brakes MERCEDES-BENZ GLE COUPE 2019 Owner's Manual

Engaging reverse gear ................... 135
Engaging the park position ............ 135
Important safety note
s.................. 135
Kickdown ....................................... 138
Manual shifting .............................. 139
Oil temperature (on-board com-
puter, Mercedes-AMG vehicles) ..... 220
Overview ........................................ 135
Problem (malfunction) ................... 141
Pulling away ................................... 130
Starting the engine ........................ 129
Steering wheel paddle shifters ...... 139
Trailer towing ................................. 138
Transmission position display ........ 136
Transmission positions .................. 137
Automatic transmission emer-
gency mode ....................................... 141
AUX jacks
CD/DVD drive ............................... 271
Axle load, permissible (trailer tow-
ing) ...................................................... 367 B
Back button ....................................... 265
Bag hook ............................................ 277
Ball coupling
Installing ........................................ 201
Removing ....................................... 205
BAS (Brake Assist System) ................. 65
Battery (SmartKey)
Checking .......................................... 77
Important safety notes .................... 77
Replacing ......................................... 77
Battery (vehicle)
Charging ........................................ 317
Display message ............................ 237
Important safety notes .................. 315
Jump starting ................................. 318
Overview ........................................ 315
Replacing ....................................... 317
Belt warning ......................................... 46
Bicycle rack ....................................... 205
Blind Spot Assist
Activating/deactivating ................. 217
Display message ............................ 241
Notes/function .............................. 191
Trailer towing ................................. 193 see Active Blind Spot Assist
Bluetooth ®
Searching for a mobile phone ........ 268
Searching for a mobile phone
(device manager) ........................... 269
see also Digital Operator's Man-
ual .................................................. 264
Telephony ...................................... 268
Brake Assist System
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 229
Notes ............................................. 362
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 235
Brake linings
Display message ............................ 229
Brakes
ABS .................................................. 64
BAS .................................................. 65
Brake fluid (notes) ......................... 362
Braking assistance appropriate to
the situation ..................................... 66
Display message ............................ 224
Hill start assist ............................... 130
Important safety notes .................. 149
Maintenance .................................. 150
Parking brake ................................ 145
Riding tips ...................................... 149
Warning lamp ................................. 253
Braking assistance appropriate to
the situation
Function/note s................................ 66
Breakdown assistance
Where will I find...? ........................ 309
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 36 C
California Important notice for retail cus-
tomers and lessees .......................... 27 6
Index

Brakes ........................................... 149
Break-in period .............................. 126
Downhill gradient ........................... 149
Drinking and driving ....................... 147
Driving in winter ............................. 151
Driving on flooded roads ................ 151
Driving on sand .............................. 154
Driving on wet roads ...................... 150
Driving over obstacles ................... 154
Exhaust check ............................... 147
Fuel ................................................ 147
General .......................................... 147
Hydroplaning ................................. 150
Icy road surfaces ........................... 151
Limited braking efficiency on sal-
ted roads ....................................... 150
Off-road driving .............................. 153
Off-road fording ............................. 151
Snow chains .................................. 329
The first 1000 miles (1500 km) ..... 126
Tire ruts ........................................ .154
Towing a trailer .............................. 200
Traveling uphill ............................... 155
Wet road surface ........................... 150
DSR (Downhill Speed Regulation)
Display message ............................ 240
Function/notes ............................ .167
DVD video
Operating (on-board computer) ..... 214
see also Digital Operator's Man-
ual ................................................. .264
DYNAMIC SELECT controller
Automatic transmission ................. 134 E
EASY-ENTRY feature Activating/deactivating ................. 219
Function/notes ............................ .101
EASY-EXIT feature
Crash-responsive ........................... 101
Function/notes ............................ .101
Switching on/off ........................... 219
EASY-PACK cargo compartment
management system ........................ 278
EBD (electronic brake force distri-
bution)
Display message ............................ 226 Function/notes ................................ 69
ECO display
Function/notes ............................ .148
On-board computer ....................... 212
ECO start/stop function
Automatic engine start .................. 132
Automatic engine switch-off .......... 131
Deactivating/activating ................. 132
General information ....................... 131
Important safety notes .................. 131
Introduction ................................... 131
Electronic Stability Program
see ESP ®
(Electronic Stability Program)
Emergency
Automatic measures after an acci-
dent ................................................. 57
Emergency release
Driver's door ................................... .81
Vehicle .............................................81
Emergency spare wheel
General note s ................................ 353
Im portant safety notes .................. 353
Removing .......................................3 54
Storage location ............................ 354
Stowing .......................................... 354
Emergency Tensioning Devices
Activation ......................................... 54
Emergency unlocking
Tailgate ............................................ 85
Emissions control
Service and warranty information .... 27
Engine
Check Engine warning lamp ........... 259
Display message ............................ 236
ECO start/stop function ................ 131
Engine number ............................... 359
Irregular running ............................ 133
Jump-starting ................................. 318
Starting (important safety notes) ... 128
Starting problems .......................... 133
Starting the engine with the
SmartKey ....................................... 129
Starting via smartphone ................ 129
Starting with KEYLESS-GO ............. 129
Switching off .................................. 144
Tow-starting (vehicle) ..................... 324
Engine electronics
Problem (malfunction) ................... 133 10
Index

