2016 MERCEDES-BENZ GLE-Class brake light

XEstablish the electrical connection between
the vehicle and the trailer.
XCheck that the trailer lighting system is work-
ing.
XPush the combination switch upwards/down-wards and check whether the corresponding
turn signal on the trailer flashes.
A trailer that is connected is recognized only
when the electrical connection is established
correctly and when the lighting system is work-
ing properly. The function of other systems also
depends on this, for example:
RESP®
RPARKTRONIC
RActive Parking Assist
RActive Blind Spot Assist
RActive Lane Keeping Assist
iVehicles with the AIRMATIC package: if you
couple up a trailer, the vehicle always remains
at normal level. When coupling up a trailer,
please observe the following:
RIf the normal level has not been set man-
ually, the vehicle is automatically lowered
to normal level. This is the case if a speed of
5 mph (8 km/h) is reached.
RThe Sport drive program is not available.
These restrictions apply to all accessories
powered through a connection to the trailer
power socket of your vehicle, e.g. a bicycle
carrier.
Observe the maximum permissible trailer
dimensions (width and leng
th).
Most U.S. states and all Canadian provinces
require by law:
RSafety chains between the towing vehicle and
the trailer. The chains should be cross-wound
under the trailer drawbar. They must be fas-
tened to the vehicle's trailer coupling, not to
the bumper or the axle.
Leave enough play in the chains to make tight
cornering possible.
RA separate brake system for certain types of
trailer.
RSafety switch for braked trailers. Check the
specific legal requirements applicable to your
state.
If the trailer becomes detached from the tow-
ing vehicle, the safety switch applies the
trailer brakes.
Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed restric- tions. Make sure that your car/trailer combina-
tion complies with the local regulations:
Rin your place of residence
Rin the location to which you are driving
The police and local authorities can provide reli- able information.
Observe the following when towing a trailer:
RTo gain driving experience and to become
accustomed to the new handling characteris-
tics, you should practice the following in a
traffic-free location:
-cornering
-stopping
-backing up
RBefore driving, check:
-trailer tow hitch
-safety switch for braked trailers
-safety chains
-electrical connections
-lights
-wheels
RAdjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
RIf the trailer has electronically controlled
brakes, pull away carefully. Brake manually
using the brake controller and check whether
the brakes function correctly.
RSecure any objects on the trailer to prevent
the cargo from slipping when the vehicle is in
motion.
RWhen you couple up a trailer, check at regular
intervals that the load is firmly secured. If the
tra
iler is equipped with trailer lights and
brakes, check the trailer to ensure that these
are working.
RBear in mind that the handling will be less
stable when towing a trailer than when driving
without one. Avoid sudden steering move-
ments.
RThe vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering.
260Towing a trailer
Driving an d parking

Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavaila‐ble See Operator'sManual
ABS (Anti-lock Brake System), BAS (Brake Assist), ESP®(Electronic
Stability Program), ESP®trailer stabilization, PRE‑ SAFE®, the HOLD
function, hill start assist, Crosswind Assist, STEER CONTROL, Active
Lane Keeping Assist and Active Blind Spot Assist are temporarily
unavailable.
COLLISION PREVENTION ASSIST PLUS, BAS PLUS with Cross-Traffic
Assist, PRE ‑SAFE
®PLUS and PRE ‑SAFE®Brake may also have failed.
In addition, the ÷,åand! warning lamps 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 affected.
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 suitable distance, making slight steering move-
ments 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 SeeOperator's Manual
ABS, BAS, ESP®, ESP®trailer stabilization, PRE‑ SAFE®, the HOLD
function, hill start assist, Crosswind Assist, STEER CONTROL, Active
Lane Keeping Assist and Active Blind Spot Assist are unavailable due
to a malfunction.
COLLISION PREVENTION ASSIST PLUS, BAS PLUS with Cross-Traffic
Assist, PRE ‑SAFE
®PLUS and PRE‑SAFE®Brake may also have failed.
The $ (USA only) or J(Canada only), ÷,åand!
warning lamps in the instrument cluster 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.
The steerability and braking characteristics may be severely affected.
The braking distance in an emergency braking situation can increase.
Display messages281
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
If ESP®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increased ris kof skiddin gand an accident.
XDrive on carefully.
XVisit aqualified specialist workshop immediately.
÷
Currently Unavaila‐ble See Operator' sManual
ESP®,ES P®trailer stabilization ,BAS, PRE ‑SAFE®, th eHOLD function ,
hill start assist ,Crosswin dAssist, STEE RCONTROL, Active Lan e
Keepin gAssis tand Active Blind Spot Assis tare unavailable due to a
malfunction .
COLLISION PREVENTION ASSIST PLUS, BA SPLU Swit hCross-Traffic
Assist, PRE ‑S AF E
®PLU Sand PRE ‑SAFE®Brake may also hav efailed.
