To switch between cruise control and var-
iable SPEEDTRONIC
B To deactivate cruise control
When you activate cruise control, the stored
speed is shown in the multifunction display
for five seconds. In the multifunction display,
the segments between the stored speed and
the maximum speed light up.
Selecting cruise control X
Check whether LIM indicator lamp ;is off.
If it is off, cruise control is already selected.
If it is not, press the cruise control lever in
the direction of arrow A.
LIM indicator lamp ;in the cruise control
lever goes out. Cruise control is selected.
Storing and maintaining the current
speed You can store the curren
tspeed if you are
driving faster than 30 km/h.
X Accelerate the vehicle to the desired
speed.
X Briefly press the cruise control lever
up : or down ?to the pressure point.
X Remove your foot from the accelerator
pedal.
Cruise control is activated. The vehicle
automatically maintains the stored speed.
i Cruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise contro lmaintains the
stored speed on downhill gradients by
automatically applying the brakes.
Storing the curren tspee dorc alling up
the last stored speed G
Risk of accident
Only call up a stored spee difyou know what
that speed is and if it is suitable for the current
traffic and driving situation. You can other- wise endanger yourself or others by uninten-
tionally triggering sudden acceleration or
braking.
X Briefly pull the cruise control lever towards
you =.
X Remove 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 aspeed X
Press the cruise control lever to the pres-
sure point, up :for a highe rspeed or
down ?for a lower speed.
X Keep the cruise control lever pressed until
the desired speed is reached.
X Release the cruise control lever.
The new speed is stored.
i Cruise control is not deactivated if you
depress the accelerator pedal. For exam-
ple, if you accelerate briefly to overtake,
cruise control adjusts the vehicle's speed
to the last speed stored after you have fin-
ished overtaking.
Making adjustments in 1 km/h incre-
ments X
Briefly 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.
Making adjustments in 10 km/h incre-
ments X
Briefly 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. Driving systems
153Driving and parking Z
Deactivating cruise control
There are several ways to deactivate cruise
control:
X
Briefly press the cruise control lever for-
wards B.
or
X Brake.
or
X Briefly press the cruise control lever in the
direction of arrow A.
Variable SPEEDTRONIC is selected. LIM
indicator lamp ;in the cruise contro llever
lights up.
Cruise control is automatically deactivated if:
R you depress the parking brake.
R you are driving at less than 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 Cruisecontrol off message in the multifunction
display for approximately five seconds.
i The last speed stored is cleared when you
switch off the engine. DISTRONIC PLUS
Important safety notes DISTRONIC PLUS regulates the speed and
automatically helps you maintain the dis-
tance to the vehicle detected in front. It
brakes automatically in order to avoid
exceeding the set speed.
On long and steep downhill gradients, espe-
cially if the vehicle is laden, you must select
shift range
1,2or 3in good time. By doing
so, you will make use of the braking effec tof
the engine, which relieves the load on the
brake syste mand prevents the brakes from
overheating and wearing too quickly. If a slower-moving vehicle is detected in front,
DISTRONIC PLU
Scauses your vehicle to
brake and maintain a preset distance to the
vehicle in front. G
Ris
kofa ccident
Do no tchange down for additional engine
braking on a slippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid. G
Risk of accident
DISTRONIC PLUS is only an aid designed to
assist driving. The driver remains fully respon-
sible for the vehicle's distance from other
vehicles, the vehicle's speed and for braking
in good time.
DISTRONIC PLUS does not react in particular
to:
R pedestrians
R stationary obstacles on the road, e.g. stop-
ped or parked vehicles
R oncoming and crossing traffic
DISTRONIC PLUS may not detect narrow vehi-
cles driving in front,e .g. motorcycles, or vehi-
cles driving on a different line. Therefore,
always pay attention to traffic conditions even
when DISTRONIC PLUS is activated. Other-
wise, you may fail to recognise dangers in
time, cause an accident and injure yourself
and others. G
Ris
kofa ccident
DISTRONIC PLUS cannot tak eaccount of road
and traffic conditions. If DISTRONIC doe snot
recognise or no longer recognises the vehicle
in front, do not activate DISTRONIC or, if it is
already active, deactivate it. This is especially
the case:
R before corners
R on filter lanes 154
Driving systemsDriving and parking
R
when changing to a lane with faster moving
traffic
R in complex driving situations or where lanes
are diverted, e.g .atroadworks on a motor-
way
DISTRONIC PLUS otherwise maintains the
current speed set by you or accelerates up to
the set speed.
