XBriefly pull the cruise control lever towardsyou :.
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
Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set.
XPress the cruise control lever up :for a
higher speed or down ;for a lower speed.
XTo adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly
press the cruise control lever up :or
down ;to the pressure point.
Every time the cruise control lever is
pressed up :or down ;the last speed
stored is increased or reduced.
XTo adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly
press the cruise control lever up :or
down ;to the pressure point.
Every time the cruise control lever is
pressed up :or down ;the last speed
stored is increased or reduced.
iCruise control is not deactivated if you
depress the accelerator pedal. If you accel- erate to overtake, cruise control adjusts
the vehicle's speed to the last speed stored
after you have finished overtaking.
Deactivating cruise control
There are several ways to deactivate cruise
control:
XBriefly press the cruise control lever for-
wards :.
or
XBrake.
Cruise control is automatically deactivated if:
Ryou engage the electric parking brake
Ryou are driving at less than 20 mph
(30 km/h)
RESP®intervenes or you deactivate ESP®
Ryou shift the transmission to position N
while driving
If cruise control is deactivated, you will hear a
warning tone. You will see the Cruise Con‐
trol Offmessage in the multifunction dis-
play for approximately five seconds.
iWhen you switch off the engine, the last
speed stored is cleared.
DISTRONIC PLUS
General notes
DISTRONIC PLUS regulates the speed and
automatically helps you maintain the dis-
tance to the vehicle detected in front. Vehi-
cles are detected with the aid of the radar
sensor system. DISTRONIC PLUS brakes
automatically so that the set speed is not
exceeded.
Driving systems183
Driving and parking
Z
Change into a lower gear in good time on long
and steepdownhill gradients. This isespe-
cial ly impo rtantifthe vehicle is laden. By
doin g so, you willmake use of the braking
effect of the engine. This relieves the load on
the brake system and prevents the brakes
from overheating and wearing too quickly.
If DI ST RONIC PLUS detects that there isa risk
of a co llision, you will be warned visually and
acoustically. DI STRONIC PLUS cannot pre-
vent a co llisionwit hout your intervention. An
interm ittent warning tone will then sound and
the distance warning lamp will light up inthe
instrument cluster. Brake immediately in
order to increase the distance to the vehicle
in front or take evasive action provided it is
safe to doso.
DI ST RONIC PLUS operates inrange between
0 mph (0 km/h) and 120 mph (200 km/h).
Do not use DI STRONIC PLUS while driving on
roads with steep gradients.
As DI STRONIC PLUS transmits radar waves, it
can resemb lethe radar detectors of the
responsible authorities. You can refer to the
relevant chapter inthe Operator's Manual if
questions are asked about this.
iUSA only: This device has been approved
by the FCC as a "Vehicular Radar System".
The radar sensor isintended for use inan
automotive radar system on ly. Rem
oval,
tampering, or altering of the device willvoid
any warranties, and is not permitted by the
FCC. Do not tamper with, alter, or use in
any non- approved way.
Any unauthorized modification to this
device could void the user's authority to
operate the equipment.
iCanada only: This device co mplieswit h
RSS -210 of Industry Canada. Operation is
subject to the fol lowing two cond itions:
1. This device may not cause harmful inter-
ference, and
2. This device must accept any interference
receive d,inc ludin g interference that may
cause undesired operation of the device. Remo
val,tampering, or altering of the
device willvoid any warranties, and isnot
permitte d.Do not tamper with, alter, or use
in any non-approved way.
Any unauthorized mod ification to th is
device could void the user's authority to
operate the equipment.
Important safety notes
GWARNIN G
DISTRONI CPLU Sdoes no treac tto :
Rpeople or animals
Rstationary obstacle son th eroad ,e.g. stop-
ped or parked vehicles
Roncomin gand crossing traffic
As aresult ,DISTRONI CPLU Smay neither giv e
warning sno rinterven ein suc hsituations.
Ther eis aris kof an accident.
Always pay careful attentio nto th etraffic sit -
uation and be read yto brake.
GWARNIN G
DISTRONI CPLU Scanno talways clearly iden -
tif yother road user sand comple xtraffic sit -
uations.
In suc hcases, DISTRONI CPLU Smay:
Rgiv ean unnecessar ywarning and then
brak eth evehicl e
Rneither giv e awarning no rinterven e
Raccelerate or brak eune xpectedly
Ther eis aris kof an accident.
