ECU MERCEDES-BENZ GLA SUV 2017 Manual Online

Do not use a rapid charging device to start the vehicle. If your vehicle's battery is discharged, the
engine can be jump-started from another vehicle or from a donor battery using jump leads. Observe the following points:
R the battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, jump-
start the vehicle using a donor battery or a jump-starting device
R vehicles with a petrol engine: jump-start the vehicle only when the engine and exhaust system
are cold
R do not start the engine if the battery is frozen. Let the battery thaw first
R jump-starting may be performed only using batteries with a nominal voltage of 12 V
R only use jump leads that are not damaged and have a sufficient cross-section and insulated
terminal clamps.
R make sure that the two vehicles do not touch
Make sure that:
R the jump leads are not damaged
R non-insulated parts of the terminal clamps do not come into contact with other metal parts while
the jump leads are connected to the battery
R the jump leads cannot come into contact with parts that can move when the engine is running,
such as the V-belt pulley or the fan
X Secure the vehicle by applying the electric parking brake.
X Manual transmission: depress the clutch pedal fully and shift to neutral.
X Automatic transmission: shift the transmission to position j.
X Turn the key to position gin the ignition lock and remove it.
X Switch off all electrical consumers, e.g. rear window heating, lighting etc.
X Open the bonnet. Position number
Bidentifies the charged battery of the other vehicle or an equivalent jump-starting
device.
X Press together cover :of positive clamp ;and slide it back.
X Connect positive terminal ;on your vehicle to positive terminal =of donor battery Busing the
jump lead. beginning with your own battery.
X Start the engine of the donor vehicle and run it at idling speed. 326
Jump-startingBreakdown assistance

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

hitch. You could otherwise damage the vehi-
cle.
! Observe the following points when towing
with a tow rope:
R Secure the tow rope on the same side on
both vehicles.
R Make sure that the tow rope is not longer
than legally permitted. Mark the tow rope in the middle, e.g. with a white cloth
(30 x 30 cm). This will make other road
users aware that a vehicle is being towed.
R Only secure the tow cable to the towing
eyes or, if available, to the trailer tow hitch.
R Observe the brake lamps of the towing
vehicle while driving. Always maintain a dis-
tance a distance so that the tow rope does not sag.
R Do not use steel cables or chains to tow
your vehicle. You could otherwise damage
the vehicle.
! Do not use the towing eyes for recovery pur-
poses as this could damage the vehicle. If in
doubt, recover the vehicle with a crane.
! Pull away smoothly when towing away or
tow-starting a vehicle. If the tractive power is too high, the vehicles could be damaged.
! You may tow the vehicle for a maximum of
50km. A towing speed of 50 km/h must not
be exceeded.
For towing distances over 50 km, the front
axle or the entire vehicle must be raised and
transported.
! To tow vehicles with KEYLESS-GO, use the
key instead of the Start/Stop button. The
automatic transmission may otherwise
switch to position Pwhen you open the driv-
er's or front-passenger door which could
damage the transmission.
! Vehicles with automatic transmission must
not be tow-started. The transmission may
otherwise be damaged.
Observe the legal requirements for the relevant countries when towing and tow-starting.
It is better to have the vehicle transported than
to have it towed.
If the vehicle can no longer be driven because of an accident or breakdown, you have the follow-
ing options:
R transporting the vehicle As a rule, you should have the vehicle trans-
ported.
R towing the vehicle with a tow rope or tow bar
Only tow the vehicle in exceptional cases.
The battery must be connected and charged.
Otherwise, you:
R cannot turn the key to position 2in the igni-
tion lock
R cannot release the electric parking brake
R cannot shift the transmission to position i
on vehicles with automatic transmission
The function of the electric parking brake and
the parking lock is dependent on the on-board
voltage.
If the on-board voltage is low or if there is a sys- tem malfunction:
R it may not be possible to apply the released
parking brake or
R it may no longer be possible to shift the trans-
mission to position j
Switch off non-essential consumers, e.g. the
radio.
Deactivate the automatic locking feature before towing the vehicle (Y page 229). You could oth-
erwise be locked out when pushing or towing
the vehicle.
Deactivate tow-away protection before the vehi- cle is towed (Y page 77). Fitting/removing the towing eye
Fitting the towing eye 328
Towing away and tow-startingBreakdown assistance

