2017 MERCEDES-BENZ GLA SUV brake

Off-road driving
Important safety notes G
WARNING
If you drive on a steep incline at an angle or
turn on a steep incline, the vehicle could slip
sideways, tip and overturn. There is a risk of
an accident.
When driving on an incline, drive into the line of fall (upwards or downwards in a straight
line) and do not turn. G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system. There is a risk of fire.
When driving off road or on unpaved roads,
check the vehicle's underside regularly. In
particular, remove parts of plants or other
flammable materials which have become
trapped. In the case of damage, contact a
qualified specialist workshop.
! There is a risk of damage to the vehicle if:
R the vehicle becomes stuck, e.g. on a high
kerb or an unpaved road
R you drive too quickly over an obstacle, e.g.
a kerb, slowing thresholds or a pothole in
the road
R a heavy object strikes the underbody or
parts of the chassis
In situations like this, the body, underbody,
chassis parts, wheels or tyres could be dam-
aged without the damage being visible. Com- ponents damaged in this way can unexpect-
edly fail or, in the case of an accident, no lon-
ger withstand the strain they are designed to withstand.
If the underbody panelling is damaged, com-
bustible materials such as leaves, grass or
twigs can gather between the underbody and
the underbody panelling. If these materials
come into contact with hot parts of the
exhaust system, they can catch fire.
In such situations, have the vehicle checked
and repaired immediately at a qualified spe-
cialist workshop. If, on continuing your jour-
ney, you notice that driving safety is impaired, stop the vehicle immediately, paying atten-
tion to road and traffic conditions. In such
cases, consult a qualified specialist work-
shop.
The vehicle is only designed for easily negotiable
off-road terrain and poor road surfaces.
When driving off-road, substances such as sand, mud and water or water mixed with oil may get
into the brakes. This may lead to a reduction in
braking performance or total brake failure as a
result of increased wear. The braking charac-
teristics will vary depending on the substances
that get into the brakes. Clean the brakes after
driving off-road. If you notice grinding noises or
a reduction in braking performance, have the
brake system checked at a qualified specialist
workshop immediately. Adapt your driving style to the altered braking characteristics.
Driving off-road increases the possibility of dam-
age to the vehicle, which may cause assemblies
or systems to fail. Adapt your driving style to the conditions of the terrain. Drive carefully. Have
vehicle damage rectified immediately at a quali- fied specialist workshop.
Do not shift into transmission position iwhen
driving off-road. You could lose control of the
vehicle if you attempt to brake the vehicle using
the service brake. If the gradient is too steep for your vehicle, back up in reverse gear.
General notes H
Environmental note
Protection of the environment is of primary
importance. Treat nature with respect.
Observe all prohibiting signs.
Read this section before driving your vehicle off- road.
Off-road driving is only possible with the
ON&OFFROAD package.
The following driving systems are specially
adapted for driving over easily negotiable off-
road terrain:
R Off-road program (Y page 192)
R Off-road ABS (Y page 68)
R Off-road 4ETS (Y page 72)
R Off-road ESP ®
(Y page 74)
R DSR (Downhill Speed Regulation)
(Y page 190) Driving tips
173Driving and parking Z

Observe the following notes:
R Stop the vehicle before driving off-road. If
necessary, activate the off-road program
(Y page 151).
R To avoid damaging the vehicle, make sure
there is always sufficient ground clearance.
R Make sure that items of luggage and loads are
stowed safely and are well secured
(Y page 293).
R Always keep the engine running and in gear
when driving on a downhill gradient. Activate
DSR (Y page 190).
R Drive slowly and evenly, if necessary at walk-
ing pace.
R Ensure that the wheels are in contact with the
ground at all times.
R Drive with extreme care on unknown off-road
routes where visibility is poor. For safety rea-
sons, get out of the vehicle first and survey
the off-road route.
R Check the depth of water before fording rivers
and streams.
R Watch out for obstacles.
R Take care when turning on an uphill or down-
hill slope or when driving across a slope. The
vehicle could otherwise tip over.
R Always keep the side windows and the pano-
rama sliding sunroof closed during the jour-
ney.
R Do not deviate from marked routes.
R Do not use the HOLD function when driving
off-road, on steep uphill or downhill gradients
or on slippery or loose surfaces. The HOLD
function cannot hold the vehicle on such sur- faces.
Checklist before off-road driving X
Engine oil level: check the engine oil and top
it up if necessary.
When driving on steep gradients, the oil level must be sufficiently high to ensure a correct
oil supply in the vehicle.