DISTRONIC PLUS cannot take account of
weather conditions. Deactivate, or do not
activate, DISTRONIC PLUS:
R if the roads are slippery, snow-covered or
icy. The wheels could lose their grip when
braking or accelerating. The vehicle could
start to skid.
R if the sensors are dirty or there is poor vis-
ibility, e.g. due to snow, rain or fog. Dis-
tance control may be impaired.
Always pay attention to traffic conditions
even when DISTRONIC PLUS is activated.
Otherwise, you may fail to recognise dangers
in time, cause an accident and injure yourself
and others.
! You must deactivate the radar sensor sys-
tem in certain countries and near radio
telescope facilities. You will find further
information under "Radar sensor system"
in the index.
The radar sensor system is automatically
deactivated near radio telescope facilities
(Y page 327).
If you want DISTRONIC PLUS to assist you,
the radar sensor system must be activated
(Y page 210) and operational.
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control in the speed range between
30 km/ha nd 200 km/h. If avehicle is driving
in front of you, DISTRONIC operates in the
speed range between 0km/h and
200 km/h.
Do not use DISTRONIC PLUS while driving on
roads with steep gradients. G
Risk of accident
DISTRONIC PLUS brakes yourv ehicle up to a
maximum of 4 m/s 2
depending on its speed.
This corresponds to approximately 40% of
your vehicle's maximum braking power. You
must also apply the brakes yourself if this
braking power is not sufficient.
If DISTRONIC PLUS detects a risk of collision
with avehicle in front, an intermittent warning
tone sounds. In addition, the ·distance
warning lamp in the instrument cluster lights
up. Brake to avoid a collision.
Cruise control lever With the cruise control lever, you can operate
DISTRONIC PLUS and variable SPEED-
TRONIC.
The LIM indicator lamp on the cruise control
lever indicates which system you have selec-
ted:
R
LIM indicator lamp off: DISTRONIC PLUS
is selected.
R LIM indicator lamp on: variable SPEED-
TRONIC is selected. :
To store the curren tspeed or a higher
speed
; To set the specified minimum distance
= LIM indicator lamp
? To store the curren tspeed or call up the
last stored speed
A To store the curren tspeed or a lower
speed Driving systems
155Driving and parking Z
B
To switch between DISTRONIC PLUS and
variable SPEEDTRONIC
C To deactivate DISTRONIC PLUS
Selecting DISTRONIC PLUS X
Check whether LIM indicator lamp =is off.
If it is off, DISTRONIC PLUS is already selec-
ted.
If it is not, press the cruise control lever in
the direction of arrow B.
LIM indicator lamp =in the cruise control
lever goes out. DISTRONIC PLUS is selec-
ted.
Switching on DISTRONIC PLUS, storing
the current speed and maintaining it Important safety notes
G
Risk of accident
The vehicle can be braked when DISTRONIC
PLUS is activated. For this reason, deactivate
DISTRONIC PLUS if the vehicle is to be set in
motion by other means (e.g. in a car wash or
by towing).
In order to activat eDISTRONIC PLUS, the fol-
lowing conditions must be fulfilled:
R the engine must be started, and you have
been driving for up to two minutes.
R the parking brake must not be applied.
R yourv ehicle must not be secured by the
electric parking brake.
R ESP ®
must be activated.
R the transmission must be in position D.
R the bonnet must be closed.
R the driver's door must be closed when you
shift from Pto Dor 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 30 km/h, you
can only activate DISTRONIC PLUS if the vehi-
cle in fron
thas been detected and is shown
in the multifunction display. If the vehicle in
fron tis not shown in the multifunction display
and is no longer being detected, for example
because it has changed lanes, DISTRONIC
PLUS is deactivated and atone sounds.
