2019 MERCEDES-BENZ GLA wheel

Situation-dependent braking assis-
tance
General information
iObserve the "Important safety notes" sec-tion (Ypage 60).
With the help of the radar sensor system,Active Brake Assist can detect obstacles thatare in the path of your vehicle for an extendedperiod of time.
If Active Brake Assist detects a risk of collisionwith the vehicle in front, it calculates the brakepressure necessary to avoid a collision. If youapply the brakes forcefully, situation-depend-ent braking assistance adapts to the situationand automatically increases the brake pres-sure to a degree appropriate to the traffic sit-uation.
Situation-dependent braking assistance pro-vides braking assistance in hazardous situa-tions at speeds above 4 mph (7 km/h). It usesradar sensor technology to assess the trafficsituation.
Situation-dependent braking assistance iscapable of reacting to moving objects thathave already been detected as such at leastonce over the period of observation, up tovehicle speeds of around 155 mph(250 km/h).
Situation-dependent braking assistance canalso detect stationary objects, up to vehiclespeeds of around 44 mph (70 km/h).
XKeep the brake pedal depressed until theemergency braking situation is over.ABS prevents the wheels from locking.
The brakes will work normally again if:
Ryou release the brake pedal
Rthere is no longer any danger of a collision
Rno obstacle is detected in front of your vehi-cle
Situation-dependent braking assistance is thendeactivated.
Important safety notes
iObserve the "Important safety notes" sec-tion for driving safety systems (Ypage 60).
GWARNING
Active Brake Assist does not react:
Rto persons, bicycles, motorcycles or ani-
mals
Rto approaching vehicles
Rto cross traffic
Ron bends
As a result, Active Brake Assist cannot inter-
vene in all critical situations. There is a risk
of an accident.
Always pay careful attention to the traffic
situation and be prepared to brake.
GWARNING
Adaptive Brake Assist cannot always clearly
identify objects and complex traffic situa-
tions.
In such cases, Adaptive Brake Assist might:
Rintervene unnecessarily
Rnot intervene
There is a risk of an accident.
Always pay careful attention to the traffic
situation and be ready to brake. Terminate
the intervention in a non-critical driving sit-
uation.
Due to the nature of the system, complex butnon-critical driving conditions may also causeActive Brake Assist to intervene.
Even if Active Brake Assist is not available dueto a malfunction in the radar sensor system,the brake system is still available with fullbrake boosting effect and BAS.
ESP®(Electronic Stability Program)
General notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
ESP®monitors driving stability and traction,i.e. power transmission between the tires andthe road surface.
If ESP®detects that the vehicle is deviatingfrom the direction desired by the driver, one ormore wheels are braked to stabilize the vehi-
Driving safety systems63
Safety
Z

cle. The engine output is also modified to keepthe vehicle on the desired course within physi-
cal limits. ESP®assists the driver when pulling
away on wet or slippery roads. ESP®can alsostabilize the vehicle during braking.
ETS/4ETS (Electronic Traction System)
iObserve the "Important safety notes" sec-tion (Ypage 60).
ETS traction control is part of ESP®. On vehi-
cles with 4MATIC, 4ETS is part of ESP®.
Traction control brakes the drive wheels indi-vidually if they spin. This enables you to pullaway and accelerate on slippery surfaces, forexample if the road surface is slippery on oneside. In addition, more drive torque is transfer-red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP®.
Off-road 4ETS (Electronic Traction Sys-
tem)
A 4ETS system specifically suited to off-roadterrain is activated automatically once the off-road program is activated (Ypage 170).
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
GWARNING
If ESP®is malfunctioning, ESP®is unable to
stabilize the vehicle. Additionally, further
driving safety systems are deactivated. This
increases the risk of skidding and an acci-
dent.
Drive on carefully. Have ESP®checked at a
qualified specialist workshop.
Vehicles without 4MATIC:when towing yourvehicle with the front axle raised, it is impor-
tant that you observe the notes on ESP®
(Ypage 299).
If the