X Wheels and tyres: check the tyre tread
depth and tyre pressure.
X Check for damage and remove any foreign
objects, e.g. small stones, from the wheels/
tyres.
X Replace any missing valve caps. X
Replace dented or damaged wheels.
X Wheels: dented or bent wheels can lead to a
loss of tyre pressure and damage to the tyre
bead. Before driving off-road, check the
wheels and replace them if necessary.
Checklist after off-road driving !
If you detect damage to the vehicle after
driving off-road, have the vehicle checked
immediately at a qualified specialist work-
shop.
X Deactivate the off-road program
(Y page 151).
X Deactivate DSR (Y page 190).
X Clean the headlamps and rear lights and
check for damage.
X Clean the front and rear licence plates.
X Clean the wheels and tyres with a water jet
and remove any foreign objects.
X Clean the wheels, wheel arches and the vehi-
cle underside with a water jet; check for any
foreign objects and damage.
X Check whether twigs or other parts of plants
have become trapped. These increase the risk
of fire and can damage fuel pipes, brake
hoses or the air bellows of the axle joints and propeller shafts.
X After the trip, examine without fail the entire
undercarriage, wheels, tyres, brakes, body-
work structure, steering, chassis and exhaust
system for damage.
X After driving in sand, mud, gravel, water or
similar dirty conditions, have the following
checked and cleaned:
R brake discs
R wheels
R brake pads
R axle joints
X If you detect strong vibrations after driving
off-road, check for foreign objects in the
wheels and drive train and remove them if
necessary. Foreign objects can disturb the
balance and cause vibrations.
Driving over poor road surfaces places greater
demands on your vehicle than driving on normal roads. After driving off-road, check the vehicle.
This allows you to detect damage promptly and
reduce the risk of an accident to yourself and
other road users. 174
Driving tipsDriving and parking

Driving on sand
Observe the following rules when driving on
sand:
R Activate the off-road program (Y page 151).
R Avoid high engine speeds.
R Use the left-hand steering wheel gearshift
paddle to shift to a lower gear appropriate to
the terrain.
R Drive quickly to overcome the rolling resist-
ance. Otherwise, the vehicle could dig itself
into the sand.
R Drive in the tracks of other vehicles if possi-
ble. Make sure that:
- the tyre ruts are not too deep
- the sand is firm enough
- your vehicle has sufficient ground clear-
ance
Tyre ruts and unpaved roads !
Check that the ruts are not too deep and
that your vehicle has sufficient clearance.
Otherwise, your vehicle could be damaged or bottom out and get stuck.
Observe the following rules when driving along
ruts in off-road terrain or on roads with loose
gravel: R Activate the off-road program (Y page 151).
R Avoid high engine speeds.
R Shift to a lower gear using the left-hand steer-
ing wheel gearshift paddle.
R Drive slowly.
R Where ruts are too deep, drive with the
wheels on one side on the middle section of
turf if possible. Travelling uphill
Approach/departure angle G
WARNING
If you drive on a steep incline at an angle or
turn on a steep incline, the vehicle could slip
sideways, tip and overturn. There is a risk of
an accident.
When driving on an incline, drive into the line of fall (upwards or downwards in a straight
line) and do not turn. R
Observe the warnings for off-road driving
(Y page 173).
R Follow the line of fall when driving on slopes
and steep inclines.
R Before driving on extreme uphill and extreme
downhill gradients, select the off-road pro-
gram (Y page 151).
R Drive slowly.
R Accelerate gently and make sure that the
wheels are gripping.
R Avoid high engine speeds, except when driv-
ing on sandy and muddy routes with high driv-
ing resistance.
R Use the left-hand steering wheel gearshift
paddle to shift to a lower gear appropriate to
the gradient.
R Use the left-hand gearshift paddle to shift to a
lower gear on long and steep downhill gradi-
ents.
Hill start assist will aid you when pulling away on
a hill. Further information on hill start assist
(Y page 147).
Do not shift into transmission position iwhen
driving off-road. You could lose control of the
vehicle if you attempt to brake the vehicle using
the service brake. If the gradient is too steep for your vehicle, back up in reverse gear.
Always observe the approach/departure angle
values (Y page 359).
Maximum gradient-climbing capability Always observe the maximum gradient climbing
ability values (Y page 359).
Hilltops When driving up an uphill gradient, slightly
reduce pressure on the accelerator immediately
before reaching the brow of the hill. Make use of the vehicle's own impetus to travel over the
brow.
