lane assist MERCEDES-BENZ S CLASS 2017 Owners Manual

1, 2, 3 ...4ETS (Electronic Traction System)
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 183
12 V socket
see Sockets
115 V socket ...................................... 297
360° camera
Cleaning ........................................ .3 23
Function/notes ............................ .1 94
AABS (Anti-lock Braking System)
Display message ............................ 228
Function/notes ................................ 66
Warning lamp ................................. 261
Accident
Automatic measures after an acci-
dent ................................................. 58
Activating media mode
General notes ................................ 278
Activating/deactivating cooling
with air dehumidification ................. 135
Activating/deactivating Night
View Assist Plus
With spotlight function ................... 202
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 223
Display message ............................ 247
Function/information .................... 204
Active Body Control (ABC)
Display message ............................ 246
Function/notes ............................. 180
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 223
Display message ............................ 246
Function/information .................... 206
Active multicontour seat .................. 112
Active Parking Assist
Detecting parking spaces .............. 187
Display message ............................ 247
Exiting a parking space .................. 189 Function/notes ............................. 186
Important safety notes .................. 186
Parking .......................................... 188
ADAPTIVE BRAKE ................................. 73
Adaptive Brake Assist
Function/notes ................................ 70
Adaptive Damping System (ADS) ..... 182
Adaptive Highbeam Assist Plus
Display message ............................ 241
Function/notes ............................. 126
Switching on/off ........................... 127
Additional speedometer ................... 225
Additives (engine oil) ........................ 374
Address book
see also Digital Operator's Man-
ual .................................................. 269
Adjusting the volume
Multimedia system ........................ 270
Air bags
Belt bags .......................................... 46
Cushion air bags .............................. 50
Deployment ..................................... 55
Display message ............................ 239
Front air b ag (driver, front
p assenger) ....................................... 49
Important safety notes .................... 48
Introduction ..................................... 48
Knee bag .......................................... 49
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 43
Side impact air bag .......................... 50
Window curtain air bag .................... 50
Air vents
Glove box ....................................... 143
Important safety notes .................. 143
Rear ............................................... 143
Setting ........................................... 143
Setting the center air vents ........... 143
Setting the side air vents ............... 143
Air-conditioning system
see Climate control
AIRMATIC
Display message ............................ 245
Function/notes ............................. 182
Alarm
ATA (Anti-Theft Alarm system) ......... 764
Index

Tires ............................................... 252
Vehicle .......................................... .2 54
Distance recorder
see Odometer
see Trip odometer
Distance warning (warning lamp) .... 266
Distance warning function
Function/notes ................................ 69
DISTRONIC PLUS
Activating ....................................... 172
Activation conditions ..................... 172
Cruise control lever ....................... 172
Deactivating ................................... 176
Display message ............................ 249
Displays in the instrument cluster .. 175
Driving tips ................................... .1 76
Driving with DISTRONIC PLUS ....... 173
Function/notes ............................ .1 71
Important safety notes .................. 171
Setting a speed .............................. 174
Setting the specified minimum
distance ......................................... 175
Stopping ........................................ 174
with Steering Assist and Stop&Go
Pilot ............................................... 177
Doors
Automatic locking (switch) .............. .8 4
Central locking/unlocking
(SmartKey) ...................................... .7 7
Control panel .................................. .4 0
Display message ............................ 256
Emergency locking ........................... 84
Emergency unlocking ....................... 84
Important safety notes .................... 83
Opening (from inside) ...................... 83
Power closing .................................. 84
Drinking and driving ......................... 165
Drive program
Automatic ...................................... 156
Manual ........................................... 157
Manual (Mercedes-AMG vehi-
cles) ............................................... 158
SETUP (on-board computer) .......... 226
Driver's door
see Doors
Driving abroad
Mercedes-Benz Service ................. 319
Driving Ass istance package .............
