ECU MERCEDES-BENZ A-CLASS HATCHBACK 2015 Service Manual

X
Open the socket cover.
X Insert the plug connector with lug :into
groove =on the socket.
X Turn bayonet connection ;clockwise to
the stop.
X Let the cover engage.
X If you are using an adapter cable, secure
the cable to the trailer with cable ties. Towing a trailer
235Driving and parking Z

the fuel tank, a vehicle being refuelled
C
appears instead of approximate range :.
Recuperation display =shows you if
energy has been recuperated from the
kinetic energy in overrun mode and saved
in the battery. Recuperation display =
depends on the engine installed and is
therefore not available in all vehicles.
Digital speedometer X
Press the =or; button on the steer-
ing wheel to select the Trip
Trip menu.
X Press the 9or: button to select
digital speedometer ;.
Gearshift recommendation :Zmay also
be displayed.
Observe the information on gearshift rec-
ommendation :for manual transmission
(Y page 168 )or for automatic transmission
(shifting manually) (Y page 177).
Mercedes-AMG vehicles: a gearshift rec-
ommendation is shown in the status bar of
the multifunction display and not in the dig- ital speedometer display.
Resetting values X
Press the =or; button on the steer-
ing wheel to select the Trip
Trip menu.
X Press the 9or: button to select the
function that you wish to reset. X
Press ato confirm.
X Press :to select Yes Yesand press ato
confirm.
You can reset the values of the following func-
tions:
R Trip meter
R "From start" trip computer
R "From reset" trip computer
R ECO display
If you reset the values in the "ECO display",
the values in the "From start" trip computer
are also reset. If you reset the values in the
"From start" trip computer, the values in the
"ECO display" are also reset. Navigation menu
Displaying navigation instructions In the
Navi Navimenu, the multifunction display
shows navigation instructions.
Further information on navigation can be
found in the separate Audio 20 or COMAND
Online operating instructions.
X Switch on Audio 20 or COMAND Online;
see the separate operating instructions.
X Press the =or; button on the steer-
ing wheel to select the Navi
Navi menu.
Route guidance not active :
Direction of travel
; Current road Menus and submenus
243On-board computer/Displays Z

Problem
Possible causes/consequences and
M
MSolutions ü
The red seat belt warn-
ing lamp lights up after
the engine starts, as
soon as the driver's or
the front-passenger
door is closed.
The driver or passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 44).
The warning lamp goes out. There are objects on the front-passenger seat.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out. ü
The red seat belt warn-
ing lamp flashes and an
intermittent audible
warning sounds. The driver or passenger has not fastened their seat belt. At the
same time, you are driving faster than 25 km/h or have briefly
driven faster than 25 km/h.
X Fasten your seat belt (Y page 44).
The warning lamp goes out and the intermittent warning tone
ceases. There are objects on the front-passenger seat. At the same time,
you are driving faster than 25 km/h or have briefly driven faster
than 25 km/h.
X Remove the objects from the front-passenger seat and stow
them in a secure place.
The warning lamp goes out and the intermittent warning tone
ceases. Wa
rning and indi cator lamps in the instrument cluster
293On-board computer/Displays Z

Tyres
Problem
Possible causes/consequences and
M
MSolutions h
The yellow tyre pres-
sure monitor warning
lamp (pressure loss/
malfunction) is lit.
The tyre pressure monitor has detected a loss of pressure in at
least one of the tyres.
G WARNING
Underinflated tyres pose the following risks:
R the tyres may burst, especially as the load and vehicle speed
increase
R the tyres may wear excessively and/or unevenly, which may
greatly impair tyre traction
R the driving characteristics, as well as steering and braking, may
be greatly impaired
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
manoeuvres. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 184).
X Observe the additional display messages in the multifunction
display.
X Check the tyres and, if necessary, follow the instructions for a
flat tyre (Y page 340).
X Check the tyre pressure (Y page 364).
X If necessary, correct the tyre pressure. h
The yellow tyre pres-
sure monitor warning
lamp (pressure loss/
malfunction) flashes for
approximately one
minute and then
remains lit. The tyre pressure monitor is faulty.
G WARNING
The system is possibly unable to detect or register low tyre pres-
sure.
There is a risk of an accident. X Observe the additional display messages in the multifunction
display.
X Consult a qualified specialist workshop immediately. 304
Warning and indicator lamps in the instrument clusterOn-board computer/
Displays

