2012 MERCEDES-BENZ GL SUV Owners Manual

Displa
ymessages Possible causes/consequences and
M Solutions
!
Re
leasep arking brake Th
er ed ! indicato rlamp flashes and awarning ton esounds.
Ac onditio nfor aut omatic relea se of theelectric parking brak eis
not fulfilled (Y page182).
You are driving wit hthe electric parking brak eapplied.
X Releas ethe electric parking brak emanually. The red
!indicator lamp flashes and awarning ton esounds.
You ar emaking an emergenc ystopu singthe electric parking
brak e(Ypage 182). !
Pa
rkingb rake See Owner'
sManual Th
ey ellow !warning lamp light sup.
The electric parking brak eismalfunctioning.
To apply:
X Switch th eignition off.
X Press th eelectric parking brak ehandle for at least ten seconds.
X Move the transmission selector lever to P.
X Consul taqualified specialist workshop. The yellow
!warning lamp and the red !indicator lamp
are lit.
The electric parkin gbrake is malfunctioning.
To release:
X Switch off th eignition and tur nitback on.
X Release the electric parkin gbrake manually.
or
X Releas ethe electric parkin gbrake automaticall y(Ypage 18 2).
If the electric parking brake can still not be released:
X Do not drive on.
X Consul taqualified specialist workshop. 294
Display messagesOn-boar
dcomputer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
The red
!indicato rlamp flashes and the yellow !warning
lamp is lit.
The elect ricp arking brak eismalfunctioning.
To release:
X Switch off the ignition and tur nitback on.
X Release the elect ricp arking brak emanually.
To apply:
X Switch off the ignition and tur nitback on.
X Engage the elect ricp arking brak emanually.
If the red !indicator lamp con tinues to flash:
X Do not driv eon.
X Secure the vehicle agai nstrolling away ( Ypage 405).
X Mov ethe transmissio nselecto rlever to P.
X Turn the fron twheels towards the kerb.
X Consult aqualified specialist workshop. The yellow
!warning lamp lights up. The red !indicator
lamp flashes for about ten seconds after the electric parking brake
has been applied or released .Itthen goes out or remain slit.
The electric parkin gbrake is malfunctioning.
X Switch off th eignition and tur nitback on.
X Engage the electric parking brake.
If it is not possible to apply the electric parking brake:
X Move the transmission selector lever to P.
X Visit aqualified specialist workshop.
If it is not possible to release the electric parking brake:
X Release the electric parking brake automatically (Y page 182).
If the electric parking brake can still not be released:
X Consult aqualified specialist workshop. The yellow
!warning lamp lights up. If you manually apply or
release the electric parking brake, the red !indicator lamp
flashes.
The electric parking brake is malfunctioning. It is not possible to
apply the electric parking brake manually.
X Move the transmission selector lever to P.
X Visit aqualified specialist workshop. Display messages
295On-board computer and displays Z