Transporting ..................................3
23
Unlocking (in an emergency) ........... 81
Unlocking (SmartKey) ..................... .74
Vehicle data ................................... 364
Vehicle data
Roof load (maximum) .....................3 64
Trunk load (maximum) ................... 364
Vehicle data (off-road driving)
Approach/departure angle ............ 366
Maximum gradient climbing abil-
ity ................................................. .367
Maximum water depth ................... 366
Vehicle dimensions ........................... 364
Vehicle emergency locking ................ 81
Vehicle identification number
see VIN
Vehicle identification plate .............. 358
Vehicle level
AIRMATIC ...................................... 170
Vehicle level (display message) ....... 239
Vehicle tool kit .................................. 310
Video
Operating the DVD ......................... 214
see also Digital Operator's Man-
ual ................................................. .264
VIN ...................................................... 358
Seat ............................................... 359
Type plate ...................................... 358 W
Warning and indicator lamps ABS ................................................ 254
Brakes .......................................... .253
Coolant .......................................... 260
Distance warning ........................... 262
Engine diagnostics ......................... 259
ESP ®
.............................................. 256
ESP ®
OFF ....................................... 257
Fuel tank ........................................ 259
Overview .......................................... 36
Parking brake ................................ 259
PASSENGER AIR BAG ..................... .43
Reserve fuel .................................. .259
Restraint system ............................ 259
Seat belt ........................................ 251
Tire pressure monitor .................... 263
Warranty .............................................. 27 Washer fluid
Display message ............................ 249
Weather display (COMAND)
see also Digital Operator's Man-
ual.................................................. 264
Wheel and tire combinations
Tires ............................................... 352
Wheel bolt tightening torque ........... 351
Wheel chock ...................................... 349
Wheels
Changing a whee l.......................... 347
Checking ........................................ 327
Cleaning ......................................... 304
Emergency spare wheel ................. 353
Important safety notes .................. 327
Information on driving .................... 327
Interchanging/changing ................ 347
Mounting a new whee l................... 351
Mounting a whee l.......................... 348
Overview ........................................ 327
Removing a whee l.......................... 350
Snow chains .................................. 329
Storing ........................................... 348
Tightening torque ........................... 351
Wheel size/tire size ....................... 352
Window curtain air bag
Display message ............................ 232
Operation ......................................... 49
Windows
see Side windows
Windshield
Defrosting ...................................... 122
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 299
Important safety notes .................. 363
Windshield wipers
Problem (malfunction) ................... 114
Replacing the wiper blades ............ 111
Replacing the wiper blades
(MAGIC VISION CONTROL) ............ 113
Switching on/of f........................... 111
Winter driving
Slippery road surfaces ................... 151
Winter operation
Overview ........................................ 329
Radiator cover ............................... 297 Index
23

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

Instrument cluster
Function Page
0043
Speedometer with segments 208
Warning and indicator lamps:
00BB
ESP®
OFF 256
0025
ABS 254
Brakes 253
0027
(USA only) 004D
(Canada only) 0058
Low-beam headlamps 107
0060
Parking lamps 107
00E5
ESP® 256
0057
High-beam headlamps 107
Electric parking brake (red) 259
0049
(USA only) 0024
(Canada only) 0024
Electric parking brake
(yellow) 259
00BA
Distance warning 262
0044
003E003D
Turn signals 107 Function Page
0087
Multifunction display 210
0085
Tachometer 208
Warning and indicator lamps:
005E
Rear fog lamp 107
00B9
Check Engine 259
0077
Tire pressure monitor 263
0075
Restraint system 43
00E9
Seat belts 251
0083
Coolant temperature gauge 209
Warning and indicator lamps:
00AC
Coolant 260
0084
Fuel level indicator
Warning and indicator lamps:
00B6
Reserve fuel with fuel
filler flap location indicator
(right-hand side) 259
006B
Instrument cluster lighting 208
i
Information on displaying the outside tem-
perature in the multifunction display can be found under "Outside temperature display"
(Y
page 208). 36
Instrument clusterAt a glance

