sensor MERCEDES-BENZ GLE COUPE 2019 Owner's Manual

Calling up a malfunction
see Display messages
Car
see Vehicle
Care
360° camera ................................ .305
Car wash ........................................ 301
Carpets .......................................... 308
Display .......................................... .307
Exhaust pipe .................................. 306
Exterior lights ................................ 305
Gear or selector lever .................... 307
Interior .......................................... .307
Matte finish ................................... 303
Notes ............................................. 301
Paint .............................................. 303
Plastic trim ................................... .307
Power washer ................................ 302
Rear view camera .......................... 305
Roof lining ...................................... 308
Seat belt ........................................ 308
Seat cover ..................................... 307
Sensors ......................................... 305
Side running board ........................ 305
Steering wheel ............................... 307
Trim pieces ................................... .307
Washing by hand ........................... 302
Wheels .......................................... .304
Windows ........................................ 304
Wiper blades .................................. 305
Wooden trim .................................. 307
Cargo compartment enlargement
Important safety notes .................. 275
Cargo compartment floor
Important safety notes .................. 278
Opening/closing ............................ 279
Stowage well (under) ..................... 278
Cargo tie down rings ......................... 276
CD
see also Digital Operator's Man-
ual ................................................. .264
CD player (on-board computer) ........214
Center console
Lower section .................................. 39
Upper section .................................. 38
Central locking
Automatic locking (on-board com-
puter) ............................................. 219 Locking/unlocking (SmartKey) .......
.74
Child
Restraint system .............................. 59
Child seat
Forward-facing restraint system ...... 62
LATCH-type (ISOFIX) child seat
anchors ............................................ 60
On the front-passenger seat ............ 61
Rearward-facing restraint system .... 62
Top Tether ...................................... .60
Child-proof locks
Important safety notes .................... 62
Rear door s ...................................... .63
Children
Special seat belt retractor .............. .58
Children in the vehicle
Important safety notes .................... 57
Cigarette lighter ................................ 283
Cleaning
Mirror turn signal .......................... .305
Trailer tow hitch ............................ .306
Climate control
Automatic climate control (3-
zone) .............................................. 117
Controlling automatically .............. .120
Cooling with air dehumidification .. 119
Defrosting the windows ................. 122
Defrosting the windshield .............. 122
Dual-zone automatic climate con-
trol ................................................. 115
General notes ................................ 115
Indicator lamp ................................ 120
Ionization ....................................... 124
Maximum cooling .......................... 122
Notes on using the automatic cli-
mate control .................................. 119
Overview of systems ..................... .115
Problem with the rear window
defroster ........................................ 123
Problems with cooling with air
dehumidification ............................ 120
Rear control panel ......................... 117
Refrigerant ..................................... 363
Refrigerant filling capacity ............. 364
Setting the air distribution ............. 121
Setting the air vents ..................... .124
Setting the airflow ......................... 121 Index
7

Using ............................................. 349
Jump starting (engine) ......................318 K
Key positions SmartKey ....................................... 127
Start/Stop button .......................... 127
KEYLESS-GO
Activating ......................................... 75
Convenience closing feature ............ 88
Deactivation ..................................... 75
Display message ............................ 250
Locking ............................................ 75
Start function ................................... 76
Starting the engine ........................ 129
Unlocking ......................................... 75
Kickdown
Driving tips ................................... .138
Manual gearshifting ....................... 140
Knee bag .............................................. 48 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 217
Display message ............................ 241
Function/informatio n.................... 193
see Active Lane Keeping Assist
Lap time (RACETIMER) ...................... 221
LATCH-type (ISOFIX) child seat
anchors ................................................ 60
Level control
AIRMATIC ...................................... 170
Level control (display message) ...... 240
License plate lamp (display mes-
sage) ................................................... 235
Light function, active
Display message ............................ 235
Light sensor (display message) ....... 235
Light switch
Operation ....................................... 106
Lights
Activating/deactivating the Intel-
ligent Light System ........................ 218
Active light function ....................... 108 Adaptive Highbeam Assist ............. 109
Automatic headlamp mode ............ 106
Fog lamps (extended) .................... 109
Hazard warning lamps ................... 108
High beam flasher .......................... 107
High-beam headlamp s................... 107
Highway mod e............................... 109
Light switch ................................... 106
Low-beam headlamp s.................... 107
Parking lamps ................................ 107
Rear fog lamp ................................ 107
Standing lamps .............................. 107
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 218
Turn signals ................................... 107
see Interior lighting
Loading guidelines ............................ 272
Locking
see Central locking
Locking (doors)
Automatic ........................................ 81
Emergency locking ........................... 81
From inside (central locking but-
ton) .................................................. 80
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 219
Low-beam headlamps
Display message ............................ 235
Switching on/of f........................... 107
Lumbar support
Adjusting (on the seat) ..................... 98
Luxury head restraints ....................... 97 M
M+S tires ............................................ 329
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) .................................................. 303
mbrace
Call priority .................................... 288
Display message ............................ 229
Downloading destinations
(COMAND) ..................................... 289 Index
13

