engine MERCEDES-BENZ A-CLASS HATCHBACK 2015 Owners Manual

Wide-angle function
:
Symbol for the wide-angle view function
; Own vehicle
= PARKTRONIC warning displays
Select this view when you are driving out of an
exit and the view of crossing traffic is restric- ted, for example. ATTENTION ASSIST
General notes ATTENTION ASSIST helps you during long,
monotonous journeys such as on motorways
and trunk roads. It is active in the 60 km/h to
200 km/h speed range. If ATTENTION ASSIST detects typical indicators of fatigue or
increasing lapses in concentration on the part
of the driver, it suggests taking a break.
Important safety notes ATTENTION ASSIST is only an aid. It may not
always detect fatigue or lapses in concentra-
tion until too late, or may not detect them at
all. The system is not a substitute for a well-
rested and attentive driver.
The functionality of ATTENTION ASSIST is
restricted, and warnings may be delayed or
not occur at all:
R if the length of the journey is less than
approximately 30 minutes
R if the road condition is poor, e.g. if the sur-
face is uneven or if there are potholes
R if there is a strong side wind R
if you have adopted a sporty driving style
with high cornering speeds or high rates of
acceleration
R if you are predominantly driving at a speed
below 60 km/h or above 200 km/h
R if the time has been set incorrectly
R in active driving situations, such as when
you change lanes or change your speed
ATTENTION ASSIST is reset and starts
assessing your tiredness again when you con- tinue your journey if:
R you switch off the engine
R you take off your seat belt and open the
driver's door, e.g. for a change of drivers or
to take a break
Displaying the attention level You can have current status information dis-
played in the assistance menu (Y page 247)
of the on-board computer.
X Select the assistance graphics display for
ATTENTION ASSIST using the on-board
computer (Y page 248).
The following information is displayed: R the length of the journey since the last
break
R the attention level determined by ATTEN-
TION ASSIST ( Attention level Attention level), dis-
played in a bar display in five levels from
high to low
R if ATTENTION ASSIST is unable to calculate
the attention level and cannot issue a warn-
ing, the System suspended System suspended message222
Driving systemsDriving and parking

appears. The bar display then changes the
display, e.g. if you are driving at a speed
below 60 km/h or above 200 km/h.
Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer (Y page 249).
The system determines the attention level
of the driver depending on the setting
selected:
If Standard
Standard is selected: the sensitivity with
which the system determines the attention
level is set to normal.
If Sensitive
Sensitive is selected: the sensitivity is set
higher. The attention level detected by
ATTENTION ASSIST is adapted accordingly
and the driver is warned earlier.
When ATTENTION ASSIST is deactivated, the é symbol appears in the multifunction
display in the assistance graphic display.
When ATTENTION ASSIST has been deactiva- ted, it is automatically reactivated after the
engine has been switched off. The sensitivity
selected corresponds to the last selection
activated (standard/sensitive).
Warning in the multifunction display If fatigue or increasing lapses in concentra-
tion are detected, a warning appears in the
multifunction display: ATTENTION ASSIST
ATTENTION ASSIST
Take a break!
Take a break! .
In addition to the message shown in the mul-
tifunction display, you will then hear a warn-
ing tone.
X If necessary, take a break.
X Confirm the message by pressing the a
button on the steering wheel.
On long journeys, take regular breaks in good
time that allow for adequate recuperation. If
you do not take a break and ATTEN-
TION ASSIST still detects increasing lapses in
concentration, you will be warned again after
15 minute sat the earliest. This will only hap-
pen if ATTENTION ASSIST still detects typical indicators of fatigue or increasing lapses in
concentration.
If a warning is output in the multifunction dis-
play, a service station search is performed in
COMAND Online. You can select a service
station and navigation to this service station
will then begin. This function can be activated
and deactivated in COMAND Online. Traffic Sign Assist
General notes Traffic Sign Assist displays the maximum
speed permitted and overtaking restrictions
to the driver in the instrument cluster. Driving onto a section of road in the wrong direction
triggers a warning. Traffic Sign Assist detects traffic signs with multifunction camera :
attached at the top of the windscreen. The
data and general traffic regulations stored in
the navigation system are also used to deter- mine the current speed limit.
If a traffic sign that is relevant to your vehicle
is passed, the display of the speed limits and
overtaking restrictions is updated.
The display can also be updated without a
visible traffic sign if:
R the vehicle changes roads (e.g. motorway
exit or slip road)
R a village or town boundary is passed which
is stored in the digital map
R the last traffic sign detected by the camera
has not been repeated Driving systems
223Driving and parking Z

