2017 MERCEDES-BENZ GLA SUV steering

X
To reduce the tyre pressure: depress pres-
sure release button :next to pressure
gauge ;.
X When the tyre pressure is correct, unscrew
the filler hose from the valve of the sealed
tyre.
Please note that tyre sealant may leak out
when unscrewing the filler hose.
X Screw the valve cap onto the tyre valve of the
sealed tyre.
X Pull the tyre sealant bottle out of the tyre
inflation compressor.
The filler hose stays on the tyre sealant bottle.
X Drive to the nearest qualified specialist work-
shop and have the tyre changed there.
X Have the tyre sealant bottle replaced as soon
as possible at a qualified specialist workshop.
X Have the tyre sealant bottle replaced every
four years at a qualified specialist workshop. Battery (vehicle)
Important safety notes
Work on the battery, e.g. removing or fitting,
requires specialist knowledge and the use of
special tools. Therefore, always have work on
the battery carried out at a qualified specialist
workshop. G
WARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can lead to function restrictions applying to
safety-relevant systems, e.g the lighting sys-
tem, the ABS (anti-lock braking system) or the
ESP ®
(Electronic Stability Program). The oper-
ating safety of your vehicle may be restricted.
You could lose control of the vehicle, for
example:
R when braking
R in the event of abrupt steering manoeuvres
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar inci- dent, contact a qualified specialist workshop immediately. Do not drive any further. Always
have work on the battery carried out at a
qualified specialist workshop.
Further information about ABS (Y page 68) and
ESP ®
(Y page 72). G
WARNING
Electrostatic build-up can lead to the creation of sparks, which could ignite the highly explo-
sive gases of a battery. There is a risk of an
explosion.
Before handling the battery, touch the vehicle body to remove any existing electrostatic
build-up.
The highly flammable gas mixture is created
while the battery is charging and when jump-
starting.
Always make sure that neither you nor the bat-
tery is electrostatically charged. Electrostatic
charge is created, for example:
R by wearing synthetic-fibre clothing
R by friction between clothing and the seat
R if you pull or push the battery across carpet or
other synthetic materials
R if you rub the battery with a cloth G
WARNING
During the charging process, a battery produ- ces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into con-
tact with vehicle parts.
R Never place metal objects or tools on a bat-
tery.
R It is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting a battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected. 322
Battery (vehicle)Breakdo
wn assis tance

X
Connect negative terminal ?of donor battery Bto earth point Aof your vehicle using the jump
lead. Connect the jump lead to donor battery Bfirst.
X if the battery is fully discharged, leave the battery that is being used to jump-start connected for
a few minutes before attempting to start. This charges the empty battery a little
X Start the engine.
X Before disconnecting the jump leads, let the engines run for several minutes.
X First, remove the jump leads from earth point Aand negative terminal ?, then from positive
clamp ;and positive terminal =. Each time, begin at the contacts on your own vehicle.
X Close cover :of positive clamp ;after removing the jump leads.
X Close the bonnet.
X Have the battery checked at a qualified specialist workshop.
i Jump-starting is not considered to be a normal operating condition.
i Jump-starting cables and further information regarding jump-starting can be obtained at any
qualified specialist workshop. Towing away and tow-starting
Important safety notes
G
WARNING
Safety relevant functions are restricted or no
longer available if:
R the engine is not running
R the brake system or power steering is mal-
functioning
R there is a malfunction in the voltage supply
or the vehicle's electrical system
When your vehicle is towed away or towed
started, you may require considerably more
effort to steer and brake. There is a risk of an
accident.
In such cases use a rigid towing bar. Before
being towed away or tow started, make sure
the steering moves freely. G
WARNING
If the steering wheel lock is engaged, the vehi- cle can no longer be steered. There is a risk of
an accident.
Always switch on the ignition when towing
with a tow rope or a towing bar. G
WARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible gross weight of your vehicle, the:
R towing eye may be torn off
R car/trailer combination may swerve or
even overturn
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
Details on the permissible gross vehicle weight
of your vehicle can be found on the vehicle iden-
tification plate (Y page 351).