P
Paddle shifters see Steering wheel paddle shifters
Paint code number ............................358
Paintwork (cleaning instructions) ... 303
Panic alarm .......................................... 42
Panorama roof with power tilt/
sliding panel
Important safety notes .................... 89
Operating ......................................... 90
Operating the roller sunblinds for
the sliding sunroof ........................... 91
Problem (malfunction) ..................... 92
Rain closing feature ......................... 91
Reversing feature ............................ .90
Parcel shelf ........................................2 77
Parking
Important safety notes .................. 144
Parking brake ................................ 145
Position of exterior mirror, front-
passenger side ............................... 104
Rear view camera .......................... 180
see PARKTRONIC
Parking aid
see 360° camera
see Exterior mirrors
see PARKTRONIC
Parking Assist PARKTRONIC
Deactivating/activating ................. 175
Driving system ............................... 173
Function/notes ............................ .173
Important safety notes .................. 173
Problems (malfunctions) ................ 176
Sensor range ................................. 173
Towing a trailer .............................. 173
Warning displa y............................. 174
Parking assistance
see Driving system
Parking brake
Applying automaticall y................... 146
Applying or releasing manually ...... 145
Display message ............................ 226
Electric parking brake .................... 145
Emergency braking ........................ 146
General notes ................................ 145
Releasing automaticall y................. 146
Warning lamp ................................. 259 Parking lamps
Switching on/of f........................... 107
PASSENGER AIR BAG
Display message ............................ 233
Indicator lamps ................................ 43
Problem (malfunction) ................... 233
Pets in the vehicle ............................... 63
Phone book
see also Digital Operator's Man-
ual .................................................. 264
Plastic trim (cleaning instruc-
tions) .................................................. 307
Power locks ......................................... 81
Power washers .................................. 302
Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection)
Display message ............................ 230
Operation ......................................... 56
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS)
Display message ............................ 230
Operation ......................................... 57
Protection against theft
ATA (Anti-Theft Alarm system )......... 73
Immobilizer ...................................... 73
Protection of the environment
General notes .................................. 26
Pulling away
Automatic transmission ................. 130
General notes ................................ 130
Hill start assist ............................... 130
Trailer ............................................ 130 Q
QR code Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 31
Qualified specialist workshop ........... 30 R
RACE TIMER (on-board computer,
Mercedes-AMG vehicles) .................. 221
Radiator cover ................................... 29716
Index

SD memory card
see also Digital Operator's Man-
ual .................................................. 264
Selecting ........................................2 14
Search & Send
see also Digital Operator's Man-
ual ................................................. .264
Seat
Correct driver's seat position ........... 94
Seat belts
Adjusting the driver's and front-
passenger seat bel t......................... 46
Adjusting the height ......................... 46
Cleaning ......................................... 308
Correct usage .................................. 45
Fastening ......................................... 46
Important safety guidelines ............. 44
Introduction ..................................... 43
Releasing ......................................... 46
Switching belt adjustment on/off
(on-board computer) ...................... 219
Warning lamp ................................. 251
Warning lamp (function) ................... 46
Seats
Adjusting (electrically) ..................... 95
Adjusting the 4-way lumbar sup-
port .................................................. 98
Adjusting the head restraint ............ 96
Calling up a stored setting (mem-
ory function) .................................. 105
Cleaning the cover ......................... 307
Folding the rear bench seat for-
wards/back ................................... 275
Important safety notes .................... 94
Overview .......................................... 94
Seat heating problem ...................... 99
Seat ventilation problem .................. 99
Storing settings (memory func-
tion) ............................................... 105
Switching seat heating on/of f......... 98
Switching seat ventilation on/of f.... 99
Section
Sliding sunroof ................................. 89
Selector lever
Cleaning ......................................... 307
Sensors (cleaning instructions) ....... 305
Service menu (on-board com-
puter) .................................................. 217 Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 362
Coolant (engine) ............................ 362
Engine oil ....................................... 361
Fuel ................................................ 360
Important safety notes .................. 359
Refrigerant (air-conditioning sys-
tem) ............................................... 363
Washer fluid ................................... 363
Setting the air distribution ............... 121
Setting the airflow ............................ 121
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 264
Setting the language
see also Digital Operator's Man-
ual .................................................. 264
Setting the time
see also Digital Operator's Man-
ual .................................................. 264
Settings
Factory (on-board computer) ......... 220
On-board computer ....................... 217
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 220
Side impact air bag ............................. 49
Side marker lamp (display mes-
sage) ................................................... 235
Side windows
Cleaning ......................................... 304
Convenience closing feature ............ 87
Convenience opening feature .......... 87
Important safety information ........... 86
Opening/closing .............................. 86
Overview .......................................... 86
Problem (malfunction) ..................... 88
Resetting ......................................... 88
Reversing feature ............................. 86
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 264
Sliding sunroof
see Panorama roof with power
tilt/sliding panel 18
Index

