parking brake MERCEDES-BENZ GLE SUV 2017 W166 Service Manual

Ryou activateth eOffroad Plus progra m(vehi-
cle swit hth eOff-Road Engineerin gpackage)
Ryou shift th etransmission to position Nwhile
drivin g
If cruise control is deactivated, you will hear a
warnin gtone .You will see th eCruise Con ‐
trolOffmessage in th emultifunction display
for approximately fiv eseconds.
iWhe nyou switch off th eengine, th elast
speed store dis cleared .
Distance Pilot DISTRONIC
Gene ral notes
Distanc ePilo tDISTRONI Cregulates th espeed
and automatically help syou maintai nth edis-
tance to th evehicl edetecte din front. Vehicles
are detecte dwit hth eaid of th erada rsensor
system. Distanc ePilo tDISTRONI Cbrakes auto-
matically so that th eset speed is no texceeded .
You mus tselect alower gear in goo dtime on
lon gand steep downhill gradients ,especially if
th evehicl eis laden or towin g atrailer .By doin g
so, you will mak euse of th ebrakin geffec tof th e
engine. This relieves th eload on th ebrak esys-
te m and prevents th ebrakes from overheating
and wearin gto oquickly.
If Distanc ePilo tDISTRONI Cdetects that there is
a ris kof acollision ,you will be warned visually
and acoustically. Without your intervention ,Dis-
tance Pilo tDISTRONI Ccanno tpreven t acolli-
sion .An intermittent warnin gtone will then
soun dand th edistanc ewarnin glamp will ligh t
up in th einstrumen tcluster. Brake immediately
in order to increase th edistanc eto th evehicl ein
fron tor tak eevasive action provided it is saf eto
do so.
Fo rDistanc ePilo tDISTRONI Cto assist you
when driving, th erada rsensor system mus tbe
operational.
Dis
tanc ePilo tDISTRONI Coperate sin th erange
between 0mph (0 km/h) and 12 0mph
(20 0km/h).
Do no tuse Distanc ePilo tDISTRONI Cwhile driv-
in g on roads wit hsteep gradients .
Since Distanc ePilo tDISTRONI Ctransmit srada r
waves, it can resemble th erada rdetectors of
th eresponsibl eauthorities. You can refer to th e
relevan tchapter in th eOperator' sManual if
question sare asked about this.
iUS Aonly:
This device has been approve dby th eFCC as
a "Vehicular Radar System". The rada rsensor
is intended for use in an automotive rada r
system only. Removing, tamperin gwith, or
altering th edevice will voi dany warranties,
and is no tpermitte dby th eFCC. Do no ttam -
per with, alter, or use in any non-approve d
way.
An yunauthorize dmodification to this device
could voi dth euser’s authorit yto operate th e
equipment.
iCanada only: This device complies wit h
RSS-210 of Industry Canada. Operation is
subjec tto th efollowin gtw oconditions:
1. This device may no tcaus eharmful inter-
ference ,and
2. This device mus taccept any interferenc e
received, includin ginterferenc ethat may
caus eundesired operation of th edevice .
Removal, tampering, or altering of th
ed
evice
will voi dany warranties, and is no tpermitted.
Do no ttamper with, alter, or use in any non-
approve dway.
An yunauthorize dmodification to this device
could voi dth euser's authorit yto operate th e
equipment.
Imp ortant safety notes
GWARNIN G
Distanc ePilo tDISTRONI Cdoes no treac tto :
Rpeople or animals
Rstationary objects on th eroad, e.g. stoppe d
or parked vehicles
Roncomin gvehicles and crossin gtraffic
As aresult ,Distanc ePilo tDISTRONI Cmay
neither giv ewarnings no rinterven ein suc h
situations. There is aris kof an accident.
Always pay careful attention to th etraffic sit -
uation and be read yto brake.
GWARNIN G
Distanc ePilo tDISTRONI Ccanno talways
clearly identify other roa duser sand complex
traffic situations.
168Driving systems
Driving and parking

