2017 MERCEDES-BENZ GLA SUV air suspension

If the restraint system control unit detects a side
impact, the applicable components of the
restraint system are activated independently of each other.
On vehicles with off-road comfort suspension, a
side impact or vehicle overturn can be detected. The applicable components of the restraint sys-
tem are activated independently of each other
depending on the apparent type of accident.
R Sidebags on the side on which an impact
occurs, independently of the seat belt ten-
sioner and seat belt usage
Vehicles with the automatic front-passenger
front airbag deactivation system: the sidebag on the front-passenger side deploys under the
following conditions:
- an occupant is detected in the front-
passenger seat or
- the seat belt buckle tongue is engaged in
the belt buckle of the front-passenger seat
R Windowbag on the side on which an impact
occurs, independently of seat belt usage and
regardless of whether the front-passenger
seat is occupied
R Seat belt tensioners, if the system determines
that deployment can offer additional protec-
tion for the vehicle occupants in this situation
R Vehicles with off-road comfort suspension:
windowbags on the driver's and front-
passenger side in certain situations if the
vehicle overturns and if the system deter-
mines that deployment can offer additional
protection to that provided by the seat belt
i Not all airbags are deployed in an accident.
The different airbag systems work independ-
ently of each other.
How the airbag 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 frontal collision
R side impact
R vehicles with off-road comfort suspension:
overturn PRE-SAFE
®
(anticipatory occupant
protection)
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 risk
that the seats and/or the objects could be
damaged 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 when Active Brake Assist intervenes power-
fully
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
panorama sliding sunroof are closed
R vehicles with the memory function: the front-
passenger seat is adjusted if it is in an unfav-
ourable position
If the hazardous situation passes without result- ing in an accident, PRE-SAFE ®
slackens the belt
pre-tensioning. All settings made by PRE-SAFE ®
can then be reversed.
If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back slightly
when the vehicle is stationary.
Seat belt pre-tensioning is reduced and the
locking mechanism is released.
Seat-belt adjustment is an integral part of the
PRE-SAFE ®
convenience function. Information Occupant safety
55Safety Z

Gearshift recommendation
The gearshift recommendation assists you in
adopting a fuel-efficient driving style. The rec-
ommended gear is shown on the multifunction
display.
X Shift gear according to gearshift recommen-
dation :when shown in the multifunction
display of the instrument cluster. Drive programs
Drive program C (Comfort) Drive program
Cis characterised by the follow-
ing:
R the vehicle exhibits comfortable, economical
driving characteristics.
R the vehicle has improved driving stability, e.g.
on slippery road surfaces.
Drive program S (Sport) Drive program
Sis characterised by the follow-
ing:
R sporty engine settings.
Drive program I (Individual) In drive program
I, the following properties of
the drive program can be selected:
R the drive (engine and transmission manage-
ment)
R the suspension (vehicles with adjustable
damping)
R the steering
R the availability of the ECO start/stop function
R the climate control
Information on configuring drive program Iwith
the multimedia system can be found in the Dig-
ital Owner's Manual. Offroad drive program The
Offroad drive program is characterised by
the following:
R the vehicle exhibits optimised driving charac-
teristics for easily negotiable off-road terrain.
Drive program E (Economy) Drive program
Eis characterised by the follow-
ing:
R the vehicle exhibits particularly economical
driving characteristics.
R the vehicle has improved driving stability, e.g.
on slippery road surfaces.
R the performance of the air-conditioning and
heating systems is reduced. Automatic transmission
Important safety notes
G
WARNING
If the engine speed is above the idling speed
and you engage transmission position Dor R,
the vehicle could pull away suddenly. There is a risk of an accident.
When engaging transmission position Dor R,
always firmly depress the brake pedal and do not simultaneously accelerate. G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake. 154
Automatic transmissionDriving and parking

