
Distance Pilot DISTRONIC with Steering
Pilot General notes
Distance Pilot DISTRONIC with Steering Pilot
aids you in keeping the vehicle in the centre of
the driving lane by means of moderate steering
interventions in a speed range from
0 - 200 km/h.
It monitors the area in front of your vehicle by
means of camera system :at the top of the
windscreen.
In a speed range from 0 - 60 km/h, the advanced automatic pulling away function focuses on thevehicle in front, taking into account lane mark-
ings, e.g. when following vehicles in a traffic jam.
At speeds of more than 60 km/h, Steering Pilot
focuses on detected lane markings (left and
right), only focusing on the vehicle in front if
detected lane markings are not present.
If these conditions are not present, Steering
Pilot cannot provide assistance.
Distance Pilot DISTRONIC must be active in
order for the function to be available.
Important safety notes If you fail to adapt your driving style, Distance
Pilot DISTRONIC and Steering Pilot can neither
reduce the risk of an accident nor override the
laws of physics. It cannot take into account
road, weather or traffic conditions. Distance
Pilot DISTRONIC with Steering Pilot 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 lane.
Distance Pilot DISTRONIC with Steering Pilot
does not detect road and traffic conditions and
does not detect all road users. If you are follow-
ing a vehicle that is driving towards the edge of the carriageway, your vehicle could come into
contact with the kerb or other road boundaries. Be particularly aware of other road users, e.g.
cyclists, that are directly next to your vehicle.
Obstacles such as traffic pylons on the lane or
projecting out into the lane are not detected.
An inappropriate steering intervention, e.g. after you have intentionally driven over a lane mark-
ing, can be corrected at any time if you steer
slightly in the opposite direction.
DISTRONIC PLUS with Steering Pilot cannot
continuously keep your vehicle in lane. In somecases, the steering intervention is not sufficientto bring the vehicle back to the lane. In such
cases, you must steer the vehicle yourself to
ensure that it does not leave the lane.
The support offered by the system may be
impaired if:
R visibility is poor, e.g. due to insufficient illu-
mination of the road, or due to snow, rain, fog
or spray
R there is glare, e.g. from oncoming traffic, the
sun or reflection from other vehicles (e.g. if
the road surface is wet)
R the windscreen is dirty, misted up, damaged
or covered, for instance by a sticker, in the
vicinity of the camera
R no or several, unclear lane markings are pres-
ent for one lane, e.g. in a construction area
R the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
R the distance to the vehicle in front is so small
that the lane markings cannot be detected
R the lane markings change quickly, e.g. lanes
branch off, cross one another or merge
R the road is narrow and winding
R there are highly variable shade conditions on
the road
The system is switched to passive and no longer assists you by performing steering interventions
if:
R you actively change lane
R you switch on the turn signal
R you take your hands off the steering wheel or
do not steer for a prolonged period of time
i After you have finished changing lanes,
Steering Pilot is automatically active once
more. Driving syste
ms
191Driving an d parking Z

Steering Pilot cannot provide assistance:
R On very sharp corners
R When you are towing a trailer
R A loss of tyre pressure or a defective tyre has
been detected and displayed
Observe the important safety notes on Distance Pilot DISTRONIC (Y page 184).
The steering interventions are carried out with a
limited steering moment. The system requires
the driver to keep his hands on the steering
wheel and to steer himself.
If you do not steer yourself or if you take your
hands off the steering wheel for a prolonged
period of time, the system will first alert you with a visual warning. A steering wheel symbol
appears in the multifunction display. If you have
still not started to steer and have not taken hold
of the steering wheel after five seconds at the
latest, a warning tone also sounds to remind you to take control of the vehicle. Steering Pilot is
then switched to passive. Distance Pilot
DISTRONIC remains active.
Activating Steering Pilot
X Activate Distance Pilot DISTRONIC with
Steering Pilot using the on-board computer
(Y page 250).
The Steering
Steering Pilot PilotOn
Onmessage appears in
the multifunction display. Steering Pilot is
activated.
Information in the multifunction display If Steering Pilot is activated but not ready for a
steering intervention, steering wheel symbol :
appears in grey. If the system provides you with support by means of steering interventions,
symbol :is shown in green.
Deactivating Steering Pilot
X Deactivate Distance Pilot DISTRONIC with
Steering Pilot using the on-board computer
(Y page 250).
The Steering Pilot off
Steering Pilot off message appears
in the multifunction display. Steering pilot is
deactivated. When Distance Pilot DISTRONIC is deactivated
or not available, Steering Pilot is deactivated
automatically. Level control (vehicles with the Off-
Road Engineering package)
Important safety notes Level control adapts the vehicle level automati-
cally to the current operating and driving situa-
tion. This results in reduced fuel consumption
and improved handling.
Make changes to the vehicle level while the
vehicle is in motion. This enables the vehicle to adjust to the new level as quickly as possible.
The vehicle level may change visibly if you park
the vehicle and the outside temperature
changes. If the temperature drops, the vehicle
level lowers; with an increase in temperature,
the vehicle level rises.
If you unlock the vehicle or open a door, the
vehicle begins to compensate for load discrep-
ancies while still parked. However, for signifi-
cant level changes, e.g. after the vehicle has
been stationary for a long period, the engine
must be running. For safety reasons, the vehicle
is only lowered when the doors are closed. Low-
ering is interrupted if a door is opened; it con-
tinues once the door has been closed.
Further information about "Driving off-road"
(Y page 176). G
WARNING
People's limbs may become trapped if they
are located underneath the vehicle or
between the vehicle body and the tyres when the vehicle is lowering. There is a danger of
injury.
When lowering the vehicle, make sure no one
is underneath the vehicle or in the immediate vicinity of the wheel arches. G
WARNING
When driving at a raised vehicle level, the driv- ing characteristics may be significantly affec-ted by the vehicle's raised centre of gravity.
The vehicle may be more liable to tip when
cornering, for example. There is a risk of an
accident. 192
Driving systemsDriving and parking

