2013 MERCEDES-BENZ CLA lock

the vehicle and the trailer drawbar. This poses
a risk of injury.
Do not uncouple a trailer with an engaged
overrun brake.
! Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound-
ing of the overrun brake.
! Remove the installed adapter cable
before folding in the ball coupling. Other-
wise, damage may occur to the rear
bumper and the adapter cable.XMake sure that the transmission is in posi-
tion P.XApply the electric parking brake.XSecure the trailer against rolling away.XRemove the trailer cable and decouple the
trailer.
Folding in the ball coupling
GWARNING
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.
XFold the ball coupling back in if you are not
using the trailer tow hitch.XPlace the protective covering on the ball
coupling.
The release wheel is located behind the left-
hand side trim panel in the boot.
XTo open the cover: turn handle : anti-
clockwise and fold down cover ; and
remove it.XPull out release wheel =.XTurn release wheel = anti-clockwise as far
as it will go.
The ball coupling disengages and folds out
behind the rear bumper. Indicator
lamp ? flashes.Towing a trailer205Driving and parkingZ

XPress the ball coupling in the direction of
the arrow until it engages behind the
bumper.
Indicator lamp ? goes out and the mes-
sage in the multifunction display disap-
pears.
Trailer power supply
! You can connect accessories with a
power rating of up to 240 W to the perma-
nent power supply and with a power rating
of up to 180 W to the power supply that is
switched on via the ignition lock.
The trailer battery may not be charged from
the power supply.
XTo switch the connected power supply
on or off: turn the key in the ignition lock
to position 2 or 0 respectively.
When it leaves the factory, your vehicle's
trailer socket is equipped with a permanent
power supply and a power supply that is
switched on via the ignition lock.
The permanent power supply is supplied via
trailer socket pin 9.
The power supply that is switched on via the
ignition lock is supplied via trailer socket pin
10.
The trailer's permanent power supply is
switched off in the event of low vehicle supply
voltage and after six hours at the latest.
You can find more information about instal-
ling the trailer electrics at a qualified special-
ist workshop.
Bulb failure indicator for LED lamps
i If LED lamps are fitted in the trailer, an
error message may appear in the multi-
function display even if there is no fault. The
reason for the error message could be that
the current has fallen below the minimum
of 50 mA.
To ensure reliable operation of the bulb failure
indicator, each LED chain in the trailer lighting
must be guaranteed a minimum current of
50 mA.
Trailer with 7-pin connector
General notes
Trailers with 7-pin connector: you can
make a connection to the 13-pin connector
on the ball coupling using an adapter plug or,
if necessary, an adapter cable. Both can be
obtained in a qualified specialist workshop.
Fitting the adapter
! Make sure that there is sufficient cable
play so that the cable cannot become
detached when cornering.
! Remove the installed adapter cable
before folding in the ball coupling. Other-
wise, damage may occur to the rear
bumper and the adapter cable.
XOpen the socket cover.XInsert connector with lug : into
groove ; of the socket. Turn the connec-
tor clockwise to the stop.XLet the cover engage.XIf you are using an adapter cable, secure
the cable to the trailer with cable ties.206Towing a trailerDriving and parking

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
GWARNING
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.
GWARNING
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.
You must observe the legal requirements for
the country in which you are currently driving
when operating the on-board computer.
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. Otherwise, a vehicle that is not oper-
ating safely may cause an accident.
For an overview, see the instrument panel
illustration ( Y page 30).
Displays and operation
Instrument cluster lighting
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 on the bottom
left of the instrument cluster ( Y page 30).
XTurn the brightness control knob clockwise
or anti-clockwise.
If the light switch is set to Ã, T or
L , the brightness is dependant upon
the brightness of the ambient light.
i 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.
Coolant temperature gauge
GWARNING
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
service 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.
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
208Displays and operationOn-board computer and displays