Continue to driv ecarefully and be read yto
brake, in particular when warned to do so by
DISTRONI CPLUS.
GWARNIN G
DISTRONI CPLU Sbrakes your vehicl ewit hup
to 50 %of the maximum possible deceleration.
If this braking force is insufficient, DISTRONIC
PLUS warns you visually and audibly. There is a risk of an accident.
In such cases, apply the brakes yourself and
try to take evasive action.
184Driving systems
Driving and parking
!If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations.
To prevent damage to the vehicle, deacti-
vate DISTRONIC PLUS and the HOLD func-
tion in the following or other similar situa-
tions:
Rwhen towing the vehicle
Rin the car wash
If you fail to adapt your driving style,
DISTRONIC PLUS can neither reduce the risk
of accident nor override the laws of physics.
DISTRONIC PLUS cannot take into account
the road, traffic and weather conditions.
DISTRONIC PLUS is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good
time and for staying in your lane.
Do not use DISTRONIC PLUS:
Rin road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
Ron slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
Rwhen there is poor visibility, e.g. due to fog,
heavy rain or snow
DISTRONIC PLUS may not detect narrow
vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can
be impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is snow or heavy rain
Rthere is interference by other radar sources
Rthere are strong radar reflections, for
example, in parking garages
If DISTRONIC PLUS no longer detects a vehi- cle in front, DISTRONIC PLUS may unexpect-
edly accelerate the vehicle to the stored
speed. This speed may:
Rbe too high if you are driving in a filter lane
or an exit lane
Rbe so high in the right lane that you pass
vehicles driving on the left (left-hand drive
countries)
Rbe so high in the left lane that you pass
vehicles driving on the right (right-hand
drive countries)
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
:To activate or increase speed
;To activate or reduce speed
=To deactivate DISTRONIC PLUS
?To activate at the current speed/last
stored speed
ATo set the specified minimum distance
Activating DISTRONIC PLUS
Activation conditions
In order to activate DISTRONIC PLUS, the fol-
lowing conditions must be fulfilled:
Rthe engine must be started. It may take up
to two minutes after pulling away before
DISTRONIC PLUS is operational.
Rthe electric parking brake must be
released.
RESP®must be active, but not intervening.
RActive Parking Assist must not be activa-
ted.
Rthe transmission must be in position D.
Driving systems185
Driving and parking
Z
If you wish to exit the vehicle, always turn off
DISTRONIC PLUS and secure the vehicle
against rolling away.
For further information on deactivating
DISTRONIC PLUS (
Ypage 190).
If DISTRONIC PLUS detects that the vehicle in
front is 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.
iAfter a time, the electric parking brake
secures the vehicle and relieves the service
brake.
iDepending on the specified minimum dis-
tance, your vehicle will come to a standstill
at a sufficient distance behind the vehicle in
front. The 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:
Rthe driver's seat belt is not fastened and the
driver's door is open.
Rthe engine is switched off, unless it is auto-
matically switched off by the ECO start/
stop function.
The electric parking brake secures the vehicle automatically if DISTRONIC PLUS is activated
when the vehicle is stationary and:
Ra system malfunction occurs.
Rthe power supply is not sufficient.
If a malfunction occurs, the transmission may
also shift into position Pautomatically.
Setting a speed
XPress the cruise control lever up :for a
higher speed or down ;for a lower speed.
XTo adjust the set speed in 1 mph incre-
ments (1 km/h increments): briefly
press the cruise control lever up :or
down ;to the pressure point.
Every time the cruise control lever is
pressed up :or down ;the last speed
stored is increased or reduced.
XTo adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly
press the cruise control lever up :or
down ;to the pressure point.
Every time the cruise control lever is
pressed up :or down ;, the last speed
stored is increased or reduced.
iIf you accelerate to overtake, DISTRONIC
PLUS adjusts the vehicle's speed to the last
speed stored after you have finished over-
taking.
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
(
Ypage 189).
iMake sure that you maintain the mini-
mum distance to the vehicle in front as
188Driving systems
Driving and parking
If Steering Assist and Stop&Go Pilot are acti-
vated but is not ready for a steering interven-
tion, steering wheel symbol:appears in
gray. If the system provides you with support
by means of steering interventions, sym-
bol :is shown in green.