This style of driving prevents:
R the vehicle from lifting off the ground on the
brow of a hill
R the vehicle from travelling too quickly down
the other side Driving tips
175Driving and pa rking Z

Driving downhill
R
Drive slowly.
R Do not drive at an angle down steep inclines.
Steer into the line of fall and drive with the
front wheels aligned straight forwards. Oth-
erwise, the vehicle could slip sideways, tip
and overturn.
R Before tackling steep downhill gradients, use
the left-hand steering wheel gearshift paddle
to shift to a lower gear.
R Activate DSR. If this is not sufficient, brake
gently. When doing so, make sure that the
vehicle is facing in the direction of the line of fall.
R Check that the brakes are working normally
after a long downhill stretch.
Off-road ABS is activated when the off-road pro- gram is selected.
At speeds below 30 km/h the front wheels lock
cyclically during braking. The digging-in effect
achieved in the process reduces the stopping
distance during off-road driving. The steerability of the vehicle is considerably reduced if the
wheels lock. Driving systems
Cruise control
General notes Cruise control maintains a constant road speed
for you. It brakes automatically in order to avoid
exceeding the set speed. You must select a
lower gear in good time on long and steep down-
hill gradients, especially if the vehicle is laden or towing a trailer. For vehicles with automatic
transmission, you need to shift manually using
the steering wheel gearshift paddles. By doing
so, you will make use of the braking effect of the engine. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly.
When the engine is running, you can use the
cruise control lever to limit the speed to any
speed between 30 km/h and the maximum
design speed of the vehicle. If the set value of
the permanent limiter is lower, then this value
applies (Y page 180).
Use cruise control only if road and traffic con-
ditions are appropriate for maintaining a steady speed for a prolonged period. The speed indicated in the speedometer may
differ slightly from the speed stored.
Important safety notes If you fail to adapt your driving style, cruise con-
trol can neither reduce the risk of an accident
nor override the laws of physics. Cruise control
cannot take into account road, weather or traffic conditions. Cruise control is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good time
and for staying in lane.
Do not use cruise control:
R in road and traffic conditions that do not allow
you to maintain a constant speed, e.g. in
heavy traffic or on winding roads.
R on icy or slippery roads. Braking or acceler-
ating can cause the drive wheels to lose trac-
tion and the vehicle could then skid.
R in poor visibility, e.g. due to fog, heavy rain or
snow.
If a new driver takes over, advise the new driver
of the speed stored.
Cruise control lever :
To activate or increase speed
; LIM indicator lamp
= To activate at the current speed/last stored
speed
? To activate or reduce speed
A To switch between cruise control and the
variable speed limiter
B To deactivate cruise control
You can operate cruise control and the variable
speed limiter with the cruise control lever. 176
Driving syste
msDriving and parking

The LIM indicator lamp on the cruise control
lever indicates which system you have selected:
R LIM indicator lamp off: cruise control is
selected
R LIM indicator lamp on: variable limiter is
selected
When you activate cruise control, the stored
speed is shown in the multifunction display for
five seconds.
Selecting cruise control X
To select cruise control: check whether LIM
indicator lamp ;is on or off.
If it is off, cruise control is already selected.
X If it is not, press the cruise control lever in the
direction of arrow A.
LIM indicator lamp ;in the cruise control
lever goes out. Cruise control is selected.
Activation conditions To activate cruise control, all of the following
activation conditions must be fulfilled:
R the electric parking brake must be released
R you are driving faster than 30 km/h
R ESP ®
must be switched on, but not interven-
ing
R cruise control must be selected
Storing, maintaining and calling up a
speed Storing and maintaining the current
speed
You can store the current speed if you are driv-
ing faster than 30 km/h. X Accelerate the vehicle to the desired speed.
X Briefly press the cruise control lever up :or
down ?.
X Remove your foot from the accelerator pedal.
Cruise control is activated. The vehicle auto-
matically maintains the speed.
i Cruise control may be unable to maintain
the stored speed on uphill gradients. The
stored speed is resumed when the gradient
evens out. Cruise control maintains the
stored speed on downhill gradients by auto-
matically braking the vehicle. i
Vehicles with manual transmission:
R always drive at adequate, but not exces-
sive, engine speeds.
R change gear in good time.
R if possible, do not change down several
gears at a time.
Storing the current speed or re-calling the last stored speed G
WARNING
If you call up a stored speed and this is dif-
ferent from the current speed, the vehicle
accelerates or brakes. If you do not know
what the stored speed is, the vehicle may
accelerate or brake unexpectedly. There is a
risk of an accident.