Activating Blind Spot Assist
X Make sure that Blind Spot Assist is activa-
ted in the on-board computer
(Y page 249).
X Turn the key to position 2in the ignition
lock.
Warning lamps :in the exterior mirrors
light up red for approximately 1.5 seconds
and then turn yellow.
Towing a trailer
If you couple up a trailer, make sure that you have correctly established the electrical con-
nection. This can be accomplished by check- ing the trailer lighting. Blind Spot Assist is
then deactivated. The indicator lamps in the
exterior mirrors light up yellow and the
Blind
Blind Spot SpotAssist
Assist not
notavailable
available when
when
towing a trailer See Owner's Manual
towing a trailer See Owner's Manual
message appears in the multifunction dis-
play.
i You can deactivate the indicator lamps in
the exterior mirrors.
To do so, you will need to deactivate Blind
Spot Assist if:
R the key is in position 2in the ignition lock
R the engine is not running
R the electrical connection to the trailer
has been established
Lane Keeping Assist General notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of multifunc- tion camera
:attached at the top of the
windscreen. Lane Keeping Assist detects lane markings on the road and can warn you
before you leave your lane unintentionally.
This function is available in a speed range
between 60 km/h and 200 km/h.
A warning may be given if a front wheel
passes over a lane marking. It will warn you by
means of intermittent vibration through the
steering wheel for up to 1.5 seconds.
Important safety notes G
WARNING
Lane Keeping Assist cannot always clearly
identify lane markings.
In these cases, Lane Keeping Assist may:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep in lane, especially if Lane
Keeping Assist alerts you. G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is a risk of an accident.
Always steer, apply the brakes or accelerate
the vehicle yourself, especially if Lane Keep-
ing Assist alerts you.
If you fail to adapt your driving style, Lane
Keeping Assist can neither reduce the risk of
an accident nor override the laws of physics. Lane Keeping Assist cannot take into account
road, weather or traffic conditions. Lane
Keeping Assist is only an aid. You are respon- sible for the distance to the vehicle in front,
for vehicle speed, for braking in good time and
for staying in lane.
Lane Keeping Assist does not keep your vehi- cle in its lane. 228
Driving systemsDriving and pa
rking

Notes on towing a trailer
General notes Trailer towing is not permissible on the fol-
lowing models:
R
A 250 Sport
R A 250 Sport 4MATIC
R Mercedes‑AMG A 45 4MATIC
R A 180 d BlueEFFICIENCY Edition
R Vehicles with AMG Line
When towing a trailer, set the tyre pressure on the rear axle of the towing vehicle for the
maximum load. Further information on the
tyre pressure table in the fuel filler flap
(Y page 362).
Please note that when towing a trailer, the
following driving systems have limited avail-
ability or are not available at all.
R PARKTRONIC (Y page 209)
R Blind Spot Assist (Y page 226)
The height of the ball coupling changes with
the load of the vehicle. If necessary, use a
trailer with a height-adjustable drawbar.
You will find fitting dimensions and loads
under "Technical data" (Y page 405).
Driving tips Observe the notes on ESP
®
trailer stabilisa-
tion (Y page 76).
The maximum permissible speed for vehicle/ trailer combinations depends on the type of
trailer. Before beginning the journey, check
the trailer's documents to see what the max-imum permitted speed is. Observe the legally
prescribed maximum speed in the relevant
country.
For certain Mercedes-Benz vehicles, the max-
imum permissible rear axle load is increased
when towing a trailer. See the "Technical
data" section to find out whether this applies
to your vehicle. If you utilise any of the added maximum rear axle load when towing a trailer,
the vehicle/trailer combination may not
exceed a maximum speed of 100 km/h for reasons concerning the operating permit.
This also applies in countries in which the
permissible maximum speed for vehicle/
trailer combinations is above 100 km/h.
When towing a trailer, your vehicle's handling characteristics will be different in comparison
to when driving without a trailer and it will
consume more fuel.
Change into a lower gear in good time on long
and steep downhill gradients. For vehicles
with automatic transmission, you need to
have selected manual drive program M
(Y page 177).
This also applies if you have activated cruise
control, SPEEDTRONIC or DISTRONIC PLUS.
This will use the braking effect of the engine,
so less braking will be required to maintain
vehicle speed. This relieves the load on the
brake system and prevents the brakes from
overheating and wearing too quickly. If you
need additional braking, depress the brake
pedal repeatedly rather than continuously.
Briefly depressing the accelerator pedal on
downhill gradients while the manual drive
program Mis temporarily activated (vehicles
with automatic transmission): the automatic
transmission may switch back to the last
active automatic drive program Eor S. The
automatic transmission may shift to a higher
gear. This can reduce the engine's braking
effect.
Driving tips If the trailer swings from side to side:
X Do not accelerate.
X Do not countersteer.
X Brake if necessary.
R Maintain a greater distance to the vehicle in
front than when driving without a trailer.
R Avoid braking abruptly. If possible, brake
gently at first to allow the trailer to run on.
Then, increase the braking force rapidly.
R The values given for gradient-climbing
capabilities from a standstill refer to sea
level. When driving in mountainous areas, Towing a trailer
231Driving and parking Z

