sensor MERCEDES-BENZ GLC COUPE 2019 Service Manual

Display messages
Possible causes/consequences and M
MSolutions #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine.
Active Brake Assist Func-
tions limited See Owner's
Manual *
Ve hicles with Driving Assistance Package: Active Brake Assi stwith cross-traf fic function, Evasi veSteering
Assist or PRE‑SAFE ®
PLUS is malfunctioning.
Ve hicles without Driving Assistance Package: Active Brake Assi stis malfunctioning. #
Consult a qualified specialist workshop.
PRE-SAFE inoperative See
Owner's Manual *
The PRE‑SAFE ®
functions are malfunctioning. #
Consult a qualified specialist workshop.
Mercedes me connect
Services limited See Own-
er's Manual *S
ervice limited.
At least one of the main functions of the Mercedes me connect sy stem is malfunctioning. #
Obser vethe no tes on the diagnostics connection (/ page27). #
Consult a qualified specialist workshop.
G Inoperative *A
t least one of the main functions of the Mercedes me connect sy stem or of the SOS emer gency call sy stem is
malfunctioning. #
Consult a qualified specialist workshop.
Radar sensors dirty See
Owner's Manual *T
heradar sensor sy stem is malfunctioning. Possible causes:
R dirt on the sensors Display messages and
warning/indicator lamps 551

Display messages
Possible causes/consequences and M
MSolutions
R heavy rain or snow
R extended country driving wi thout other traf fic, e.g. in the desert
Driving sy stems and driving saf ety sy stems may be malfunctioning or temp orarily una vailable.
Once the cause of the problem is no longer present, the driving sy stems and driving saf ety sy stems will be available
again.
If th e display message does not disappear: #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean all sensors (/ page475). #
Restart the engine. Driving sy
stems Display messages
Possible causes/consequences and M MSolutions
é ATTENTION ASSIST inoper-
ative *A
TTENTION ASSIST is malfunctioning. #
Consult a qualified specialist workshop. 552
Display messages and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Drive on.
As soon as the ambient conditions are within the sy stem limits, the sy stem will become available again.
Ve hicles with Active Steering Assis t:ifth e display message does not disappear: #
Stop theve hicle in accordance with the tra ffic conditions. #
Clean the windscreen.
Active Lane Keeping Assist
inoperative *A
ctive Lane Keeping Assist is malfunctioning. #
Consult a qualified specialist workshop.
Blind Spot Assist currently
unavailable See Owner's
Manual *B
lind Spot Assist is temp orarily una vailable.
The sy stem limits ha vebeen reached (/ page 257). #
Drive on.
Once the cause of the problem is no longer present, the sy stem will be available again.
or #
Ifth e display message does not disappear, stop theve hicle in accordance with the tra ffic conditions and restart
th e engine. #
If necessar y,clean there ar bumper. If the bumper is especially dirty, the sensors in the bumper may be mal‐
functioning.
Blind Spot Assist inopera-
tive *B
lind Spot Assist is malfunctioning. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 557

Display messages
Possible causes/consequences and M
MSolutions
5 Engine oil pressure Stop
Switch off engine *D
isplay message only for cer tain engines:
The engine oil pressure is too lo w.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil pressure #
Avoid driving with insuf ficient engine oil pressure. #
Stop theve hicle immediately in accordance with the traf fic conditions. Do not continue driving. #
Consult a qualified specialist workshop.
5 Engine oil level cannot be
measured *T
he electrical connection tothe oil le vel sensor has been inter rupte d or the oil le vel sensor is faulty. #
Consult a qualified specialist workshop. 57 0
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions #
Untilthen, manually select transmission position jbefore you swit choff the engine. #
Before leaving theve hicle, apply the electric parking brake. Ty
res Display messages
Possible causes/consequences and M
MSolutions
Tyre press. monitor cur-
rently unavailable *T
here is inter fere nce from a po werful radio signal source. As a result, no signals from the tyre pressure sensors are
being recei ved. The tyre pressure monitor is temp orarily una vailable. #
Drive on.
The tyre pressure monitor restarts automatically as soon as the cause has been rectified.
Tyre press. monitor inoper-
ative *T
he tyre pressure monitor is faulty. &
WARNING Thereis a risk of an accident if the tyre pressure monitoring sy stem is malfunctioning
If th e tyre pressure monitoring sy stem is malfunctioning, it is not able toissue a warning if there is pressure
loss in one or more of the tyres.
Ty res with insuf ficient tyre pressure ma y,forex ample, af fect theve hicle's handling characteristics, steering and
braking. ‑ #
Have the tyre pressure monitoring sy stem checked at a qualified specialist workshop. #
Consult a qualified specialist workshop. 576
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and M
MSolutions
Tyre press. monitor inoper-
ative No wheel sensors *T
he wheels fitted do not ha vesuitable tyre pressure sensors. The tyre pressure monitor is deactivated. #
Fit wheels with suitable tyre pressure sensors.
h
Wheel sensor(s) missing *T
here is no signal from the tyre pressure sensor of one or more wheels. Nopressure value is displa yedfo rthe
af fected tyre. #
Have thefa ulty tyre pressure sensor replaced at a qualified specialist workshop.
h Check tyre(s) *T
he tyre pressure in one or more tyres has dropped significantl y.The wheel position is displa yed. &
WARNING Risk of an accident due toinsuf ficient tyre pressure
Ty res with insuf ficient tyre pressure pose thefo llowing risks:
R The tyres may bur st, especially as the load and vehicle speed increase.
R The tyres may wearexc essively and/or une venly, which may greatly impair tyre traction.
R ‑ The driving characteristics, steering and braking may be greatly impaired.
Yo u could then lose control of theve hicle. #
Obser vethere commended tyre pressures. #
Adjust the tyre pressure if necessar y. #
Stop theve hicle in accordance with the tra ffic conditions. #
Check the tyre pressure (/ page 503) andthe tyres. Display messages and
warning/indicator lamps 577