204 Driving on flooded roads .................. 168
Driving safety systems
ABS (Anti-lock Braking System) ....... 66
ADAPTIVE BRAKE ............................. 73
Adaptive Brake Assist ...................... 70
BAS (Brake Assist System) .............. 66
BAS PLUS with Cross-Traffic
Assist ............................................... 67
COLLISION PREVENTION ASSIST
PLUS ................................................ 68
Distance warning function ............... 69
EBD (electronic brake force distri-
bution) ............................................. 73
ESP ®
(Electronic Stability Pro-
gram) ............................................... 71
Important safety information ........... 66
Overview .......................................... 65
PRE-SAFE ®
Brake ............................. 73
STEER CONTROL ............................. 75
Driving systems
360°camera .................................. 194
Active Blind Spot Assist ................. 204
Active Body Control ABC ............... 180
Active Lane Keeping Assist ............ 206
Active Parking Assist ..................... 186
AIRMATIC ...................................... 182
ATTENTION ASSIST ........................ 198
Cruise control ................................ 169
Display message ............................ 245
DISTRONIC PLUS ........................... 171
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot ............... 177
Driving Assistance package ........... 204
HOLD function ............................... 178
Night View Assist Plus ................... 200
PARKTRONIC ................................. 184
Rear view camera .......................... 190
Traffic Sign Assist .......................... 199
Driving tips
AMG ceramic brakes ..................... 168
Automatic transmission ................. 155
Brakes ........................................... 166
Break-in period .............................. 144
DISTRONIC PLUS ........................... 176
Downhill gradient ........................... 166
Drinking and driving ....................... 165
Driving in winter ............................. 168 Index 9

K Key positions
Sm artKey ...................................... .1 45
Start/Stop button .......................... 145
KEYLESS-GO
Activating ......................................... 78
Convenience closing feature ............ 92
Deactivation ..................................... 78
Locking ............................................ 78
Start function ................................... 79
Unlocking ......................................... 78
Kickdown
Driving tips ................................... .1 55
Knee bag .............................................. 49
L Lamps
see Warning and indicator lamps
Lane Keeping Assist
see Active Lane Keeping Assist
LATCH-type (ISOFIX) child seat
anchors ................................................ 61
License plate lamp (display mes-
sage) ................................................... 241
Light sensor (display message) ....... 241
Lights
Adaptive Highbeam Assist PLUS .... 126
Automatic headlamp mode ............ 124
Cornering light function ................. 126
Fogged up headlamps .................... 127
General notes ................................ 124
Hazard warning lamps ................... 126
High beam flasher .......................... 125
High-beam headlamps ................... 125
Light switch ................................... 124
Low-beam headlamps .................... 125
Parking lamps ................................ 125
Setting exterior lighting ................. 124
Standing lamps .............................. 125
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 225
Switching the spotlight on/off ....... 225
Turn signals ................................... 125
see Interior lighting
Loading guidelines ............................ 281 Locking
see Central locking
Locking (doors)
Automatic ........................................ 84
Emergency locking ........................... 84
From inside (central locking but-
ton) ................................................. .8 3
Locking centrally
see Central locking
Low-beam headlamps
Display message ............................ 241
Switching on/off .......................... .1 25
Lumbar support
Adjusting the 4-way lumbar sup-
port ................................................ 112
Luxury head restraints ..................... 110
M M+S tires ............................................ 345
Magic Body Control ........................... 180
MAGIC SKY CONTROL ......................... 97
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) ................................................. .3 21
MBC
see Magic Body Control
mbrace
Call priority ................................... .3 04
Display message ............................ 233
Downloading destinations
(COMAND) ..................................... 304
Downloading routes ....................... 307
Emergency call .............................. 301
General notes ................................ 300
Geo fencing ................................... 307
Info call button .............................. 303
Locating a stolen vehicle .............. .3 06
Remote fault diagnosis .................. 306
Remote vehicle locking .................. 305
Roadside Assistance button .......... 302
Search & Send ............................... 304
Self-test ......................................... 301
Speed alert .................................... 307
System .......................................... 301
Triggering the vehicle alarm ........... 307
