light MERCEDES-BENZ GLE 2019 Owner's Guide

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 66)
R BAS (Brake AssistSystem) (Y page 67)
R Active Brake Assist (Y page 67)
R ESP ®
(E lectronic StabilityProgram)
(Y page 70)
R EBD (Electronic Brake forceDistribution)
(Y page 72)
R ADAPTIVE BRAKE (Y page 72)
R Active Brake Assist with cross-traffic function
(Y page 72)
R Active Steering Assist STEER CONTROL
(Y page 75) Important safety notes
If you fail to adapt your driving style or if you are
inattentive, the driving safety systems can nei-
ther reduce the risk of an accident nor override the laws of physics. Driving safety systems are
merely aids designed to assist driving. You are
responsible for maintaining the distance to the
vehicle in front, for vehicle speed, for braking in
good time, and for staying in lane. Always adapt your driving style to suit the prevailing road and
weather conditions and maintain a safe distance from the vehicle in front. Drive carefully.
The driving safety systems described only work
as effectively as possible when there is ade-
quate contact between the tires and the road
surface. Pay particular attention to the informa- tion regarding tires, recommended minimum
tire tread depths etc. in the "Wheels and tires"
section (Y page 351).
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 66). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid- ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
When ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp (Y page 277) and dis-
play messages which may be shown in the
instrument cluster (Y page 245).
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. 66
Driving safety systemsSafety

Activating/deactivating
Active Brake Assist is automatically active after
switching on the ignition.
You can activate or deactivate Active Brake
Assist (Y page 238) 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 214) 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.
Important safety notesi Observe the "Important safety notes" sec-
tion for driving safety systems (Y page 66).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 around 4 mph (7 km/h),
the distance warning function warns you if you
rapidly approach a vehicle in front. An intermit-
tent warning tone will then sound, and the 00BA
distance warning lamp will light up in the instru-
ment 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 around 44 mph (70 km/h), the
distance warning function can also react to sta-
tionary obstacles, such as stopped 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 68
Driving safety systemsSafety

If ESP
®
intervenes:
X Do not deactivate ESP ®
under any circum-
stances.
X Only depress the accelerator pedal as far as
necessary when pulling away.
X Adapt your driving style to suit the prevailing
road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle stops moving. The engine starts automatically when
the driver wants to pull away again. ESP ®
remains in its previously selected status, e.g. if
ESP ®
was deactivated before the engine was
automatically switched off.
Deactivating/activating ESP ®Important safety notes
i Observe the "Important safety notes" sec-
tion (Y page 66).
You can select between the following states of
ESP ®
:
R ESP ®
is activated.
R ESP ®
is deactivated. G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the follow-
ing situations:
R when using snow chains
R in deep snow
R on sand or gravel
Spinning the wheels results in a cutting action
which provides better grip.
i Activate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilize the vehicle if
the vehicle starts to skid or a wheel starts to
spin. !
Avoid spinning the driven wheels for an
extended period with ESP ®
deactivated. You
could otherwise damage the drivetrain.
Deactivating/activating ESP ® X
To deactivate: press button0043.
The 00BB ESP®
OFF warning lamp in the
instrument cluster lights up.
X To activate: press button 0043.
The 00BB ESP®
OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP ®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the 00E5ESP®
warning lamp in the
instrument cluster flashes. In such situations,
ESP ®
will not stabilize the vehicle.
If you deactivate ESP ®
:
R ESP ®
no longer improves driving stability.
R Engine torque is no longer limited and the
drive wheels are able to spin.
R Traction control is still activated.
R Active Brake Assist is no longer available; nor
is it activated if you brake firmly with assis-
tance from ESP ®
R PRE-SAFE ®
is no longer available, nor is it
activated if you brake firmly and ESP ®
inter-
venes.
R Active Brake Assist with cross-traffic function
is no longer available; nor is it activated if you
brake firmly with assistance from ESP ®
R ESP ®
still provides support when you brake
firmly. Driving safety systems
71Safety Z