At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale.
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 fuel supply is interrupted 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 the
freezing point.
The outside temperature display is in the mul-
tifunction display.
Changes in the outside temperature are dis-
played after a short delay.
Speedometer with segments
The speedometer is divided into segments on
vehicles with DISTRONIC PLUS.
The segments in the speedometer indicate
which speed range is available.
R Cruise control activated ( Y page 168):
The segments light up from the stored
speed to the maximum speed.
R Variable SPEEDTRONIC activated
( Y page 171):
The segments light up from the start of the
scale to the selected limit speed.
R DISTRONIC PLUS activated ( Y page 173):
One or two segments in the set speed
range light up.
R DISTRONIC PLUS detects a vehicle in front:
The segments between the speed of the
vehicle in front and the stored speed light
up.
Operating the on-board computer
Overview:Multifunction display;Switches on LINGUATRONIC; see the sep-
arate operating instructions=Right control panel?Left control panelABack buttonXTo activate the on-board computer: turn
the key to position 1 in 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 operation209On-board computer and displaysZ

This function is only available on vehicles with
the Intelligent Light System.
For further information about Adaptive High-
beam Assist, see ( Y page 111).
Setting the brightness of the ambient
lightingXPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Light submenu.XPress a to confirm.XPress the : or 9 button to select the
Amb. light +/- function.
You will see the selected setting.XPress a to confirm.XPress the : or 9 button to adjust the
brightness to any level from Off toLevel
5 (bright) .XPress the a or % button to save the
setting.
Activating/deactivating the surround
lighting and exterior lighting delayed
switch-off
If you have activated the Surround light‐
ing function and the light switch is set to
à , the following functions are activated
when it is dark:
R surround lighting: the exterior lighting
remains lit for 40 seconds after unlocking
with the key. If you start the engine, the
surround lighting is switched off and auto-
matic headlamp mode is activated
( Y page 107).
R exterior lighting delayed switch-off: the
exterior lighting remains lit for
60 seconds after the engine is switched off.
If you close all the doors and the boot lid,
the exterior lighting goes off after
15 seconds.
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Light submenu.XPress a to confirm.XPress the : or 9 button to select the
Surround lighting function.
When the Surround lighting function is
activated, the light cone and the area
around the vehicle are displayed in red in
the multifunction display.XPress the a button to save the setting.
Deactivating delayed switch-off of the exte-
rior lighting temporarily:
XBefore leaving the vehicle, turn the key to
position 0 in the ignition lock.XTurn the key to position 2 in the ignition
lock.
The exterior lighting delayed switch-off is
deactivated.
Delayed switch-off of the exterior lighting is
reactivated the next time you start the
engine.
i Depending on your vehicle's equipment,
when the surround lighting and delayed
switch-off exterior lighting are on, the fol-
lowing light up:
R Side lamps
R Foglamps
R Dipped-beam headlamps
R Daytime driving lights
R Surround lighting in the exterior mirrors
Activating/deactivating the interior light-
ing delayed switch-off
If you activate the Lighting delayed sw.
off function, the interior lighting remains on
for 20 seconds after you remove the key from
the ignition lock.
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Light submenu.XPress a to confirm.222Menus and submenusOn-board computer and displays