In such cases, Distance Pilot DISTRONIC may:
Rgive an unnecessary warning and then
brake the vehicle
Rneither give a warning nor intervene
Raccelerate 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.
GWARNING
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:
Rwhen towing the vehicle
Rin 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:
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 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:
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 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:
Rbe too high if you are driving in a filter lane or an exit lane
Rbe so high when driving in the right-hand lanethat you overtake vehicles in the left-hand
lane
Rbe 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
:Activates or increases speed
;Activates or reduces speed
=Deactivates Distance Pilot DISTRONIC
?Activates at the current speed/last stored
speed
ASets a specified minimum distance
Driving systems169
Driving and parking
Z

Activating Distance Pilot DISTRONIC
Activation conditions
To activat eDistanc ePilo tDISTRONIC, th efol -
lowin gcondition smus tbe fulfilled :
Rtheengin emus tbe started. It may tak eup to
two minute sof drivin gbefore Distanc ePilo t
DISTRONI Cis read yfor use.
Rth eelectric parking brak emus tbe released.
RES P®mus tbe active ,but no tintervening .
Rthetransmission mus tbe in position D.
Rthedriver's door mus tbe closed when you
shif tfrom Pto Dor your seat belt mus tbe
fastened.
Rth efront-passenger door and rear door smus t
be closed.
Rth eOffroad Plus drive program mus tbe deac -
tivated (vehicles wit hth eOff-Road Engineer -
ing package).
RDS Rmus tbe deactivated.
Rth evehicl emus tno tskid.
Acti vating
XBriefly pull th ecruise control lever toward s
you =,up: or down ?.
Distanc ePilo tDISTRONI Cis activated.
XRemove your foo tfrom th eaccelerato rpedal .
Your vehicl eadapt sits spee dto that of th e
vehicl ein front, but only up to th edesired
store dspeed.
iIf you do no tfully release th eaccelerato r
pedal ,th eDistance Pilot Passiv emes-
sage appear sin th emultifunction display. The
set distanc eto aslower-moving vehicl ein
fron twill then no tbe maintained. You will be
drivin gat th espee dyou determine by th e
position of th eaccelerato rpedal .
You can also activat eDistanc ePilo tDISTRONI C
when stationary. The lowes tspee dthat can be
set is 20 mph (30 km/h).
XBriefly pull th ecruise control lever toward s
you =,up: or down ?.
Distanc ePilo tDISTRONI Cis activated.
Acti vates at th ecurren tspeed/las t
store dspeed
GWARNIN G
If you call up th estore dspee dand it differ s
from th ecurren tspeed, th evehicl eacceler -
atesor decelerates. If you do no tknow th e
store dspeed, th evehicl ecould accelerate or
brak eunexpectedly. There is aris kof an acci-
dent.
Pay attention to th eroad and traffic condi-
tion sbefore calling up th estore dspeed. If you
do no tknow th estore dspeed, store th e
desired spee dagain .
XBriefly pull th ecruise control lever toward s
you =.
XRemove your foo tfrom th eaccelerato rpedal .
The first time Distanc ePilo tDISTRONI Cis
activated, it store sth ecurren tspee dor reg -
ulates th espee dof th evehicl eto th estore d
speed.
Driving with Distance Pilot DISTRONIC
Pulling awa yand drivin g
XIf you want to pull awa ywit hDistance
Pilot DISTRONIC: remove your footfrom th e
brak epedal .
XBriefly pull th ecruise control lever toward s
you ?.
or
XAccelerate briefly.
Your vehicl epulls away and adapt sits spee d
to that of th evehicl ein front. If no vehicl eis
detecte din front, your vehicl eaccelerate sto
th eset speed.
The vehicl ecan also pull away when it is facing
an unidentifie dobstacle or is drivin gon adiffer -
en tlin efrom another vehicle. The vehicl ethen
brakes automatically.
If there is no vehicl ein front, Distanc ePilo t
DISTRONI Coperate sin th esam eway as cruise
control .
If Distanc ePilo tDISTRONI Cdetects aslower-
moving vehicl ein front, it brakes your vehicle. In
this way, th edistanc eyou hav eselected is main -
tained.
If Distanc ePilo tDISTRONI Cdetects afaster-
moving vehicl ein front, it increases th edrivin g
speed. However, th evehicl eis only accelerate d
up to th espee dyou hav estored.
170Driving systems
Driving and parking