Vehicle remote unlocking .............. 305 Index 13

Mechanical key
Function/notes ................................ 79
General notes .................................. 79
Inserting .......................................... 79
Locking vehicle ................................ 84
Removing ........................................ .7 9
Unlocking the driver's door .............. 84
Media Interface
USB port in the armrest of the
center console .............................. .2 83
see Digital Operator's Manual
Memory card (audio) ......................... 218
Memory function
In the rear compartment ................ 121
Seats, steering wheel, exterior
mirrors .......................................... .1 20
Storing settings (rear compart-
ment) ............................................. 121
Mercedes-Benz Intelligent Drive
360°camera .................................. 194
ABS (Anti-lock Brake System) .......... 66
Active Blind Spot Assist ................. 204
Active Lane Keeping Assist ............ 206
Active Parking Assist ..................... 186
ATTENTION ASSIST ........................ 198
BAS (Brake Assist) ........................... 66
BAS PLUS (Brake Assist PLUS)
with Cross-Traffic Assist .................. 67
Crosswind Assist (vehicles with
MAGIC BODY CONTROL) .............. .1 80
Crosswind Assist (vehicles with-
out MAGIC BODY CONTROL) ..... 72, 73
DISTRONIC PLUS ........................... 171
DISTRONIC PLUS with Steering
Assist and Stop&Go Pilot .............. .1 77
ESP ®
(Electronic Stability Pro-
gram) ............................................... 71
General notes ................................ 169
MAGIC BODY CONTROL ................ 180
Night View Assist Plus ................... 200
PARKTRONIC ................................. 184
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 57
PRE-SAFE ®
Brake ............................ .7 3
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS) .............. 58
Rear view camera .......................... 190 ROAD SURFACE SCAN .................. 181
Traffic Sign A ssist .......................... 199
Message memory (on-board com-
puter) .................................................. 227
Messages
see Display messages
see Warning and indicator lamps
Mirror turn signal
Cleaning ......................................... 323
Mirrors
see Exterior mirrors
see Rear-view mirror
see Vanity mirror (in the sun visor)
Mobile phone
Connecting (Bluetooth ®
inter-
face) ............................................. .2 77
Connecting another mobile
phone ............................................ 278
Frequencies ................................... 369
Installation ..................................... 369
Menu (on-board computer) ............ 219
Transmission output (maximum) .... 369
Modifying the programming
(SmartKey) .......................................... .7 9
MOExtended tires .............................. 328
Mounting wheels
Lowering the vehicle ...................... 367
Mounting a new wheel ................... 366
Preparing the vehicle .................... .3 63
Raising the vehicle ......................... 364
Removing a wheel .......................... 366
Securing the vehicle against roll-
ing away ........................................ 363
MP3
Operation ....................................... 218
see also Digital Operator's Man-
ual ................................................. .2 69
Multifunction display
Function/notes ............................ .2 12
Multifunction steering wheel
Operating the on-board computer .. 211
Overview .......................................... 36
Multimedia system
Switching on and off ..................... .2 70
Music files
see also Digital Operator's Man-
ual ................................................. .2 6914
Index

R
ESP ®
( E lectronic S tability P rogram)
( Y
page 71)R
EBD ( E lectronic B rake force D istribution)
( Y
page 73)R
ADAPTIVE BRAKE ( Y
page 73)R
PRE-SAFE ®
Brake ( Y
page 73)R
STEER CONTROL ( Y
page 75)
Important safety notes If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override
the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in
good time, and for staying in lane. Always adapt
your driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Pay particular attention to the informa-
tion regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and tires"
section ( Y
page 343).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow chains.
Only in this way will the driving safety systems
described in this section work as effectively as
possible.
ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way that
the wheels do not lock when you brake. This
allows you to continue steering the vehicle when
braking.
The % ABS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out when the engine is running.
ABS works from a speed of about 5 mph
(8 km/h), regardless of road-surface conditions.
ABS works on slippery surfaces, even when you
only brake gently. Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 66).
G WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Y
page 261) and dis-
play messages which may be shown in the
instrument cluster ( Y
page 228).
Braking X
If ABS intervenes: continue to depress the
brake pedal vigorously until the braking sit-
uation is over. X
To make a full brake application: depress
the brake pedal with full force.
If ABS intervenes when braking, you will feel a
pulsing in the brake pedal.
The pulsating brake pedal can be an indication
of hazardous road conditions, and functions as a
reminder to take extra care while driving.