Protecting the environment
General notes
H
Environmental 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:
R operating conditions of your vehicle
R your personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
R avoid short trips as these increase fuel con-
sumption.
R always make sure that the tire pressures
are correct.
R do not carry any unnecessary weight.
R remove roof racks once you no longer need
them.
R a regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
R always have service work carried out at a
qualified specialist workshop.
Personal driving style:
R do not depress the accelerator pedal when
starting the engine.
R do not warm up the engine when the vehicle
is stationary.
R drive carefully and maintain a safe distance
from the vehicle in front.
R avoid frequent, sudden acceleration and
braking. R
change gear in good time and use each gear
only up to 00C3of its maximum engine speed.
R switch off the engine in stationary traffic.
R keep 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 orre-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
H
Environmental 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:
R doors
R door pillars
R door sills
R seats
R cockpit
R instrument cluster
R center 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 26
Genuine Mercedes-Benz partsIntroduction

nance requirements as well as technical events
and malfunctions.
This information generally documents the con-
dition of a component, a module, a system or the
surroundings, such as:
R Operating states of system components (e.g.
fill levels, battery status, tire pressure)
R Status messages concerning the vehicle or its
individual components (e.g. wheel rpm/
speed, deceleration, lateral acceleration, indi- cation of whether seat belts are fastened)
R Malfunctions and defects in important system
components (e.g. lights, brakes)
R Information about events leading to vehicle
damage
R System responses in special driving situa-
tions (e.g. air bag deployment, intervention of
stability control systems)
R Ambient conditions (e.g. temperature, rain
sensor)
In addition to performing the actual control unit
function, this data is used by manufacturers to
detect and rectify malfunctions and to optimize vehicle functions. Most of this data is volatile
and processed only in the vehicle itself. Only a
small part of the data is stored in event or mal-
function memories.
When you use services, the technical data from
the vehicle can be read out by service network
employees (e.g. workshops, manufacturers) or
third parties (e.g. breakdown services). Services
can include repair services, maintenance pro-
cesses, warranty cases and quality assurance
measures. The data are read out via the con-
nection for the diagnostics connection in the
vehicle, which is required by law. The relevant
offices in the service network or third parties
collect, process and use the data. This data
documents the vehicle's technical states, is
used to help in finding malfunctions and improv-
ing quality and is sent to the manufacturer
where necessary. In addition, the manufacturer is subject to product liability. The manufacturerneeds technical data from vehicles for this pur-
pose.
Malfunction memories in the vehicle can be
reset by a service center during repair or service
work.
You can incorporate data into the vehicle's com- fort and infotainment functions yourself as part
of the selected equipment. These include, for example:
R Multimedia data such as music, films or pho-
tos for playback in an integrated multimedia
system
R Address book data for use in conjunction with
an integrated hands-free system or an inte-
grated navigation system
R Navigation destinations that have been
entered
R Data about using Internet services
This data can be saved locally in the vehicle or
located on a device that you have connected to
the vehicle (e.g. smartphone, USB memory stick or MP3 player). If this data is saved in the vehi-
cle, you can delete it at any time. This data is
sent to third parties only at your request, par-
ticularly when you use online services in accord- ance with the settings that you have selected.
You can save and change comfort settings/
customizations in the vehicle at any time.
Depending on the equipment in question, these can include:
R Seat and steering wheel position settings
R Suspension and climate control settings
R Custom settings such as interior lighting
If your vehicle is equipped appropriately, you
can connect your smartphone or another mobile end device to the vehicle. You can control this by
means of the control elements integrated in the vehicle. The smartphone's picture and sound
can be output via the multimedia system. Spe-
cific items of information are also sent to your
smartphone.
Depending on the type of integration, this can
include:
R General vehicle information
R Position data
This allows the use of selected smartphone
apps, such as navigation or music player apps.
There is no additional interaction between the
smartphone and the vehicle, particularly active
access to vehicle data. The type of additional
data processing is determined by the provider of the app being used. Whether you can configure
settings for it and, if so, which ones, depends on
the app and your smartphone's operating sys-
tem. 32
Data stored in the vehicleIntroduction