R
a vehicle is traveling in front on a different line
relative to the center of your vehicle
R vehicles quickly move into the radar sensor
system detection range
Recognition by the camera system is also
impaired in the event of:
R dirt on the camera or if the camera is covered
R glare on the camera system, e.g. from the sun
being low in the sky
R darkness
R or 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 thefront of the vehicle.
Following damage to the windshield, have the
configuration and operation of the camera sys-
tem checked at a qualified specialist workshop.
Function X
To activate or deactivate: activate or deac-
tivate Active Brake Assist with cross-traffic
function using the on-board computer
(Y page 238).
If the Active Brake Assist with cross-traffic
function is deactivated, the 00D4symbol
appears in the multifunction display.
If you have activated DSR (Y page 214), the
Active Brake Assist with cross-traffic function is
deactivated.
Starting at a speed of around 4 mph (7 km/h),
this function warns you if you rapidly approach a
vehicle in front. An intermittent warning tone
will then sound and the 00BAdistance warning
lamp will light up in the instrument cluster.
X Brake immediately to defuse the situation.
or
X Take evasive action provided it is safe to do
so. Active Brake Assist with cross-traffic function
can also brake the vehicle automatically under
the following conditions:
R the driver and front-passenger have their seat
belts fastened
and
R the vehicle speed is between approximately
4 mph (7 km/h) and 124 mph (200 km/h)
Up to a speed of approximately 44 mph
(70 km/h), Active Brake Assist with cross-traffic function may react to:
R stationary objects in the path of your vehicle,
e.g. stopped or parked vehicles
R pedestrians in the path of your vehicle
i If there is an increased risk of a collision,
preventive passenger protection measures
(PRE-SAFE ®
) are triggered (Y page 58).
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking, up
to the point of full brake application. Automatic emergency braking is not performed until imme-
diately prior to an imminent accident.
If you apply the brake yourself in a critical sit-
uation or during autonomous braking, braking
assistance is provided according to the situa-
tion. If necessary, this increases the brake pres- sure up to full brake application.
To avoid a collision, Active Brake Assist with
cross-traffic function calculates the brake force
necessary if:
R you approach an obstacle, and
R Active Brake Assist with cross-traffic function
has detected a risk of a collision
When driving at a speed under 20 mph
(30 km/h): if you depress the brake pedal,
Active Brake Assist with cross-traffic function is
activated. The increase in brake pressure from
Active Brake Assist with cross-traffic function is
carried out at the last possible moment.
When driving at a speed above 20 mph
(30 km/h) : if you depress the brake pedal
sharply, Active Brake Assist with cross-traffic
function automatically increases the brake pres- sure to a degree suited to the traffic situation.
Active Brake Assist with cross-traffic function
provides braking assistance in hazardous situa-
tions with vehicles in front within a speed range
between 4 mph (7 km/h) and 155 mph
(250 km/h). 74
Driving safety systemsSafety

If activated in the multimedia system, the loca-
tor lighting also lights up in the dark (see the
Digital Operator's Manual).
X To open the tailgate automatically from
outside the vehicle:
press and hold the0054
button until the tailgate opens.
Vehicles with KEYLESS-GO: X To close the tailgate automatically from
outside the vehicle:
if the SmartKey is loca-
ted in the immediate vicinity of the vehicle,
press the 0054button on the SmartKey.
When the tailgate closes you can then release
the button. KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY-
LESS-GO key in the vehicle (Y page 137).
Locking/unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the
SmartKey with you. You can combine the func-
tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the 0037 button on the SmartKey.
The driver's door and the door at which the han- dle is used, must both be closed. The SmartKey
must be outside the vehicle. When locking or
unlocking with KEYLESS-GO, the distance
between the SmartKey and the corresponding
door handle must not be greater than 3 ft (1 m).
KEYLESS-GO checks whether a valid SmartKey
is in the vehicle by periodically establishing a
radio connection between the vehicle and the
SmartKey. This happens:
R when starting the engine
R while driving
R when the external door handles are touched
R during convenience closing X
To unlock the vehicle: touch the inner sur-
face of the door handle.
X To lock the vehicle: touch sensor surface 0043
or 0044.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface 0044for an extended
period.
Further information on the convenience closing
feature (Y page 90).
If you pull on the handle of the tailgate, only the cargo compartment of the vehicle is unlocked.
Deactivating and activating If you do not intend to use a SmartKey for an
extended period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power, thereby conserving battery power. For the purposes of
activation/deactivation, the vehicle must not be
nearby.
X To deactivate: press the0037button on the
SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
flashes twice briefly and lights up once, KEY-
LESS-GO is deactivated (Y page 80).
X To activate: press any button on the Smart-
Key.
or X Insert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features are available again. 78
SmartKeyOpening and closing