BAS (Brake Assist System)
General information BAS operates in emergency braking situations.
If you depress the brake pedal quickly, BAS
automatically boosts the braking force, thus
shortening the stopping distance.
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y
page 66).66
Driving safet y system s
Sa fety

Important safety notes Cros swin d Assist does not work if ESP ®
is
swit ched off or deactivated because of a mal-
function.
Crosswind Assist General information Veh icle s wit h MAGIC BODY CONTROL: informa-
tion on st abiliz ing the veh icle in the event of
cross win d ( Y
page 180).
St rong cross win d gusts can impair the abilit y of
your veh icle to driv e straight ahead. The cross-
win d driv ing assistance function integrated in
ESP ®
noticeably reduces these impairments.
ESP ®
intervenes automatical ly according to the
dire ction and intensity of the cross winds affect-
ing your veh icle .
ESP ®
intervenes wit h st abiliz ing braking to
assist you in ke epin g the veh icle in the lane.
Cros swin d Assist is active at veh icle spee ds
above 50 mph (80 km/h) when driv ing straight
ahead or cornering gently.
Important safety notes Cros swin d Assist does not work if ESP ®
is
swit ched off or deactivated because of a mal-
function.
EBD (electronic brake force distribu-
tion)
General information EBD monitors and controls the brake pressure
on the rear wheels to impr ove driv ing st abilit y
while braking.
Important safety notes
i Observe the "Im portant safety notes" sec-
tion ( Y
page 66).
G WAR NING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the
risk of sk iddin g and an acc iden t.
You should therefore adapt your driv ing style
to the diff erent han dlin g characteristics. Have the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps ( Y
page 261) as well as display
messages ( Y
page 230).
ADAPTIVE BRAKE ADAPTIVE BRAKE enhances braking safety and
offers increased braking comfort. In addition to
the braking function, ADAPTIVE BRAKE also has
the HOLD function ( Y
page 178) and hill start
assist ( Y
page 148).
PRE-SAFE ®
Brake
General information PRE-SAFE ®
Brake can help you to minimize the
risk of a collision with a vehicle ahead or a
pedestrian, and reduce the effects of such a
collision. If PRE-SAFE ®
Brake has detected a risk
of collision, you will be warned visually and
acoustically as well as by automatic braking.
i Pay attention to the important safety notes
in the "Driving safety systems" section
( Y
page 66).
PRE ‑ SA FE ®
Brake is only availab le in vehicles
with the Dr ivin g Assistance Plus package.
For PRE-SAFE ®
Brake to assist you when driving,
the radar sensor system and the camera system
must be swit ched on and be operational.
With the help of the radar sensor system and the
camera system, PRE-SAFE ®
Brake can detect
obstacles that are in front of your vehicle for an
extended period of time.
In addition, pedestrians in the path of your vehi-
cle can be detected.
PRE-SAFE ®
Brake detects pedestrians using
typical characteristics such as the body con-
tours and posture of a person standing upright.
i Observe the restrictions desc ribe d in the
"Important safety notes" section
( Y
page 74).Driving safety systems 73
Safety Z

G DANGER
If th e exhaust pipe is blocke d or adequate
ventilation is no t possible, poisonous gase s
suc h as carbon monoxide (CO) may ente r th e
vehicle. This is th e case, e.g. if th e vehicl e
become s trapped in snow. There is a ris k of
fatal injury.
If you leav e th e engin e or th e auxiliary heating
running, mak e sur e th e exhaust pipe and area
around th e vehicl e are clear of snow. To
ensur e an adequate supply of fresh air, open a
window on th e side of th e vehicl e that is no t
facing int o th e wind.
Hav e your vehicl e winter-proofe d at a qualified
specialist workshop at th e onset of winter.
Drive particularly carefully on slipper y roa d sur -
faces. Avoid sudden acceleration , steering and
braking maneuvers . Do no t use th e cruise con-
trol or DISTRONI C PLUS.
If th e vehicl e threaten s to skid or canno t be
stoppe d when moving at low speed:X
Shift th e transmission to position N .
The outside temperature indicator is no t
designed to serve as an ice-warning device and
is therefor e unsuitable for that purpose .
