brake sensor MERCEDES-BENZ S-Class COUPE 2017 C217 Owner's Manual

Battery (vehicle)Charging ........................................ 294
Display message ............................ 217
Important safety notes .................. 292
Jump starting ................................. 295
Belt
see Seat belts
Blind Spot Assist
see Active Blind Spot Assist
Blootooth
®
Connecting a different mobile
phone ............................................ 251
Bluetooth
®
Searching for a mobile phone ........ 250
see also Digital Operator's Man-
ual .................................................. 242
Telephony ...................................... 250
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 209
Notes ............................................. 333
Brake force distribution
see EBD (electronic brake force
distribution)
Brakes
ABS .................................................. 62
Adaptive Brake Assist ...................... 66
BAS .................................................. 62
BAS PLUS with Cross-Traffic
Assist ............................................... 62
Brake fluid (notes) ......................... 333
Display message ............................ 204
EBD .................................................. 68
High-performance brake system .... 144
Hill start assist ............................... 124
HOLD function ............................... 154
Important safety notes .................. 142
Maintenance .................................. 143
Parking brake ................................ 139
Riding tips ...................................... 142
Warning lamp ................................. 233
Breakdown
Where will I find...? ........................ 288
see Flat tire
see Towing away Brightness control (instrument
cluster lighting)
................................... 35
Buttons on the steering wheel ......... 187
C
California
Important notice for retail cus-
tomers and lessees .......................... 26
Calling up a malfunction
see Display messages
Calling up the climate control bar
Multimedia system ........................ 247
Calling up the climate control
menu
Multimedia system ........................ 247
Camera
see Rear view camera
Car
see Vehicle
Care
360° camera ................................. 284
Car wash ........................................ 280
Carpets .......................................... 287
Display ........................................... 285
Exhaust pipe .................................. 284
Exterior lights ................................ 283
General notes ................................ 280
Interior ........................................... 285
Matte finish ................................... 282
Night View Assist Plus ................... 285
Paint .............................................. 282
Plastic trim .................................... 285
Power washer ................................ 281
Rear view camera .......................... 284
Roof lining ...................................... 287
Seat belt ........................................ 286
Seat cover ..................................... 286
Selector lever ................................ 286
Sensors ......................................... 284
Steering wheel ............................... 286
Trim pieces .................................... 286
Washing by hand ........................... 281
Wheels ........................................... 282
Windows ........................................ 283
Wiper blades .................................. 283
Wooden trim .................................. 286
6Index

Light sensor (display message).......2 15
Lights
Adaptive Highbeam Assist PLUS .... 106
Automatic headlamp mode ............ 104
Cornering light function ................. 106
Fogged up headlamps .................... 107
General notes ................................ 104
Hazard warning lamps ................... 106
High beam flasher .......................... 105
High-beam headlamps ................... 105
Light switch ................................... 104
Low-beam headlamps .................... 105
Parking lamps ................................ 105
Rear fog lamp ................................ 105
Setting exterior lighting ................. 104
Standing lamps .............................. 105
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 201
Switching the spotlight on/off ....... 201
Turn signals ................................... 105
see Interior lighting
Loading guidelines ............................ 253
Locking
see Central locking
Locking (doors)
Automatic ........................................ 79
Emergency locking ........................... 79
From inside (central locking but-
ton) ..................................................7 8
Locking centrally
see Central locking
Low-beam headlamps
Display message ............................ 215
Switching on/off .......................... .105
Lumbar support
Adjusting the 4-way lumbar sup-
port ..................................................9 5
M
M+S tires............................................ 305
Magic Body Control ........................... 156
MAGIC SKY CONTROL ......................... 90
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) .................................................. 282 MBC
see Magic Body Control
mbrace
Call priority ....................................2 65
Display message ............................ 209
Downloading destinations
(COMAND) ..................................... 265
Downloading routes ....................... 268
Emergency call .............................. 262
General notes ................................ 261
Geo fencing ................................... 268
Info call button .............................. 264
Locating a stolen vehicle ...............2 67
Remote fault diagnosis .................. 267