If you press the
%ora button on the
multifunction steering wheel, the message will
disappear.
i Up to offroad level 2, you can hide the mes-
sages using the %ora button on the
multifunction steering wheel.
While the adjustment from offroad level 2 to off-
road level 3 is taking place, you will see a mes-
sage such as the following in the multifunction
display: Vehicle rising Max. speed
Vehicle rising Max. speed
20 km/h 20 km/h.
The Max. Max. speed
speed 20
20km/h
km/h message draws your
attention to the maximum speed permitted for
offroad level 3.
If you drive above 20 km/h at offroad level 3,
you will see the following message shown in red
in the multifunction display: Lowering Max. Lowering Max.
speed 20 km/h
speed 20 km/h.
i You cannot clear these messages.
You also hear a warning tone. The vehicle is low-
ered and offroad level 3 is cancelled.
If you continue to increase your speed, the red
message continues to be shown in the multi-
function display. The newly set level is not dis-
played until the vehicle has been set to a level
suitable for the current speed.
Lowering the vehicle If you drive faster than 20 km/h while the vehi-
cle is being lowered, you will see the following
message shown in white in the multifunction
display: Lowering Max. speed 20 km/h Lowering Max. speed 20 km/h.
The vehicle is lowered to offroad level 2.
You will see a message in the multifunction dis- play, for example: Lowering
Lowering.
Off-road level 2 is cancelled and the vehicle is
lowered to offroad level 1 if you:
R drive at speeds above 80 km/h or
R drive at speeds between 65 km/h and
80 km/h for longer than 20 seconds
Off-road level 1 is cancelled. Depending on the
vehicle's speed and the selected drive program,
the vehicle is automatically lowered to normal
level or low level if you:
R drive at speeds above 115 km/h or
R drive at speeds between 100 km/h and
115 km/h for longer than 20 seconds HOLD function
General notes The HOLD function can assist you if required in
the following situations:
R
when pulling away, especially on steep
slopes.
R when manoeuvring 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 cancelled and the HOLD
function is deactivated when you depress the
accelerator pedal to pull away.
i Do not use the HOLD function when driving
off-road, on steep uphill or downhill gradients or on slippery or loose surfaces. The HOLD
function cannot hold the vehicle on such sur- faces.
Important safety notes G
WARNING
When leaving the vehicle, it can still roll away despite being braked by the HOLD function if:
R there is a malfunction in the system or in
the voltage supply
R the HOLD function is deactivated by the
accelerator pedal being depressed, e.g. by
a vehicle occupant
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
R the battery is disconnected
There is a risk of an accident.
Before leaving the vehicle, always deactivate
the HOLD function and secure the vehicle
from rolling away.
! When DISTRONIC PLUS or the HOLD func-
tion is activated, the vehicle brakes automat- ically 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 away
R in a car wash Driving systems
195Driving and parking Z

