ECU MERCEDES-BENZ GLC-Class 2016 X253 Workshop Manual

Display messagesPossible causes/consequences andMSolutions
Á
Drive MoreSlowly
You canno tchang eth evehicl elevel. Possibl ecauses are:
Ryou are drivin gto ofas tfo rth eselected vehicl elevel.
Ryou are drivin gto ofas twit h a trailer or th etrailer-coupling
socke tis bein gused ,e.g. fo r abicycle rack.
XDrive mor eslowly and then select th edesire dvehicl elevel again
(
Ypage 196).
XObserv eth enote son towin g atrailer (Ypage 228).
Á
Compresso rIsCool‐
ing
You haveselected ahigher vehicl elevel. The compressor first
needs to cool down because of frequen tlevel changes.
XDrive in amanne rappropriat efo rth ecurren tvehicl elevel.
XMak esur ethat there is sufficien tground clearance .
XAllow thecompressor to cool down .
Whe nth ecompressor has cooled down ,th edisplay message
disappears. The vehicl ethen continues risin gto th eselected
level.
Á
Malfunction
AI R BODY CONTROL is malfunctioning. The vehicle's handlin g
characteristics may be affected.
XDrive as appropriat efo rth ecurren tvehicl elevel, but do no t
exceed 50 mph (80 km/h).
XMak esur ethat there is sufficien tground clearance .
XVisitaqualified specialist workshop .
LaneKeepin g
Assist Currently
Unavailable See
Operator' sManual
or Active Lan e
KeepingAssistCur‐
rentlyUnavailable
SeeOperator' sMan‐
ual
LaneKeepin gAssis tor Active Lan eKeepin gAssis tis deactivated
and temporarily inoperative.
Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty.
Rvisibility is impaire ddue to heav yrain ,snow or fog.
Rthere hav ebeen no lan emarking sfo ran extended period.
Rth elan emarking sare worn, dark or covered, e.g. by dir tor snow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Lan eKeepin gAssis tor Active Lan eKeepin gAssis tis operational
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 172).
XClean th ewindshield.
280Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
LaneKeepin g
Assist Inopera‐
tiveorActive
Lan eKeepin g
Assist Inoperative
LaneKeepin gAssis tor Active Lan eKeepin gAssis tis defective.
XVisit aqualified specialist workshop .
Blind SpotAssist
Currently Unavail‐
abl eSee Opera‐
tor's Manualor
Active Blind Spo t
Assist Currently
Unavailable See
Operator'sManual
Blind Spot Assis tor Active Blind Spot Assis tis temporarily inop-
erative .
Possibl ecauses are:
Rth erada rsensor system is outside th eoperating temperature
range.
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 .
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Blind Spot Assis tor Active Blind Spot Assis tis operational 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 172).
XRestart th eengine.
Blind Spo tAssist
Inoperativeor
Active Blind Spo t
Assist Inoperative
Blind Spot Assistor Active Blind Spot Assis tis defective.
XVisit aqualified specialist workshop .
ParkAssist Can ‐
celed
The driver's doo ris open .
XRepeatth eparkin ggap measuremen tand parkin gprocess wit h
th edriver's doo rclosed .
You touched th emultifunction steerin gwhee lwhile steerin ginter-
vention was active .
XWhilesteerin gintervention is active ,mak esur ethat th emulti-
function steerin gwhee lis no ttouched unintentionally.
The vehicl ehas started to skid and ES P®has intervened.
XUse Active Parking Assistagain later (Ypage 201).
Display messages281
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
DISTRONIC PLUSOffDISTRONIC PLU Shas been deactivated (Ypage 183).
If it was no tdeactivated by th edriver , awarnin gtone also sounds.
DISTRONICPLU SNow
Available
DISTRONIC PLU Sis operational again after havin gbeen tempo -
rarily unavailable .You can no wreactivat eDISTRONIC PLU S
(
Ypage 183).
DISTRONICPLU SCur‐
rentlyUnavailable
SeeOperator' sMan‐
ual
DISTRONIC PLU Sis temporarily inoperative.
Steerin gAssis tand Stop&Go Pilo tare temporarily inoperative.
Possibl ecauses are:
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 .
Rthesystem is outside th eoperating temperature range.
Rth eon-boar dvoltag eis to olow.
A warnin gtone also sounds.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
DISTRONIC PLU Sis operational 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 172).
XRestart th eengine.
DISTRONIC PLU S
Inoperative
DISTRONIC PLUSis defective.
The following may hav ealso failed:
RBA SPLU Swit hCross-Traffic Assis t
RPRE-SAFE®Brake
RSteeringAssis tand Stop&Go Pilo t
A warnin gtone also sounds.
XVisit aqualified specialist workshop .
DISTRONICPLUSSus‐
pended
You hav edepressed th eaccelerato rpedal .DISTRONIC PLU Sis no
longer controllin gth espeed of th evehicle.
XRemove your foot from th eaccelerato rpedal .
DISTRONIC PLU S
- - -mph
An activation condition fo rDISTRONIC PLU Sis no tfulfilled .
XCheckth eactivation condition sfo rDISTRONIC PLU S
(
Ypage 183).
Display messages28 3
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
DTR+: Steering
Assist.Currently
Unavailable See
Operator' sManual
Steerin gAssis tand Stop&Go Pilo tare temporarily inoperative.
Possibl ecauses are:
Rth ewindshield in th ecamera' sfield of vision is dirty.
Rvisibility is impaire ddue to heav yrain ,snow or fog.
Rthere are no lan emarking sfo r a longer period.
Rthelan emarking sare worn, dark or covered, e.g. by dir tor snow.
Whe nth ecauses state dabov eno longer apply, th edisplay mes -
sage disappears.
Steerin gAssis tand Stop&Go Pilo tare 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 172).
XClean th ewindshield.
DTR+: Steering
Assist .Inopera‐
tiv e
Steerin gAssis tand Stop&Go Pilo tare faulty.
However, th eDISTRONIC PLU Sfunction sare still available.
A warnin gtone also sounds.
XVisit aqualified specialist workshop .
Cruise Control
Inoperative
Cruisecontrol is malfunctioning.
A warnin gtone also sounds.
XVisit aqualified specialist workshop .
Cruise Control
- - -mph
Acondition fo ractivatin gcruise control has no tbeen fulfilled .
You hav etried to store aspeed belo w20 mph (30 km/h )or ES P
®
is switched off, fo rexample.
If ES P
®is switched off, th eyello wES P®OF Fwarnin glamp lights up
(
Ypage 297).
XIf condition spermit ,drive faste rthan 20 mph (30 km/h) and
store th espeed.
or
XReactivat eES P®(Ypage 74) .
The yello wES P®OF Fwarnin glamp goe sout .
or
XChec kth eactivation condition sfo rcruise control (Ypage 181).
284Display messages
On-board computer and displays