note that the power output of the engine,
and consequently the vehicle's gradient-
climbing capability, decrease with increas-
ing altitude. Folding out the ball coupling
G
WARNING
If the ball coupling is not correctly engaged,
the trailer can detach. There is a risk of an
accident.
Always engage the ball coupling as described. G
WARNING
If you release the ball coupling or it does not
engage correctly when folding in, it will swing out. Within pivoting range of the ball coupling,
there is an increased risk of an accident and
injury.
Only release the ball coupling if the pivoting
range is unobstructed. Always make sure that the ball coupling engages when folding in.
Before you can tow a trailer with your vehicle, you must fold out the ball coupling.
The release wheel is located behind the left-
hand side panelling in the luggage compart-
ment. X
To open the cover: turn handle:anti-
clockwise, the fold down and remove
cover ;. X
Pull out release wheel =.
X Turn release wheel =anti-clockwise as far
as it will go.
The ball coupling disengages and folds out
behind the rear bumper. Indicator lamp ?
flashes. X
Pull the ball coupling in the direction of the
arrow until it engages in a vertical position.
The indicator lamp on the release wheel
goes out. The power socket folds down
automatically.
The multifunction display shows the
Check
Check trailer trailer hitch
hitchlock
lockdisplay mes-
sage until the ball coupling is engaged.
X Remove the protective covering from the
ball coupling and store it in a safe place.
X Make sure that the ball of the ball coupling
is clean and that it is either greased or dry
(grease free), depending on the instruc-
tions for the trailer. 232
Towing a trailerDriving an
d parking

The segments between the speed of the
vehicle in front and the stored speed light
up. Rev counter
! Do not drive in the overrevving range.
Doing so will damage the engine.
The red band in the rev counter indicates the
engine's overrevving range.
The engine is limited within a range to protect the engine when the red band is reached. Outside temperature display
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
Bear in mind that the outside temperature
display indicates the measured air tempera-
ture and not the road surface temperature.
The outside temperature display is in the mul- tifunction display (Y page 241).
There is a short delay before a change in out- side temperature appears in the multifunc-
tion display. Coolant temperature gauge
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in the engine compartment, leave the bonnet
closed and notify the fire brigade.
The coolant temperature gauge is in the
instrument cluster on the right-hand side
(Y page 30). Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale. Operating the on-board computer
Overview :
Multifunction display
; Right control panel
= Left control panel
X To activate the on-board computer: turn
the key to position 1in the ignition lock.
You can control the multifunction display and
the settings in the on-board computer using
the buttons on the multifunction steering
wheel. Displays and operation
239On-board computer/Displays 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

R
Activating/deactivating ESP ®
(except
Mercedes-AMG vehicles) (Y page 248)
R Activating/deactivating COLLISION PRE-
VENTION ASSIST PLUS (Y page 249)
R Activating/deactivating ATTENTION
ASSIST (Y page 249)
R Activating/deactivating Blind Spot Assist
(Y page 249)
R Activating/deactivating Lane Keeping
Assist (Y page 249)
Showing the assistance graphic X
Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press 9or: to select Assistance
Assistance
graphic
graphic.
X Press ato confirm.
The assistance graphic shows you the sta-
tus of and/or information from the follow-
ing driving systems or driving safety sys-
tems:
R Traffic Sign Assist (Y page 223)
R DISTRONIC PLUS (Y page 196)
R COLLISION PREVENTION ASSIST PLUS
(Y page 70)
R ATTENTION ASSIST (Y page 222)
R Lane Keeping Assist (Y page 228)
X Press :to display the ATTEN-
TION ASSIST assessment. Traffic Sign Assist In the
Traffic Traffic Sign
SignAssist
Assist menu, you can
switch the Traffic Sign Assist message func-
tion on or off. When the message function is
activated, detected traffic signs and informa-
tion appear in the multifunction display for
five seconds.
X Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
Traffic Sign Assist
Traffic Sign Assist .
X Press ato confirm.
The current selection appears.
X To activate/deactivate the message
function: pressaagain.
Further information about Traffic Sign Assist
(Y page 223).
Deactivating/activating ESP ® Observe the important safety notes on ESP
®
(Y page 73). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
Deactivating/activating ESP ®
on Mercedes-
AMG vehicles (Y page 75).
For further information about ESP ®
, see
(Y page 73).
X Start the engine.
X Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press 9or: to select ESP
ESP. 248
Menus and submenusOn-board computer/
Displays