Remote vehicle locking .................. 266
Roadside Assistance button .......... 263
Search & Send ............................... 265
Self-test ......................................... 262
Speed alert .................................... 268
System .......................................... 262
Triggering the vehicle alarm ........... 268
Vehicle remote unlocking .............. 266
Mechanical key
Function/notes ................................ 74
General notes .................................. 74
Inserting .......................................... 74
Locking vehicle ................................ 79
Removing ......................................... 74
Unlocking the driver's door .............. 79
Media Interface
USB port in the armrest of the
center console ............................... 255
see Digital Operator's Manual
Memory card (audio) ......................... 194
Memory function
Seats, steering wheel, exterior
mirrors ........................................... 102
Mercedes-Benz Intelligent Drive
360°camera .................................. 171
ABS (Anti-lock Brake System) .......... 62
Active Blind Spot Assist ................. 180
Active Lane Keeping Assist ............ 183
Active Parking Assist ..................... 163
ATTENTION ASSIST ........................ 175
BAS (Brake Assist) ........................... 62
BAS PLUS (Brake Assist PLUS)
with C
ross-Traffic Assist .................. 62
Index13

PARKTRONICDeactivating/activating ................. 162
Driving system ...............................1 60
Function/notes .............................1 60
Important safety notes .................. 160
Problem (malfunction) ................... 163
Range of the sensors ..................... 161
Warning display ............................. 162
PASSENGER AIR BAG
Display message ............................ 213
Indicator lamps ................................ 42
Problem (malfunction) ................... 213
Perfume atomizer
Operating ....................................... 117
Problem (malfunction) ................... 118
Setting the perfume intensity
(multimedia system) ...................... 247
Vial ................................................ 117
Pets in the vehicle ............................... 61
Phone book
see also Digital Operator's Man-
ual .................................................. 242
Plastic trim (cleaning instruc-
tions) .................................................. 285
Power locks ......................................... 79
Power washers .................................. 281
Power windows
see Side windows
PRE-SAFE
®(anticipatory occupant
protection)
Display message ............................ 210
Operation ......................................... 55
PRE-SAFE
®Brake
Activating/deactivating ................. 199
Display message ............................ 210
Function/notes ................................ 68
Important safety notes .................... 69
Warning lamp ................................. 239
PRE-SAFE
®PLUS (anticipatory
occupant protection PLUS)
Display message ............................ 210
Operation ......................................... 56
Program selector button .................. 131
Protection against theft
ATA (Anti-Theft Alarm system) ......... 71
Immobilizer ...................................... 71 Protection of the environment
General notes .................................. 25
Pulling away
Automatic transmission ................. 124
General notes ................................ 124
Hill start assist ............................... 124
Q
QR codeMercedes-Benz Guide App ................. 1
Rescue card ..................................... 30
Qualified specialist workshop ........... 29
Quick access for telephone
Sending DTMF tones ...................... 245
R
Radiator cover ................................... 274
Radio
Selecting a station ......................... 193
Radio mode
see also Digital Operator's Man-
ual .................................................. 242
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 28
Reading lamp ..................................... 108
Rear compartment
Setting the air vents ...................... 119
Stowage compartment .................. 255
Rear fog lamp
Display message ............................ 215
Switching on/off ........................... 105
Rear seats
Overview .......................................... 40
Rear view camera
Cleaning instructions ..................... 284
Displays in the COMAND display ... 168
Function/notes ............................. 167
Rear window blind ............................ 258
Rear window defroster
Problem (malfunction) ................... 116
Switching on/off ........................... 116
Rear-view mirror
Dipping (automatic) ....................... 101
16Index

Seat backrest display message ..... 229
Seat heating .................................... 96
Seat heating problem ...................... 97
Seat ventilation ................................ 96
Storing settings (memory func-
tion) ............................................... 103
Switching AIRSCARF on/off ............ 97
Switching seat heating on/off ......... 96
Switching seat ventilation on/off .... 96
Section
Wheels and tires ............................ 303
Securing a load
see Securing cargo
Securing cargo .................................. 256
Selector lever
Cleaning ......................................... 286
see Automatic transmission
Sensors (cleaning instructions) ....... 284
Service menu (on-board com-
puter) .................................................. 197
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 333
Coolant (engine) ............................ 333
Engine oil ....................................... 332
Fuel ................................................ 331
Important safety notes .................. 330
Refrigerant (air-conditioning sys-