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Loading guidelines
G
WARNING
If objects, luggage or loads are not secured or not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury, especially when braking or abruptly changing directions.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey. G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate is open when the engine is running, particu-
larly if the vehicle is moving, exhaust fumes
could enter the passenger compartment.
There is a risk of poisoning.
Turn off the engine before opening the tail-
gate. Never drive with the tailgate open. G
WARNING
The exhaust tail pipe and tail pipe trim can
become very hot. If you come into contact
with these parts of the vehicle, you could burn
yourself. There is a risk of injury.
Always be particularly careful around the
exhaust tail pipe and the tail pipe trim. Allow
these components to cool down before touch-
ing them. The handling characteristics of a laden vehi-
cle are dependent on the distribution of the
load within the vehicle. For this reason, you
should observe the following notes when
transporting a load:
R never exceed the maximum permissible
gross vehicle weight or the permissible axle
loads for the vehicle (including occupants).
R the luggage compartment is the preferred
place to carry objects.
R position heavy loads as far forwards as pos-
sible and as low down in the load compart-ment as possible.
R the load must not protrude above the upper
edge of the seat backrests.
R always place the load against the rear or
front seat backrests. Make sure that the
seat backrests are securely locked into
place.
R always place the load behind unoccupied
seats if possible.
R use the lashing eyelets and the luggage
nets to transport loads and luggage.
R only use lashing eyelets and fastening com-
ponents that are suitable for the weight and size of the load.
R the maximum load capacity of the stowage
well under the luggage compartment floor
is 25 kg.
R secure the load with sufficiently strong and
wear-resistant lashing material. pad sharp
edges for protection.
! Do not position the load on one part of the
folding luggage compartment floor only.
The maximum load capacity of the folding
luggage compartment floor is 100 kg.
Spread the weight evenly to avoid damag-
ing the luggage compartment floor. Place a
solid board under the load if necessary.
Please note that the load on the luggage
compartment floor will be increased when
the load is lashed down. 306
Loading guidelinesStowing and features

Stowage areas
Stowage compartments
Important safety notes G
WARNING
If objects in the passenger compartment are
stowed incorrectly, they can slide or be
thrown around and hit vehicle occupants.
There is a risk of injury, particularly in the
event of sudden braking or a sudden change
in direction.
R Always stow objects so that they cannot be
thrown around in such situations.
R Always make sure that objects do not pro-
trude from stowage spaces, parcel nets or
stowage nets.
R Close the lockable stowage spaces before
starting a journey.
R Stow and secure objects that are heavy,
hard, pointed, sharp-edged, fragile or too
large in the luggage compartment.
Observe the loading guidelines (Y page 306).
Front stowage compartments Glove compartment
X
To open: pull handle :and open glove
compartment flap ;.
X To close: fold glove compartment flap ;
upwards until it engages.
There is a pen holder at the top of the glove
compartment flap. Spectacles compartment
X
To open: press marking :.
Make sure that the spectacles compartment
is always closed while the vehicle is in motion.
Stowage compartment in the front centreconsole Illustration: vehicles with DIRECT SELECT
lever
X To open: press the marking on cover :.
i Depending on the vehicle's equipment,
there may be an ashtray in the centre con-
sole instead of the stowage compartment. Stowage areas
307Stowing and features Z

Stowage compartment in front of the arm-
rest (vehicles with automatic transmis-
sion) Vehicles with DIRECT SELECT lever
X To open: press the marking on cover :.
i You can remove the non-slip mat and the
insert for cleaning. When removing the
insert you will have to overcome some
slight resistance.
Stowage compartment/telephone com-
partment under the armrest X
To open: on vehicles with moveable armr-
ests, make sure that the armrest is in the
rearmost position.
X Press button :and fold the armrest up.
Depending on the vehicle equipment, the
armrest can be moved backwards or forwards
in a longitudinal direction.
Depending on the vehicle's equipment, the
following may be in the stowage space:
R a multimedia connector unit with an SD
card slot and 2 USB ports, e.g. for use with an iPod
®
, iPhone ®
or MP3 player; see the
separate operating instructions
R a mobile phone bracket (Y page 318)
Stowage compartment under the driver's and front-passenger seat G
WARNING
If you exceed the maximum permitted load of the stowage compartment, the cover is
unable to restrain the objects. Objects may be
thrown out of the stowage compartment and
hit vehicle occupants as a result. There is a
risk of injury, particularly in the event of sud-
den braking or a sudden change in direction.
Always observe the maximum load of the
stowage compartment. Stow and secure
heavy objects in the luggage compartment.
The maximum permissible load of the stow-
age compartment is 1.2 kg. X
To open: pull handle :up and fold
cover ;forwards.
On vehicles with a fire extinguisher instead of
a stowage compartment, the fire extinguisher
is installed under the driver's seat. 308
Stowage areasStowing and features