Displa
ymessages Possible causes/consequences and
M Solutions
!
Pa
rking brake inop‐
erative Th
ey ellow !warning lamp lights up. The red !indicator
lamp flashes fo rabout ten seconds after the electric parkin gbrake
ha sb een applied or released. It then goes out or remains lit.
The electric parkin gbrake is malfunctioning ,e.g. because of over-
voltag eorundervoltage.
X Remove the cause for the overvoltage or undervoltage ,e.g. by
charging the battery or restarting the engine.
X Appl yorr elease the electric parkin gbrake.
If it remains impossibl etoapply or release the electric parking
brake:
X Swit choff the ignition and tur nitback on.
X Apply or release the electric parkin gbrake.
If th eelectric parkin gbrake can stil lnot be released:
X Consult aqualified specialist workshop. The display messag
eisonly shown whil ethe vehicle is in motion.
The red !indicator lam pflashes and the yellow !warning
lamp is lit.
It is not possible to apply the electric parkin gbrake manually.
X Move th etransmission selector lever to P.
X Visit aqualified specialist workshop. !
Turn on th
eigni‐ tion to release
the parkin
gbrake Th
er ed ! indicator lam pislit.
You attempted to release the electric parkin gbrake whil ethe igni-
tion was switched off.
X Key: turnthe key to position 1in the igni tion lock.
X KEYLESS-GO: switchonthe igni tion. J
Chec
kbrake fluid level There is insufficient brake fluid in th
ebrake flui dreservoir. In addi-
tion ,the J warnin glamp in the instrument cluster lights up and
aw arning ton esounds.
G WARNING
The brakin gefficienc ymay be impaired.
There is arisk of an accident.
X Pull over and stop the vehicle safely as soon as possible ,paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Secure the vehicle against rolling away (Y page 181).
X Consult aqualified specialist workshop.
X Do not top up the brake fluid. This does not correct the error. 296
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
#
Ch
eckb rake pad wear Th
eb rak epads/lining shaver eached their wear limit.
X Visit aqualified specialist workshop. PR
E-SAFE inopera‐ tiv
eS ee Owner's Manual Important functio
nsof PRE-SAFE ®
hav efailed .All other occupant
safet ysystems, e.g. airbags ,remai navailable.
X Visit aqualified specialist worksho pimmediately. PRE-SAFE
Function
scur‐ rently limited See
Owner's Manual Vehicle
swithou tthe Activ eDriving Assistance package: Adaptive
Brake Assist is temporaril yinoperative. Possible causes:
R the function is impaired due to heavy rain or snow.
R the sensor in the bumper is dirty.
R the rada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emit tedbyn earby TV or radi osta-
tions or othe rsources of elect romagnetic radiation.
R AM Gvehicles: ESP ®
is deactiva ted.
R the system is outside the operatin gtemperatur erange.
R the on-board voltage is too low.
Onc ethe causes liste dabove no longer apply, the display message
goes out.
Adapti veBrake Assis tiso perational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rollin gaway (Y page 181).
X Clean the bumpers (Y page 370).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 67). Display messages
297On-boardcomputer and displays Z

Displa
ymessages Possible causes/consequences and
M Solutions
PR
E-SAFE Functions cur‐
rently limited See
Owner'
sManual Vehicles with the Active Driving Assistance package:
PRE-SAFE
®
Brake is tempora rily inoperative. Possibl ecauses:
R thef unction is impaire ddue to heav yrain or snow.
R thes ensor sint he ra diatortrim and in th ebumpers are dirty.
R the rada rsensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emit tedbyn earby TV or radi osta-
tions or othe rsources of elect romagnetic radiation.
R AM Gvehicles: ESP ®
is deactiva ted.
R the system is outside the operatin gtemperatur erange.
R the on-board voltage is too low.
Onc ethe causes listed abov enolonger apply ,the displa ymessage
goes out.
PRE- SAFE ®
Brake is operational again.
If the displa ymessage does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rollin gaway (Y page 181).
X Clean the sensors in the radiator grille and the bumper
(Y page 370).
X Restart the engine.
X AMG vehicles: reactivate ESP ®
(Y page 67). PRE-SA
FE Functions limited
See Owner's Manual Vehicles withou
tthe Activ eDriving Assistance package: Adapti ve
Brake Assis tisf aulty. The distanc ewarning function may also have
failed.
Vehicles with the Active Driving Assis tance package:
PRE-SAFE ®
Brak eisf aulty. BA SPLUS or th edistanc ewarning
function may also have failed.
X Visit aqualified specialist workshop. ü If the symbol appears in the multifunction display,
aseat belt
tongue has been inser tedi nto arear seat belt buckle.
Fur ther information on the status indicator for the rear seat belts
(Y page 49). 298
Display messagesOn-boar
dcomputer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
ý If th
esymbol appears in the multifunction display, aseat belt
tongue has not been inser tedinar ear seat belt buckle.
G WAR
NING
As eat belt which is not worn cor rectly, or which has not been
engage dinthe seat belt buckle cor rectly, cannot provide the
intende dlevel of protection.
This poses an inc reased risk of injury.
X If necessary, ask the occupants in the rear to fasten their seat
belts (Y page 47).
Further information on the status indicator for the rear seat belts
(Y page 49). 6
Restra
int sys. mal‐
functio
nConsult workshop There is
amalfunction in the SRS (Supplemental Restraint Sys-
tem).
The 6 warning lamp also lights up in the instrument cluster.
G WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This pose sanincreased risk of injury.
X Visit aqualified specialist workshop.
Further information on occupant safety (Y page 41).6
Front
left malfun
c‐ tion Consult work‐
shop or
Front right malfunction Con‐
sult workshop SRS ha
smalfunctioned at the fron tonthe lef torright. The 6
warnin glamp also lights up in the instrument cluster.
G WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This pose sanincreased risk of injury.
X Visit aqualified specialist workshop. 6
Rear left malfun
c‐ tion Consult work‐
shop or
Rear right malfunction Con‐
sult workshop SRS ha
smalfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster.
G WARNING
The airbags or belt tensioners may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
This pose sanincreased risk of injury.
X Visit aqualified specialist workshop. Display messages
299On-board computer and displ ays Z