Take the traffic conditions into account
before calling up the stored speed. If you do
not know what the stored speed is, store the
desired speed again.
X Briefly pull the cruise control lever towards
you =.
X Remove your foot from the accelerator pedal.
The first time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously stored
speed.
Setting a speed Bear in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the set speed.
X To adjust the set speed in 10 km/h incre-
ments: briefly press the cruise control lever
up : beyond the pressure point for a higher
speed, or down ;for a lower speed.
or
X Keep the cruise control lever pressed beyond
the pressure point until the desired speed is
set. Press the cruise control lever up :for a
higher speed or down ;for a lower speed.
X To adjust the set speed in 1 km/h incre-
ments:
briefly press the cruise control lever
up : to the pressure point for a higher speed
or down ;for a lower speed.
or
X Keep the cruise control lever pressed to the
pressure point until the desired speed is set. Driving systems
177Driving and parking Z

Press the cruise control lever up
:for a
higher speed or down ;for a lower speed.
i Cruise control is not deactivated if you
depress the accelerator pedal. For example, if
you accelerate briefly to overtake, cruise con-
trol adjusts the vehicle's speed to the last
speed stored after you have finished overtak-
ing.
Deactivating cruise control There are several ways to deactivate cruise con-
trol:
X Briefly press the cruise control lever forwards
B.
or X Brake.
or X Briefly press the cruise control lever in the
direction of arrow A.
The variable limiter is selected. LIM indicator lamp ;in the cruise control lever lights up.
Cruise control is automatically deactivated if:
R the vehicle is secured with the electric park-
ing brake
R you are driving at less than 30 km/h
R ESP ®
intervenes or you deactivate ESP ®
R while driving a vehicle with manual transmis-
sion, you shift into neutral or depress the
clutch pedal for longer than six seconds
R on vehicles with manual transmission, you
shift to a gear that is too high, and as a result
the engine speed is too low
R on vehicles with automatic transmission, you
shift to position iwhile driving
If cruise control is deactivated, you will hear a
warning tone. You will see the Cruise con‐
Cruise con‐
trol off trol off message in the multifunction display
for approximately five seconds.
i The last speed stored is cleared when you
switch off the engine. Speed limiter
General notes The speed limiter restricts the vehicle speed.
The speed limiter brakes automatically to
quickly regulate the stored speed. You must select a lower gear in good time on
long and steep downhill gradients, especially if
the vehicle is laden or towing a trailer. For vehi-
cles with automatic transmission, you need to
shift manually using the steering wheel gearshiftpaddles. By doing so, you will make use of the
braking effect of the engine. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly.
You can set a variable or permanent limit speed:
R Variable for a maximum permissible speed,
e.g. in built-up areas
R Permanent for restriction of the maximum
speed for technical reasons, such as when
driving on winter tyres (Y page 180)
i The speed indicated in the speedometer
may differ slightly from the maximum permis- sible speed stored.
Important safety notes If you fail to adapt your driving style, the speed
limiter can neither reduce the risk of an accident nor override the laws of physics. The limiter can-
not take into account road, weather or traffic
conditions. The limiter is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good time
and for staying in lane.
If a new driver takes over, advise the new driver
of the speed stored.
Variable speed limiter General notes
:
To activate or increase speed
; LIM indicator lamp
= To activate at the current speed/last stored
speed 178
Driving systemsDriving and parking

Cruise control or Distance Pilot DISTRONIC is
selected.
Vehicles with manual transmission: the lim-
iter switches off if you shift to a higher gear and as a result, the engine speed is too low.
i The last speed stored is cleared when you
switch off the engine.
Permanent limiter If you wish to restrict the maximum speed of the
vehicle for an extended period (e.g. when driving with winter tyres), the desired maximum speed
can be set with the permanent limiter.
You can use the on-board computer to limit the
speed to a value between 160 km/h and
240 km/h (Y page 229).
Shortly before the stored speed is reached, it
appears in the multifunction display. When you
confirm the message with aor%, the
display is suppressed until you next switch off
the engine. The speed will only be displayed
again once the engine has been restarted.
The permanent limiter remains active even if the variable limiter is deactivated. The driven speed
will remain below the stored speed even in the
event of kickdown. Distance Pilot DISTRONIC
General notes Distance Pilot DISTRONIC regulates the speed
and automatically helps you maintain the dis-
tance to the vehicle detected in front. The sys-
tem detects vehicles using the radar sensor sys-
tem. Distance Pilot DISTRONIC brakes automat- ically to avoid exceeding the set speed or to
maintain the designated distance from the vehi- cle in front.