X Briefly pull the cruise control lever towards
you ?or press it up :or down Ato the
pressure point.
DISTRONIC PLUS is selected.
X Keep the cruise control lever pressed
up : or down Auntil 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 suspended message appears in the multifunction dis-
play. The set distance to a slower-moving
vehicle in front will then not be maintained.
You will be driving at the speed you deter-
mine by the position of the accelerator
pedal.
Activating when driving towards asta-
tionary vehicle
If the vehicle in front of you is stationary, you
can only activate DISTRONIC PLU Sonce your
vehicle is stationary as well.
X Briefly pull the cruise control lever towards
you ?.
DISTRONIC PLU Sis selected.
i DISTRONIC PLUS can only be activated at
under 30 km/h if a vehicle in front has been
detected. Therefore, the DISTRONIC PLUS
distance display in the instrument cluster
should be activated. 156
Driving systemsDriving and parking
X
Keep the cruise control lever pressed
up : or down Auntil 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 159).
Pulling away
X If the vehicle in front pulls away: remove
yourf oot 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 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. G
Risk of accident
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 vehi-
cle's distance from other vehicles, the speed
being driven and for braking in good time. Changing lanes
If you wish to change to the passing lane (in
left-hand-drive vehicles, the passing lane is
the left-hand lane), DISTRONIC PLUS sup-
ports you if:
R
you are driving faster than 60 km/h
R DISTRONIC PLUS is maintaining the dis-
tance to a vehicle in front
R you switch on the appropriate turn signals
R DISTRONIC PLUS does not detect a danger
of collision
If these conditions are met, your vehicle is
accelerated. Acceleration will be interrupted
if changing lanes takes too long or if the dis-
tance between your vehicle and the vehicle in
front becomes too small. G
Risk of accident
DISTRONIC PLUS and Active Blind Spot Assist
are only an aid designed to assist driving.
They do not relieve you of the responsibility
of paying attention. The driver remains fully
responsible for the vehicle's distance from
other vehicles, the vehicle's speed and for
braking in good time. Always pay attention to
traffic conditions and your surroundings. Oth-
erwise, you may fail to recognise dangers in
time, cause an accident and injure yourself
and others.
Vehicles with COMAND APS/
Audio 50 APS
i The following functions are not opera-
tional in all countries.
DISTRONIC PLUS uses additional information
from your navigation system so that it can
react appropriately to certain traffic situa-
tions. This is the case if, while following a
vehicle, DISTRONIC PLUS is active and you:
R approach or drive through aroundabout
R approach a T junction
R turn off at a motorway exit
Even if the vehicle in front leaves the detec-
tion range, DISTRONIC PLUS temporarily
maintains the current driving speed and does Driving systems
157Driving and parking Z
not accelerate. This is based on the current
map data in the navigation system.
Roundabou
t(example)
The curren tspeed is maintained:
R approximately 10 seconds before the
roundabout/T junction and for approx-
imately 1.5 seconds when driving on the
roundabout
R approximately 12 seconds before reaching
a motorway exit and approximately 4sec-
onds after the motorway exit
Afterwards, the vehicle accelerates back to
the set speed you specified.
Stopping G
Risk of accident
Never get out of the vehicle when DISTRONIC
PLUS is activated.
DISTRONIC PLUS must also never be oper-
ated, activated or deactivated by a passenger
or from outside the vehicle.
DISTRONIC PLUS does not replace the park-
ing brake and must not be used for parking.
The DISTRONIC PLUS braking effect is can-
celled and the vehicle can start moving if:
R DISTRONIC PLUS is deactivated using the
cruise control lever.
R you accelerate.
R there is a malfunction in the system or an
interruption in the power supply, e.g. bat-
tery failure. R
the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
R the battery is disconnected.
If you wish to leave the vehicle or park it,
deactivate DISTRONIC PLUS and secure the
vehicle against rolling away.
If DISTRONIC PLUS detects that the vehicle
in fron tis stopping, it brakes your vehicle until
it is stationary.