Securing a load
Lashing eyelets General notes
Observe the following notes on securing
loads:
R observe the loading guidelines
(Y page 306).
R secure the load using the lashing eyelets.
R distribute the load on the lashing eyelets
evenly.
R do not use elastic straps or nets to secure a
load. These are only intended as an anti-slip protection for light loads.
R do not route lashing materials across sharp
edges or corners.
R pad sharp edges for protection.
Luggage compartment :
Lashing eyelets
Bag hook G
WARNING
The bag hooks cannot restrain heavy objects
or items of luggage. Objects or items of lug-
gage could be flung around and thereby hit
vehicle occupants when braking or abruptly
changing directions. There is a risk of injury.
Only hang light objects on the bag hooks.
Never hang hard, sharp-edged or fragile
objects on the bag hooks.
! The bag hook can bear a maximum load of
3 kg. Do not use it to secure a load. :
Bag hook Parcel shelf
! The maximum load which may be placed
on the rear shelf is 2.5 kg. X
To remove: detach straps :from the tail-
gate.
X Fold the parcel shelf downwards.
X Pull the parcel shelf out to the rear ;.
X To fit: place the parcel shelf on the guide
rails on the left and right.
X Push the parcel shelf evenly forwards using
both hands until it engages.
X Fold the parcel shelf up.
X Attach straps :to the tailgate. Stowage areas
311Stowing and features Z

Roof carrier
Important safety notes G
WARNING
When a load is transported on the roof, the
vehicle's centre of gravity rises and the han-
dling changes. If you exceed the maximum
roof load, the handling as well as steering and braking characteristics are severely affected.
There is a risk of an accident.
Always observe the maximum roof load and
adapt your driving style.
! Mercedes-Benz recommends that you
only use roof carriers that have been tested and approved for Mercedes-Benz vehicles.
This helps to prevent damage to the vehi-
cle.
Position the load on the roof carrier in such
a way that the vehicle will not sustain dam-
age even when it is in motion.
Ensure that, depending on the vehicle's
equipment, you can raise the panorama
sliding sunroof fully and open the tailgate
fully when the roof carrier is fitted.
You will find information on the maximum roof
load in the "Technical data" section
(Y page 404).
An incorrectly secured roof carrier or roof
load may become detached from the vehicle.
You must therefore ensure that you observe
the roof carrier manufacturer's installation
instructions.
i Vehicles with panorama sliding sun-
roof: if a roof carrier is fitted, the panorama
sliding sunroof cannot be opened. In order
to allow ventilation of the vehicle interior,
you can raise the panorama sliding sunroof.
If a roof carrier approved by Mercedes-
Benz makes contact with the panorama
sliding sunroof, the sunroof will lower
slightly but remain raised in the rear. Attaching the roof carrier
X
Open covers :carefully in the direction of
the arrow.
X Fold covers :upwards.
X Only secure the roof carrier to the anchor-
age points under covers :.
X Observe the manufacturer's installation
instructions. Features
Cup holders
Important safety notes G
WARNING
The cup holder cannot secure a drinks con-
tainer in place during a journey. If you use a
cup holder during a journey, the drinks con-
tainer could be flung around and liquid could
be spilt. Vehicle occupants could come into
contact with the liquid and, in particular, be
scalded by hot liquid. You could be distracted
from the traffic situation and lose control of
the vehicle. There is a risk of an accident and
injury.
Only use the cup holder when the vehicle is
stationary. Only place containers of a suitable size in the cup holder. Seal the container, in
particular when it contains hot liquid. G
WARNING
If objects in the passenger compartment are
stowed incorrectly, they can slide or be Features
313Stowing and features
Z

thrown around and hit vehicle occupants.
There is a risk of injury, particularly in the
event of sudden braking or a sudden change
in direction.
R Always stow objects so that they cannot be
thrown around in such situations.
R Always make sure that objects do not pro-
trude from stowage spaces, parcel nets or
stowage nets.
R Close the lockable stowage spaces before
starting a journey.
R Stow and secure objects that are heavy,
hard, pointed, sharp-edged, fragile or too
large in the luggage compartment.
! Only use the cup holders for containers of
the right size and which have lids. The
drinks could otherwise spill.
Observe the loading guidelines (Y page 306).
The stowage compartments in the doors pro- vide space for bottles:
R front: capacity up to 1.0 l
R rear: capacity up to 0.5 l
Cup holders in the front centre console All vehicles (except vehicles with Audio 5)
Two coin holders
=and a card holder ;can
be found in the cup holder.
The cup holder and the rubber mat under-
neath can be removed for cleaning. Clean
them with clean, lukewarm water only.
X To remove: lift the cup holder up :and
out with a brief tug. X
To fit: insert cup holder :into lateral
curved sections ;in the stowage com-
partment. When doing so, insert the cup
holder in such a way that the cant of the
upper section of the cup holder faces for-
wards.
X Press cup holder :downwards until it
engages on the right and left-hand sides.
Vehicles with Audio 5 X
Fold lift-up lid :in stowage compartment
= up until it engages in the two lugs ;.
You can use front part ?as a cup holder.
Cup holder in the rear seat armrest !
Do not sit on or support your body weight
on the rear seat armrest when it is folded
down, as you could otherwise damage it.
! Close the cup holder before folding the
rear seat armrest up. Otherwise, the cup
holder could be damaged. 314
FeaturesSto
wing an d features