In addition ,th e÷ andå warning lamp sligh tup in th einstru-
men tcluster.
The self-diagnosis function might no tbe complete, for example.
ATTENTION ASSIST is deactivated.
GWARNIN G
The brak esystem continues to function normally, but without th e
function slisted above. The wheels could therefor eloc kif you brak e
hard, for example.
The braking distanc ein an emergenc ybraking situation can thus
increase.
If ES P
®is no toperational, ES P®is unable to stabiliz eth evehicle.
There is an increased ris kof skiddin gand an accident.
XCarefully drive asuitable distance, making slight steering move-
ments at aspeed abov e12 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.
282Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
F(USA
only)
!( Canada
only)
Tur nOn the Igni‐
tio ntoReleas etheParkingBrake
The red F(USAonly) or !(Canada only) indicator lamp lights
up.
You attempte dto release th eelectric parking brak ewhile th eignition
was switched off .
XSmartKey:tur nth eSmartKey to position 1in th eignition lock.
XKEYLESS-GO: switch on theignition .
F(USA
only)
!( Canada
only)
Please
Releas ePark‐ing Brake
The red F(USAonly) or !(Canada only) indicator lamp flashes
and awarning tone sounds. Acondition for automatic release of th e
electric parking brak eis no tfulfilled (
Ypage 179).
You are drivin gwit hth eelectric parking brak eapplied.
XReleas eth eelectric parking brak emanually.
The red F(USAonly) or !(Canada only) indicator lamp flashes
and awarning tone sounds.
You are usin gth eelectric parking brak efor emergenc ybraking
(
Ypage 179).
F(USA
only)
!( Canada
only)
Parkin gBrake See
Operator' sManual
The yellow !warning lamp lights up.
The electric parking brak eis malfunctioning .
To apply :
XSwitchth eignition off .
XPress theelectric parking brak ehandle for at least te nseconds.
XShift th etransmission to position P.
XConsultaqualified specialist workshop .
The yellow!warning lamp and th ered F (USAonly) or !
(Canada only) indicator lamp ligh tup.
The electric parking brak eis malfunctioning .
To release:
XSwitc hoff th eignition and tur nit bac kon .
XReleas eth eelectric parking brak emanually.
or
XReleas eth eelectric parking brak eautomatically (Ypage 179).
If th eelectric parking brak estill canno tbe released:
XDo no tdrive on .
XConsult aqualified specialist workshop .
284Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
The redF(USAonly) or !(Canada only) indicator lamp flashes
and th eyellow !warning lamp lights up.
The electric parking brak eis malfunctioning .
To release:
XSwitc hoff th eignition and tur nit bac kon .
XReleas eth eelectric parking brak emanually.
To apply :
XSwitchoff th eignition and tur nit bac kon .
XApply th eelectric parking brak emanually.
If th ered F (USAonly) or !(Canada only) indicator lamp con-
tinue sto flash:
XDo no tdrive on .
XSecureth evehicl eagainst rollin gaway (Ypage 409).
XShift th etransmission to position P.
XTurn thefron twheels toward sth ecurb.
XConsult aqualified specialist workshop .
The yellow!warning lamp lights up. The red F(USAonly)
or ! (Canada only) indicator lamp flashes for about te nseconds
after th eelectric parking brak ehas been applie dor released. It then
goe sout or remain slit .
The electric parking brak eis malfunctioning .
XSwitchoff th eignition and tur nit bac kon .
XApply th eelectric parking brake.
If it is no tpossibl eto engage th eelectric parking brake:
XShift th etransmission to position P.
XVisitaqualified specialist workshop .
If it is no tpossibl eto release th eelectric parking brake:
XReleas eth eelectric parking brak eautomatically (Ypage 179).
If th eelectric parking brak estill canno tbe released:
XConsult aqualified specialist workshop .
The yellow!warning lamp lights up. If you manually apply or
release th eelectric parking brake, th ered F (USAonly) or !
(Canada only) indicator lamp flashes .
The electric parking brak eis malfunctioning .It is no tpossibl eto apply
th eelectric parking brak emanually.
XShift th etransmission to position P.
XVisitaqualified specialist workshop .
Display messages285
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
F(USA
only)
!( Canada
only)
Parkin gBrake Inop‐
erativ e
The yellow !warning lamp lights up. The red F(USAonly)
or ! (Canada only) indicator lamp flashes for about te nseconds
after th eelectric parking brak ehas been applie dor released. It then
goe sout or remain slit .
The electric parking brak eis malfunctioning ,e.g. because of over-
voltag eor undervoltage.
XRemove th ecaus efor th eovervoltage or undervoltage, e.g. by
charging th ebattery or restarting th eengine.
XEngage or release th eelectric parking brake.