SmartKey battery
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately. H
Environmental note Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and recycled to protect the
environment. Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm.
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work- shop. Checking the battery X
Press the 0037or0036 button.
The battery is working properly if battery
check lamp 0043lights up briefly.
The battery is discharged if battery check
lamp 0043does not light up briefly.
X Change the battery (Y page 80).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the 0037 or0036 button:
R locks or
R unlocks the vehicle
i You can get a battery at any qualified spe-
cialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery.
X Take the mechanical key out of the SmartKey
(Y page 79). X
Press mechanical key 0044into the SmartKey
opening in the direction of the arrow until bat- tery compartment cover 0043opens. Do not
hold battery compartment cover 0043closed
while doing so.
X Remove battery compartment cover 0043.80
SmartKeyOpening and closing

Problem
Possible causes/consequences and
0050
0050Solutions There is interference from a powerful source of radio waves.
X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key. KEYLESS-GO is malfunctioning.
X Lock/unlock the vehicle using the remote control function of the
SmartKey.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
X Unlock (Y page 84) or lock (Y page 84) the vehicle using the
mechanical key.
X Have the vehicle and SmartKey checked at a qualified specialist
workshop. The engine cannot be
started using the Smart-
Key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 342).
or X Jump-start the vehicle (Y page 343).
or X Consult a qualified specialist workshop. The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. The SmartKey battery is discharged or nearly discharged.
X Check the SmartKey battery (Y page 80) and replace it if necessary
(Y page 80).
If this does not work: X Start your vehicle with the SmartKey in the ignition lock. There is interference from a powerful source of radio waves.
X Start your vehicle with the SmartKey in the ignition lock. You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. 82
SmartKeyOpening and closing

Automatic locking feature
X
To deactivate: press and hold button 0043for
about five seconds until a tone sounds.
X To activate: press and hold button 0044for
about five seconds until a tone sounds.
If you press one of the two buttons and do not
hear a tone, the relevant setting has already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing.
You could therefore be locked out if:
R the vehicle is being pushed.
R the vehicle is being towed.
R the vehicle is on a roller dynamometer.
You can also switch the automatic locking func-
tion on and off using the on-board computer
(Y page 240). Power closing
Power closing pulls the doors and tailgate into
their locks automatically even if they are not
completely closed.
X To power close a door: push the door into
the lock up to the first detent position.
Power closing will pull the door fully closed.
X To power close the tailgate: lightly press
the tailgate downwards.
Power closing will pull the tailgate fully
closed. Unlocking/locking the driver's door
using the mechanical key
i If you want to centrally lock the vehicle using
the mechanical key, begin by pressing the
locking button for the interior locking mech-
anism while the driver's door is open. Then
proceed to lock the driver's door using the
mechanical key. X
Insert the mechanical key into the lock of the
driver's door as far as it will go.
X To unlock: turn the mechanical key counter-
clockwise to position 0047.
X To lock: turn the mechanical key clockwise as
far as it will go to position 0047.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys- tem will be triggered. Switch off the alarm
(Y page 75).
If you lock the vehicle as described above, the
fuel filler flap is not locked. The anti-theft alarm
system is not armed. Cargo compartment
Important safety notes
G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open. 84
Cargo compartmentOpening and closing

