2016 MERCEDES-BENZ CLA-Class ron

Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavail‐
able See Opera‐
tor's Manual
ABS (Anti-lock Braking System), BAS (Brake Assist), ESP®(Elec-
tronic Stability Program), the HOLD function and hill start assist
are temporarily unavailable.
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 are:
RSelf-diagnosis is not yet complete.
RThe on-board voltage may be insufficient.
GWARNING
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 in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XCarefully drive a short distance on a suitable stretch of road,
making slight steering movements at a speed above 12 mph
(20 km/h).
If the display message disappears, the functions mentioned
above are available again.
If the multifunction display still shows the display message:
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
!÷
Inoperative See
Operator's Manual
ABS, BAS, ESP®, the HOLD function and hill start assist are not
available due to a malfunction.
COLLISION PREVENTION ASSIST PLUS may also have failed.
The !, ÷,åand$ (USA only) or J(Canada only)
warning lamps in the instrument cluster may also light up.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
228Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
÷
Inoperative See
Operator'sManual
ES P®,BAS, th eHOLD function and hill start assist are unavailable
due to amalfunction .
COLLISION PREVENTION ASSIST PLU Smay also hav efailed.
In addition ,th e÷ andå warnin glamp smay ligh tup in th e
instrumen tcluster.
ATTENTION ASSIST is deactivated.
GWARNIN G
The brakesystem continues to function normally, but without th e
function slisted above.
The brakin gdistanc ein an emergenc ybrakin gsituation can thus
increase .
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increase dris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
T!
÷
Inoperative See
Operator' sManual
EB D(electronic brak eforc edistribution), ABS, BAS, ES P®,th e
HOLD function and hill start assist are no tavailable due to amal-
function .
COLLISION PREVENTION ASSIST PLU Smay also hav efailed.
A warnin gtone sounds.
In addition ,th e÷, åand! warnin glamp smay ligh tup
in th einstrumen tcluster.
GWARNIN G
The brakesystem continues to function normally, but without th e
function slisted above. The fron tand rear wheels could therefore
loc kif you brak ehard, fo rexample.
The steerabilit yand brakin gcharacteristics may be severely affec -
ted. The brakin gdistanc ein an emergenc ybrakin gsituation can
increase .
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increase dris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
230Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
The redF(USAonly) or !(Canada only) indicato rlamp
flashes and th eyello w! warnin glamp lights up.
The electric parkin gbrak eis malfunctioning.
To release:
XSwitc hof fth eignition and tur nit bac kon .
XReleas eth eelectric parkin gbrak emanually.
To apply:
XSwitc hof fth eignition and tur nit bac kon .
XApply th eelectric parkin gbrak emanually.
If th ered F (USAonly) or !(Canada only) indicato rlamp
continues to flash:
XDo no tdrive on .
XSecureth evehicl eagainst rollin gaway (Ypage 352).
XShift th etransmissio nto position P.
XTurnth efron twheels toward sth ecurb.
XConsult aqualified specialist workshop .
The yellow! warnin glamp lights up. The red F(USAonly)
or ! (Canada only) indicato rlamp flashes fo rabout te nsec -
onds after th eelectric parkin gbrak ehas been applied or released.
It then goe sout or remain slit .
The electric parkin gbrak eis malfunctioning.
XSwitc hof fth eignition and tur nit bac kon .
XApply th eelectric parkin gbrake.
If it is no tpossibl eto engage th eelectric parkin gbrake:
XShift th etransmissio nto position P.
XVisitaqualified specialist workshop .
If it is no tpossibl eto release th eelectric parkin gbrak emanually:
XReleas eth eelectric parkin gbrak eautomatically (Ypage 171).
If th eelectric parkin gbrak estill canno tbe released:
XConsult aqualified specialist workshop .
232Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Collision Preven‐
tionAssist Plu s
Inoperative
COLLISION PREVENTION ASSIST PLU Sis temporarily inoperative
due to amalfunction .Adaptive Brake Assis tmay also hav efailed.
XVisit aqualified specialist workshop immediately.
Radar Sensor s
Dirty See Opera‐
tor's Manual
At leaston eof th efollowing drivin gsystems or drivin gsafet ysys-
tems is temporarily restricted or inoperative:
RCOLLISION PREVENTION ASSIST PLU S
RDISTRONIC PLUS
Possibl ecauses are:
Rth esensor sin th eradiato rtrim and/o rin th ebumpers are dirty
Rth efunction of th edrivin gsystem and/o rdrivin gsafet ysystem
is impaire ddue to heav yrain or snow.
A warnin gtone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears. Al ldrivin gsystems and drivin gsafet ysystems
are operative again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 169).
XSwitchof fth eengine.
XClean th esensor sin th efollowing location s (Ypage 305):
Rin theradiato rtrim
Rin th efron tbumper
Rin th erear bumper, particularl yin th emiddle of th erear
bumper
XRestart th eengine.
The display message disappears.
6
SRS Malfunction
Servic eRequired
The restrain tsystem is faulty. The 6warnin glamp also lights
up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th eevent of an accident, may no tbe
triggered .
There is an increase dris kof injury.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th erestrain tsystem, see
(
Ypage 42) .
Display messages235
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
6
FrontLeftMalfunc‐
tionServic e
RequiredorFront
Right Malfunction
Servic eRequired
The restrain tsystem has malfunctioned at th efron ton th elef tor
right .The 6 warnin glamp also lights up in th einstrumen tclus-
ter.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th eevent of an accident, may no tbe
triggered .
There is an increase dris kof injury.
XVisit aqualified specialist workshop immediately.
