2017 MERCEDES-BENZ GLA-Class ABS

Chassis with adaptive adjustable
damping
General notes
Suspension with the Adaptive Damping Sys-
tem provides improved driving comfort and
continuously controls the calibration of the
dampers. The damping characteristics adapt
to the current operating and driving situation.
The damping is tuned individually to each
wheel and depends on:
Ryour driving style, e.g. sporty
Rthe road surface conditions
Rthe drive program selected
Rthe vehicle level setting
The drive program can be set using the
DYNAMIC SELECT button (
Ypage 157).
Selecting Comfort mode
In the Comfort drive program, the driving
characteristics of your vehicle are more com-
fortable. Therefore, select this mode if you
favor a more comfortable driving style. Also
select the Comfortdrive program when driv-
ing fast on straight roads, e.g. on straight
stretches of highway.
XPress DYNAMIC SELECT button :
(
Ypage 157) as many times as necessary
until the Comfort drive program is selec-
ted.
Selecting Sport mode
The firmer setting of the suspension tuning in
the Sport drive program ensures even better
contact with the road. Select this drive pro- gram when employing a sporty driving style,
e.g. on winding country roads.
DSR is not available in the
Sportdrive pro-
gram. For further information on DSR, see
(
Ypage 197).
XPress DYNAMIC SELECT button :
(
Ypage 157) as many times as necessary
until the Sportdrive program is selected.
Selecting Off-road mode
iThe Off-road program is only available on
vehicles with the Off-road package.
The engine’s performance characteristics
and the gearshifting characteristics of the
automatic transmission are adapted for the
Off-road drive program. ABS, ESP
®and ETS
programs especially adapted to off-road driv-
ing are also activated. Select this drive pro-
gram when driving in easily negotiable off-
road terrain, e. g. dirt tracks.
Do not use the off-road program on roads that
are snow-covered or icy or if you have moun- ted snow chains on your vehicle.
XPress DYNAMIC SELECT button :
(
Ypage 157) as many times as necessary
until the Off-road drive program is selec-
ted.
Status icon :of the off-road program is
shown in the multifunction display.
Driving systems199
Driving and parking
Z

The sensors may not detect snow and other
objects that absorb ultrasonic waves.
Ultrasonic sources such as an automatic
car wash, the compressed-air brakes on a
truck or a pneumatic drill could cause
PARKTRONIC to malfunction.
PARKTRONIC may not function correctly on
uneven terrain.
PARKTRONIC is activated automatically when
you:
Rswitch on the ignition
Rshift the transmission to position D,Ror N
Rrelease the electric parking brake
Range of the sensors
General notes
PARKTRONIC does not take objects into con-
sideration that are:
Rbelow the detection range, e.g. people, ani-
mals or objects.
Rabove the detection range, e.g. overhang-
ing loads, truck overhangs or loading
ramps.
:Sensors in the front bumper, left-hand
side (example)
The sensors must be free from dirt, ice or
slush. They can otherwise not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them
(
Ypage 317). Range
Front sensors
CenterApprox. 40 in (approx.
100 cm)
CornersApprox. 24 in (approx.
60 cm)
Rear sensors
CenterApprox. 48 in (approx.
120 cm)
CornersApprox. 32 in (approx.
80 cm)
Minimum distance
CenterApprox. 8 in (approx.
20 cm)
CornersApprox. 6 in (approx.
15 cm)
If there is an obstacle within this range, the
relevant warning displays light up and a warn-
ing tone sounds. If the distance falls below
the minimum, the distance may no longer be
shown.
Driving systems201
Driving and parking
Z