The brackets for the screw-in towing eye are
located in the bumpers. They are located at the rear and at the front, under covers :.
X Remove the towing eye from the stowage
space.
The towing eye is located with the vehicle tool
kit under the luggage compartment floor
(Y page 317).
Vehicles with a TIREFIT kit: the towing eye is
located under the tyre inflation compressor
(Y page 317).
X Press the mark on cover :inwards in the
direction of the arrow.
X Remove cover :from the opening.
X Screw in the towing eye clockwise to the stop.
Vehicles with a trailer tow hitch only have a
bracket at the front for the screw-in towing eye.
If you intend to use the vehicle for towing, fold
out the ball coupling (Y page 214) and secure
the towbar to it.
Removing the towing eye X
Loosen the towing eye and unscrew it.
X Attach cover :to the bumper and press until
it engages.
X Place the towing eye in the stowage well
under the luggage compartment floor
(Y page 317).
X Vehicles with a TIREFIT kit: replace the tyre
inflation compressor (Y page 317).Towing the vehicle with the front axle
raised
When towing your vehicle with the front axle
raised, it is important that you observe the
safety instructions (Y page 327).
Only vehicles without 4MATIC can be towed
with the front axle raised.
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised; otherwise,
the transmission may be damaged.
Vehicles with 4MATIC may either be towed with
both axles on the ground or be loaded and trans- ported.
! The ignition must be switched off if you are
towing the vehicle with the front axle raised. Intervention by ESP
®
could otherwise dam-
age the brake system.
X On vehicles with KEYLESS-GO or the KEY-
LESS-GO start function: you must use the
key instead of the Start/Stop button
(Y page 145).
X Make sure that the vehicle is stationary.
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 Vehicles with automatic transmission:
shift the automatic transmission to position
j.
or X Vehicles with manual transmission:
depress the clutch pedal fully and shift to
neutral.
X Release the brake pedal.
X Release the electric parking brake.
X Deactivate tow-away protection (Y page 77).
X Deactivate automatic locking (Y page 229).
X Switch on the hazard warning lamps
(Y page 118).
X Turn the key in the ignition lock to position g
and leave the key in the ignition lock. Towing the vehicle away with all
wheels on the ground
It is important that you observe the safety
instructions when towing away your vehicle
(Y page 327).
X On vehicles with KEYLESS-GO or the KEY-
LESS-GO start function: you must use the
key instead of the Start/Stop button
(Y page 145).
Vehicles with automatic transmission: The
automatic transmission automatically shifts to
position jwhen you open the driver's or front-
passenger door or when you remove the key
from the ignition lock. In order to ensure that the
automatic transmission stays in position i
when towing away the vehicle, you must
observe the following points:
X Make sure that the vehicle is stationary.
X Turn the key to position 2in the ignition
lock. Towing away and tow-starting
329Breakdown 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

Vehicles with 4MATIC may only be either towed
away with both axles on the ground or be loadedup and transported.
If the vehicle has transmission damage or dam-
age to the front or rear axle, have it transported on a transporter or trailer.
In the event of damage to the electrical sys-
tem:
If the battery is defective, the automatic trans-
mission will be locked in position j. To shift the
automatic transmission to position i, you
must provide power to the vehicle's on-board
electrical system in the same way as when jump- starting (Y page 325).
Have the vehicle transported on a transporter or trailer. Tow-starting (emergency engine
starting)
! Do not tow-start vehicles with automatic
transmission. You could otherwise damage
the automatic transmission.
i You can find information on "Jump-starting"
under (Y page 325).
Before tow-starting, the following conditions
must be fulfilled: R the battery is connected
R the engine has cooled down
R the exhaust system has cooled down
When tow-starting, it is important that you
observe the safety notes (Y page 327) and the
legal requirements in each respective country.
X Switch on the hazard warning lamps
(Y page 118).
X Fit the towing eye (Y page 328).
X Secure the rigid towing bar or the towing
rope.
X When the vehicle is stationary, depress the
brake pedal and keep it depressed.
X Turn the key to position 2in the ignition lock
(Y page 144).
X Depress the clutch pedal fully, engage second
gear and continue to keep the clutch pedal
fully depressed.
X Release the brake pedal.
X Tow-start the vehicle.
X Release the clutch pedal slowly; do not
depress the accelerator pedal while doing so. X
When the engine has been started, immedi-
ately depress the clutch pedal fully and shift
to neutral.
X Pull over at a suitable place and stop the vehi-
cle safely, paying attention to road and traffic
conditions.
X Use the electric parking brake to secure the
vehicle and prevent it from rolling away.
X Remove the rigid towing bar or towing rope.
X Remove the towing eye (Y page 329).
X Switch off the hazard warning lamps. Fuses
Important safety notes
G
WARNING
If you manipulate, bridge or replace a faulty
fuse with a fuse of a higher amperage, the
electric cables could be overloaded. This may result in a fire. There is a risk of an accident
and injury.
Always replace faulty fuses with specified newfuses of the correct amperage.
! Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse rating for the system concerned.
Only use fuses marked with an "S". Compo-
nents or systems could otherwise be dam-
aged.
! Make sure that no moisture can enter the
fuse box when the cover is open.
! When closing the cover, make sure that it is
lying correctly on the fuse box. Moisture seep-
ing in or dirt could otherwise impair the oper- ation of the fuses.
The fuses in your vehicle disconnect faulty cir-
cuits. If a fuse blows, all the components in the circuit and their functions will fail.
Blown fuses must be replaced with fuses of the same rating, which you can recognise by the
colour and fuse rating. The fuse ratings are listed
in the fuse allocation chart.
The fuse allocation chart is in the fuse box in the front-passenger footwell (Y page 332).
If the newly inserted fuse also blows, have the
cause traced and rectified at a qualified special- Fuses
331Breakdown assistance Z