Deactivating Steering Assist and Stop&Go
Pilot
XPress button ;.
Indicator lamp :goes out. The DTR+:
SteeringAssist.Offmessage appears
in the multifunction display. Steering Assist
and Stop&Go Pilot are deactivated.
When DISTRONIC PLUS is deactivated or not
available, Steering Assist and Stop&Go Pilot
are deactivated automatically.
HOLD function
General notes
The HOLD function can assist the driver in the
following situations:
Rwhen pulling away, especially on steep
slopes
Rwhen maneuvering on steep slopes
Rwhen 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.
Important safety notes
GWARNING
When leaving the vehicle, it can still roll away despite being braked by the HOLD function if:
Rthere is a malfunction in the system or in
the voltage supply.
Rthe HOLD function has been deactivated by
pressing the accelerator pedal or the brake
pedal, e.g. by a vehicle occupant.
Rthe electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
Rthe battery is disconnected
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
the HOLD function and secure the vehicle
against rolling away.
!If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes automati-
cally in certain situations.
To prevent damage to the vehicle, deacti-
vate DISTRONIC PLUS and the HOLD func-
tion in the following or other similar situa-
tions:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function
(
Ypage 195).
Activation conditions
You can activate the HOLD function if all of
the following conditions are fulfilled:
Rthe vehicle is stationary.
Rthe engine is running or if it has been auto-
matically switched off by the ECO start/
stop function.
Rthe driver's door is closed or your seat belt
is fastened.
Rthe electric parking brake is released.
Rthe transmission is in position D,R or N.
RDISTRONIC PLUS is deactivated.
194Driving systems
Driving and parking
you use wintertires (M+S tire s), with snow
chains if necessary.
PARKTRONIC
Important safety notes
PARKTRONIC is an electronic parking aid with ultrasonic sensors. It monitors the area
around your vehicle using six sensors in the
front bumper and six sensors in the rear
bumper. PARKTRONIC indicates visually and
audibly the distance between your vehicle
and an object.
PARKTRONIC is only an aid. It is not a replace-
ment for your attention to your immediate
surroundings. You are always responsible for
safe maneuvering, parking and exiting a park-
ing space. When maneuvering, parking or
pulling out of a parking space, make sure that
there are no persons, animals or objects in
the area in which you are maneuvering.
!When parking, pay particular attention to
objects above or below the sensors, such
as flower pots or trailer drawbars.
PARKTRONIC does not detect such objects
when they are in the immediate vicinity of
the vehicle. You could damage the vehicle
or the objects.
The sensors may not detect snow and other
objects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic
car wash, the compressed-air brakes on a
truck or a pneumatic drill could cause
PARKTRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
PARKTRONIC is activated automatically when
you:
Rswitch on the ignition
Rshift the transmission to position D,Ror N
PARKTRONIC is deactivated at speeds above
11 mph (18 km/ h). It is reactivated at lower
speeds.
Range of the sensors
General notes
PARKTRONIC does not take objects into con-
sideration that are:
Rbelow the detection range, e.g. people, ani-
mals or objects.
Rabove the detection range, e.g. overhang-
ing loads, truck overhangs or loading
ramps.
:Sensors in the front bumper, left-hand
side (example)
The sensors must be free from dirt, ice or
slush. They can otherwise not function cor-
198Driving systems
Driving and parking
:Detected parking space on the left
;Parking symbol
=Detected parking space on the right
Active Parking Assist is switched on automat-
ically when driving forwards. The system is
operational at speeds of up to approximately
22 mph (35 km/h). While in operation, the
system independently locates and measures
parking spaces on both sides of the vehicle.
Active Parking Assist will only detect parking
spaces:
Rparallel or at right angles to the direction of
travel
Rthat are parallel to the direction of travel
and at least 59 in (1.5 m) wide
Rthat are parallel to the direction of travel
and at least 39.5 in (1.0 m) longer than your
vehicle
Rthat are at right angles to the direction of
travel and at least 39.5 in (1.0 m) wider
than your vehicle
iNote that Active Parking Assist cannot
measure the size of a parking space if it is at
right angles to the direction of travel. You
will need to judge whether your vehicle will
fit into the parking space.