Selecting the drive program
Distance Pilot DISTRONIC supports a sporty
driving style if you have selected theSportor
Sport Plus drive program (
Ypage 143). Accel-
eration behind the vehicle in front or to the set
speed is then noticeably more dynamic. If you
have selected the Comfortdrive 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:
Ryou are driving faster than 45 mph (70 km/h)
Ryou switch on the appropriate turn signal
RDistance 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.
iWhen you change lanes, Distance Pilot
DISTRONIC monitors the right lane (in left-
side traffic) or the left lane (in right-side traf-
fic).
Stopping
GWARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if:
Rthere is a malfunction in the system or in
the voltage supply.
RDISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by a vehi-
cle occupant or from outside the vehicle.
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.
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:
Rthe driver's door is open and the driver's seat
belt is unfastened.
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, with Distance Pilot DISTRONIC
activated and the vehicle stationary:
Ra system malfunction occurs.
Rthe 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.
XPress the cruise control lever up:for a
higher speed or down Afor a lower speed
XTo adjust the set speed in1 mphincre-
ments (1 km/hincrements): 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 in5 mphincre-
ments (10 km/hincrements): 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.
Driving systems171
Driving and parking
Z

iIf 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 (
Ypage 173).
XTo increase: turn control;in direction =.
Distance Pilot DISTRONIC then maintains a
greater distance between your vehicle and
the vehicle in front.
XTo decrease: turn control;in direction :.
Distance Pilot DISTRONIC then maintains a
shorter distance between your vehicle and
the vehicle in front.
iMake sure that you maintain a sufficiently
safe distance from the vehicle in front. Adjust
the distance to the vehicle in front if neces-
sary.
Deactivating Distance Pilot DISTRONIC
There are several ways to deactivate Distance
Pilot DISTRONIC:
XBriefly press the cruise control lever for-
wards :.
or
XBrake, unless the vehicle is stationary
When you deactivate Distance Pilot DISTRONIC,
the Distance Pilot off
message appears in
the multifunction display for approximately five
seconds.
iThe last speed stored remains stored until
you switch off the engine.
iDistance Pilot DISTRONIC is not deactivated
if you depress the accelerator pedal. If you
accelerate to overtake, Distance Pilot
DISTRONIC adjusts the vehicle's speed to the
last speed stored after you have finished over-
taking.
Distance Pilot DISTRONIC is automatically deac-
tivated if:
Ryou engage the electric parking brake or if the
vehicle is automatically secured with the elec- tric parking brake
RESP®intervenes or you deactivate ESP®
Rthe transmission is in the P,Ror Nposition
Ryou pull the cruise control lever towards you
in order to pull away and the front-passenger
door or one of the rear doors is open
Ryou activate Parking Pilot
Rthe vehicle has skidded
A warning tone sounds. The Distance Pilot
Offmessage will appear in the multifunction
display for approximately five seconds.
172Driving systems
Driving and parking

