lock MERCEDES-BENZ A-CLASS HATCHBACK 2015 Owners 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

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). Important safety notes
G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while driving will distract you from traffic con-
ditions. You could then lose control of the
vehicle. There is a risk of an accident.
Only operate these devices if road traffic con-
ditions permit. If you are unsure about the
surrounding conditions, pull over to a safe
location and make entries only while the vehi-
cle is stationary.
You must observe the legal requirements for
the country in which you are currently driving when operating the on-board computer. G
WARNING
If the instrument cluster has failed or mal-
functioned, you may not recognise function
restrictions relevant to safety. The operating
safety of your vehicle may be impaired. There is a risk of an accident.
Drive on carefully. Have the vehicle checked
at a qualified specialist workshop immedi-
ately.
The on-board computer only shows messages
or warnings from certain systems in the mul- tifunction display. You should therefore make
sure your vehicle is operating safely at all
times. If the operating safety of your vehicle is
impaired, park the vehicle safely as soon as
possible. Contact a qualified specialist work-
shop.
For an overview, see the instrument panel
illustration (Y
page 30). Displays and operation
Instrument cluster lighting
The light sensor in the instrument cluster
automatically controls the brightness of the
multifunction display. In daylight, the displays
in the instrument cluster are not illuminated.
The lighting in the instrument cluster, in the
displays and the controls in the vehicle inte-
rior can be adjusted using the brightness con-
trol knob.
The brightness control knob is located on the bottom left of the instrument cluster
(Y page 30).
X Turn the brightness control knob clockwise
or anti-clockwise.
If the light switch is set to the Ã,Tor
L position, the brightness is dependent
upon the brightness of the ambient light. Speedometer with segments
The speedometer is divided into segments
only on vehicles with DISTRONIC PLUS.
The segments in the speedometer indicate
which speed range is available.
R Variable SPEEDTRONIC activated
(Y page 194):
The segments light up from the start of the
scale to the selected limit speed.
R DISTRONIC PLUS activated (Y page 196):
One or two segments in the set speed
range light up.
R DISTRONIC PLUS detects a vehicle in front
moving more slowly than the stored speed: 238
Displays and operationOn-board computer/Displays

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

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

Activating/deactivating the acoustic
locking confirmation
If you switch on the Acoustic
Acoustic Lock Lockfunction,
an acoustic signal sounds when you lock the
vehicle.
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
Acoustic Lock
Acoustic Lock function.
If the Acoustic
Acoustic Lock
Lockfunction is activated,
the & symbol in the multifunction dis-
play lights up orange.
X Press the abutton to save the setting.
Heating Auxiliary heating departure time
G
DANGER
If the exhaust pipe is blocked or sufficient
ventilation is not possible, toxic exhaust
fumes can enter the vehicle, especially car-
bon monoxide. This is the case, e.g. in
enclosed spaces, or if the vehicle is stuck in
snow. There is a risk of fatal injuries.
You should switch off the auxiliary heating in
enclosed spaces which do not have an extrac- tion system, e.g. a garage. If the vehicle is
stuck in snow and you must leave the auxiliary
heating running, keep the exhaust pipe and
the area around the vehicle clear of snow. To guarantee a sufficient supply of fresh air, open
a window on the side of the vehicle away from the wind. G
WARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable materials such as leaves, grass or twigs may ignite if they come into contact
with:
R hot parts of the exhaust system
R the exhaust gas itself There is a risk of fire.
When the auxiliary heating is switched on,
make sure that:
R no flammable materials come into contact
with hot vehicle components
R the exhaust gas can escape from the
exhaust pipe unhindered
R the exhaust gas does not come into contact
with flammable materials.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for a longer
distance.
Only vehicles with auxiliary heating have this
function.
In the Heating
Heating submenu, you can select a
stored departure time or change a departure time.
The auxiliary heating timer function calcu-
lates the switch-on time according to the out-
side temperature so that the vehicle is pre-
heated by the departure time. When the
departure time is reached, the auxiliary heat-
ing continues to heat for a further five
minutes and then switches off. The auxiliary
heating adopts the set air conditioning or
THERMOTRONIC temperature setting.
You can switch off the auxiliary heating by
using the remote control or the auxiliary heat- ing button on the centre console.
i Switch the auxiliary heating on regularly
once a month for about ten minutes.
Further information on auxiliary heating
(Y page 148).
Selecting the departure time or deactivat-
ing a selected departure time
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Heating Heating submenu.
X Press ato confirm.
The current setting appears. 252
Menus and submenusOn-board computer/Displays