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

Driving safety systems
Overview of driving safety systems
In this section, you will find information about
the following driving safety systems:
R ABS (Anti-lock BrakingSystem)
(Y page 64)
R BAS (Brake AssistSystem) (Y page 65)
R Active Brake Assist (Y page 65)
R ESP ®
(E lectronic StabilityProgram)
(Y page 68)
R EBD (Electronic Brake forceDistribution)
(Y page 69)
R ADAPTIVE BRAKE (Y page 70)
R Active Brake Assist with cross-traffic function
(Y page 70)
R Active Steering Assist STEER CONTROL
(Y page 72) 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 327).
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 0025 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 64). 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 254) and dis-
play messages which may be shown in the
instrument cluster (Y page 224).
Brakes 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. 64
Driving safety systemsSafety

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

Important safety notes
i Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 64).G
WARNING
The distance warning function does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
The distance warning function may not give
warnings 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.
Always adapt your speed to suit the prevailing
road and traffic conditions. G
WARNING
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
R give an unnecessary warning
R not 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.
Function 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.
X Brake immediately in order to increase the
distance from the vehicle in front.
or X Take 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. 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.
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.
Autonomous braking function If the driver does not react to the distance warn-
ing signal in a critical situation, Active Brake
Assist can assist the driver with the autonomous braking function.
Vehicles without Active Distance Assist
DISTRONIC: the autonomous braking function
is available in the following speed ranges:
R 4 - 65 mph (7 - 105 km/ h)for moving objects
R 4 - 31 mph (7 - 50 km/h) for stationary
objects
Vehicles with Active Distance Assist
DISTRONIC: the autonomous braking function
is available in the following speed ranges:
R 4 - 124 mph (7 - 200 km/h) for moving
objects
R 4 - 31 mph (7 - 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 (Y page 56).
Situation-dependent braking assis-
tance General information
i Observe the "Important safety notes" sec-
tion (Y page 64).
With the help of the radar sensor system, Active
Brake Assist can detect obstacles that are in the path of your vehicle for an extended period of
time.
If Active Brake Assist detects a risk of collision
with the vehicle in front, it calculates the brake
pressure necessary to avoid a collision. If you
apply the brakes forcefully, situation-dependent 66
Driving safety systemsSafety

braking assistance adapts to the situation and
automatically increases the brake pressure to a degree appropriate to the traffic situation.
Situation-dependent braking assistance pro-
vides braking assistance in hazardous situations at speeds above 4 mph (7 km/h). It uses radar
sensor technology to assess the traffic situa-
tion.
Situation-dependent braking assistance is capa-
ble of reacting to moving objects that have
already been detected as such at least once
over the period of observation, up to vehicle
speeds of around 155 mph (250 km/ h).
Situation-dependent braking assistance reacts
to stationary obstacles up to a speed of approx-
imately 44 mph (70 km/h).
If situation-dependent braking assistance
demands particularly high brake pressure, pre-
ventative passenger protection measures (PRE-
SAFE ®
) are triggered simultaneously
(Y page 56).
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if: R you release the brake pedal
R there is no longer any danger of a collision
R no obstacle is detected in front of your vehi-
cle.
Situation-dependent braking assistance is then
deactivated.
Important safety notes i Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 64).G
WARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist might:
R intervene unnecessarily
R not 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. G
WARNING
Adaptive Brake Assist does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, complex but
non-critical driving conditions may also cause
Active Brake Assist to intervene.
Even if Active Brake Assist is not available due to a malfunction in the radar sensor system, the
brake system is still available with full brake
boosting effect and BAS. ESP
®
(Electronic Stability Program)
General notes i
Observe the "Important safety notes" sec-
tion (Y page 64).
ESP ®
monitors driving stability and traction, i.e.
power transmission between the tires and the
road surface.
If ESP ®
detects that the vehicle is deviating from
the direction desired by the driver, one or more
wheels are braked to stabilize the vehicle. The
engine output is also modified to keep the vehi- cle on the desired course within physical limits.
ESP ®
assists the driver when pulling away on
wet or slippery roads. ESP ®
can also stabilize
the vehicle during braking.
4ETS (Electronic Traction System) 4ETS traction control is part of ESP
®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
. Driving safety systems
67Safety Z