Only deactivate ESP®in the situations
described in the following.
The spinning of the wheels results in a cuttingaction for better traction on loose surfaces.
It may be best to deactivate ESP®in the fol-lowing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
described above no longer apply. ESP®willotherwise not be able to stabilize the vehicleif the vehicle starts to skid or a wheel startsto spin.
!Avoid spinning the driven wheels for an
extended period with ESP®deactivated. Youcould otherwise damage the drivetrain.
Deactivating/activating ESP®
You can deactivate or activate ESP®via theon-board computer (Ypage 197).
ESP®deactivated:
The

swerving. Trailers with a high center of grav-
ity can tip over before ESP®can detect this.
There is a risk of an accident.
Always adapt your driving style to the pre-
vailing road and weather conditions.
If your vehicle with trailer (vehicle/trailer com-bination) begins to lurch, you can only stabilizethe vehicle/trailer combination by depressingthe brake firmly.
ESP®trailer stabilization is active abovespeeds of about 65 km/h.
ESP®trailer stabilization does not work if
ESP®is deactivated or disabled because of amalfunction.
EBD (electronic brake force distribu-
tion)
General information
EBD monitors and controls the brake pressureon the rear wheels to improve driving stabilitywhile braking.
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
GWARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases
the risk of skidding and an accident.
You should therefore adapt your driving
style to the different handling characteris-
tics. Have the brake system checked at a
qualified specialist workshop.
Please observe the information on warningand indicator lamps (Ypage 233)
(Ypage 233) as well as on display messages(Ypage 206).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety andoffers increased braking comfort. In additionto the braking function, ADAPTIVE BRAKE also
has the HOLD function (Ypage 165) and hillstart assist (Ypage 128).
STEER CONTROL
General information
STEER CONTROL helps you by transmitting anoticeable steering force to the steering wheelin the direction required for vehicle stabiliza-tion.
This steering assistance is provided in particu-lar if:
Rboth right wheels or both left wheels are ona wet or slippery road surface when youbrake
Rthe vehicle begins to skid
Important safety notes
iObserve the "Important safety notes" sec-tion (Ypage 60).
No steering assistance is provided from STEERCONTROL, if:
RESP®is malfunctioning
Rthe steering is malfunctioning
If ESP®is malfunctioning, you will be assistedfurther by the electrical power steering.
Protection against theft
Immobilizer
The immobilizer prevents your vehicle frombeing started without the correct SmartKey.
XTo activate with the SmartKey:removethe SmartKey from the ignition lock.
XTo activate with KEYLESS-GO start-func-tion or KEYLESS-GO:switch the ignition offand open the driver's door.
XTo deactivate:switch on the ignition.
When leaving the vehicle, always take theSmartKey with you and lock the vehicle. Any-one can start the engine if a valid SmartKeyhas been left inside the vehicle.
iThe immobilizer is always deactivatedwhen you start the engine.
In the event that the engine cannot be star-ted (yet the vehicle's battery is charged),
Protection against theft67
Safety
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XTo unlock:press buttonC.
XTo lock:press buttonD.If all the doors and the tailgate are closed,the vehicle locks.
Meanwhile, the fuel filler flap will not belocked or unlocked.
You cannot unlock the vehicle centrally fromthe inside if the vehicle has been locked withthe SmartKey or KEYLESS-GO.
You can open a door from inside the vehicleeven if it has been locked. You can open therear doors from inside the vehicle unless theyare secured by the child-proof lock(Ypage 59).
If the vehicle has previously been locked withthe SmartKey from the outside, opening a doorfrom the inside will trigger the anti-theft alarmsystem. Switch off the alarm (Ypage 68).
If a locked door is opened from the inside, theprevious unlock status of the vehicle will betaken into consideration if:
Rthe vehicle was locked using the lockingbutton for the central locking, or
Rif the vehicle was locked automatically
The vehicle will be fully unlocked if it had pre-viously been fully unlocked. If only the driver'sdoor had been previously unlocked, only thedoor which has been opened from the inside isunlocked.
Automatic locking feature
XTo deactivate:press and hold buttonCforapproximately five seconds until a tonesounds.
XTo activate:press and hold buttonDforapproximately five seconds until a tonesounds.
If you press one of the two buttons and do nothear a tone, the relevant setting has alreadybeen selected.
The vehicle is locked automatically when theignition is switched on and the wheels areturning.
You could therefore lock yourself out if:
Rthe vehicle is being pushed
Rthe vehicle is being towed
Rthe vehicle is on a roller dynamometer
You can also switch the automatic lockingfunction on and off using the on-board com-puter (Ypage 199).
Unlocking the driver's door (mechan-
ical key)
If the vehicle can no longer be locked orunlocked with the SmartKey or KEYLESS-GO,use the mechanical key.
If you use the mechanical key to unlock andopen the driver's door, the anti-theft alarmsystem will be triggered. Switch off the alarm(Ypage 68).
XTake the mechanical key out of the Smart-Key (Ypage 71).
XInsert the mechanical key into the lock ofthe driver's door as far as it will go.
76Doors
Opening and closing