Changes in th e outside temperature are dis-
played after a short delay.
Indicate d temperatures jus t abov e th e freezing
poin t do no t guarantee that th e roa d surfac e is
free of ice . The roa d may s till be icy, especially in
w ooded area s or on bridges .
You should pay special attention to roa d condi-
tion s when temperatures are around freezing
point.
Fo r mor e information on drivin g wit h snow
chains, see ( Y
page 345).
Fo r mor e information on drivin g wit h summer
tires , see ( Y
page 345).
Observ e th e note s in th e "Winte r operation " sec -
tion ( Y
page 345).
Driving systems
Mercedes-Benz Intelligent Drive
Mercedes-Ben z Intelligent Drive stand s for inno-
vative driver assistanc e and safet y systems
whic h enhance comfort and support th e driver in critical situations. Wit h these intelligen t co-ordi -
nated systems Mercedes-Ben z has set a mile -
ston e on th e pat h toward s autonomous driving.
Mercedes-Ben z Intelligent Drive embraces all
elements of active and passive safet y in on e well
though t out system – for th e safet y of th e vehi-
cle occupant s and that of other roa d users.
Further information on drivin g safet y systems
( Y
page 65).
Cruise cont rol
Gene ra l notesCruis e control maintains a constan t roa d speed
for you. It brakes automatically in order to avoid
exceedin g th e set speed. Change int o a lower
gear in goo d time on lon g and steep downhill
gradients . This is especially important if th e
vehicl e is laden . By doin g so, you will mak e use
of th e braking effec t of th e engine. This relieves
th e load on th e brak e system and prevents th e
brakes from overheating and wearing to o
quickly.
You can use cruise control if you wan t to drive at
a steady speed for a prolonged period of time.
You can store any roa d speed abov e 20 mph
(30 km/h).
Import ant safety notesIf you fail to adapt your drivin g style, cruise con-
trol can neither reduce th e ris k of an acciden t
no r override th e laws of physics . Cruis e control
canno t tak e int o accoun t th e road, traffic and
weather conditions. Cruis e control is only an
aid. You are responsibl e for maintainin g a saf e
distanc e to th e vehicl e in front, for vehicl e
speed, for braking in goo d time and for stayin g in
lane.
Do no t use cruise control :R
in roa d and traffic condition s whic h do no t
allow you to maintai n a constan t speed, e.g. in
heav y traffic or on windin g roadsR
on slipper y roa d surfaces. Braking or accel-
erating could caus e th e drive wheels to lose
traction and th e vehicl e could then skidR
when there is poor visibility, e.g. due to fog ,
heav y rain or snow
If there is a chang e of drivers, advise th e ne w
driver of th e speed stored.Driving systems 169
Driving and parking Z

cause your vehicle to pull away unintention-
ally.
In such situations, brake if necessary.
DISTRONIC PLUS is then deactivated.
DISTRONIC PLUS with Steering Assist
and Stop&Go Pilot General notes
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot helps you keep the vehicle in the
center of the lane by means of moderate steer-
ing 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 multifunction camera C , at the top of
the windshield.
In a speed range from 0 - 37 mph (0 - 60 km/h),
Stop&Go Pilot focuses on the vehicle in front,
taking into account lane markings, e.g. when
you are following vehicles in a traffic jam.
At speeds of more than 37 mph (60 km/h),
Steering Assist focuses on clear lane markings
(left and right), only focusing on the vehicle in
front if clear lane markings are not present.
Steering Assist and Stop&Go Pilot do not pro-
vide any support if these conditions do not exist.
DISTRONIC PLUS must be active in order for the
function to be available.
Important safety notes
If you fail to adapt your driving style, DISTRONIC
PLUS with Steering Assist and Stop&Go Pilot
can neither reduce the risk of an accident nor
override the laws of physics. It cannot take
account of road, weather and traffic conditions.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot is only an aid. You are responsible
for the distance to the vehicle in front, for vehi- cle speed, for braking in good time and for stay-
ing in your lane.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot does not detect road and traffic
conditions and d oes not detect all road users. If
y ou are following a vehicle which is driving
towards the edge of the road, your vehicle could
come into contact with the curb or other road
boundaries. Be particularly aware of other road
users, e.g. cyclists, that are directly next to your
vehicle.