Rthe lane markings are worn away, dark or
covered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too
small and the lane markings thus cannot be
detected
Rthe lane markings change quickly, e.g.
lanes branch off, cross one another or
merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the road
Switching on Lane Keeping Assist
XActivate Lane Keeping Assist using the on-
board computer; to do so, select Standard
orAdaptive(Ypage 228).
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected, the lines in the assistance graphics display
(
Ypage 227) are shown in green. Lane
Keeping Assist is ready for use.
When Standard
is selected, no warning vibra-
tion occurs if:
Ryou have switched on the turn signal. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
When Adaptive
is selected, no warning vibra-
tion occurs if:
Ryou have switched on the turn signal. In this
event, the warnings are suppressed for a
certain period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when nec-
essary and in good time if you cross the lane
marking, the system recognizes certain con-
ditions and warns you accordingly. The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a free-
way.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes.
Ryou cut the corner on a bend.
216Driving system s
Driving an d parking

Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavail‐
able See Opera‐
tor's Manual
ABS (Anti-lock Braking System), BAS (Brake Assist), ESP®(Elec-
tronic Stability Program), the HOLD function and hill start assist
are temporarily unavailable.
COLLISION PREVENTION ASSIST PLUS may also have failed.
In addition, the !,÷andå warning lamps may light up
in the instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes are:
RSelf-diagnosis is not yet complete.
RThe on-board voltage may be insufficient.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive a short distance on a suitable stretch of road,
making slight steering movements at a speed above 12 mph
(20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
!÷
Inoperative See
Operator's Manual
ABS, BAS, ESP®, the HOLD function and hill start assist are not
available due to a malfunction.
COLLISION PREVENTION ASSIST PLUS may also have failed.
The !, ÷,åand$ (USA only) or J(Canada only)
warning lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
236Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
÷
Inoperative See
Operator'sManual
ES P®,BAS, th eHOLD function and hill start assist are unavailable
due to amalfunction .
COLLISION PREVENTION ASSIST PLU Smay also hav efailed.
In addition ,th e÷ andå warnin glamp smay ligh tup in th e
instrumen tcluster.
ATTENTION ASSIST is deactivated.
GWARNIN G
The brakesystem continues to function normally, but without th e
function slisted above.
The brakin gdistanc ein an emergenc ybrakin gsituation can thus
increase .
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increase dris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
T!
÷
Inoperative See
Operator' sManual
EB D(electronic brak eforc edistribution), ABS, BAS, ES P®,th e
HOLD function and hill start assist are no tavailable due to amal-
function .
COLLISION PREVENTION ASSIST PLU Smay also hav efailed.
A warnin gtone sounds.
In addition ,th e÷, åand! warnin glamp smay ligh tup
in th einstrumen tcluster.
GWARNIN G
The brakesystem continues to function normally, but without th e
function slisted above. The fron tand rear wheels could therefore
loc kif you brak ehard, fo rexample.
The steerabilit yand brakin gcharacteristics may be severely affec -
ted. The brakin gdistanc ein an emergenc ybrakin gsituation can
increase .
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increase dris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
238Display messages
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS (Anti-lock Braking System) is deactivated due to a malfunc-
tion. Therefore, BAS (Brake Assist), COLLISION PREVENTION
ASSIST PLUS, ESP
®(Electronic Stability Program), the HOLD func-
tion and hill start assist are also deactivated, for example.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic trans-
mission, will not be available.
Warning and indicator lamps in the instrument cluster269
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running.ABS is temporarily unavailable. Therefore, BAS, COLLISION PRE-
VENTION ASSIST PLUS, ESP®, EBD (electronic brake force distri-
bution), the HOLD function and hill start assist are also deactiva-
ted, for example.
Possible causes are:
RSelf-diagnosis is not yet complete.
RThe on-board voltage may be insufficient.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering move-
ments at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
270Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andMSolutions
!
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.EBD is malfunctioning. Therefore, ABS, BAS, COLLISION PREVEN-
TION ASSIST PLUS, ESP®, the HOLD function and hill start assist
for example, are also not available.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
$ (USA only)
J (Canada only)
!֌
The red brake system
warning lamp and the
yellow ABS, ESP
®and
ESP®OFF warning
lamps are lit while the
drive system is running.
ABS and ESP®are malfunctioning. Therefore, BAS, COLLISION
PREVENTION ASSIST PLUS, EBD, the HOLD function and hill start
assist for example, are also not available.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
Warning and indicator lamps in the instrument cluster271
On-board computer and displays
Z