ist workshop, e.g. a Mercedes-Benz Service
Centre. Before replacing a fuse
X Secure the vehicle against rolling away
(Y page 166).
X Switch off all electrical consumers.
X Vehicles without KEYLESS-GO: remove the
key from the ignition lock.
X Vehicles with KEYLESS-GO start-function
or KEYLESS-GO: open the driver's door.
The vehicle electronics are now in position
g. This is the same as “key removed”.
The fuses are located in various fuse boxes: R Fuse box in the engine compartment on the
left-hand side of the vehicle, when viewed in
the direction of travel
R Fuse box in the front-passenger footwell
The fuse allocation chart is on the fuse box in the front-passenger footwell (Y page 332).Fuse box in the engine compartment
G
WARNING
When the bonnet is open, and the windscreen wipers are set in motion, you can be injured by
the wiper linkage. There is a risk of injury.
Always switch off the windscreen wipers and
the ignition before opening the bonnet. X
Open the bonnet.
X Remove any existing moisture from the fuse
box using a dry cloth. X
To open: open clamps ;.
X Fold cover :up in the direction of the arrow
and remove it. X
To close: check whether the seal is lying cor-
rectly in cover :.
X Insert cover :at the back into openings =
on the fuse box.
X Fold down cover :. X
Hook clamps ;into the fuse box and close.
X Close the bonnet. Fuse box in the front-passenger foot-
well332
FusesBreakdown assistance

Radio type approval for the tyre pres-
sure monitor Country Radio type approval number
Argentina Schrader GG4 Numero de Regis-
tro CNC: H-12338 Brazil
Este equipmento opera em
carater secundario, isto e, nao
tem direito a protecao contra
interferencia prejudicial, mesmo
de estacoes do tipo, e nao pode
causar interferarencia a siste-
mas operando em carater pri-
mario.
Abu Dhabi
Dubai TRA
REGISTERED NO:
ER0099792/12.
DEALER NO: DA0047074/10
Jordan Kingdom of Jordan
Type approval for Tyre Pressure
sensor.
Manufacturer: Schrader Elec-
tronics Ltd.
Model: GG4
Type Approval Number:
TRC/LPD/2012/190
Model: MC34MA4
Type Approval Number:
TRC/LPD/2011/158
Morocco AGREE PAR L'ANRT MAROC
Numero d'agrement: MR 10216
ANRT 2012
Date d'agrement: 23/11/2012
Moldova Country Radio type approval number
Philip-
pines
NTC
Type Approved.
No: ESD-1306871C
Serbia
И 011 12
Singapore Complies with IDA Standards
DA 103365
South
Africa
TA-2012/1540 Approved
TA-2011/1370 Approved
Changing a wheel
Flat tyre
You can find information on what to do in the
event of a flat tyre in the "Breakdown assis-
tance" section (Y page 317). Information on
driving with MOExtended tyres in the event of a flat tyre can be found under "Breakdown assis-
tance" (Y page 318).
Vehicles with an emergency spare wheel: in
the event of a flat tyre, the emergency spare
wheel is fitted according to the description
under "Fitting a wheel" (Y page 343).
Vehicles with Mercedes-Benz emergency
call system: in the event of a flat tyre, you can
contact the Customer Assistance Centre for the
Mercedes-Benz emergency call system
(Y page 343). Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if 342
Changing a wheelWheels and tyres

