2013 MERCEDES-BENZ CLA belt

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

Display messagesPossible causes/consequences and M SolutionsCollision Preven‐
tion Assist Plus
inoperativeCOLLISION PREVENTION ASSIST PLUS is malfunctioning. The dis-
tance warning signal may also have failed.XVisit a qualified specialist workshop.PRE-SAFE
Function currently
limited See Own‐
er's ManualAdaptive Brake Assist is temporarily inoperative. Possible causes:
R the front bumper is dirty.
R the function is impaired due to heavy rain or snow.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R the system is outside the operating temperature range.
R the on-board voltage is too low.
Once the causes listed above no longer apply, the display message
goes out.
Adaptive Brake Assist is operational again.
If the display message does not disappear:XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XSecure the vehicle against rolling away ( Y page 162).XClean the front bumper ( Y page 291).XRestart the engine.PRE-SAFE
Function limited
See Owner's ManualAdaptive Brake Assist is faulty. The distance warning signal may
also have failed.XVisit a qualified specialist workshop.üIf the symbol appears in the multifunction display, a seat belt
tongue has been inserted into a rear seat belt buckle.
Further information on the status indicator for the rear seat belts
( Y page 49).234Display messagesOn-board computer and displays

Display messagesPossible causes/consequences and M SolutionsýIf the symbol appears in the multifunction display, a seat belt
tongue has not been inserted in a rear seat belt buckle.GWARNING
A seat belt which is not worn correctly, or which has not been
engaged in the seat belt buckle correctly, cannot provide the
intended level of protection.
This poses an increased risk of injury.
XIf necessary, ask the occupants in the rear to fasten their seat
belts ( Y page 48).
Further information on the status indicator for the rear seat belts
( Y page 49).
6
Restraint sys. mal‐
function Consult
workshopThere is a malfunction in the SRS (Supplemental Restraint Sys-
tem). The 6 warning lamp also lights up in the instrument clus-
ter.GWARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XVisit a qualified specialist workshop.
Further information on occupant safety ( Y page 40).
6
Front left malfunc‐
tion Consult work‐
shop  or Front
right malfunction
Consult workshopSRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster.GWARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XVisit a qualified specialist workshop.Display messages235On-board computer and displaysZ

Display messagesPossible causes/consequences and M Solutions6
Rear left-hand
side malfunction
Consult workshop  
or  Rear right-hand
side malfunction
Consult workshopSRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster.GWARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XVisit a qualified specialist workshop.6
Left windowbag mal‐
function Consult
workshop  or Right
windowbag malfunc‐
tion Consult work‐
shopThere is a malfunction in the left-hand and/or right-hand window-
bag. The 6 warning lamp also lights up in the instrument clus-
ter.GWARNING
The left or right windowbag may either be triggered unintentionally
or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XVisit a qualified specialist workshop.
Lights
i Display messages about LEDs:
This display message will only appear if all the LEDs have failed.
Display messagesPossible causes/consequences and M Solutionsb
Left cornering
light  or Right cor‐
nering lightThe left or right-hand cornering light is faulty.XCheck whether you are permitted to replace the bulb yourself
( Y page 114).
or
XVisit a qualified specialist workshop.b
Left dipped beam  
or  Right dipped
beamThe left or right-hand dipped-beam headlamp is faulty.XCheck whether you are permitted to replace the bulb yourself
( Y page 114).
or
XVisit a qualified specialist workshop.236Display messagesOn-board computer and displays

Display messagesPossible causes/consequences and M Solutions?
Coolant Stop car,
turn engine offThe coolant is too hot.
A warning tone also sounds.GWARNING
Never drive with an overheated engine. Driving when your engine
is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire.
Steam from an overheated engine can cause serious burns, which
can occur just by opening the bonnet.
There is a risk of injury.
XStop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.XSecure the vehicle against rolling away ( Y page 162).XWait until the engine has cooled down.XMake sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.XDo not start the engine again until the display message goes out
and the coolant temperature is below 120 †. The engine may
otherwise be damaged.XPay attention to the coolant temperature display.XIf the temperature increases again, visit a qualified specialist
workshop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature may rise to 120 †.
#The battery is not being charged.
A warning tone also sounds.
Possible causes:
R faulty alternator
R torn poly-V-belt
R a malfunction in the electronicsXStop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.XOpen the bonnet.XCheck whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
XConsult a qualified specialist workshop.
If the poly-V-belt is OK:
XVisit a qualified specialist workshop immediately.Display messages241On-board computer and displaysZ

Display messagesPossible causes/consequences and M SolutionsBlind Spot Assist is temporarily inoperative. Possible causes:
R the sensors are dirty.
R the function is impaired due to heavy rain or snow.
R the radar sensor system is outside the operating temperature
range.
R the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
The yellow 9 indicator lamps also light up in the exterior mir-
rors.
Once the causes listed above no longer apply, the display message
goes out.
Blind Spot Assist is operational again.
If the display message does not disappear:XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.XSecure the vehicle against rolling away ( Y page 162).XClean the sensors ( Y page 291).XRestart the engine.Blind Spot Assist
inoperativeBlind Spot Assist is faulty.
The yellow 9 indicator lamps also light up in the exterior mir-
rors.XVisit a qualified specialist workshop.Park Assist cancel‐
ledThe driver's door is open and the driver's seat belt has not been
fastened.XRepeat the parking process with the seat belt fastened and the
driver's door closed.You inadvertently touched the multifunction steering wheel while
steering intervention was active.XWhile steering intervention is active, make sure not to touch the
multifunction steering wheel.The vehicle has started to skid and ESP ®
has intervened.XUse Active Parking Assist again later ( Y page 186).Display messages245On-board computer and displaysZ

Warning and indicator lamps in the instrument cluster
Seat belts
ProblemPossible causes/consequences and M Solutionsü
Only for certain coun-
tries: the red seat belt
warning lamp lights up
for six seconds after
the engine starts.The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.XFasten your seat belt ( Y page 46).ü
Only for certain coun-
tries: the red seat belt
warning lamp lights up
after the engine starts.
In addition, a warning
tone sounds for up to
six seconds.The driver's seat belt is not fastened.XFasten your seat belt ( Y page 46).
The warning tone ceases.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 front passenger has not fastened their seat belt.XFasten your seat belt ( Y page 46).
The warning lamp goes out.There are objects on the front-passenger seat.XRemove 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 front 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.XFasten your seat belt ( Y page 46).
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.XRemove 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.Warning and indicator lamps in the instrument cluster255On-board computer and displaysZ

ProblemPossible causes/consequences and M Solutions!
The red indicator lamp
for the electric parking
brake flashes or is lit
and/or the yellow
warning lamp for the
electric parking brake
is lit.XObserve the additional display messages in the multifunction
display.6
The red SRS warning
lamp is lit while the
engine is running.There is a malfunction in the SRS (Supplemental Restraint Sys-
tem).GWARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This poses an increased risk of injury.
XDrive on carefully.XHave SRS checked at a qualified specialist workshop immedi-
ately.
For further information about the Supplemental Restraint System;
see ( Y page 41).
Warning and indicator lamps in the instrument cluster261On-board computer and displaysZ