tem) ............................................... 334
Washer fluid ................................... 334
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 242
Setting the language
see also Digital Operator's Man-
ual .................................................. 242
Setting the time
see also Digital Operator's Man-
ual .................................................. 242
Settings
Factory (on-board computer) ......... 202
On-board computer ....................... 197
SETUP (on-board computer) ............. 202
Side impact air bag ............................. 48
Side marker lamp (display mes-
sage) ................................................... 215 Side windows
Cleaning ......................................... 283
Convenience closing feature ............ 87
Convenience opening feature .......... 86
Important safety information ........... 85
Opening/closing .............................. 86
Problem (malfunction) ..................... 88
Resetting ......................................... 87
Reversing feature ............................. 85
SIRIUS services
see also Digital Opera
tor's Man-
ual .................................................. 242
SmartKey
Changing the battery ....................... 75
Changing the programming ............. 74
Checking the battery ....................... 75
Convenience closing feature ............ 87
Convenience opening feature .......... 86
Display message ............................ 230
Door central locking/unlocking ....... 72
Important safety notes .................... 72
KEYLESS-GO start function .............. 74
Loss ................................................. 76
Mechanical key ................................ 74
Overview .......................................... 72
Positions (ignition lock) ................. 121
Problem (malfunction) ..................... 76
Starting the engine ........................ 123
Smartphone
Starting the engine ........................ 123
SMS
see also Digital Operator's Man-
ual .................................................. 242
Snow chains ...................................... 305
Sockets
Center console .............................. 260
General notes ................................ 260
Rear compartment ......................... 260
Trunk ............................................. 260
Sound
Switching on/off ........................... 243
Special seat belt retractor .................. 57
Specialist workshop ............................ 29
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 201
18Index

Protecting the environment
General notes
HEnvironmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in a manner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected by these factors:
Roperating conditions of your vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel con-
sumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Rremove roof racks once you no longer need
them.
Ra regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
Ralways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal when
starting the engine.
Rdo not warm up the engine when the vehicle
is stationary.
Rdrive carefully and maintain a safe distance
from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each gear
only up to 00C3of its maximum engine speed.
Rswitch off the engine in stationary traffic.
Rkeep an eye on the vehicle's fuel consump-
tion.
Environmental concerns and recom-
mendations
Wherever the operating instructions require you
to dispose of materials, first try to regenerate or
re-use them. Observe the relevant environmen-
tal rules and regulations when disposing of
materials. In this way you will help to protect the
environment.
Genuine Mercedes-Benz parts
HEnvironmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
!Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed in
the following areas of your vehicle:
Rdoors
Rdoor pillars
Rdoor sills
Rseats
Rcockpit
Rinstrument cluster
Rcenter console
Do not install accessories such as audio sys-
tems in these areas. Do not carry out repairs or welding. You could impair the operating
efficiency of the restraint systems.
Have aftermarket accessories installed at a
qualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels as
well as accessories relevant to safety which
have not been approved by Mercedes-Benz. This
could lead to malfunctions in safety-relevant
Genuine Mercedes-Benz parts25
Introduction
Z

Function
PRE-SAFE®intervenes:
Rin emergenc ybraking situations, e.g. when
BA Sis activated
Rin critical driving situations, e.g. when physi-
cal limits are exceeded and th evehicl eunder-
steer sor oversteer sseverely
Rvehicles wit hth eDrivin gAssistanc epackage:
when adriver assistanc esystem intervenes
powerfully or th eradar sensor system detect s
an imminent danger of collision in certai nsit -
uation s
PRE-SAF E
®takes thefollowin gmeasures
depending on th ehazardous situation detected:
Rth efron tseat belt sare pre-tensioned.
Rif th evehicl eskids, th efron tside windows are
closed.
Rth efront-passenger seat is adjusted if it is in
an unfavorable position .
Rvehicles with amulticontour seat :th eair pres-
sure in th eside bolsters of th eseat backrest
is increased.
If th ehazardous situation passes without result -
ing in an accident, PRE-SAF E
®slackens thebelt
pre-tensioning .On vehicles wit hmulticontour
seats, th eair pressur ein th eside bolsters is
reduce dagain .All setting smade by PRE-SAF E
®
can then be reversed.
If theseat belt pre-tensioning is no treduced:
XMov eth eseat backrest or seat bac kslightly
when th evehicl eis stationary.
The seat belt pre-t ens
ioning is reduce
dand
th elockin gmechanism is released.
The seat-belt adjustmen tis an integral part of
th ePRE-SAF E
®convenience function .Informa-
tion about th econvenience function can be
foun dunder "Belt adjustment" (
Ypage 46).