X
Press aagain.
X Press the :or9 button to select
one of the three departure times or Timer
Timer
off
off (no timer active).
X Press ato confirm.
If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary
heating button.
Changing the departure time
X Press the =or; button on the steer-
ing wheel to select the Settings
Settings menu.
X Press the :or9 button to select the
Heating Heating submenu.
X Press ato confirm.
The current setting appears.
X Press the :or9 button to select
Change A
Change A, Change B
Change BorChange C
Change C.
X Press ato confirm.
You can now change the departure time.
X Press the =or; button to select the
display to be changed: hours, minutes.
X Press the :or9 button to set the
selected display.
X Press the abutton to store the entry.
The yellow indicator lamp on the auxiliary
heating button lights up.
Comfort Switching belt adjustment on/off
X Press the =or; button on the steer-
ing wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Convenience
Convenience submenu.
X Press ato confirm.
X Press the :or9 button to select the
Belt adjustment
Belt adjustment function.
When the Belt adjustment
Belt adjustment function is
activated, the seat belt is displayed in
orange in the multifunction display.
X Press the abutton to save the setting.
For further information on belt adjustment,
see (Y page 45). Switching the fold mirrors in when lock-
ing function on/off
This function is only available when the vehi-
cle is equipped with the electrical fold-in func-
tion.
When you activate the Auto. Auto.fold-in fold-in mir‐
mir‐
rors
rors function, the exterior mirrors are folded
in when the vehicle is locked. When you
unlock the vehicle and then open the driver's or front-passenger door, the exterior mirrors
fold out again.
If you have switched on the Auto. Auto.fold-in
fold-in
mirrors
mirrors function and you fold in the exterior
mirrors using the button on the door
(Y page 114), they will not fold out automat-
ically. The exterior mirrors can then only be
folded out using the button on the door.
X Press the =or; button on the steer-
ing wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Convenience
Convenience submenu.
X Press ato confirm.
X Press the :or9 button to select the
Auto. fold-in mirrors
Auto. fold-in mirrors function.
If the Auto.
Auto. fold-in
fold-in mirrors
mirrorsfunction is
switched on, the multifunction display
shows the exterior mirror in orange.
X Press the abutton to save the setting.
Resetting to factory settings X
Press the =or; button on the steer-
ing wheel to select the Settings Settingsmenu.
X Press the :or9 button to select the
Factory setting
Factory setting submenu.
X Press ato confirm.
The Reset all settings?
Reset all settings? function
appears.
X Press the :or9 button to select No
No
or Yes
Yes.
X Press the abutton to confirm the selec-
tion.
If you have selected Yes Yes, the multifunction
display shows a confirmation message. Menus and submenus
253On-board computer/Displays Z

For safety reasons, not all functions are reset:
the Limit
Limit speed
speed(winter
(winter tyres)
tyres)function
in permanent SPEEDTRONIC can only be set
in the Vehicle
Vehicle submenu.
If you want to reset the Daytime driving
Daytime driving
lights
lights function in the Lights
Lights submenu, you
must turn the key to position 1in the ignition
lock. AMG menu (Mercedes-AMG vehicles)
WARMUP :
Digital speedometer
; Gear indicator
= Upshift indicator
? Engine oil temperature
A Coolant temperature
B Transmission oil temperature
X Press the =or; button on the steer-
ing wheel to select the AMG
AMG menu.
Upshift indicator: upshift indicatorUP
UP=
indicates that the engine has reached the
overrevving range when in the manual drive
program.
Engine and transmission oil tempera-
ture: when the engine and transmission
are at normal operating temperature, oil
temperature ?and Bare displayed in
white in the multifunction display.
If the multifunction display shows oil tem-
perature ?orB in blue, the engine or the
transmission are not yet at normal operat-
ing temperature. Avoid using the full output
of the engine during this time. SETUP :
Drive system Comfort Comfort/Sport
Sport/Sport +Sport+
; Suspension Comfort
Comfort/SportSport/Sport +
Sport +
= Transmission D
D/MM
? ESP ®
On
On/ Off
Off or SPORT handling mode
Sport
Sport
SETUP displays the following information and
functions:
R the digital speedometer
R the gear indicator
R the drive system setting
R the suspension mode
R the transmission position
R the ESP ®
(Electronic Stability Program) sta-
tus
X Press the =or; button on the steer-
ing wheel to select the AMG
AMGmenu.
X Press 9repeatedly until SETUP
appears.
RACETIMER Displaying and starting the RACETIMER
:
Lap
; RACETIMER
The RACETIMER is only intended for use on a closed race circuit. Do not use the function on
public roads. 254
Menus and submenusOn-board computer/Displays