the wheels or tyres have different dimensions.
The wheel brakes or suspension components may also be damaged. There is a risk of acci-
dent.
Interchange front and rear wheels only if the
wheels and tyres are of the same dimensions.
! On vehicles fitted with a tyre pressure mon-
itor, electronic components are located in the wheel.
Tyre-fitting tools should not be applied in thearea of the valve, as this could damage the
electronic components.
Only have tyres changed at a qualified spe-
cialist workshop.
Interchanging the front and rear wheels of dif-
fering dimensions can render the general oper-
ating permit invalid.
Observe the instructions and safety notes in the "Changing a wheel" section (Y page 342).
The wear patterns on the front and rear tyres
differ depending on the operating conditions.
Interchange the wheels before a clear wear pat-
tern has formed on the tyres. Front tyres typi-
cally wear more on the shoulders, while rear
tyres wear more in the centre.
On vehicles that have front and rear wheels of
the same size, you can interchange the wheels
every 5,000 to 10,000 km depending on the
degree of tyre wear. Ensure the direction of
rotation is maintained.
Clean the contact surfaces of the wheel and the
brake disc thoroughly every time a wheel is
interchanged. Check the tyre pressure and, if
necessary, restart the tyre pressure loss warn-
ing system or the tyre pressure monitor. Direction of rotation
Tyres with a specified direction of rotation have additional benefits, e.g. if there is a risk of aqua-
planing. These advantages can only be gained if the tyres are fitted corresponding to the direc-
tion of rotation.
An arrow on the sidewall of the tyre indicates its correct direction of rotation. Storing wheels
Store wheels in a cool, dry and preferably dark
place if they are not being used. Protect the
tyres against oil, grease, petrol and diesel. Fitting a wheel
Preparing the vehicle X
Stop the vehicle on solid, non-slippery and
level ground.
X Apply the electric parking brake manually.
X Move the front wheels to the straight-ahead
position.
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 Switch off the engine.
X Vehicles without KEYLESS-GO: remove the
key from the ignition lock.
X Vehicles with KEYLESS-GO start-function
or KEYLESS-GO: open the driver's door.
The vehicle electronics are now in position
u. This is the same as “key removed”.
X Vehicles with KEYLESS-GO start function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (Y page 144).
X If included in the vehicle equipment, remove
the tyre-change tool kit from the vehicle.
X Additionally secure the vehicle against rolling
away (Y page 166).
i Apart from some country-specific variants,
vehicles are not equipped with a tyre-change
tool kit. Some tools for changing a wheel are
specific to the vehicle. For more information
on which tools are required to perform a
wheel change on your vehicle, consult a quali-
fied specialist workshop.
Necessary tyre-changing tools may include,
for example:
R Jack
R Wheel chock
R Wheel wrench Changing a
wheel
343Wheels an d tyres Z

Securing the vehicle against rolling
away
If your vehicle is equipped with a wheel chock, it
can be found in the tyre-change tool kit
(Y page 317).
The folding wheel chock is an additional secur-
ing measure to secure the vehicle against rolling away, e.g. when changing a wheel.
X Fold both plates upwards :.
X Fold out lower plate ;.
X Insert the lugs on the lower plate fully into the
openings in base plate =.X
Place chocks or other suitable items under
the front and rear of the wheel that is diago-
nally opposite the wheel you wish to change.
Raising the vehicle G
WARNING
If you do not position the jack correctly at the appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack must be positioned vertically, directly under
the jacking point of the vehicle.
Observe the following when raising the vehi- cle:
R Use only the vehicle-specific jack that has
been tested and approved by Mercedes-Benz
to raise the vehicle. If the jack is used incor-
rectly, it could tip over while the vehicle is
raised.
R The jack is designed only to raise the vehicle
for a short time while a wheel is being
changed. It is not permissible to use it to per-
form maintenance work under the vehicle.
R Avoid changing the wheel on uphill and down-
hill slopes.
R Before raising the vehicle, secure it against
rolling away by applying the parking brake and
positioning wheel chocks. Do not release the parking brake while the vehicle is raised.
R The jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a large,
flat load-bearing underlay must be used. On a
slippery surface, a non-slip underlay must be
used, e.g. use a rubber mat on tiles.
R Do not use wooden blocks or similar objects
as a jack underlay. Otherwise, the jack will not be able to achieve its load-bearing capacity
due to the restricted height.
R Ensure that the distance between the under-
side of the tyre and the ground does not
exceed 3 cm.
R Never place your hands or feet under the
raised vehicle.
R Do not lie under the raised vehicle.
R Do not start the engine when the vehicle is
raised.
R Do not open or close a door or the tailgate
when the vehicle is raised.
R Ensure that no persons are present in the
vehicle when raising the vehicle.
Vehicles with steel wheels: the hub cap cov-
ers the wheel bolts. Before you can unscrew the wheel bolts, you must remove the wheel trim. 344
Changing a wheelWheels and tyres