PRE-SAFE®PLUS (anticipatory occu-
pant protection system PLUS)
Introduction
PRE-SAF E®PLUSis only available in vehicles
wit hth eDrivin gAssistanc epackage.
Usin gth eradar sensor system, PRE-SAF E
®
PLUSis able to detect that ahead-on or rear-end
collision is imminent .In certai nhazardous sit -uations, PRE-SAF
E
®PLUStakes pre-emptive
measures to protect th evehicl eoccupants.
Important safety notes
The intervention of PRE-SAF E®PLUScanno t
preven tan imminent collision .
The driver is no twarned when PRE-SAF E
®PLUS
intervenes.
PRE-SAF E
®PLUSdoes no tinterven eif th evehi-
cle is backin gup.
When driving ,or when parking or exiting apark -
ing spac ewit hassistanc efrom Active Parking
Assist ,PRE-SAF E
®PLUSwill no tapply th e
brakes.
Function
PRE-SAF E®PLUSintervenes in certai nsitua-
tion sif th eradar sensor system detect san
imminent head-on or rear-end collision .
PRE-SAF E
®PLUStakes th efollowin gmeasures
depending on th ehazardous situation detected:
Rif th eradar sensor system detect sthat a
head-on collision is imminent ,th eseat belt s
are pre-tensioned.
Rif th eradar sensor system detect sthat arear -
en dcollision is imminent :
-thebrak epressur eis increased if th edriver
applie sth ebrakes when th evehicl eis sta-
tionary.
-th eseat belt sare pre-tensioned.
The PRE-SAF E®PLUSbraking application is can -
celed:
Rif th eaccelerato rpedal is depressed when a
gear is engage d
Rif theris kof acollision passes or is no longer
detected
Rif DISTRONI CPLU Sindicates an intention to
pull away
If th ehazardous situation passes without result -
ing in an accident, th eoriginal setting sare
restored .
56Occupant safety
Safety

ABS (Anti-lock Braking System)
Gene ral inform ation
ABSregulates brak epressur ein suc h away that
th ewheels do no tloc kwhen you brake. This
allows you to continu esteering th evehicl ewhen
braking .
The 0025 ABSwarning lamp in th einstrumen t
cluste rlights up when th eignition is switched
on .It goe sout when th eengin eis running.
AB Sworks from aspee dof about 5mph
(8 km/h), regardless of road-surface conditions.
AB Sworks on slipper ysurfaces, eve nwhen you
only brak egently.
Import ant safety notes
iObserveth e"Importan tsafet ynotes" sec -
tion (Ypage 61).
GWARNIN G
If AB Sis faulty, th ewheels could loc kwhen
braking .The steerabilit yand braking charac -
teristics may be severely impaired. Addition -
ally, further drivin gsafet ysystems are deac -
tivated. There is an increased danger of skid-
din gand accidents .
Drive on carefully. Hav eAB Schecke dimme-
diately at aqualified specialis tworkshop .
When AB Sis malfunctioning ,other systems ,
includin gdrivin gsafet ysystems ,will also
become inoperative. Observ eth einformation
on th eAB Swarning lamp (
Ypage 234) and dis-
play message swhic hmay be shown in th e
instrumen tcluste r (
Ypage 204).
Braking
XIf ABS intervenes: continueto depress th e
brak epedal vigorously until th ebraking sit -
uation is over.
XTo make afull brak eapplication: depress
th ebrak epedal wit hfull force .
If AB Sintervenes when braking ,you will fee l a
pulsing in th ebrak epedal .
The pulsating brak epedal can be an indication
of hazardous road conditions, and function sas a
reminder to tak eextr acar ewhile driving.
BAS (Brake Assist System)
Gene ral inform ation
BASoperate sin emergenc ybraking situations.
If you depress th ebrak epedal quickly, BA S
automatically boosts th ebraking force ,thus
shortening th estopping distance.
Imp ortant safety notes
iObserv eth e"Importan tsafet ynotes" sec -
tion (Ypage 61) .
GWARNIN G
If BA Sis malfunctioning ,th ebraking distanc e
in an emergenc ybraking situation is
increased. There is aris kof an accident.
In an emergenc ybraking situation ,depress
th ebrak epedal wit hfull force .AB Sprevents
th ewheels from locking .
Brakes
XKeepth ebrak epedal firmly depressed until
th eemergenc ybraking situation is over.
AB Sprevents th ewheels from locking .