X
Press ato confirm.
The current selection appears.
X To activate/deactivate: pressa
again.
ESP ®
is deactivated if the åwarning
lamp in the instrument cluster lights up
continuously when the engine is running.
If the ÷ andå warning lamps light up
continuously, ESP ®
is not available due to a
malfunction.
Observe the information on warning lamps
(Y page 297).
Observe the information on display messages
(Y page 258).
Activating/deactivating COLLISION
PREVENTION ASSIST PLUS X
Press the =or; button on the steer-
ing wheel to select the Assist.
Assist. menu.
X Press the 9or: button to select
Collision Prevent. Assist Collision Prevent. Assist.
X Press ato confirm.
The current selection appears.
X To activate/deactivate: pressa
again.
When COLLISION PREVENTION ASSIST
PLUS is deactivated, the æsymbol
appears in the multifunction display in the
assistance graphic display.
For further information about COLLISION
PREVENTION ASSIST PLUS, see (Y page 70).
Activating/deactivating ATTENTION
ASSIST X
Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
Attention Assist
Attention Assist.
X Press ato confirm.
The current selection appears.
X Press ato confirm. X
Press the :or9 button to set Off Off,
Standard Standard orSensitive
Sensitive .
X Press the abutton to save the setting.
When ATTENTION ASSIST is deactivated,
the é symbol appears in the multifunc-
tion display in the assistance graphic dis-
play.
For further information about ATTENTION
ASSIST, see (Y page 222).
Activating/deactivating Blind Spot
Assist X
Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
Blind Spot Assist
Blind Spot Assist.
X Press ato confirm.
The current selection appears.
X To activate/deactivate: pressa
again.
Further information about Blind Spot Assist
(Y page 226).
Activating/deactivating Lane Keeping
Assist X
Press the =or; button on the steer-
ing wheel to select the Assist. Assist.menu.
X Press the 9or: button to select
Lane Keeping Assist
Lane Keeping Assist.
X Press ato confirm.
The current selection appears.
X Press aagain to confirm.
X Press the :or9 button to set Off
Off,
Standard
Standard orAdaptive
Adaptive.
X Press the abutton to save the setting.
When Lane Keeping Assist is activated, the
multifunction display shows the lane mark- ings as bright lines in the assistance
graphic.
For further information about Lane Keeping
Assist, see (Y page 228). Menus and submenus
249On-board computer/Displays Z

X
Press the :or9 button to select the
Dig. speedo [mph]
Dig. speedo [mph] function.
You will see the selected setting: on
onoroff
off.
X Press the abutton to save the setting.
Selecting permanent display
United Kingdom: this function is unavailable.
The Permanent display: Permanent display: function allows
you to choose whether the multifunction dis- play always shows the outside temperature or the speed.
The speed display is inverse to your speed-
ometer.
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Instrument cluster
Instrument cluster submenu.
X Press ato confirm.
X Press the :or9 button to select the
Permanent display: Permanent display: function.
The current setting, outside tempera‐
outside tempera‐
ture
ture orDig. speedo [mph]:
Dig. speedo [mph]:, appears.
X Press the abutton to save the setting.
Lights Switching the daytime driving lights
on/off
The
Daytime driving lights Daytime driving lights function can
only be switched on with the engine turned
off.
X Press the =or; button on the steer-
ing wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Lights
Lights submenu.
X Press ato confirm.
X Press the :or9 button to select the
Daytime driving lights
Daytime driving lights function.
If the Daytime driving lights
Daytime driving lights function
has been switched on, the cone of light and the W symbol in the multifunction dis-
play are shown in orange.
X Press the abutton to save the setting. Further information on daytime driving lights
(Y
page 120).
Vehicle Setting permanent SPEEDTRONIC
You can set permanent SPEEDTRONIC using
the
Limit Limit speed
speed(winter
(winter tyres)
tyres)function.
X Press the =or; button on the steer-
ing wheel to select the Settings
Settingsmenu.
X Press the :or9 button to select the
Vehicle
Vehicle submenu.
X Press ato confirm.
X Press :or9 to select the Limit
Limit
speed (winter tyres):
speed (winter tyres): function.
You will see the current setting.
X Press ato confirm.
X Press the :or9 button to adjust
permanent SPEEDTRONIC in increments of
ten (160 km/h 160 km/h to240 km/h
240 km/h). The Off
Offset-
ting switches permanent SPEEDTRONIC
off.
X Press the abutton to store the entry.
For further information on permanent SPEED- TRONIC (Y page 196).
Activating/deactivating the automatic
locking feature
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Vehicle Vehicle submenu.
X Press ato confirm.
X Press the :or9 button to select the
Automatic door locks
Automatic door locks function.
If the Automatic door locks
Automatic door locks function is
switched on, the multifunction display
shows the doors in orange.
X Press the abutton to save the setting.
If you activate the Automatic door locks
Automatic door locks
function, the vehicle is centrally locked above
a speed of around 15 km/h.
For further information on the automatic lock- ing feature; see (Y page 91). Menus and submenus
251On-board computer/Displays Z