Page 169 of 390
When you activate cruise control, the stored
speed is shown in the multifunction display for
five seconds.
Activation conditions To activate cruise control, all of the following
activation conditions must be fulfilled: R
the electric parking brake must be released. R
you are driving faster than 20 mph (30 km/h). R
ESP ®
must be active, but not intervening.R
the transmission must be in position D .R
DSR must be deactivated. R
the Offroad Plus drive program must be deac-
tivated (vehicles with the Off-Road Engineer-
ing package).
Storing, maintaining and calling up a
speed
Storing and maintaining a speed X
Accelerate the vehicle to the desired speed. X
Briefly press the cruise control lever up C or
down
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R
you activat e th e Offroad Plus progra m (vehi-
cle s wit h th e Off-Road Engineerin g package)R
you shift th e transmission to position N while
drivin g
If cruise control is deactivated, you will hear a
warnin g tone . You will see th e Cruise Con ‐
tro l Off message in th e multifunction display
for approximately fiv e seconds.
i Whe n you switch off th e engine, th e last
speed store d is cleared .
Distance Pilot DISTRONIC
Gene ra l notesDistanc e Pilo t DISTRONI C regulates th e speed
and automatically help s you maintai n th e dis-
tance to th e vehicl e detecte d in front. Vehicles
are detecte d wit h th e aid of th e rada r sensor
system. Distanc e Pilo t DISTRONI C brakes auto-
matically so that th e set speed is no t exceeded .
You mus t select a lower gear in goo d time on
lon g and steep downhill gradients , especially if
th e vehicl e is laden or towin g a trailer . By doin g
so, you will mak e use of th e brakin g effec t of th e
engine. This relieves th e load on th e brak e sys-
te m and prevents th e brakes from overheating
and wearin g to o quickly.
If Distanc e Pilo t DISTRONI C detects that there is
a ris k of a collision , you will be warned visually
and acoustically. Without your intervention , Dis-
tance Pilo t DISTRONI C canno t preven t a colli-
sion . An intermittent warnin g tone will then
soun d and th e distanc e warnin g lamp will ligh t
up in th e instrumen t cluster. Brake immediately
in order to increase th e distanc e to th e vehicl e in
fron t or tak e evasive action provided it is saf e to
do so.
Fo r Distanc e Pilo t DISTRONI C to assist you
when driving, th e rada r sensor system mus t be
operational.
Dis tanc e P
ilo t DISTRONI C operate s in th e range
between 0 mph (0 km/h) and 12 0 mph
(20 0 km/h).
Do no t use Distanc e Pilo t DISTRONI C while driv-
in g on roads wit h steep gradients .
Since Distanc e Pilo t DISTRONI C transmit s rada r
waves, it can resemble th e rada r detectors of
th e responsibl e authorities. You can refer to th e
relevan t chapter in th e Operator' s Manual if
question s are asked about this. i US A only:
This device has been approve d by th e FCC as
a "Vehicular Radar System". The rada r sensor
is intended for use in an automotive rada r
system only. Removing, tamperin g with, or
altering th e device will voi d any warranties,
and is no t permitte d by th e FCC. Do no t tam -
per with, alter, or use in any non-approve d
way.
An y unauthorize d modification to this device
could voi d th e user’s authorit y to operate th e
equipment.
i Canada only: This device complies wit h
RSS-210 of Industry Canada. Operation is
subjec t to th e followin g tw o conditions:
1. This device may no t caus e harmful inter-
ference , and
2. This device mus t accept any interferenc e
received, includin g interferenc e that may
caus e undesired operation of th e device .
Removal, tampering, or altering of th e d evice
w
ill voi d any warranties, and is no t permitted.
Do no t tamper with, alter, or use in any non-
approve d way.
An y unauthorize d modification to this device
could voi d th e user's authorit y to operate th e
equipment.
Imp or tant safety notes
G WARNIN G
Distanc e Pilo t DISTRONI C does no t reac t to :R
people or animals R
stationary objects on th e road, e.g. stoppe d
or parked vehicles R
oncomin g vehicles and crossin g traffic
As a result , Distanc e Pilo t DISTRONI C may
neither giv e warnings no r interven e in suc h
situations. There is a ris k of an accident.
Always pay careful attention to th e traffic sit -
uation and be read y to brake.
G WARNIN G
Distanc e Pilo t DISTRONI C canno t always
clearly identify other roa d user s and complex
traffic situations.168
Driving systems
Driving and parking
Page 171 of 390

In such cases, Distance Pilot DISTRONIC may: R
give an unnecessary warning and then
brake the vehicle R
neither give a warning nor intervene R
accelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, especially if Distance Pilot DISTRONIC
warns you.
G WARNING
Distance Pilot DISTRONIC brakes your vehicle
with up to 50% of the maximum possible
deceleration. If this deceleration is not suffi-
cient, Distance Pilot DISTRONIC alerts you
with a visual and acoustic warning. There is a
risk of an accident.