Tips for driving with Distance Pilot
DISTRONIC
General notes
Pay particular attention in the following traffic
situations:
RCornering, entering and exiting a bend: the
ability of Distance Pilot DISTRONIC to detect
vehicles during cornering is limited. Your vehi-
cle may brake unexpectedly or late.
RDriving on a different line: Distance Pilot
DISTRONIC may not detect vehicles which are
not driving in the middle of their lane. The dis-
tance to the vehicle in front will be too short.
ROther vehicles changing lanes: Distance Pilot
DISTRONIC has not detected the vehicle cut-
ting in yet. The distance to this vehicle will be
too short.
RNarrow vehicles: Distance Pilot DISTRONIC
has not yet detected the vehicle in front on
the edge of the road because of its narrow
width. The distance to the vehicle in front willbe too short.
RObstacles and stationary vehicles: Distance
Pilot DISTRONIC does not brake for obstacles
or stationary vehicles. If, for example, the
detected vehicle turns a corner and an obsta-cle or stationary vehicle is then revealed, Dis-
tance Pilot DISTRONIC will not brake for
them.
RCrossing traffic: Distance Pilot DISTRONIC
may mistakenly detect vehicles that are
crossing your lane. Activating Distance Pil
ot
DISTRONIC at, for example, a traffic light with
crossing traffic, could cause your vehicle to
pull away at the wrong time.
In such situations, brake if necessary. Distance
Pilot DISTRONIC will then be deactivated.
Distance Pilot DISTRONIC with Steering
Pilot
General notes
Distance Pilot DISTRONIC with Steering Pilot
aids you in keeping the vehicle in the center of
the driving lane by means of moderate steering
interventions in a speed range from 0 - 125 mph (0 - 200 km/h).
It monitors the area in front of your vehicle by
means of camera system :at the top of the
windshield.
In a speed range from 0 - 37 mph (0 - 60 km/h),
the advanced automatic pulling away function
focuses on the vehicle in front, taking into
account lane markings, e.g. when following vehi-
cles in a traffic jam.
At speeds of more than 37 mph (60 km/h),
Steering Pilot focuses on clear lane markings
(left and right), only focusing on the vehicle in
front if clear 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 your 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 which is driving towards the edge of
the road, your vehicle could come into contact
174Driving system s
Driving an d parking

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.
iDo 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
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.
!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:
Rwhen towing the vehicle
Rin the car wash
Deactivating the HOLD function (
Ypage 179).
Activation conditions
You can activate the HOLD function if:
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
RDistance Pilot DISTRONIC is deactivated
Activating the HOLD function
XMake sure that the activation conditions are
met.
XDepress the brake pedal.
XQuickly depress the brake pedal further
until :appears in the multifunction display.
The HOLD function is activated. You can
release the brake pedal.
iIf depressing the brake pedal the first time
does not activate the HOLD function, wait
briefly and then try again.
Deactivating the HOLD function
The HOLD function is deactivated automatically
if:
Ryou accelerate and the transmission is in
position Dor R.
Ryou shift the transmission to position P.
Ryou depress the brake pedal again with a cer-
tain amount of pressure until :disappears
from the multifunction display.
Ryou secure the vehicle using the electric park- ing brake.
Ryou activate Distance Pilot DISTRONIC.
iAfter a time, the electric parking brake
secures the vehicle and relieves the service
brake.
Driving systems179
Driving and parking
Z

When the HOLD function is activated, the trans-
mission is shifted automatically to positionPif:
Rthe driver's door is open and the driver's seat
belt is unfastened.
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 the HOLD function is activated
when the vehicle is stationary and:
Ra system malfunction occurs.
Rthe 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.
AIRMATIC package
General notes
AIRMATIC is an air suspension system with var-
iable damping for improved driving comfort.
Level control ensures the best possible suspen-
sion and constant ground clearance, even with a
laden vehicle. When you drive fast, the vehicle is
lowered automatically to improve driving safety
and to reduce fuel consumption. There is also
the option to manually adjust the vehicle level.
All vehicles (except Mercedes-AMG vehi-
cles): AIRMATIC consists of:
Rlevel settings
Rlevel control and
RADS (Adaptive Damping System)
Mercedes-AMG vehicles: AIRMATIC consists
of:
Rlevel settings
Rlevel control and
RADS PLUS (Adaptive Damping System)
All vehicles (except Mercedes-AMG vehi-
cles): your vehicle may also be equipped with
the ACTIVE CURVE SYSTEM (
Ypage 182).
Mercedes-AMG vehicles: your vehicle is equip-
ped with the ACTIVE CURVE SYSTEM.
(
Ypage 182).
Observe the notes on driving with a trailer
(
Ypage 216).
The vehicle level can be set using the DYNAMIC
SELECT controller (
Ypage 139) or the level but- ton (
Ypage 182). The setting always corre-
sponds to the last selected function.
Important safety notes
GWARNING
When the vehicle is being lowered, people
could become trapped if their limbs are
between the vehicle body and the wheels or
underneath the vehicle. There is a risk of
injury.
Make sure no one is underneath the vehicle or
in the immediate vicinity of the wheel arches
when the vehicle is being lowered.
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, such as after the vehicle has
been stationary for a long period, the engine
must be on. For safety reasons, the vehicle is
only lowered when the doors are closed. Low-
ering is interrupted if a door is opened, and it
continues once the door has been closed.
ADS and ADS PLUS (Adaptive Damping
System)
General notes
The Adaptive Damping System automatically
controls the calibration of the dampers. The
damping characteristics adapt to the current
operating and driving situation.
The damping is tuned individually to each wheel
and depends on:
Ryour driving style, e.g. sporty
Rthe road surface conditions
Rthe drive program selected
Rthe vehicle level setting
180Driving systems
Driving and parking