bag as it deploys, vehicle occupants must
ensure the following points.
Before commencing your journey, ensure that:
R there are no people, animals or objects
between the vehicle occupants and an air bag
R there are no objects between the seat, door
and B-pillar
R there are no hard objects, e.g. coat hangers,
hanging on the grab handles or coat hooks
R no accessories, such as cup holders, are
attached to the vehicle within the deployment
area of an air bag, e.g. to doors, side windows,
rear side trim or side walls
R no heavy, sharp-edged or fragile objects are in
the pockets of your clothing. Store such
objects in a suitable place G
WARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objects to it. G
WARNING
Sensors to control the air bags are located in the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the
function of the sensors being impaired. The air bags might therefore not function properly
anymore. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work- shop.
Front air bags !
Do not place heavy objects on the front-
passenger seat. This could cause the system
to identify the seat as being occupied. In the
event of an accident, the restraint systems on the front-passenger side may be triggered
and have to be replaced. Driver's air bag
0043deploys in front of the steer-
ing wheel. Front-passenger front air bag 0044
deploys in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection for the occu-
pants in the front seats.
The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag (Y page 43).
The front-passenger front air bag will only
deploy if:
R the system, based on the OCS weight sensor
readings, detects that the front-passenger
seat is occupied (Y page 49). The
PASSENGER AIR BAG OFF indicator lamp is
not lit (Y page 50)
R the restraint system control unit predicts a
high accident severity
Driver's knee bag Driver's knee bag
0043deploys under the steering
column. The driver's knee bag is deployed
together with the front air bag.
The driver's knee bag offers additional thigh,
knee and lower leg protection for the occupant
in the driver's seat. 48
Occupant safetySafety

only parts which are relatively easily deformed
are affected and the rate of deceleration is not
high. Conversely, air bags may be deployed even
though the vehicle suffers only minor deforma-
tion. This is the case if, for example, very rigid
vehicle parts such as longitudinal body mem-
bers are hit, and sufficient deceleration occurs
as a result.
If the restraint system control unit detects a side impact or if the vehicle rolls over, the applicable
components of the restraint system are
deployed independently of each other depend-
ing on the apparent type of accident.
R Side impact air bags on the side where the
impact takes place, independently of the
Emergency Tensioning Device and the use of
the seat belt on the driver's seat and outer
seats in the second row
The side impact air bag on the front passenger side deploys under the following conditions:
- the OCS system detects that the front
passenger seat is occupied or
- the seat belt buckle tongue is engaged in
the belt buckle of the front passenger seat
R Window curtain air bag on the side of impact,
independently of the use of the seat belt and
independently of whether the front-
passenger seat is occupied
R Emergency Tensioning Devices, if the system
determines that deployment can offer addi-
tional protection in this situation
R Window curtain air bags on the driver's and
front-passenger side in certain situations
when the vehicle rolls over, if the system
determines that deployment can offer addi-
tional protection to that provided by the seat
belt
i Not all air bags are deployed in an accident.
The different air bag systems work independ- ently of each other.
How the air bag system works is determined
by the severity of the accident detected,
especially the vehicle deceleration or accel-
eration and the apparent type of accident:
R Head-on collision
R Side impact
R Rollover PRE-SAFE
®
(anticipatory occupant
protection system)
Introduction In certain hazardous situations, PRE-SAFE
®
takes pre-emptive measures to protect the vehi- cle occupants.
Important safety notes !
Make sure that there are no objects in the
footwell or behind the seats. There is a danger that the seats and/or objects could be dam-
aged when PRE-SAFE ®
is activated.
Although your vehicle is equipped with PRE-
SAFE ®
, the possibility of injury in the event of an
accident cannot be ruled out. 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.
Function PRE-SAFE
®
intervenes:
R in emergency braking situations, e.g. when
BAS is activated
R in critical driving situations, e.g. when physi-
cal limits are exceeded and the vehicle under-
steers or oversteers severely
R on vehicles with the Driving Assistance PLUS
package: when Active Brake Assist intervenes
powerfully or the radar sensor system detects an imminent danger of collision in certain sit- uations
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detected:
R the front seat belts are pre-tensioned.
R if the vehicle skids, the side windows and the
sliding sunroof are closed.
R vehicles with the memory function: the front-
passenger seat is adjusted if it is in an unfav-
orable position.
R vehicles with a multicontour seat: the air pres-
sure in the side bolsters of the seat backrest
is increased.
If the hazardous situation passes without result- ing in an accident, PRE-SAFE ®
slackens the belt
pre-tensioning. On vehicles with multicontour
seats, the air pressure in the side bolsters is
reduced again. All settings made by PRE-SAFE ®
can then be reversed. 56
Occupant safetySafety