Display messages
Possible causes/consequences and M
MSolutions
b Automatic driving lights
inoperative *T
he light sensor is faulty. #
Consult a qualified specialist workshop.
b Switch on headlamps *Y
ou are driving without lo w-beam headlamps. #
Turn the light switch totheL orà position.
b
Switch off lights *Y
ou are leaving theve hicle and the lights are still switched on. #
Turn the light switch totheà position.
b Intelligent Light System
inoperative *T
he Intelligent Light Sy stem is faulty. The lighting sy stem continues tofunction properly without the functions of
th e Intelligent Light Sy stem. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 589

Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
? Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
*Possible causes: R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded 120 °C. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. Do not
continue driving under any circums tances. #
Obser vethe messages on the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale: #
Consult a qualified specialist workshop. 602
Display messages and warning/indicator lamps

&inope
rative Battery low ............... 587
&inoperati veRefuel vehicle ........... 588
&inoperative See Owner's Man. ....587
! inope rative See Owner's Man‐
ual ....................................................... 540
÷ inope rative See Owner's Man‐
ual ....................................................... 541
T inope rative See Owner's Man‐
ual ....................................................... 542
G Inoperative .................................. 551
bIntellige nt Light System inoper‐
ative ....................................................5 89
ÁKe y not de tected (red displ ay
messa ge).............................................5 81
Á Key not de tected (white dis‐
pl ay messa ge).....................................5 80
bLeft dipped beam (Example) ....... 588
6Left wind owbag malfunction
Consult workshop (Example) ...............548
Limiter inoperative .............................. 562 Limiter passive
..................................... 561
 Lowe ring .................................... 553
bMalfunction See Owner's Man‐
ual ....................................................... 588
ðMaximum speed exceeded ..........5 62
Mercedes me connect Services limi‐
te d See Owner's Manual ...................... 551
Mo tor can be star ted again .................5 66
N permanently active Risk of vehicle
ro lling .................................................. .574
Ø .................................................... 571
ç Off............................................... 560
ëOff ............................................... 559
Only select Park (P) when vehicle is
st ationary ............................................ 574
ï Operation only possible in
transmission position P ....................... 584
!Pa rking brake See Owner's
Manual ................................................ 543Place
theke y in the mar ked space
See Owner's Manual ............................ 581
Please reduce speed ...........................5 55
ÝPlease wait 48 V battery charg‐
ing ...................................................... .566
PRE-SAFE inope rative See Owner's
Manual ................................................. 551
Ra dar sensors dirty See Owner's
Manual .................................................5 51
_ Rear left seat backrest not
loc ked (Example) .................................5 86
hRe ctify tyre pressure ...................578
Re duce speed ...................................... 579
Ø Refill Ad Blue See Owne r’s Man‐
ual .......................................................5 71
! Release parking brake .................543
¸Re place air cleaner ...................... 567
ÀRe placekey See Owner's Man‐
ual ...................................................... .579
ÁRe placekey ................................ .580 Index
619

8Re
servefuel le vel........................ 567
6Re stra int sys. malfunction Con‐
sult workshop ...................................... 547
Re versing not poss. Consult work‐
shop ....................................................5 75
Risk of vehicle rolling Driver door
open and transmission not in P ...........574
# See Owner's Manual ................... 564
Speed limit (winter tyres) XXX km/h ... 562
ÙSt eering malfunction Incre ased
ph ysical ef fort See Owner's Manual .... 584
ÙSt eering malfunction Stop
immediately See Owner's Manual .......585
St op vehicle Lea veengine running
Wa itTransmission cooling ...................575
# Stop vehicle Lea veengine run‐
ning ..................................................... 565
#St opvehicle See Owner's Man‐
ual .......................................................5 65
ÁSt opvehicle Vehicle too low ........ 554 çsuspended
..................................5 60
bSwitch off lights .......................... 589
bSwitch on headla mps.................. 589
To shift out of P or N,depress brake
and start engine .................................. 573
To switch off the engine, press
St art/ Stop button for at least 3 sec‐
onds or 3 times. .................................. 564
ØTo p upAdBlue Emergency op.
in XXX miles See Owner's Manual .......571
+ Top up coolant See Owner ’s
Manual ................................................ 563
¥To p upwasher fluid .................... .587
Tr af fic Sign Assi stCamera view
re stricted See Owner's Manual ........... 559
Tr af fic Sign Assi stcur rently una vaila‐
ble See Owner's Manual ...................... 558
Tr af fic Sign Assi stinope rative ............. 559
ïTr ailer coupling extending… ......... 582
Tr ansmission Malfunction Stop ............ 575 !
Turn on the ignition torelease
th e parking brake ................................ 543
Ty re press. monitor cur rently una vail‐
able ...................................................... 576
Ty re press. monitor inoperative ...........576
Ty re press. monitor inoperative No
wheel sensors .................................... .577
Ty re(s) ove rheated ...............................5 78
d Vehicle is operational Switch
off ignition before exiting .................... 582
ÁVe hiclerising Please wait............ 554
ÁVe hiclerising ...............................5 53
hWa rning tyre defect .....................578
h Wheel sensor(s) missing ..............577
Wi thout changing gear, consult work‐
shop ....................................................5 75
Ø XX,X l Top up AdBlue Switch on
ignition, wait 60 sec. or eng. start
not poss. .............................................. 572620
Index