! When Active Brake Assist, Distance Pilot
DISTRONIC or the HOLD function is activated, the vehicle brakes automatically in certain
situations.
To avoid damage to the vehicle, deactivate
these systems in the following or similar sit-
uations:
R when towing away
R in a car wash
! Make sure that the electric parking brake is
released. If the electric parking brake is faulty, visit a qualified specialist workshop.
! Only secure the tow cable or tow bar to the
towing eyes or, if available, to the trailer tow Towing away and tow-starting
327Breakdown assistance Z

X
Depress the brake pedal and keep it
depressed.
X Shift the automatic transmission to position
i.
Vehicles with manual transmission: X Turn the key to position 2in the ignition
lock.
X When the vehicle is stationary, depress the
brake pedal and keep it depressed.
X Depress the clutch pedal fully and engage
neutral.
Vehicles with manual or automatic trans-
mission:
X Leave the key in position 2in the ignition
lock.
X Release the brake pedal.
X Release the electric parking brake.
X Switch on the hazard warning lamps
(Y page 118).
i In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination
switch as usual. In this case, only the turn
signals for the desired direction flash. When
you reset the combination switch, the hazard warning lamps start flashing again. Transporting the vehicle
4MATIC vehicles or vehicles with auto-
matic transmission !
When the vehicle is loaded for transport, the
front and rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged. All vehicles
!
You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
X Vehicles with manual transmission:
depress the clutch pedal fully and shift to
neutral.
X Turn the key to position 2in the ignition lock
(Y page 144).
X Vehicles with automatic transmission:
turn the key to position
2in the ignition lock
(Y page 144).
X Shift the transmission to position i.
As soon as the vehicle is loaded:
X Secure the vehicle against rolling away by
applying the electric parking brake.
X Vehicles with manual transmission: fully
depress the clutch pedal and engage first or
reverse gear.
X Vehicles with automatic transmission:
shift the transmission to position
j.
X Turn the key to position gin the ignition lock
and remove it.
X Secure the vehicle.
The towing eye or trailer tow hitch can be used
to pull the vehicle onto a trailer or transporter if
you wish to transport it. Notes for 4MATIC vehicles
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged. 330
Towing away and tow-startingBreakdown assistance

Tyre pressure loss warning system
General notes While the vehicle is in motion, the tyre pressure
loss warning system monitors the set tyre pres-
sure using the rotational speed of the wheels.
This enables the system to detect significant
pressure loss in a tyre. If the rotational speed of
a wheel changes as a result of a loss of tyre
pressure, a corresponding warning message will
appear on the multifunction display.
You can recognise the tyre pressure loss warn-
ing by the Run Flat Indicator active
Run Flat Indicator active
Restart with OK Restart with OK message which appears in
the multifunction display in the Serv.
Serv.menu.
Information on the message display can be
found in the "Restarting the tyre pressure loss
warning system" section (Y page 339).
Important safety notes The tyre pressure warning system does not warn
you of an incorrectly set tyre pressure. Observe the notes on the recommended tyre pressure
(Y page 337).
The tyre pressure loss warning system does not
replace the need to regularly check the tyre
pressure. An even loss of pressure on several
tyres at the same time cannot be detected by
the tyre pressure loss warning system.
The tyre pressure loss warning system is not
able to warn you of a sudden loss of air, e.g. if the
tyre is penetrated by a foreign object. In this
event, bring the vehicle to a halt by braking
carefully. Avoid abrupt steering manoeuvres.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted on your vehicle
R road conditions are wintry
R you are driving on a loose surface (e.g. sand or
gravel)
R you adopt a very sporty driving style (corner-
ing at high speeds or driving with high rates of
acceleration)
R you are towing a very heavy or large trailer
R you are driving with a heavy load (in the vehi-
cle or on the roof) Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system if
you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, make sure that the tyre
pressures are set properly on all four tyres for
the respective operating conditions. The rec-
ommended tyre pressures can be found in the
tyre pressure table on the fuel filler flap.
The tyre pressure loss warning system can
only give reliable warnings if you have set the correct tyre pressure. If an incorrect tyre
pressure is set, this incorrect value will be
monitored.