Apply the brakes yourself in these situations
and try to take evasive action.
! When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or similar situations: R
when towing the vehicle R
in the car wash
If you fail to adapt your driving style, Distance
Pilot DISTRONIC can neither reduce the risk of
an accident nor override the laws of physics.
Distance Pilot DISTRONIC cannot take into
account road, weather or traffic conditions. Dis-
tance Pilot DISTRONIC 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 Distance Pilot DISTRONIC: R
in road and traffic conditions which do not
allow you to maintain a constant speed, e.g. in
heavy traffic or on winding roads R
on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid R
when there is poor visibility, e.g. due to fog,
heavy rain or snow Distance Pilot DISTRONIC may not detect nar-
row vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can be
impaired if: R
there is dirt on the sensors or anything else
covering the sensors R
there is snow or heavy rain R
there is interference by other radar sources R
there are strong radar reflections, for exam-
ple, in parking garages
If Distance Pilot DISTRONIC no longer detects a
vehicle in front, it may unexpectedly accelerate
to the speed stored.
This speed may: R
be too high if you are driving in a filter lane or
an exit lane R
be so high when driving in the right-hand lane
that you overtake vehicles in the left-hand
lane R
be so high when driving in the left-hand lane
that you overtake vehicles in the right-hand
lane
If there is a change of drivers, advise the new
driver of the speed stored.
Cruise control lever
C
Activates or increases speed
D
Activates or reduces speed
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Activating Distance Pilot DISTRONIC Acti va tion conditionsTo activat e Distanc e Pilo t DISTRONIC, th e fol -
lowin g condition s mus t be fulfilled :R
th e engin e mus t be started. It may tak e up to
two minute s of drivin g before Distanc e Pilo t
DISTRONI C is read y for use.R
th e electric parking brak e mus t be released.R
ES P ®
mus t be active , but no t intervening .R
th e transmission mus t be in position D .R
th e driver's door mus t be closed when you
shif t from P to D or your seat belt mus t be
fastened. R
th e front-passenger door and rear door s mus t
be closed. R
th e Offroad Plus drive program mus t be deac -
tivated (vehicles wit h th e Off-Road Engineer -
ing package). R
DS R mus t be deactivated.R
th e vehicl e mus t no t skid.
Acti va tingX
Briefly pull th e cruise control lever toward s
you
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Selecting the drive program Distance Pilot DISTRONIC supports a sporty
driving style if you have selected the Sport or
Sport Plus drive program ( Y
page 143). Accel-
eration behind the vehicle in front or to the set
speed is then noticeably more dynamic. If you
have selected the Comfort drive program, the
vehicle accelerates more gently. This setting is
recommended in stop-and-start traffic.
Changing lanes If you change to the overtaking lane, Distance
Pilot DISTRONIC supports you if: R
you are driving faster than 45 mph (70 km/h) R
you switch on the appropriate turn signal R
Distance Pilot DISTRONIC does not currently
detect a danger of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted if
changing lanes takes too long or if the distance
between your vehicle and the vehicle in front
becomes too small.
i When you change lanes, Distance Pilot
DISTRONIC monitors the right lane (in left-
side traffic) or the left lane (in right-side traf-
fic).
Stopping
G WARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if: R
there is a malfunction in the system or in
the voltage supply. R
DISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by a vehi-
cle occupant or from outside the vehicle. R
the electrical system in the engine com-
partment, the battery or the fuses have
been tampered with. R
the battery is disconnected. R
the accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
DISTRONIC PLUS and secure the vehicle
against rolling away. If Distance Pilot DISTRONIC detects that the
vehicle in front is stopping, it brakes your vehicle
to a stop.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
After a time, the electric parking brake secures
the vehicle and relieves the service brake.
Depending on the specified minimum distance,
your vehicle will come to a standstill at a suffi-
cient distance behind the vehicle in front. The
specified minimum distance is set using the
control on the cruise control lever.
The transmission is shifted automatically to
position P if, with Distance Pilot DISTRONIC
activated and the vehicle stationary: 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.
The electric parking brake secures the vehicle
automatically if, with Distance Pilot DISTRONIC
activated and the vehicle stationary: R
a system malfunction occurs. R
the power supply is not sufficient.
On steep uphill or downhill inclines or if there is
a malfunction, the transmission may also be
automatically shifted into position P .
Setting a speed Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set. X
Press the cruise control lever up C for a
higher speed or down
Page 174 of 390
i If you accelerate to overtake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over-
taking.
Setting a specified minimum distance
You can set the specified minimum distance for
Distance Pilot DISTRONIC by varying the time
span between one and two seconds. With this
function you can set the minimum distance that
Distance Pilot DISTRONIC maintains to the vehi-
cle in front, dependent on vehicle speed. You
can see this distance in the multifunction dis-
play ( Y
page 173).X
To increase: turn control D in direction
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