Obstacles such as building site huts on the lane
or projecting out into the lane are not detected.
An inappropriate steering intervention, e.g. after
intentionally driving over a lane marking, can be
corrected at any time if you steer slightly in the
opposite direction.
DISTRONIC PLUS with Steering Assist and
Stop&Go Pilot cannot continuously keep your
vehicle in lane. In some cases, steering inter-
vention is not sufficient to 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 provided by the system can be
impaired if: R
there is poor visibility, e.g. due to insufficient
illumination 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 windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera R
there are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
w o rk 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 too small
and the lane markings thus cannot be detec-
ted 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 strong shadows cast on the roadDriving systems 177
Driving and parking Z

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
take your hands off the steering wheel or do
not steer for a prolonged period of time
Steering Assist and Stop&Go Pilot are activated
again automatically after a lane change is com-
pleted.
Steering Assist and Stop&Go Pilot do not pro-
vide any support: R
on very sharp corners R
when a loss of tire pressure or a defective tire
has been detected and displayed
Pay attention also to the important safety notes
for DISTRONIC PLUS ( Y
page 171).
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 Assist
and Stop&Go Pilot are switched to passive.
DISTRONIC PLUS remains active.
Activating Steering Assist and Stop&Go
Pilot
X
Press button D .
Indicator lamp C lights up. The DTR+:
Steering Assist. On message appears in the multifunction display. Steering Assist and
Stop&Go Pilot are activated.
Information in the multifunction display
If Steering Assist and Stop&Go Pilot are activa-
ted but not ready for a steering intervention,
steering wheel symbol C appears in gray. If the
system provides you with support by means of
steering interventions, symbol C is shown in
green.
Deactivating Steering Assist and Stop&Go
Pilot X
Press button D .
Indicator lamp C goes out. The DTR+:
Steering Assist. Off message 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: R
when pulling away, especially on steep slopes R
when maneuvering 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 canceled and the HOLD
function deactivated when you depress the
accelerator pedal to pull away.178
Driving systems
Driving and parking

Problems with PARKTRONIC Problem
Possible causes/consequences and P Solutions
Only the red segments in
the PARKTRONIC warn-
ing displays are lit. You
also hear a warning tone
for approximately two
seconds.
PARKTRONIC is then
deactivated and the indi-
cator lamp on the
PARKTRONIC button
lights up. PARKTRONIC has malfunctioned and has switched off. X
If problems persist, have PARKTRONIC checked at a qualified spe-
cialist workshop.
Only the red segments in
the PARKTRONIC warn-
ing displays are lit.
PARKTRONIC is then
deactivated. The PARKTRONIC sensors are dirty or there is interference. X
Clean the PARKTRONIC sensors ( Y
page 323).X
Switch the ignition back on.
The problem may be caused by an external source of radio or ultra-
sound waves. X
See if PARKTRONIC functions in a different location.
Active Parking Assist
General notes Active Parking Assist is an electronic parking aid
with ultrasound. It measures the road on both
sides of the vehicle. A parking symbol indicates
a suitable parking space. Active steering inter-
vention and brake application can assist you
during parking and when exiting a parking
space. You may also use PARKTRONIC
( Y
page 184).
Important safety notes Active Parking Assist is merely an aid. It is not a
replacement for your attention to your immedi-
ate surroundings. You are always responsible
for safe maneuvering, parking and exiting a
parking space. Make sure that no persons, ani-
mals or objects are in the maneuvering range.
When PARKTRONIC is switched off, Active Park-
ing Assist is also unavailable.
For vehicles with the trailer tow hitch folded out,
the minimum length for parking spaces is
slightly longer.
If you have attached a trailer to your vehicle, you
should not use Active Parking Assist. Once the
electrical connection is established between your vehicle and the trailer, Active Parking
Assist is no longer available. PARKTRONIC is
deactivated for the rear area.
G WARNING
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.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for park-
ing, for example: R
where parking or stopping is prohibited R
in front of driveways or entrances and exits R
on unsuitable surfaces186
Driving systems
Driving and parking