2016 MERCEDES-BENZ GL-Class ESP inoperative

Drivingsafet ysystems
Overview of drivin gsafet ysystems
In this section ,you will fin dinformation about
th efollowing drivin gsafet ysystems :
RABS (Anti-loc kBrakin gSystem)
(
Ypage 68)
RBA S (B rake Assist System) (Ypage 69)
RBASPLU S (B rake Assist System Plus )
(
Ypage 69 )
RCOLLISION PREVENTION ASSIST PLU S
(distanc ewarnin gfunction and Adaptive
Brak eAssist) (
Ypage 70 )
RESP®(Electronic StabilityProgram)
(
Ypage 73)
REB D (Electroni cBrak eforc eDi stribution )
(
Ypage 75)
RADAPTIV EBRAKE (Ypage 76 )
RPRE-SAF E®Brake (Ypage 76)
RSTEE RCONTROL (Ypage 77)
Important safet ynotes
If you fail to adapt your drivin gstyle or if you
are inattentive ,th edrivin gsafet ysystems can
neither reduce th eris kof an acciden tno r
override th elaws of physics. Driving safet y
systems are merely aids designed to assist
driving. You are responsible fo rmaintainin g
th edistanc eto th evehicle in front, fo rvehicle
speed, fo rbraking in goo dtime, and fo rstay-
in gin lane. Always adapt your drivin gstyle to
suit th eprevailin groad and weather condi-
tion sand maintain asaf edistanc efrom th e
vehicle in front. Drive carefully.
The drivin gsafet ysystems described only
wor kas effectively as possible when there is
adequat econtact between th etires and th e
road surface. Please pay special attention to
th enote son tires ,recommended minimum
tire tread depths, etc. (
Ypage 404).
In wintr ydrivin gconditions, always use winte r
tires (M+ Stires )and if necessary, snow
chains. Only in this way will th edrivin gsafet ysystems described in this section wor
kas
effectively as possible.
ABS (Anti-lock Braking System)
General information
AB Sregulates brake pressure in suc h away
that th ewheels do no tloc kwhen you brake .
Thi sallow syou to continue steerin gth evehi-
cl e when braking .
The ! ABSwarnin glamp in th einstrumen t
cluster lights up when th eignition is switched
on .It goe sout when th eengin eis running .
AB Sworks from aspeed of about 5mph
(8 km/h), regardles sof road-surfac econdi-
tions. AB Sworks on slipper ysurfaces, eve n
when you only brake gently.
Important safet ynotes
iObserv eth e"Important safet ynotes" sec -
tion (
Ypage 68) .
GWARNING
If AB Sis faulty, th ewheels could loc kwhen
braking .The steerability and braking charac -
teristics may be severely impaired. Addition -
ally, further drivin gsafet ysystems are deac -
tivated. There is an increase ddanger of skid-
din gand accidents .
Drive on carefully. Hav eAB Schecke dimme-
diately at aqualified specialis tworkshop .
WhenAB Sis malfunctioning, other systems ,
includin gdrivin gsafet ysystems ,will also
becom einoperative .Observ eth einformation
on th eAB Swarnin glamp (
Ypage 327) and
display message swhic hmay be shown in th e
instrumen tcluster (
Ypage 291).
Braking
XIf ABS intervenes: continue to depress th e
brake peda lvigorousl yuntil th ebraking sit -
uation is over.
XTo make afull brak eapplication:
depress th ebrake peda lwit hfull force.
68Driving safety systems
Safety

Safety systems
Display messagesPossible causes/consequences andMSolutions
!÷
Currently Unavail‐
able See Opera‐
tor's Manual
ABS (Anti-lock Brake System), BAS (Brake Assist), ESP®(Elec-
tronic Stability Program), ESP®trailer stabilization, PRE‑SAFE®,
the HOLD function, hill start assist, Crosswind Assist, STEER CON-
TROL, Active Lane Keeping Assist and Active Blind Spot Assist are
temporarily unavailable.