Offroad drive program
The Offroad drive program is characterised by
the following:
R the vehicle exhibits optimised driving charac-
teristics for easily negotiable off-road terrain.
Drive program E (Economy)
Drive program Eis characterised by the follow-
ing:
R comfort-oriented engine settings.
R optimal fuel consumption resulting from the
automatic transmission shifting up sooner.
R the vehicle pulls away more gently in forward
and reverse gears unless the accelerator
pedal is depressed fully.
R the vehicle has improved driving stability, e.g.
on slippery road surfaces.
R the automatic transmission shifts up sooner.
This results in the vehicle being driven at
lower engine speeds and the wheels being
less likely to spin.
R gliding mode is activated automatically when
engine-internal conditions are fulfilled and
the accelerator is not depressed. At the same
time the transmission’s clutch opens and the
vehicle rolls freely using its kinetic energy. As a result great distances can be completed
without the engine brake and fuel consump-
tion reduced.
i The availability of gliding mode depends on
various factors, including the following:
R the engine and transmission temperature
R the downhill gradient
R the vehicle speed
R performing regular adaptation functions
When you depress the brake pedal, gliding
mode is deactivated, depending on pedal
pressure.
When you activate cruise control or Distance Pilot DISTRONIC, gliding mode is not availa-
ble.
Mercedes-AMG vehicles Drive program I (Individual)
In drive program I, the following properties of
the drive program can be selected:
R the drive (engine management)
R the transmission management R
the suspension (vehicles with AMG RIDE
CONTROL)
R ESP ®
Information on configuring drive program Iwith
the multimedia system can be found in the Dig-
ital Owner's Manual.
Drive program C (Comfort)Drive program Cis characterised by the follow-
ing:
R the vehicle exhibits comfortable, economical
driving characteristics.
R the vehicle pulls away more gently in forward
and reverse gears unless the accelerator
pedal is depressed fully.
R the vehicle has improved driving stability, e.g.
on slippery road surfaces.
R optimal fuel consumption resulting from the
automatic transmission shifting up sooner.
The vehicle is driven in the low engine speed
range and the wheels are less likely to spin.
R gliding mode is available.
R the ECO start/stop function is available.
Drive program S (Sport) Drive program Sis characterised by the follow-
ing:
R the vehicle exhibits sporty driving character-
istics.
R the automatic transmission shifts up later.
Fuel consumption may be higher as a result of
the later automatic transmission shift points.
R the suspension exhibits stiff springing and
damping settings (vehicles with AIR RIDE
CONTROL).
R gliding mode is not available.
R the ECO start/stop function is not available.
Drive program S+ (Sport Plus)
Drive program S+is characterised by the fol-
lowing:
R the vehicle exhibits particularly sporty driving
characteristics.
R the automatic transmission shifts up later.
R fuel consumption may be higher as a result of
the later automatic transmission shift points.
R the suspension exhibits particularly stiff
springing and damping settings (vehicles with
AIR RIDE CONTROL). 160
Automatic transmissionDriving and parking

Important safety notes
G
WARNING
If wheels and tyres of the wrong size are used, the wheel brakes or suspension components
may be damaged. There is a risk of an acci-
dent.
Always replace wheels and tyres with those
that fulfil the specifications of the original
part.
When replacing wheels, make sure to fit the
correct:
R designation
R type
When replacing tyres, make sure to fit the
correct:
R designation
R manufacturer
R type G
WARNING
A flat tyre severely impairs the driving, steer-
ing and braking characteristics of the vehicle.
There is a risk of accident.
Tyres without run-flat characteristics:
R do not drive with a flat tyre.
R immediately replace the flat tyre with your
emergency spare wheel or spare wheel, or
consult a qualified specialist workshop.
Tyres with run-flat characteristics:
R pay attention to the information and warn-
ing notices on MOExtended tyres (tyres
with run-flat characteristics).
Accessories that are not approved for your vehi-
cle by Mercedes-Benz or are not being used cor- rectly can impair operating safety.
Before purchasing and using non-approved
accessories, visit a qualified specialist work-
shop and enquire about:
R suitability
R legal stipulations
R factory recommendations Further information regarding wheels and tyres
can be found under "Wheel/tyre combinations"
(Y page 347).
You can ask for information regarding permitted
wheel/tyre combinations at a Mercedes-Benz
Service Centre.
Information on tyre pressures can be found:
R on the tyre pressure table in the fuel filler flap
(Y page 164)
R under "Tyre pressure" (Y page 337)
Modification work on the brake system and
wheels is not permitted. The use of spacers or
brake dust shields is not permitted. This inva-
lidates the general operating permit for the vehi-
cle.
i Further information on wheels and tyres can
be obtained at any qualified specialist work-
shop. Operation
Information on driving
Check the tyre pressure when the vehicle is
heavily laden and adjust prior to a trip.
While driving, pay attention to vibrations, noises
and unusual handling characteristics, e.g. pull-
ing to one side. This may indicate that the
wheels or tyres are damaged. If you suspect that
a tyre is defective, reduce your speed immedi-
ately. Stop the vehicle as soon as possible to
check the wheels and tyres for damage. Hidden tyre damage could also be causing the unusual
handling characteristics. If you find no signs of
damage, have the tyres and wheels checked at aqualified specialist workshop.
When parking your vehicle, make sure not to
squash the tyre. If you cannot avoid driving over
obstacles, e.g. kerbs, do so slowly and at an
obtuse angle only. You could otherwise damage
the wheel rims and tyres. Regular checking of wheels and tyres
G
WARNING
Damaged tyres can cause tyre inflation pres-
sure loss. As a result, you could lose control of your vehicle. There is a risk of accident. 334
OperationWheels and ty
res