X Observe the notes in the section on tyre pres-
sures (Y page 337).
X Make sure that the key is in position 2in the
ignition lock (Y page 144).
X Press =or; on the steering wheel to
select the Serv. Serv.menu.
X Press the 9or: button to select
Tyre pressure
Tyre pressure.
X Press the abutton.
The Run Flat Indicator active
Run Flat Indicator active
Restart with OK
Restart with OK message appears in the
multifunction display.
If you wish to confirm the restart: X Press the abutton.
The Tyre
Tyre press.
press. now
nowOK?
OK?message appears
in the multifunction display.
X Press the 9or: button to select Yes
Yes.
X Press the abutton.
The Run Flat Indicator restarted
Run Flat Indicator restarted mes-
sage appears in the multifunction display.
After a teach-in period, the tyre pressure loss warning system will monitor the set tyre pres-
sures of all four tyres.
If you wish to cancel the restart: X Press the %button.
or X If the Tyre press. now OK?
Tyre press. now OK? message
appears, press the 9or: button to
select Cancel Cancel .
X Press the abutton.
The tyre pressure values stored at the last
restart will continue to be monitored. Tyre pressure
339Wheels and tyres Z

Tyre pressure monitor
General notes If a tyre pressure monitor is fitted, the vehicle's
wheels have sensors fitted that monitor the tyre
pressures in all four tyres. The tyre pressure
monitor warns you if the pressure drops in one
or more of the tyres. The tyre pressure monitor
functions only if the corresponding sensors are
fitted to all wheels.
Information on tyre pressures is shown on the
multifunction display. After a few minutes of
driving, the current tyre pressure of each tyre is
shown in the Serv.
Serv. menu of the multifunction
display, see illustration (example). Information on the message display can be
found in the "Checking the tyre pressure elec-
tronically" section (Y page 340).
Important safety notes It is the driver's responsibility to set the tyre
pressure to the recommended cold tyre pres-
sure suitable for the operating situation
(Y page 337). Note that the correct tyre pres-
sure for the current operating situation must
first be learnt by the tyre pressure monitor. If a
substantial loss of pressure occurs, the warning threshold for the warning message is aligned to
the learnt reference values. Restart the tyre
pressure monitor after adjusting to the cold tyre pressure (Y page 341). The current pressures
are saved as new reference values. This ensures that a warning message appears only if the tyre
pressure drops significantly.
The tyre pressure monitor does not warn you of
an incorrectly set tyre pressure. Observe the
notes on the recommended tyre pressure
(Y page 337).
The tyre pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. if the tyre is penetrated by a foreign object. In this event,
bring the vehicle to a halt by braking carefully.
Avoid abrupt steering manoeuvres. The tyre pressure monitor has a yellow warning
lamp on the instrument cluster for indicating a
pressure loss or malfunction. Depending on how
the warning lamp flashes or lights up, a tyre
pressure that is too low or a malfunction in the
tyre pressure monitor is indicated:
R if the warning lamp is lit continuously, the tyre
pressure on one or more tyres is significantly too low. The tyre pressure monitor is not mal-
functioning.
R if the warning lamp flashes for approximately
one minute and then remains lit constantly,
the tyre pressure monitor is malfunctioning.
In addition to the warning lamp, a message
appears on the multifunction display. Observe
the information on display messages
(Y page 256).
It may take up to ten minutes for a malfunction
of the tyre pressure monitor to be indicated. A
malfunction will be indicated by the tyre pres-
sure warning lamp flashing for approximately
one minute and then remaining lit. When the
fault has been rectified, the tyre pressure warn- ing lamp goes out after you have driven for a few minutes.
The tyre pressure values indicated by the on-
board computer may differ from those meas-
ured at a filling station using a pressure gauge.
The tyre pressures shown by the on-board com-
puter refer to those measured at sea level. At
high altitudes, the tyre pressure values indica-
ted by a pressure gauge are higher than those
shown by the on-board computer. In this case,
do not reduce the tyre pressures.
The operation of the tyre pressure monitor can
be affected by interference from radio transmit- ting equipment (e.g. cordless headphones, two-way radios) that may be being operated in or
near the vehicle.