COLLISION PREVENTION ASSIST, BAS 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 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 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.
!÷
Inoperative See
Operator'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, BAS 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.
Display messages291
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
÷
Inoperative See
Operator'sManual
ES P®,ES P®trailer stabilization ,BAS, PRE ‑SAFE®, th eHOLD func-
tion ,hill start assist ,Crosswin dAssist, STEE RCONTROL ,Active
Lan eKeepin gAssis tand Active Blind Spot Assis tare unavailable
due to amalfunction .
COLLISION PREVENTION ASSIST ,BA SPLU Sand
PRE ‑S AF E
®Brake may also hav efailed.
In addition ,th e÷ andå warnin glamp sligh 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 wheels could therefore loc kif you
brak ehard, fo rexample.
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 .
T!
÷
Inoperative See
Operator'sManual
EB D(electronic brak eforc edistribution), ABS, ES P®,ES P®trailer
stabilization ,BAS, PRE ‑SAFE®, th eHOLD function ,hill start assist ,
Crosswin dAssist, STEE RCONTROL ,Active Lan eKeepin gAssis t
and Active Blind Spot Assis tare unavailable due to amalfunction .
COLLISION PREVENTION ASSIST ,BA SPLU Sand
PRE ‑SAFE
®Brake may also hav efailed.
In addition ,th e÷, åand! warnin glamp sligh tup in th e
instrumen tcluster and awarnin gtone sounds.
ATTENTION ASSIST is deactivated.
GWARNIN G
The brakesystem continues to function normally, but without th e
function slisted above. The 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.
Display messages29 3
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
$(USA
only)
J(Canada
only)
Check brake fluid
level
There is no tenough brak eflui din th ebrak eflui dreservoir .In
addition ,th e$ (USAonly) or J(Canada only) warnin glamp
lights up in th einstrumen tcluster and awarnin gtone sounds.
GWARNIN G
The brakin geffec 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 tcontinue drivin g
under any circumstances.
XSecur eth evehicl eagainst rollin gaway (Ypage 189).
XConsult aqualified specialist workshop .
XDo notadd brak efluid. This does no tcorrec tth emalfunction .
#
Check brake pad
wear
The brak epads/lining shav ereached their wear limit.
XVisit aqualified specialist workshop .
G
Inoperative
Oneor mor emain features of th embrace system are malfunc -
tioning.
XHav eth embrace system checke dat aqualified specialist work-
shop.
PRE-SAFE Inopera‐
tiv esee Opera‐
tor's Manual
Importan tfunction sof PRE-SAF E®havefailed. Al lother occupant
safet ysystems ,e.g. air bags ,remain available.
XVisit aqualified specialist workshop immediately.
Display messages29 7
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
PRE-SAFEFunctions
Currently Limited
SeeOperator'sMan‐
ual
Adaptive Brake Assis tor th ePRE-SAF E®Brake is temporarily inop-
erative .Possibl ecauses are:
Rfunction is impaire ddue to heav yrain or snow.
Rth erada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radi osta-
tion sor other source sof electromagnetic radiation .
RMercedes-AMG vehicles: ESP®is deactivated
Rthesystem is outside th eoperating temperature range.
Rth eon-boar dvoltag eis to olow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Adaptive Brake Assis tor th ePRE-SAF E
®Brake is 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 189).
XRestart th eengine.
XMercedes-AMG vehicles: reactivat eES P®(Ypage 74).
PRE-SAFEFunctions
Limite dSee Opera‐
tor's Manual
Adaptive Brake Assis tor th ePRE-SAF E®Brake is malfunctioning.
BA SPLU Sor th edistanc ewarnin gfunction may also hav efailed.
XVisit aqualified specialist workshop .
298Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Radar Sensors
Dirty See Opera‐
tor's Manual
At leaston eof th efollowing drivin gsystems or drivin gsafet ysys-
tems is temporarily restricted or inoperative:
RPRE-SAF E®Brake
RActive Lan eKeepin gAssis t
RActive Blind Spot Assis t
If th erada rsensor system in fron tis dirty, Active Blind Spot Assis t
will no tperform 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 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 189).
XSwitchof fth eengine.
XClean th esensor sin th efollowing location s (Ypage 380):
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 disap
pears.
6
Restraintsys.mal‐
function Consul t
workshop
The restraintsystem is faulty.
The 6 warnin 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 .
Observ eth eadditional information on restrain tsystems
(
Ypage 44) .
Display messages299
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
b
Frontleftparkin g
lamporFront
right parkin glam p
The fron tlef tor fron tright parkin gor standin glamp is defective.
XChec kwhether you are permitte dto replac eth ebulb yourself
(
Ypage 137).
or
XVisit aqualified specialist workshop .
b
Backup Light
The backup lamp is defective.
XVisitaqualified specialist workshop .
b
Front leftsid e
marker lam por
Front right sid e
marker lamp
The frontleft-han dor fron tright-hand side marke rlamp is faulty.
XVisit aqualified specialist workshop .
b
Lefttai llam por
Right tai llam p
The lef tor right-hand tai llamp is defective.
or
The rear left-han dor rear right-hand side marke rlamp is faulty.
XVisit aqualified specialist workshop .
b
CheckLeftDaytim e
RunningLightor
Check Right Day ‐
timeRunnin gLight
The lef tor right-hand daytime running lamp is faulty.
XVisit aqualified specialist workshop .
b
Active Light Sys‐
tem inoperative
The active lightfunction is faulty.
XVisit aqualified specialist workshop .
b
Malfunction See
Operator'sManual
The exterio rlighting is defective.
XVisit aqualified specialist workshop .
Vehicles withtrailer to whitch : afusemay hav eblown .
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 189).
XCheckth efuses (Ypage 400).
XIf necessary, replac eth eblown fuse. Observ eth ewarnin gnotes.
If th edisplay message continues to be displayed:
XVisit aqualified specialist workshop .
Display messages305
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
b
AUTOlightsinoper ‐
ative
The ligh tsensor is defective.
XVisit aqualified specialist workshop .
b
Switch off lights
You leaveth evehicl eand th eligh tis still switched on . Awarnin g
tone also sounds.
XTur nth eligh tswitch to th eà position .
Adaptive Highbeam
Assist Currently
Unavailable See
Operator' sManual
Adaptive Highbeam Assis tis deactivated and temporarily inoper -
ative. Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty.
Rvisibility is impaire ddue to heav yrain ,snow or fog.
XClean th ewindshield.
If th esystem detects that th ecamera is full yoperational again ,th e
Adaptive Highbeam Assist Now Available
message is dis-
played .
Adaptive Highbeam Assis tis operational again .
Adaptive Highbeam
Assist Inoperative
Adaptive Highbeam Assis tis faulty.
XVisit aqualified specialist workshop .
Engine
Display messagesPossible causes/consequences and MSolutions
+
Check Coolant
Level See Opera‐
tor's Manual
The coolantlevel is to olow.
!Avoid makin glon gjourneys wit hto olittl ecoolan tin th eengin e
coolin gsystem. The engin ewill otherwise be damaged.
XAd dcoolant, observin gth ewarnin gnote sbefore doin gso
(
Ypage 373).
XIf you need to add coolan tmor eofte nthan usual, hav eth e
engin ecoolan tsystem checke dat aqualified specialist work-
shop.
?The fan motor is faulty.
XAt coolan ttemperatures belo w24 8 ‡ (120†), drive to th e
neares tqualified specialist workshop .
XAvoid subjecting theengin eto heav yloads ,e.g. drivin gin moun-
tainous terrain ,and stop-and-g otraffic.
306Display messages
On-board computer and displays