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.
!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:
Rswitch on the ignition
Rshift the transmission to position D,R or N
Rrelease the electric parking brake
Parking Assist PARKTRONIC is deactivated at
speeds above 11 mph (18 km/h). It is reactiva-
ted at lower speeds.
Range of the sensors
General notes
Parking Assist PARKTRONIC does not take into
account obstacles located:
Rbelow the detection range, e.g. people, ani-
mals or objects.
Rabove the detection range, e.g. overhanging
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 correctly. Clean
the sensors regularly, taking care not to scratch
or damage them (
Ypage 323).
Range
Front sensors
CenterApprox. 40 in (approx.
100 cm)
CornersApprox. 24 in (approx.
60 cm)
Rear sensors
CenterApprox. 48 in (approx.
120 cm)
CornersApprox. 32 in (approx.
80 cm)
Minimum distance
CenterApprox. 8 in (approx. 20 cm)
CornersApprox. 6 in (approx. 15 cm)
If there is an obstacle within this range, the rel-
evant warning displays light up and a warning
Driving system
s185
Driving an d parking
Z

Problems with Parking Assist PARKTRONIC
ProblemPossible causes/consequences andMSolutions
Only the red segments in
the Parking Assist
PARKTRONIC warning
displays are lit. You also
hear a warning tone for
approximately two sec-
onds.
Parking Assist
PARKTRONIC is deacti-
vated after approx-
imately five seconds,
and the indicator lamp in
the Parking Assist
PARKTRONIC button
lights up.Parking Assist PARKTRONIC has malfunctioned and has been deacti-
vated.
XIf problems persist, have Parking Assist PARKTRONIC checked at a
qualified specialist workshop.
Only the red segments in
the Parking Assist
PARKTRONIC warning
displays are lit. Parking
Assist PARKTRONIC is
deactivated after
approximately five sec-
onds.The Parking Assist PARKTRONIC sensors are dirty or there is inter-
ference.
XClean the Parking Assist PARKTRONIC sensors (Ypage 323).
XSwitch the ignition back on.
The problem may be caused by an external source of radio or ultra-
sound waves.
XCheck to see if Parking Assist PARKTRONIC works at a different
location.
Parking Pilot
General notes
Parking Pilot is an electronic parking aid with
ultrasound. It measures the road on both sides
of the vehicle. A parking symbol indicates a suit-
able parking space. Active steering intervention
and brake application can assist you during
parking. Parking Assist PARKTRONIC is also
available (
Ypage 184).
Important safety notes
Parking Pilot is only an aid. It is not a replace-
ment for your attention to your immediate sur-
roundings. You are always responsible for safe
maneuvering, parking and exiting a parking
space. Make sure that no persons, animals or
objects are in the maneuvering range.
When Parking Assist PARKTRONIC is deactiva-
ted, Parking Pilot is also unavailable.
GWARNING
While parking or pulling out of a parking
space, the vehicle swings out and can drive
onto areas of the oncoming lane. This could
result in a collision with another road user.
There is a risk of an accident.
Pay attention to other road users. Stop the
vehicle if necessary or cancel the Active Park- ing Assist parking procedure.
!If unavoidable, you should drive over obsta-
cles such as curbs slowly and not at a sharp
angle. Otherwise, you may damage the
wheels or tires.
Parking Pilot may show parking spaces which
are not suitable for parking, e.g.:
Rwhere parking or stopping is prohibited
Rin front of driveways or entrances and exits
Ron unsuitable surfaces
Driving systems187
Driving and parking
Z