6
Rea rLef tMalfunc‐
tio nServic e
RequiredorRea r
Right Malfunction
Servic eRequired
The rear left-han dor right-hand restrain tsystem has malfunc -
tioned. The 6warnin glamp also lights up in th einstrumen t
cluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in th eevent of an accident, may no tbe
triggered .
There is an increase dris kof injury.
XVisit aqualified specialist workshop immediately.
6
Lef tSid eCurtai n
AirbagMalfunction
ServiceRequired
or Right Sid eCur ‐
tainAirbag Mal ‐
function Servic e
Required
There isamalfunction in th eleft-han dor right-hand window cur -
tai nair bag. The 6warnin glamp also lights up in th einstrumen t
cluster.
GWARNIN G
The leftor right window curtai nair bag may either be triggered
unintentionally or, in th eevent of an accident, may no tbe trig-
gered.
There is an increase dris kof injury.
XVisit aqualified specialist workshop immediately.
236Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Front Passenger
Airbag Disabled
SeeOperator'sMan‐
ual
The front-passenger air bag and front-passenger knee bag are
deactivated during th ejourney, although:
Ran adult
or
Raperson of th ecorrespondin gstature is on th efront-passenger
seat
If additional forces are applied to th eseat ,th esystem may inter-
pre tth eoccupant's weight as lowe rthan it actually is.
GWARNIN G
The front-passenger fron tair bag and fron tpassenger knee bag
may no tbe triggered in th eevent of an accident.
There is an increase dris kof injury.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 169).
XSwitchth eignition off.
XHav eth eoccupant get out of th evehicle.
XKee pth eseat unoccupied ,close th efront-passenger doo rand
switch on th eignition .
XObserveth ePASSENGER AI RBA Gindicato rlamp sin th ecenter
console and th emultifunction display and chec kth efollowing :
Seat unoccupied and ignition switched on :
Raself-diagnosi sis carrie dout .The PASSENGER AI RBA GOF F
and PASSENGER AI RBA GON indicato rlamp smus tligh tup
simultaneousl yfo rapproximately six s
econds
RthePASSENGER AI RBA GOF Findicato rlamp mus tthen ligh t
up and remain lit after th eself-diagnosis. If th eindicato rlamp
is on ,OCS (Occupant Classification System) has disabled th e
front-passenger fron tair bag and front-passenger knee bag
(
Ypage 51)
Rth eFront Passenger Air Bag Enable dSee Opera‐
tor's Manualor Front Passenger Air Bag Disabled
See Operator' sManualdisplay message smus tno tbe
shown in th emultifunction display
XWait fo r aperiod of at leas t60 seconds until th enecessar ysys-
te m checks hav ebeen completed.
XMak esur ethat th edisplay message sdo no tappea rin th emul-
tifunction display.
If these condition sare fulfilled ,th efront-passenger seat can be
occupied again .Whether th ePASSENGER AI RBA GOF For ON
Display messages23 7
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
indicatorlamp remain slit or goe sout depend son how OCS clas-
sifies th eoccupant .
If th econdition sare no tfulfilled ,th esystem is no toperating cor-
rectly.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th eOccupant Classification System,
see (
Ypage 51) .
Front Passenger
AirbagEnabledSee
Operator' sManual
The front-passenger air bag and front-passenger knee bag are
enabled during th ejourney, eve nthough :
Rachild, asmall adult or an objec tweighin gless than th esys-
tem' sweight threshold is locate don th efront-passenger seat
or
Rth efront-passenger seat is unoccupied
The system may detec tobjects or forces applying additional
weight on th eseat .
GWARNIN G
The front-passenger fron tair bag and front-passenger knee bag
may be triggered unintentionally.
There is an increase dris kof injury.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XSecur eth evehicl eagainst rollin gaway (Ypage 169).
XSwitchth eignition off.
XOpe nth efront-passenger door.
XRemove th echild and th echild restrain tsystem from th efront-
passenger seat .
XMakesur ethat there are no objects on th eseat addin gto th e
weight .
The system may otherwise detec tth eadditional weight and
interpret th eseat occupant's weight as greate rthan it actually
is.
XKee pth eseat unoccupied ,close th efront-passenger doo rand
switch on th eignition .
XObserveth ePASSENGER AI RBA Gindicato rlamp sin th ecenter
console and th emultifunction display and chec kth efollowing :
238Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Seat unoccupied and ignition switched on :
Raself-diagnosi sis carrie dout .The PASSENGER AI RBA GOF F
and PASSENGER AI RBA GON indicato rlamp smus tligh tup
simultaneousl yfo rapproximately six seconds
Rth ePASSENGER AI RBA GOF Findicato rlamp mus tthen ligh t
up and remain lit after th eself-diagnosis. If th eindicato rlamp
is on ,OCS has deactivated th efront-passenger fron tair bag
and front-passenger knee bag (
Ypage 51)
RtheFront Passenger Air Bag Enable dSee Opera‐
tor's Manualor Front Passenger Air Bag Disabled
See Operator' sManualdisplay message smus tno tbe
shown in th emultifunction display
XWait fo r aperiod of at leas t60 seconds until th enecessar ysys-
te m checks hav ebeen completed.
XMak esur ethat th edisplay message sdo no tappea rin th emul-
tifunction display.
If these condition sare fulfilled ,th efront-passenger seat can be
occupied again .Whether th ePASSENGER AI RBA GOF For ON
indicato rlamp remain slit or goe sout depend son how OCS clas-
sifies th eoccupant .
If th econdition sare no tfulfilled ,th esystem is no toperating cor-
rectly.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th eOccupant Classification System,
see (
Ypage 51).
Lights
i
Vehicles wit hLE Dbulbs in th eligh tclusters :
The display message fo rth ecorrespondin glamp only appears when all of th eLEDs in th e
lamp hav efailed.
Display messages23 9
On-board computer and displays
Z