The brakes will function as usual once you
release th ebrak epedal .BA Sis deactivated.
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Genera l inform ation
BASPLU Scan help you to minimiz eth eris kof a
collision wit h avehicl eor apedestrian and
reduce th eeffects of suc h acollision .If BA S
PLU Sdetects adanger of collision ,you are
assisted when braking .
iPay attention to theimportant safet ynote s
in th e"Drivin gsafet ysystems "section
(
Ypage 61).
BA SPLU Sis only available in vehicles wit hth e
Drivin gAssistance Plus package.
Fo rBA SPLU Sto assist you when driving, th e
radar sensor system and th ecamera system
mus tbe operational.
62Driving safety systems
Safety

With the help of a sensor system and a camera
system, BAS PLUS can detect obstacles:
Rthat are in the path of your vehicle for an
extended period of time
Rthat cross the path of your vehicle
In addition, pedestrians in the path of your vehi-
cle can be detected.
BAS PLUS detects pedestrians by using typical
characteristics such as the body contours and
posture of a person standing upright.
If the radar sensor system or the camera system is malfunctioning, BAS PLUS functions are
restricted or no longer available. The brake sys-
tem is still available with complete brake boost-
ing effect and BAS.
iObserve the restrictions described in the
"Important safety notes" section
(
Ypage 63).
Important safety notes
GWARNING
BAS PLUS cannot always clearly identify
objects and complex traffic situations.
In such cases, BAS PLUS may:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
GWARNING
BAS PLUS cannot always clearly identify peo- ple, this is especially the case if they are mov-
ing. BAS PLUS cannot intervene in these
cases. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
GWARNING
BAS PLUS does not react:
Rto small people, e.g. children
Rto animals
Rto oncoming vehicles
Rwhen cornering
As a result, BAS PLUS may not intervene in all critical situations. There is a risk of an acci-
dent.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In the event of snowfall or heavy rain, the rec-
ognition can be impaired.
Recognition by the radar sensor system is also
impaired if:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is interference by other radar sources
Rthere are strong radar reflections, for exam-
ple in parking garages
Ra narrow vehicle is traveling in front, e.g. a
motorbike
Ra vehicle is traveling in front on a different line
Rvehicles quickly move into the radar sensor
system detection range
Recognition by the camera system is also
impaired in the event of:
Rdirt on the camera or if the camera is covered
Rglare on the camera system, e.g. from the sun being low in the sky
Rdarkness
Ror if:
-pedestrians move quickly, e.g. into the path
of the vehicle
-the camera system no longer recognizes a
pedestrian as a person due to special cloth-ing or other objects
-a pedestrian is concealed by other objects
-the typical outline of a person is not distin-
guishable from the background
Following damage to the front end of the vehicle,
have the configuration and operation of the
radar sensors checked at a qualified specialist
workshop. This also applies to collisions at slow
speeds where there is no visible damage to the
front of the vehicle.
Following damage to the windshield, have the
configuration and operation of the camera sys-
tem checked at a qualified specialist workshop.
Driving safety systems63
Safety
Z

Function
To avoid acollision ,BA SPLU Scalculates th e
brak eforce necessar yif:
Ryou approac han obstacle ,and
RBA SPLU Shas detected aris kof collision
When drivin gat aspeed
under20 mph(30 km/h) :if you depress th e
brak epedal, BA SPLU Sis activated. The
increas ein brak epressur ewill be carried out at
th elast possible moment.
When drivin gat aspeed
abov e20 mph(30 km/h) :if you depress th e
brak epedal sharply, BA SPLU Sautomatically
raises th ebrak epressur eto avalue adapted to
th etraffic situation .
BA SPLU Sprovides brakin gassistanc ein haz -
ardous situation swit hvehicles in fron twithin a
speed range between 4mph (7 km/h) and
15 5mph (25 0km/h).
At speeds of up to approximately 44 mph
(70 km/h), BA SPLU Scan reac tto :
Rstationary objects in th epat hof your vehicle,
e.g. stoppe dor parked vehicles
Rpedestrian sin th epat hof your vehicl e
Robstacles crossin gyour path, whic hmov ein
th edetection range of th esensor sand are
recognized by them
iIf BA SPLU Sdemand sparticularly high brak -
in g force ,preventative passenger protection
measures (PRE-SAF E
®)are activated simulta-
neousl y (Ypage 55) .