Once your vehicle is stationary, it remains
stationary and you do not need to depress the
brake.
i Depending on the specified minimum dis-
tance, your vehicle will come to a standstill
at a sufficient distance behind the vehicle
in front.T he specified minimum distance is
set using the control on the cruise control
lever.
When DISTRONIC PLUS is activated, the
transmission is shifted automatically to posi-
tion Pif:
R the driver's door is open and the driver's
seat belt is unfastened.
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
R the bonnet is opened.
R a system fault occurs.
R the power supply is not sufficient.
Setting aspeed X
Press the cruise control lever to the pres-
sure point, up :for a highe rspeed or
down Afor a lower speed.
X Keep the cruise control lever pressed until
the desired speed is reached.
X Release the cruise control lever.
The new speed is stored. DISTRONIC PLUS
is activated and adjusts the vehicle's speed
to the new speed stored. 158
Driving systemsDriving and parking
Making adjustments in 1 km/h incre-
ments X
Briefly press the cruise control leve rto the
pressure point, up :for a higher speed or
down Afor a lower speed.
The last speed stored is increased or
reduced.
Making adjustments in 10 km/h incre-
ments X
Briefly press the cruise control lever
beyond the pressure point, up :for a
higher speed or down Afor a lower speed.
The last speed stored is increased or
reduced.
Storing the current speed or calling up
the stored speed G
Risk of accident
Only call up a stored speed if you know what
that speed is and if it is suitable for the current
traffic and driving situation. You can other-
wise endanger yourself or others by uninten-
tionally triggering sudden acceleration or
braking.
X Briefly pull the cruise control lever towards
you ?.
X Remove your foot from the accelerator
pedal.
DISTRONIC PLUS is activated. The first
time it is activated, the current speed is
stored. Otherwise, it sets the vehicle cruise
speed to the previously stored value.
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 func-
tion, 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 160). X
To increase: turn control;in direction
=.
DISTRONIC PLUS then maintains a greater
distance between your vehicle and the
vehicle in front.
X To decrease: turn control;in direc-
tion :.
DISTRONIC PLUS then maintains a shorter
distance between your vehicle and the
vehicle in front.
i Make sure that you maintain the mini-
mum distance to the vehicle in front as
required by law. Adjust the distance to the
vehicle in front if necessary.
DISTRONIC PLUS displays in the speed-
ometer When DISTRONIC PLUS is activated, one or
two segments
;in the set speed range light
up.
i For design reasons, the speed displayed
in the speedometer may differ slightly from
the speed set for DISTRONIC PLUS. Driving systems
159Driving and parking Z
If DISTRONIC PLUS detects
avehicle in front,
segments ;between speed of the vehicle in
front :and stored speed =light up.
DISTRONIC PLUS displays in the multi-
function display General notes
In the Assistance menu (Y
page 203) of the
on-board computer, you can select the dis-
tance display and activate or deactivate the
PRE-SAFE ®
Brake.
Display when DISTRONIC PLUS is deacti-
vated
X Select the Distance display function
using the on-board computer
(Y page 203).
When DISTRONIC PLUS is deactivated, you
will see the following in the multifunction dis-
play: :
Symbol for activated PRE-SAFE ®
Brake
; Vehicle in front, if detected
= Distance indicator: current distance to
the vehicle in front
? Specified minimum distance to the vehi-
cle in front; adjustable
A Own vehicle
Display when DISTRONIC PLUS is activa-
ted
X Select the Distance display function
using the on-board computer
(Y page 203). You will see the stored speed for about five
seconds when you activate DISTRONIC PLUS.
After this time, you will see the following in
the multifunction display while DISTRONIC
PLUS is activated:
:
DISTRONIC PLUS activated
; Own vehicle
= Specified minimum distance to the vehi-
cle in front; adjustable
? Vehicle in front, if detected
Deactivating DISTRONIC PLUS There are several ways to deactivate DIS-
TRONIC PLUS:
X
Briefly press the cruise control lever for-
wards :.
or
X Brake, unless the vehicle is stationary. 160
Driving systemsDriving and parking