If it remain simpossible to apply or release th eelectric parking brake:
XSwitc hoff th eignition and tur nit bac kon .
XEngage or release th eelectric parking brake.
If th eelectric parking brak estill canno tbe released:
XConsult aqualified specialist workshop .
If th eelectric parking brak estill canno tbe applied:
XVisit aqualified specialist workshop .
The yellow!warning lamp lights up and th ered F (USAonly)
or ! (Canada only) indicator lamp flashes .
It is no tpossibl eto apply th eelectric parking brak emanually.
XShift th etransmission to position P.
XVisitaqualified specialist workshop .
$(USA
only)
J( Canada
only)
Check Brake Fluid
Level
There is no tenough brak eflui din th ebrak eflui dreservoir .In addition ,
th e$ (USAonly) or J(Canada only) warning lamp lights up in
th einstrumen tcluste rand awarning tone sounds.
GWARNIN G
The braking effec tmay be impaired.
There is aris kof an accident.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinu edrivin g
under any circumstances.
XSecur eth evehicl eagainst rollin gaway (Ypage 178).
XConsult aqualified specialist workshop .
XDo notadd brak efluid .This does no tcorrec tth emalfunction .
#
CheckBrakePadWear
The brak epads/linings hav ereached their wear limit.
US Aonly: th e$ red brak esystem warning lamp is lit while th e
engin eis running.
XVisit aqualified specialist workshop .
G
Inoperative
Oneor mor emain features of th embrace system are malfunctioning .
XVisitaqualified specialist workshop .
286Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
PRE-SAFE FunctionsLimitedSee Opera‐tor's Manual
PRE ‑S AF E®PLU Sor PRE‑SAFE®Brake is unavailable due to amal-
function .BA SPLU Swit hCross-Traffic Assis tmay also hav efailed.
XVisit aqualified specialist workshop immediately.
RadarSensor sDirtySee Operator' sMan ‐ual
At least on eof th efollowin gdrivin gsystems or drivin gsafet ysystems
is temporarily restricted or inoperative:
RPRE-SAF E®PLUS
RPRE-SAF E®Brake
RCOLLISION PREVENTION ASSIST PLU S
RDISTRONICPLU Swit hSteering Assis tand Stop&Go Pilo t
RActive LaneKeepin gAssis t
RActive Blind Spot Assis t
If th eradar sensor system in fron tis dirty, Active Blind Spot Assis twill
no tperfor m acourse-correcting brak eapplication .
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 warning tone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay message
disappears. Al ldrivin gsystems and drivin gsafet ysystems are oper -
ative 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 178).
XSwitchoff th eengine.
XClean th esensor sin th efollowin glocation s (Ypage 365):
Rin theradiato rtrim
Rin th efron tbumper
Rin th erear bumper, particularly in th emiddle of th erear bumper
XRestart th eengine.
The display message disappears.
6
SRSMalfunctionSer ‐viceRequired
The restrain tsystem is faulty.
The 6 warning lamp also lights up in th einstrumen tcluster.
GWARNIN G
The air bags or Emergency Tensioning Devices may either be triggered
unintentionally or, in th eevent of an accident, may no tbe triggered .
There is an increased ris kof injury.
XVisit aqualified specialist workshop immediately.
Fo rfurther information about th erestrain tsystem, see (
Ypage 44).
288Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
XVisitaqualified specialist workshop immediately.
Fo rfurther information about th eOccupant Classification System, see
(
Ypage 52).
Lights
i
Vehicles wit hLE Dbulbs in th eligh tclusters :
The display message for th ecorrespondin glamp only appear swhen all of th eLEDs in th elamp
hav efailed.
Display messagesPossible causes/consequences and MSolutions
b
Check LeftCorner ‐ing LightorCheckRight CorneringLight
The lef tor right-hand cornering ligh tis defective.
XVisit aqualified specialist workshop .
b
CheckLeftLowBeamorCheck Right LowBea m
The lef tor right-hand low-beam headlamp is defective.
XHalogen headlamp :replace th ebulb (Ypage 119).
XLED headlamps: consultaqualified specialist workshop .
b
CheckTrailerRightTailLam p
The lef tand/o rright-hand trailer tai llamp is faulty.
XConsult th emanufacturer' soperating instructions.
b
Check Traile rLef tTurnSignalor
CheckTraile rRightTurnSignal
The lef tor right-hand trailer tur nsignal lamp is defective.
XConsult th emanufacturer' soperating instructions.
b
CheckTraile rBrakeLamp
The trailer brak elamp is defective.
XConsult th emanufacturer' soperating instructions.
b
Check Rea rLef tTurnSignalor
Check Rea rRight
Tur nSignal
The rear left-han dor rear right-hand tur nsignal is defective.
XVisit aqualified specialist workshop .
292Display messages
On-board computer and displays