Correct driver's seat position
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
Observe the following when adjusting steeringwheelC, seat beltDand driver's seat

GWARNING
If the driver's seat is not engaged, it could
move forwards as far as the next catch dur-
ing movement such as braking or abrupt
changes of direction. As a result, you would
be pushed against your seat belt by the
unsecured driver's seat.
This could cause you to lose control of the
vehicle. The seat belt cannot protect as
intended and could result in additional
injury.
There is a risk of an accident and injury.
Before every journey, make sure that the
driver's seat is fully engaged.
Observe the safety notes on "Air bags"(Ypage 44) and "Children in the vehicle"(Ypage 53).
GWARNING
If the driver's seat is not engaged, it could
move unexpectedly while the vehicle is in
motion. This could cause you to lose control
of the vehicle. There is a risk of an accident.
Always make sure that the driver's seat is
engaged before starting the vehicle.
GWARNING
You could lose control of your vehicle if you
do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine.
GWARNING
If you adjust the seat height carelessly, you
or other vehicle occupants could be trapped
and thereby injured. Children in particular
could accidentally press the electrical seat
adjustment buttons and become trapped.
There is a risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under
the lever assembly of the seat adjustment
system.
!To prevent damage to the seats and theseat heating, observe the following notes:
RDo not spill liquids onto the seats. Dry theseats as soon as possible if liquid doesget spilled on the seats.
RIf the seat covers are damp or wet, do notswitch on the seat heating. Also, do notuse the seat heating to dry the seats.
RClean the seat covers as recommended;see the "Interior care" section.
RDo not transport heavy loads on theseats. Do not place pointed objects onthe seat cushions such as knives, nails ortools. Where possible, use the seats onlyfor carrying passengers.
RWhen operating the seat heating, do notcover the seats with insulating materials,e.g. blankets, coats, bags, protective cov-ers, child seats or booster seats.
RWhen the seat heating is switched on, theseat surface can be damaged as a resultof objects being placed on the seats, forexample, seat cushions, child seats andprotective covers not approved byMercedes-Benz.
!Make sure that there are no objects in thefootwell under or behind the seats whenmoving the seats back. There is a risk thatthe seats and/or the objects could be dam-aged.
iFurther related subjects:
RCargo compartment enlargement (foldingdown the rear seats) (Ypage 253)
Seats93
Seats, steering wheel and mirrors
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Adjusting the seats manually
Vehicles without the seating comfort
package
Seat fore-and-aft adjustment:
XLift handleCand slide the seat forwards orbackwards.
XRelease leverCagain.Make sure that you hear the seat engage inposition.
Backrest angle:
XRelieve the pressure on the backrest.
XTurn handwheel