You can start the RACETIMER when the
engine is running or if the key is in position 2
in the ignition lock.
X Press the =or; button on the steer-
ing wheel to select the AMG
AMG menu.
X Press the 9button repeatedly until the
RACETIMER appears.
X To start: press the abutton to start the
RACETIMER.
Displaying the intermediate time X
Press the =or; button to select
Interm. Time
Interm. Time .
X Press ato confirm.
The intermediate time is shown for five sec-
onds.
Starting a new lap :
RACETIMER
; Fastest lap time (best lap)
= Lap
X Press ato confirm New Lap
New Lap.
i A maximum of 16 laps may be stored. The
16th lap can only be completed with Fin‐
Fin‐
ish Lap
ish Lap. Stopping the RACETIMER X
Press the %button on the steering
wheel.
X Confirm Yes
Yeswith a.
The RACETIMER interrupts timing if you stop
the vehicle and turn the key to position 1in
the ignition lock. If you turn the key to position
3 and then press ato confirm Start Start, tim-
ing is continued.
Resetting the current lap
X Stop the RACETIMER.
X Press the =or; button to select
Reset Lap Reset Lap.
X Press ato reset the lap time to "0".
Deleting all laps If you switch off the engine, the RACETIMER is
reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If
you have stopped 16 laps, the current lap
does not have to be reset.
X Reset the current lap.
X Press ato confirm Reset
Reset.
Reset Race Timer? Reset Race Timer? appears in the multi-
function display.
X Press the :button to select Yes
Yesand
press the abutton to confirm.
All laps are deleted. Menus and submenus
255On-board computer/Displays Z

Safety systems
Display messages
Possible causes/consequences and
M
MSolutions !÷
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual Manual ABS (Anti-lock Braking System), BAS (Brake Assist System), ESP
®
(Electronic Stability Program), ESP ®
trailer stabilisation, the HOLD
function, hill start assist and PRE-SAFE ®
are temporarily unavail-
able.
The adaptive brake lights and COLLISION PREVENTION ASSIST
PLUS may also have failed.
In addition, the !,÷andå warning lamps may light up
in the instrument cluster.
ATTENTION ASSIST is deactivated.
Possible causes:
R Self-diagnosis is not yet complete
R The on-board voltage may be insufficient.
G WARNING
The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Carefully drive on a suitable stretch of road, making slight steer-
ing movements, at a speed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
X Drive on carefully.
X Consult a qualified specialist workshop immediately. !÷
inoperative See inoperative See
Owner's Manual Owner's Manual ABS, BAS, ESP
®
, ESP ®
trailer stabilisation, the HOLD function, hill
start assist and PRE-SAFE ®
are not available due to a malfunction.
The adaptive brake lights and COLLISION PREVENTION ASSIST
PLUS may also have failed.
The !, ÷, åandJ warning lamps may also light up
in the instrument cluster.
ATTENTION ASSIST is deactivated.
G WARNING 258
Display messagesOn-board computer/Displays

Display messages
Possible causes/consequences and
M
MSolutions The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec- ted. The braking distance may increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Drive on carefully.
X Consult a qualified specialist workshop immediately. ÷
currently unavail‐ currently unavail‐
able See Owner's able See Owner's
Manual Manual ESP
®
, ESP ®
trailer stabilisation, BAS, the HOLD function, hill start
assist and PRE-SAFE ®
are temporarily unavailable.
The adaptive brake lights and COLLISION PREVENTION ASSIST
PLUS may also have failed.
In addition, the ÷andå warning lamps may light up in the
instrument cluster.
ATTENTION ASSIST is deactivated.
The self-diagnosis function, for example, may not be complete.
G WARNING
The brake system continues to function normally, but without the functions listed above.
The braking distance may thus increase in an emergency braking
situation.
If ESP ®
is not operational, ESP ®
is unable to stabilise the vehicle.
There is an increased danger of skidding and risk of an accident.
X Carefully drive on a suitable stretch of road, making slight steer-
ing movements at a speed above 20 km/h.
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
X Drive on carefully.
X Consult a qualified specialist workshop immediately. Display
messages
259On-board computer/Displays Z