Parking Assist PARKTRONIC
Important safety notes Parking Assist PARKTRONIC is an electronic
parking aid with ultrasound. It monitors the area
around your vehicle using six sensors in the
front bumper and six sensors in the rear
bumper. Parking Assist PARKTRONIC visually
and audibly indicates the distance between your
vehicle and an object.
Parking Assist PARKTRONIC is only an aid. It is
not a substitute for your attention to the imme-
diate surroundings. The responsibility for safe
manoeuvring and parking remains with you.
Make sure that there are no persons, animals or objects in range while manoeuvring and parking.
! 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 objects which absorb ultrasonic sources.
Ultrasonic sources, such as an automatic car
wash, a lorry's compressed-air brakes or a
pneumatic drill, could cause PARKTRONIC to
malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
! Fold in the ball coupling if the trailer tow
hitch is not required. PARKTRONIC measures the minimum detection range to an obstacle
from the bumper, not the ball coupling.
Parking Assist PARKTRONIC is deactivated for
the rear area when you establish an electrical
connection between your vehicle and a trailer.
Parking Assist PARKTRONIC is activated auto-
matically when you:
R switch on the ignition
R shift the transmission to position D,Ror N
R release the electric parking brake
Parking Assist PARKTRONIC is deactivated at
speeds above 18 km/h. It is reactivated at lower
speeds. Range of the sensors General notes
Parking Assist PARKTRONIC does not take into
account obstacles located:
R below the detection range, e.g. persons, ani-
mals or objects
R above the detection range, e.g. overhanging
loads, tail sections or loading ramps of goods
vehicles :
Sensors in the front bumper, left-hand side
(example)
The sensors must be free of dirt, ice and slush.
Otherwise, they may not function correctly.
Clean the sensors regularly, taking care not to
scratch or damage them (Y page 341). Driving systems
201Driving and parking Z

Parking Pilot does not assist you parking in
spaces at a right angle to the direction of travel
if:
R two parking spaces are located directly next
to one another
R the parking space is directly next to a low
obstacle such as a low kerb
R you forward-park
Parking Pilot does not assist you parking in
spaces parallel with or at a right angle to the
direction of travel if:
R the parking space is on a kerb
R the system reads the parking space as being
blocked, such as by foliage or grass paving
blocks
R the area is too small for the vehicle to
manoeuvre into
R the parking space is bordered by an obstacle,
e.g. a tree, a post or a trailer :
Detected parking space on the left
; Parking symbol
= Detected parking space on the right
Parking Pilot is activated automatically when
driving forwards. The system is operational at
speeds of up to approximately 35 km/h. While
in operation, the system independently locates
and measures parking spaces on both sides of
the vehicle.
Parking Pilot will detect only parking spaces:
R parallel or at right angles to the direction of
travel
R that are parallel to the direction of travel and
are at least 1.5 m wide
R that are parallel to the direction of travel and
at least 1.0 m longer than your vehicle
R that are at right angles to the direction of
travel and at least 1.0 mwider than your vehi-
cle
i Note that Parking Pilot PARKTRONIC cannot
measure the depth of parking spaces if they
are at right angles to the direction of travel. You will need to judge whether your vehicle
will fit in the parking space.
When driving at speeds below 30 km/h, you will
see parking symbol ;as a status indicator in
the instrument cluster. When a parking space
has been detected, an arrow towards the right or the left also appears. Parking Pilot displays only
parking spaces on the front-passenger side as
standard. Parking spaces on the driver'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 activated until
you confirm the use of Parking Pilot 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 driv- ing past it, and until you are approximately 15 m
away from it.
Parking G
WARNING
If you leave the vehicle when it is only being
braked by Active Parking Assist it could roll
away if:
R there is a malfunction in the system or in
the voltage supply.
R the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with.
R the battery is disconnected.
R the vehicle is accelerated, e.g. by a vehicle
occupant.
There is a risk of an accident.
Before leaving the vehicle, always secure it
against rolling away.
i If Parking Assist PARKTRONIC detects
obstacles, Parking Pilot brakes automatically whilst the vehicle is being parked. You are
responsible for braking in good time. Driving systems
205Driving and parking Z