When driving at speeds below 19 mph
(30 km/h), you will see the parking symbol as
a status indicator in the instrument cluster.
When a parking space h
as been detected, an
arrow towards the right or the left also
appears. By default, Active Parking Assist
only displays parking spaces on the front-
passenger side. Parking spaces on the driv- er's side are displayed as soon as the turn
signal on the driver's side is activated. When
parking on the driver's side, this must remain
switched on until you acknowledge the use of
Active Parking Assist by pressing the
a
button on the multifunction steering wheel.
The system automatically determines
whether the parking space is parallel or at
right angles to the direction of travel.
A parking space is displayed while you are
driving past it, and until you are approx-
imately 50 ft (15 m) awayfrom it .
Parking
GWARNING
If you leave the vehicle when it is only being
braked by Active Parking Assist it could roll
away if:
Rthere is a malfunction in the system or in
the voltage supply.
Rthe electrical system in the engine com-
partment, the battery or the fuses have
been tampered with.
Rthe battery is disconnected.
Rthe accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
Before leaving the vehicle, always secure it
against rolling away.
iWhen PARKTRONIC detects obstacles,
Active Parking Assist brakes automatically
during the parking process. You are respon-
sible for braking in good time.
XStop the vehicle when the parking space
symbol shows the desired parking space in
the instrument cluster.
XShift the transmission to position R.
The Start Park Assist?Yes: OKNo:
% message appears in the multifunction
display.
Driving system s203
Driving an d parking
Z
XTo cancel the procedure:press the%
button on the multifunction steering wheel or pull away.
or
XTo park using Active Parking Assist:
press the abutton on the multifunction
steering wheel.
The Park Assist Active Accelerate
and BrakeObserve Surroundingsmes-
sage appears in the multifunction display.
XLet go of the multifunction steering wheel.
XBack up the vehicle, being ready to brake at
all times. When backing up, drive at a speed
below approximately 6 mph (10 km/h).
Otherwise Active Parking Assist will be can-
celed.
Active Parking Assist brakes the vehicle to
a standstill when the vehicle approaches
the rear border of the parking space.
Maneuvering may be required in tight park- ing spaces.
The Park Assist Active Select D
ObserveSurroundingsmessage appears in
the multifunction display.
XShift the transmission to position Dwhile
the vehicle is stationary.
Active Parking Assist immediately steers in
the other direction.
The Park Assist Active Accelerate
and BrakeObserve Surroundingsmes-
sage appears in the multifunction display.
iYou will achieve the best results by wait-
ing for the steering procedure to complete
before pulling away.
XDrive forwards and be ready to brake at all
times.
Active Parking Assist brakes the vehicle to
a standstill when the vehicle approaches
the front border of the parking space.
Maneuvering may be required in tight park-
ing spaces.
The Park Assist Active Select R
ObserveSurroundingsmessage appears in
the multifunction display. As soon as the parking procedure is com-
plete, the
Park
AssistSwitchedOffmes-
sage appears and a warning tone sounds. The
vehicle is now parked.
The vehicle is kept stationary without the
driver having to depress the brake pedal. The
braking effect is canceled when you depress
the accelerator pedal.
Active Parking Assist no longer supports you
with steering interventions and brake appli-
cations. When Active Parking Assist is fin-
ished, you must steer and brake again your-
self. PARKTRONIC is still available.
Parking tips:
RThe way your vehicle is positioned in the
parking space after parking is dependent
on various factors. These include the posi-
tion and shape of the vehicles parked in
front and behind it and the conditions of the
location. It may be the case that Active
Parking Assist guides you too far into a
parking space, or not far enough into it. In
some cases, it may also lead you across or
onto the curb. If necessary, you should can-
cel the parking procedure with Active Park-
ing Assist.
RYou can also select preselect transmission
position D. The vehicle redirects and does
not drive as far into the parking space.
Should the transmission change take place
too early, the parking procedure will be
canceled. A sensible parking position can
no longer be ach ieve
d from this position.
Exiting a parking space
In order that Active Parking Assist can sup-
port you when you exit the parking space:
Rthe border of the parking space must be
high enough at the front and the rear. A
curb is too small, for example.
Rthe border of the parking space must not be
too wide, as the position of the vehicle must
not exceed an angle of 45° to the starting
204Driving systems
Driving an
d parking