If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back slightly
when the vehicle is stationary.
The seat belt pre-tensioning is reduced and
the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. Informa-
tion about the convenience function can be
found under "Belt adjustment" (Y page 46).PRE-SAFE
®
PLUS (anticipatory occu-
pant protection system PLUS)
Introduction PRE-SAFE
®
PLUS is only available in vehicles
with the Driving Assistance PLUS package.
Using the radar sensor system, PRE-SAFE ®
PLUS is able to detect that a head-on or rear-end
collision is imminent. In certain hazardous sit-
uations, PRE-SAFE ®
PLUS takes pre-emptive
measures to protect the vehicle occupants.
Important safety notes The intervention of PRE-SAFE
®
PLUS cannot
prevent an imminent collision.
The driver is not warned about the intervention
of PRE-SAFE ®
PLUS.
PRE-SAFE ®
PLUS does not intervene if the vehi-
cle is backing up.
When driving, or when parking or exiting a park-
ing space using Active Parking Assist, PRE-
SAFE ®
PLUS will not apply the brakes.
Function PRE-SAFE
®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision. PRE-SAFE
®
PLUS takes the following measures
depending on the hazardous situation detected:
R if the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned.
R if the radar sensor system detects that a rear-
end collision is imminent:
- the brake pressure is increased if the driver
applies the brakes when the vehicle is sta- tionary.
- the seat belts are pre-tensioned.
The PRE-SAFE ®
PLUS braking application is can-
celed:
R if the accelerator pedal is depressed when a
gear is engaged
R if the risk of a collision passes or is no longer
detected
R if Active Distance Assist DISTRONIC indicates
an intention to intervene
If the hazardous situation passes without result- ing in an accident, the original settings are
restored. Automatic measures after an acci-
dent
Immediately after an accident, the following
measures are implemented, depending on the
type and severity of the impact:
R the hazard warning lamps are switched on
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered
R vehicles with a memory function: the electri-
cally adjustable steering wheel is raised when
the driver's door is opened
R the engine is switched off and the fuel supply
is cut off
R vehicles with Mercedes me connect: auto-
matic emergency call Children in the vehicle
Important safety notes
Accident statistics show that children secured
in the rear seats are safer than children secured
in the front-passenger seat. For this reason,
Mercedes-Benz strongly advises that you install Children in the vehicle
57Safety Z

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 64). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of an accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
Braking X
Keep the brake pedal firmly depressed until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. Active Brake Assist
General information i
Observe the "Important safety notes" sec-
tion (Y page 64).
Active Brake Assist consists of a distance warn-
ing function with an autonomous braking func-
tion and situation-dependent braking assis-
tance.
Active Brake Assist can help you to minimize the risk of a collision with the vehicle traveling in
front or reduce the effects of such a collision.
If Active Brake Assist detects that there is a risk of collision, you will be warned visually and
acoustically. If you do not react to the visual and
audible collision warning, autonomous braking
can be initiated in critical situations. If you apply
the brake yourself in a critical situation, Active
Brake Assist supports you with situation-
dependent braking assistance. Active Brake Assist is only available in certain
countries.
Important safety notes In particular, the detection of obstacles can be
impaired if:
R there is dirt on the sensors or anything else
covering the sensors
R there is snow or heavy rain
R there is interference by other radar sources
R there are strong radar reflections, for exam-
ple in parking garages
R a narrow vehicle is traveling in front, e.g. a
motorbike
R a vehicle is traveling in front on a different line
R you are driving a new vehicle or servicing on
the Active Brake Assist system has just been
carried out
Observe the notes in the section on breaking-
in (Y page 126).
Following damage to the front end of the vehicle, have the configuration and operation of the
radar sensor 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.
Activating/deactivating Active Brake Assist is automatically active after
switching on the ignition.
You can activate or deactivate Active Brake
Assist (Y page 216) in the on-board computer.
When deactivated, the distance warning func-
tion and the autonomous braking function are
also deactivated.
If Active Brake Assist is deactivated, the 00D4
symbol appears in the assistance graphic dis-
play.
If DSR (Y page 167) is activated, Active Brake
Assist is deactivated.
Distance warning function General information
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. If the distance warning function
detects that there is a risk of a collision, you will
be warned visually and acoustically. Driving safety systems
65Safety Z