vehicle with guide lines in the multimedia sys-
tem.
The area behind the vehicle is displayed as a
mirror image, as in the rear-view mirror.
i The text shown in the multimedia system
display depends on the language setting. The following are examples of reversing camera
messages in the multimedia system.
Important safety notes The reversing camera is only an aid. It is not a
substitute for your attention to the immediate
surroundings. The responsibility for safe
manoeuvring and parking remains with you.
Make sure that there are no persons, animals or objects in range while manoeuvring and parking.
Under the following circumstances, the revers-
ing camera will not function, or will function in a limited manner:
R if the boot lid is open
R in heavy rain, snow or fog
R at night or in very dark places
R if the camera is exposed to very bright light
R if the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
R If there is a sudden change in temperature,
e.g. when driving into a heated garage in win- ter
R if the camera lens is dirty or obstructed.
Observe the notes on cleaning
(Y page 341)
R if the rear of your vehicle is damaged. In this
case, have the camera position and setting
checked at a qualified specialist workshop.
The field of vision and other functions of the
reversing camera may be restricted due to addi-
tional accessories on the rear of the vehicle (e.g. licence plate holder, bicycle rack).
For technical reasons, leaving the standard
height can result in inaccuracies in the guide
lines on vehicles with a height-adjustable chas-
sis.
i The reversing camera is protected from rain-
drops and dust by a flap. When the reversing
camera is activated, this flap opens.
The flap closes again when:
R you have finished the manoeuvring process
R you switch off the engine
R you open the luggage compartment See the notes on cleaning (Y
page 341).
For technical reasons, the flap may remain
open briefly after the reversing camera has
been deactivated.
Activating/deactivating the reversing
camera X
To activate: make sure that the key is in
position 2in the ignition lock.
X Make sure that the Activation by R gear Activation by R gear
function is selected in the multimedia system; see the Digital Owner's Manual.
X Engage reverse gear.
The reversing camera flap opens. The multi-
media system shows the area behind the vehi-
cle with guide lines.
The image from the reversing camera is avail-
able throughout the manoeuvring process.
X To switch the function mode for vehicles
with trailer tow hitch: using the controller,
select symbol :for the "Reverse parking"
function or symbol ;for "Coupling up a
trailer".
The symbol of the selected function is high-
lighted.
To deactivate: the reversing camera deacti-
vates if you shift the transmission to Por after
driving forwards a short distance.
Displays in the multimedia system The reversing camera may show a distorted view
of obstacles, show them incorrectly or not at all. Obstacles in the following locations are not
shown by the reversing camera:
R Very close to the rear bumper
R Under the rear bumper
R In the area immediately above the recessed
tailgate handle 208
Driving systemsDriving and parking

!
Objects not at ground level may appear to
be further away than they actually are, e.g.:
R the bumper of a parked vehicle
R the drawbar of a trailer
R the ball coupling of a trailer tow hitch
R the rear section of an HGV
R a slanted post
Use the guidelines only for orientation.
Approach objects no further than the bottom- most guideline. :
Yellow guide line at a distance of approx-
imately 4.0 m from the rear of the vehicle
; White guide line without turning the steering
wheel, vehicle width including the exterior
mirrors (static)
= Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
? Yellow lane marking the course the tyres will
take at the current steering wheel angle
(dynamic) A
Yellow guide line at a distance of approx-
imately 1.0 m from the rear of the vehicle
B Vehicle centre axis (locating aid)
C Bumper
D Red guide line at a distance of approximately
0.30 m from the rear of the vehicle The guide lines are shown when the transmis-
sion is in position R.
The distance specifications apply only to
objects that are at ground level. :
Front warning display
; Additional measurement operational readi-
ness indicator for Parking Assist
PARKTRONIC
= Rear warning display
Vehicles with Parking Assist PARKTRONIC:
when Parking Assist PARKTRONIC is opera-
tional (Y page 201), additional measurement
operational readiness indicator ;appears in
the multimedia system. If the Parking Assist
PARKTRONIC warning displays are active or
light up, warning displays :and =are also
active or light up correspondingly in the multi-
media system. Driving systems
209Driving and parking Z

:
White guide line at current steering wheel
angle
; Parking space marking
X Turn the steering wheel to the centre position
while the vehicle is stationary. :
Red guide line at a distance of approximately
0.30 m from the rear of the vehicle
; White guide line without turning the steering
wheel
= End of parking space
X Reverse carefully until you have reached the
end position.
Red guide line :is then at the end of parking
space =. The vehicle is almost parallel in the
parking space. "Coupling up a trailer" function :
Vehicle centre point on the yellow guide line
at a distance of approximately 1.0 m from
the rear of the vehicle
; Trailer drawbar
This function is available only on vehicles with a
trailer tow hitch.
X Before coupling up a trailer, set the height of
trailer drawbar ;so that it is slightly higher
than the ball coupling.
X Position the vehicle centrally in front of trailer
drawbar ;. :
Red guide line at a distance of approximately
0.30 m from the ball coupling
; Trailer drawbar locating aid
= Trailer drawbar
? Symbol for the "Coupling up a trailer" func-
tion
A Ball coupling
i For technical reasons, the ball coupling of
the trailer tow hitch in the multimedia system
display is either only partially visible or not at all.
X Select symbol ?using the controller.
The "Coupling up a trailer" function is selec-
ted. The distance specifications now apply Driving systems
211Driving and parking Z