Displa
ymessages Possible causes/consequences and
M Solutions
6
Re
ar centre mal‐ function Consult
workshop SRS ha
smalfunctioned at th erear centre. The 6warning lamp
also lights up in th einstrument cluster.
G WARNING
The airbags or belt tensioners ma yeither be triggered uninten-
tionally or, in the even tofanaccident, may not be triggered.
Th isposes an incr easedriskofi njury.
X Vis itaq uali fieds pecialist workshop. 6
Left
windowbag mal‐
function Consult
workshop or
Right windowba
gmalfunc‐ tion Consul
twork‐ shop There is
amalfunction in the left-hand and/or right-han dwindow-
bag. The 6warnin glamp also lights up in the instrument clus-
ter.
G WARNING
The left or right windowbag may either be triggered unintentionally
or, in the event of an accident, may not be triggered.
This pose sanincreased risk of injury.
X Visit aqualified specialist workshop. Lights
i Display messages about LEDs:
This display messag ewill only appear if all LED shave failed. Display messages Possible causes/consequences and
M Solutions
b
Left cornering
light orRigh
tcor‐ nering light Th
eleft or right-han dcornerin glight is faulty.
X Check whether you are permitted to replace the bulb yourself
(Y page 129).
or
X Visit aqualified specialist workshop. b
Left dipped
beam orRigh
tdipped beam Th
eleft or right-han ddipped-beam headlamp is faulty.
X Check whether you are permitted to replace the bulb yourself
(Y page 129).
or
X Visit aqualified specialist workshop. b
Traile
rleft indi‐ cator or
Trailer right indicator Th
eleft or right-han dtrailer turn signa llamp is faulty.
X Check whethe ryou ar epermitted to replace the bulb yourself.
or
X Visit aqualified specialist workshop. 300
Display messagesOn-board computer and displays

Displa
ymessages Possible causes/consequences and
M Solutions
b
Re
ar lef ti ndica‐ tor or
Re ar right indicator Th
er ear left-han dorrear right-hand tur nsignal is faulty.
X Check whether you are permitted to replac ethe bulb yourself
(Y page 12 9).
or
X Visit aqualified specialist workshop. b
Fron
tleft indica‐ tor or
Front right indicator Th
ef ront left-hand or front right-hand turn signal is faulty.
X Check whethe ryou ar epermitted to repla cethe bulb yourself
(Y page 129).
or
X Visit aqualified specialist workshop. b
Left
mirror indica‐
tor orRigh
tmirror indicator Th
et urns ignal in the left-han dorright-han dexterior mirror is
faulty.
X Check whether you are permitted to repla cethe bulb yourself
(Y page 129).
or
X Visit aqualified specialist workshop. b
Thir
dbrakel amp Th
et hirdb rake lamp is faulty.
X Check whethe ryou ar epermitted to repla cethe bulb yourself
(Y page 129).
or
X Visit aqualified specialist workshop. b
Left brake
lamp orRigh
tbrake lamp Th
eleft or right-han dbrake lamp is faulty.
X Check whethe ryou ar epermitted to repla cethe bulb yourself
(Y page 129).
or
X Visit aqualified specialist workshop. b
Left-han
dtail lamp/brake
lamp or
Right-hand tail lamp/brake
lamp Th
eleft or right-han dtail lamp/brak elamp is faulty.
X Check whether you are permitted to replac ethe bulb yourself
(Y page 12 9).
or
X Visit aqualified specialist workshop. Display mess
ages
301On-board computer and displays Z