If Distance Pilot DISTRONIC detects that there is
a risk of a collision with the vehicle in front, you will be warned visually and acoustically. Without
your intervention, Distance Pilot DISTRONIC
cannot prevent a collision. An intermittent warn- ing tone will then sound and the distance warn- ing lamp will light up in the instrument cluster.
Brake immediately to increase the distance to
the vehicle in front, or take evasive action, pro-
vided it is safe to do so.
Distance Pilot DISTRONIC operates in the rangebetween 0 km/h and 200 km/h. Shift to a lower gear in good time on long and
steep downhill gradients. Take particular note of
this when driving a laden vehicle. By doing so,
you will make use of the braking effect of the
engine. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly.
Do not use Distance Pilot DISTRONIC on roads
with steep gradients.
For Distance Pilot DISTRONIC to assist you
when driving, the radar sensor system must be
operational.
Important safety notes G
WARNING
Distance Pilot DISTRONIC does not recognise
R people or animals
R stationary objects on the road, e.g. stopped
or parked vehicles
R oncoming vehicles or crossing traffic
As a result, Distance Pilot DISTRONIC may
neither give warnings nor intervene in such
situations. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. G
WARNING
Distance Pilot DISTRONIC cannot always
clearly identify other road users and complex
traffic situations.
In such cases, Distance Pilot DISTRONIC may:
R give an unnecessary warning and then
brake the vehicle
R neither give a warning nor intervene
R accelerate or brake unexpectedly
There is a risk of an accident.
Continue to drive carefully and be ready to
brake, especially if Distance Pilot DISTRONIC
warns you. G
WARNING
Distance Pilot DISTRONIC brakes your vehicle with up to 50% of the maximum possible
deceleration. If this deceleration is not suffi-
cient, Distance Pilot DISTRONIC alerts you 180
Driving systemsDriving and parking

with a visual and acoustic warning. There is a
risk of an accident.
Apply the brakes yourself in these situations
and try to take evasive action.
! When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations:
R when towing away
R in a car wash
If you fail to adapt your driving style, Distance
Pilot DISTRONIC can neither reduce the risk of
an accident nor override the laws of physics.
Distance Pilot DISTRONIC cannot take into
account road, weather or traffic conditions. Dis-
tance Pilot DISTRONIC is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, for braking in good time
and for staying in lane.
Do not use Distance Pilot DISTRONIC:
R in road and traffic conditions that do not allow
you to maintain a constant speed, e.g. in
heavy traffic or on winding roads.
R on smooth or slippery roads. Braking or accel-
erating can cause the drive wheels to lose
traction and the vehicle could then skid.
R in poor visibility, e.g. due to fog, heavy rain or
snow.
Distance Pilot DISTRONIC may not detect nar-
row vehicles driving in front, e.g. motorcycles, or
vehicles driving on a different line.
In particular, the detection of obstacles can be
impaired in the following situations:
R dirt on the sensors or obscured sensors
R snow or heavy rain
R interference by other radar sources
R strong radar reflections, e.g. in multi-storey
car parks
If Distance Pilot DISTRONIC no longer detects a vehicle in front, Distance Pilot DISTRONIC may
unexpectedly accelerate to the speed stored. This speed can:
R be too high for a filter lane or a slip road
R be so high on the right lane that you pass
vehicles driving in the left lane
R be so high in the left lane that you pass vehi-
cles driving in the right lane
If a new driver takes over, advise the new driver
of the speed stored.
Cruise control lever :
To store the current speed or a higher speed
; To set the specified minimum distance
= LIM indicator lamp
? To store the current speed or re-call the last
stored speed
A To store the current speed or a lower speed
B To switch between Distance Pilot
DISTRONIC and the variable limiter
C To deactivate Distance Pilot DISTRONIC
With the cruise control lever, you can operate
Distance Pilot DISTRONIC and the variable lim-
iter.
LIM indicator lamp =on the cruise control lever
indicates which system you have selected:
R LIM indicator lamp = =off: Distance Pilot
DISTRONIC is selected.
R LIM indicator lamp = =on: variable limiter is
selected.
Selecting Distance Pilot DISTRONIC X
Check whether LIM indicator lamp =is off. Driving systems
181Driving and parking Z