XPress the : or 9 button to select the
Lighting delayed sw. off: function.
When the Light. delay function is acti-
vated, the vehicle interior is displayed in
red in the multifunction display.XPress the a button to save the setting.
Vehicle
Setting permanent SPEEDTRONIC
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Vehicle submenu.XPress a to confirm.XPress the : or 9 button to select the
Limit speed (winter tyres): function.
You will see the current setting.XPress a to confirm.XPress the : or 9 button to adjust
permanent SPEEDTRONIC in increments of
ten ( 240 km/h to 160 km/h ). The Off set-
ting switches permanent SPEEDTRONIC
off.XPress the a button to store the entry.
Using the Speed limit (winter tyres)
function, you can set permanent SPEED-
TRONIC ( Y page 173).
Switching the automatic locking feature
on/off
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Vehicle submenu.XPress a to confirm.XPress the : or 9 button to select the
Auto. door lock function.
When the Auto. door locks function is
activated, the vehicle doors are displayed
in red in the multifunction display.XPress the a button to save the setting.If you select the Auto. door locks function,
the vehicle is centrally locked above a speed
of around 15 km/h.
i For further information on the automatic
locking feature; see ( Y page 83).
Activating/deactivating the acoustic
locking confirmation
If you switch on the Acoustic Lock function,
an acoustic signal sounds when you lock the
vehicle.XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Vehicle submenu.XPress a to confirm.XPress the : or 9 button to select the
Acoustic Lock function.
If the Acoustic Lock function is activated,
the & symbol in the multifunction dis-
play lights up red.XPress the a button to save the setting.
Activating/deactivating the radar sensor
system
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Vehicle submenu.XPress a to confirm.XPress the 9 or : button to select
Radar sensor (See Owner's Man.) .
You will see the selected setting: on or
off .XPress the a button to save the setting.
Heating
Changing the departure time
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select
the Heating submenu.Menus and submenus223On-board computer and displaysZ

XPress a to confirm.
You will see the selected setting.XPress a to confirm.XPress the : or 9 button to select A,
B or Change C .XPress a to confirm.
You can now change the departure time.XPress the = or ; button to select the
display to be changed: hours, minutes.XPress the : or 9 button to set the
selected display.XPress the a button to store the entry.
The yellow indicator lamp on the auxiliary
heating button lights up.
Selecting the departure time or deactivat-
ing a selected departure time
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Heating submenu.XPress a to confirm.
You will see the selected setting.XPress a to confirm.XPress : or 9 to select one of the
three departure times or Timer off (no
timer active).XPress a to confirm.
If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary
heating button.
Changing the departure time
Only vehicles with auxiliary heating
( Y page 136) have this function.
In the 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 THERMATIC 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.GDANGER
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.
GWARNING
When the auxiliary heating is switched on,
parts of the vehicle can become very hot.
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with
hot parts of the exhaust system for extended
periods. There is a risk of fire.
When the auxiliary heating is switched on,
make sure that no flammable material can
come into contact with hot vehicle compo-
nents.
! 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.
i Switch the auxiliary heating on regularly
once a month for about ten minutes.
224Menus and submenusOn-board computer and displays

Convenience
Switching belt adjustment on/off
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Convenience submenu.XPress a to confirm.XPress the : or 9 button to select the
Belt adjustment function.
When the Belt adjustment function is
activated, the vehicle seat belt is displayed
in red in the multifunction display.XPress the a button to save the setting.
For further information on belt adjustment,
see ( Y page 48).
Switching the fold in mirrors when lock-
ing function on/off
This function is only available on vehicles with
a memory function ( Y page 103).
XPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Convenience submenu.XPress a to confirm.XPress the : or 9 button to select the
Auto. fold-in mirrors.
You will see the selected setting.XPress the a button to save the setting.
If you switch on the Auto. fold-in mir‐
rors function, the exterior mirrors fold in
when you lock the vehicle. 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 the function on and you
fold the exterior mirrors in using the button
on the door ( Y page 101), they will not fold
out automatically. The exterior mirrors can
then only be folded out using the button on
the door.
Restoring the factory settingsXPress the = or ; button on the steer-
ing wheel to select the Settings menu.XPress the : or 9 button to select the
Factory setting submenu.XPress a to confirm.
The Reset all settings? message
appears.XPress the : or 9 button to select
No or Yes .XPress the a button to confirm the selec-
tion.
If you have selected Yes , the multifunction
display shows a confirmation message.
For safety reasons, not all functions are reset:
the Limit speed (winter tyres): func-
tion in permanent SPEEDTRONIC can only be
set in the VEHICLE submenu. If you want to
reset the Daytime driving lights: in the
Light submenu, you must turn the key in the
ignition lock to position 1.
Menus and submenus225On-board computer and displaysZ