XKeepth ebrak epedal depressed until th e
eme rgenc ybrakin gsituation is over.
AB Sprevents th ewheels from locking .
BA SPLU Sis deactivated and th ebrakes func-
tion as usual, if:
Ryou release th ebrak epedal .
Rthere is no longer aris kof collision .
Rno obstacle is detecte din fron tof your vehi-
cle .
Ryou depress th eaccelerato rpedal .
Ryou activat ekickdown .
COLLISION PREVENTION ASSIST
PLUS
Gene ral informa tion
COLLISION PREVENTION ASSIST PLU Sconsist s
of adistanc ewarnin gfunction wit han autono-
mous brakin gfunction and Adaptive Brake
Assist.
COLLISION PREVENTION ASSIST PLU Scan help
you to minimiz eth eris kof afront-en dcollision
wit h a vehicl eahead or reduce th eeffects of
suc h a collision .
If COLLISION PREVENTION ASSIST PLU S
detects that there is aris kof acollision ,you will
be warned visually and acoustically. If you do no t
reac tto th evisual and audibl ecollision warning,
autonomous brakin gcan be initiated in critica l
situations. If you apply th ebrak eyourself in a
critica lsituation ,th eCOLLISION PREVENTION
ASSIST PLU Sadaptive Brake Assis tassist syou.
Impor tant safety notes
In particular, th edetection of obstacles can be
impaire dif:
Rthere is dir ton th esensor sor anythin gelse
coverin gth esensor s
Rthere is snow or heav yrain
Rthere is interferenc eby other rada rsource s
Rthere are stron grada rreflections, for exam-
ple in parkin ggarages
Ranarrow vehicl eis travelin gin front, e.g. a
motorbik e
Ravehicl eis travelin gin fron ton adifferen tlin e
Rthevehicl eis ne wor after aservic eon th e
COLLISION PREVENTION ASSIST PLU Ssys-
te m
Observ eth enote sin th esection on breaking -
in (
Ypage 120).
Following damage to th efron ten dof th evehicle,
hav eth econfiguration and operation of th e
rada rsensor checke dat aqualified specialist
workshop .This also applie sto collision sat slow
speeds wher ethere is no visible damage to th e
fron tof th evehicle.
Activating/deactivating
The COLLISION PREVENTION ASSIST PLU Sis
automatically active after switchin gon th eigni-
tion .
64Driving safety systems
Safety

You can activate or deactivate COLLISION PRE-
VENTION ASSIST PLUS in the on-board com-
puter (
Ypage 198). When deactivated, the dis-
tance warning function and the autonomous
braking function are also deactivated.
If COLLISION PREVENTION ASSIST PLUS is
deactivated, the 00D4symbol appears in the
assistance graphics display.
Distance warning function
General information
iObserve the "Important safety notes" sec-
tion for driving safety systems (Ypage 61).
The distance warning function can help you to
minimize the risk of a front-end collision with a
vehicle ahead or reduce the effects of such a
collision.
With the help of the radar sensor system, the
distance warning function can detect obstacles
that are in the path of your vehicle for an exten-
ded period of time.
If the distance warning function detects that
there is a risk of a collision, you will be warned
visually and acoustically.
Starting at a speed of approximately 4 mph
(7 km/h), the distance warning function warns
you if you rapidly approach a vehicle in front. An
intermittent warning tone will then sound, and
the 00BA distance warning lamp will light up in
the instrument cluster.
Up to a speed of approximately 44 mph
(70 km/h), the distance warning function can
also react to stationary obstacles, such as stop-
ped or parked vehicles.
Important safety notes
GWARNING
The distance warning function does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
GWARNING
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and do not rely solely on the distance
warning function.
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action, provided it is safe to do
so.
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the system to display a warning.
Autonomous braking function
If the driver does not react to the distance warn-
ing signal in a critical situation, COLLISION PRE-
VENTION ASSIST PLUS can assist with the
autonomous braking function.
The autonomous braking function is available in
the following speed ranges:
Rfrom 4 mph (7 km/h) to approx. 65 mph
(105 km/h) for moving objects
Rfrom 4 mph (7 km/h) to approx. 31 mph
(50 km/h) for stationary objects
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause the Autonomous Braking Func-
tion to intervene.
If the autonomous braking function requires a
particularly high braking force, preventative
passenger protection measures (PRE-SAFE
®)
are activated simultaneously (Ypage 55).
Driving safety systems65
Safety
Z