G
WARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
! The tailgate swings upwards and to the rear
when opened. Therefore, make sure that
there is sufficient clearance above and behind
the tailgate.
The opening dimensions of the tailgate can be
found in the "Vehicle data" section
(Y page 390).
You should preferably place luggage or loads in the cargo compartment. Observe the loading
guidelines (Y page 295).
Do not leave the SmartKey in the cargo com-
partment. You could otherwise lock yourself
out.
Vehicles without the EASY-PACK tailgate:
the tailgate can be:
R opened and closed manually from outside
R unlocked from inside with the emergency
release
For vehicles with the EASY-PACK tailgate:
you can:
R close the tailgate manually from outside
R open the tailgate automatically from outside
R open and close the tailgate automatically
from inside
R unlock the tailgate from inside with the emer-
gency release
R limit the opening angle of the tailgate Tailgate reversing feature
On vehicles with the tailgate remote closing fea- ture, the tailgate is equipped with automatic
obstacle recognition with a reversing feature. If a solid object blocks or restricts the tailgate
when automatically opening or closing, this pro-
cedure is stopped. If the tailgate is stopped dur- ing the closing procedure, it will open again automatically. The automatic obstacle recogni-
tion with reversing feature is only an aid. It is not
a substitute for your attentiveness when open-
ing and closing the tailgate. G
WARNING
The reversing feature does not respond:
R to soft, light and thin objects, e.g. fingers
R over the last 00C2in (8 mm) of the closing
movement
The reversing feature cannot prevent some-
one from becoming trapped in these situa-
tions in particular. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
R press the 0054button on the SmartKey, or
R pull or press the remote operating switch
on the driver's door or
R press the closing or locking button on the
tailgate or
R pull the handle on the tailgate Opening and closing manually from
outside
Opening X
Press the 0036button on the SmartKey.
X Pull handle 0043.
X Raise the tailgate.
Vehicles with the EASY-PACK tailgate: if you
pull handle 0043and then release it, the tailgate
opens automatically. Cargo compartment
85Opening and closing Z

G
WARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle. Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts a side window during the closing
process, the side window opens again automat-
ically. However, the automatic reversing feature is only an aid and does not relieve you of the
responsibility of paying attention when closing a side window. G
WARNING
The reversing feature does not react:
R to soft, light and thin objects, e.g. small fin-
gers
R over the last 1/6 in(4 mm) of the closing
movement
R during resetting
R when closing the side window again man-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch to open the side window again. Opening and closing the side win-
dows
The switches for all side windows are located on
the driver's door. There is also a switch on each door for the corresponding side window.
The switches on the driver's door take prece-
dence. 0043
Front left
0044 Front right
0087 Rear right
0085 Rear left
X Turn the SmartKey to position 0047or0048 in the
ignition lock.
X To open manually: press and hold the cor-
responding switch.
X To open fully: press the switch beyond the
pressure point and release it.
Automatic operation is started.
X To close manually: pull the corresponding
switch and hold it.
X To close fully: pull the switch beyond the
pressure point and release it.
Automatic operation is started.
X To interrupt automatic operation: press/
pull the corresponding switch again.
If you press the switch beyond the pressure
point and release, automatic operation is star-
ted in the corresponding direction. You can stop automatic operation by pressing/pulling the
switch again.
You can continue to operate the side windows
after you switch off the engine or remove the
SmartKey. This function is available for up to five
minutes or until the driver's or front-passenger
door is opened.
The side windows cannot be operated from the
rear when the override feature for the side win- dows is activated (Y page 65). Convenience opening
General notes Vehicles with KEYLESS-GO or KEYLESS-GO
start function:
you can ventilate the vehicle
before you start driving. Side windows
89Opening and closing Z