Checking the tyre pressure electroni-
cally X
Make sure that the key is in position 2in the
ignition lock (Y page 144).
X Press =or; on the steering wheel to
select the Serv. Serv.menu.
X Press the 9or: button to select
Tyre pressure
Tyre pressure.
X Press the abutton.
The current tyre pressure for each wheel will
be displayed in the multifunction display. 340
Tyre pressureWheels and tyres

If the vehicle was parked for longer than
20 minutes, the Tyre pressures will be
Tyre pressures will be
displayed
displayed after
aftera
afew
few minutes
minutes of
ofdriv‐
driv‐
ing
ing message is shown.
After a teach-in period, the tyre pressure moni-
tor automatically detects new wheels or new
sensors. As long as a clear allocation of the tyre pressure values to the individual wheels is not
possible, the Tyre
Tyre pressure pressure monitor
monitoractive
active
message is shown instead of the tyre pressure
display. The tyre pressures are already being
monitored.
After an emergency spare wheel has been fitted, the system may still display the tyre pressure of
the removed wheel for a few minutes. If this
occurs, note that the value displayed for the
position where the spare wheel is fitted is not
the same as the current tyre pressure of the
emergency spare wheel.
Warning messages of the tyre pressure monitor If the tyre pressure monitor detects a pressure
loss in one or more tyres, a warning message is
shown in the multifunction display. The yellow
tyre pressure warning lamp then lights up:
R If the Please correct tyre pressure
Please correct tyre pressure
message appears in the multifunction display,
the tyre pressure in at least one tyre is too
low. The tyre pressure must be corrected
when the opportunity arises.
R If the Tyre Tyre pressure
pressure Check
Checktyre(s)
tyre(s) mes-
sage appears in the multifunction display, the
tyre pressure in one or more tyres has drop-
ped significantly. The tyres must be checked.
R If the Tyre pressure Caution Tyre mal‐
Tyre pressure Caution Tyre mal‐
function function message appears in the multifunc-
tion display, the tyre pressure in one or more
tyres has dropped suddenly. The tyres must
be checked.
Observe the instructions and safety notes in the display messages in the "Tyres" section
(Y page 256).
If the position of the wheels on the vehicle is
changed, the tyre pressures may be displayed in
the wrong positions for a short time. After a few minutes of driving, this is rectified and the tyre
pressures are displayed in the correct positions. Restarting the tyre pressure monitor When you restart the tyre pressure monitor, all
existing warning messages are deleted and the
warning lamps go out. The monitor uses the cur-
rently set tyre pressures as the reference values
for monitoring. In most cases, the tyre pressure monitor will automatically detect the new refer- ence values after you have changed the tyre
pressure. However, you can also set reference
values manually as described here. The tyre
pressure monitor then monitors the new tyre
pressure values.
X Use the table on the inside of the fuel filler flap
to ensure that the tyre pressure is set cor-
rectly in all four tyres for the current operating
conditions.
Also observe the notes in the section on tyre
pressures (Y page 337).
X Make sure that the key is in position 2in the
ignition lock (Y page 144).
X Press =or; on the steering wheel to
select the Serv.
Serv. menu.
X Press the 9or: button to select
Tyre pressure Tyre pressure.
X Press the abutton.
The multifunction display shows the current
tyre pressure for each tyre or the Tyre Tyrepres‐
pres‐
sures
sures will
willbe
bedisplayed
displayed after
aftera
afew
few
minutes of driving
minutes of driving message.
X Press the :button.
The multifunction display shows the Use Use
current pressures as new reference current pressures as new reference
values values message.
If you wish to confirm the restart:
X Press the abutton.
The Tyre
Tyre press:
press: monitor
monitor restarted
restarted mes-
sage appears in the multifunction display.
After you have been driving for a few minutes,
the system checks whether the current tyre
pressures are within the specified range. The
new tyre pressures are then accepted as ref- erence values and monitored.
If you wish to cancel the restart: X Press the %button.
The tyre pressure values stored at the last
restart will continue to be monitored. Tyre pressure
341Wheels and tyres Z