Tires
Display messagesPossible causes/consequences andMSolutions
Please Correct
Tire Pressure
The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
XCheck the tire pressures at the next opportunity (Ypage 381).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypage 383).
Check TiresThe tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
GWARNING
Tire pressures that are too low pose the following hazards:
Rthey may burst, especially as the load and vehicle speed
increase.
Rthey may wear excessively and/or unevenly, which may greatly
impair tire traction.
Rthe driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 172).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (
Ypage 356).
XCheck the tire pressure (Ypage 381).
XIf necessary, correct the tire pressure.
Displa y messages285
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
WarningTir eMal ‐
function
The tire pressur ein on eor mor etires has dropped suddenly. The
whee lposition is shown in th emultifunction display.
GWARNIN G
Drivingwit h a flat tire poses aris kof th efollowing hazards :
Raflat tire affects th eabilit yto steer or brak eth evehicle.
Ryou could los econtrol of th evehicle.
Rcontinued drivin gwit h a flat tire will caus eexcessive heat build-
up and possibl y afire.
There is aris kof an accident.
XStop th evehicl ewithout makin gany sudden steerin gor brakin g
maneuvers .Pay attention to th etraffic condition sas you do so.
XSecur eth evehicl eagainst rollin gaway (Ypage 172).
XCheckth etires and ,if necessary, follow th einstruction sfo r a
flat tire (
Ypage 356).
TirePress. Moni‐
tor Currently
Unavailable
Becaus ethere is interferenc efrom astron gsource of radi owaves,
no signal sfrom th etire pressur esensor sare detected. The tire
pressur emonitor is temporarily malfunctioning.
XDrive on .
The tire pressur emonitor restarts automatically as soo nas th e
problem has been resolved.
TirePress .Sen ‐
sor(s) Missin g
There is no signal from th etire pressur esensor of on eor several
wheels. The pressur eof th eaffecte dtire is no tdisplayed in th e
multifunction display.
XHav eth efault ytire pressur esensor replaced at aqualified spe -
cialist workshop .
TirePressure Mon ‐
itorInoperative
No Wheel Sensor s
The wheels mounted do no thav e a suitable tire pressur esensor .
The tire pressur emonitor is deactivated.
XMoun twheels wit hsuitable tire pressur esensors.
The tire pressur emonitor is activated automatically after drivin g
fo r a few minutes.
Tir ePress. Moni‐
tor Inoperative
The tire pressur emonitor is faulty.
XVisit aqualified specialist workshop .
286Display messages
On-board computer and displays

Vehicle
Display messagesPossible causes/consequences andMSolutions
Shift to 'P' or
'N'toStartEngine
You have attempted to start the engine with the transmission in
positionRor D.
XShift the transmission to position Por N.
Apply Brake to
Shift from 'P'
You have attempted to move the transmission selector lever to
position D,R or Nwithout depressing the brake pedal.
XDepress the brake pedal.
To Deselect P or
N, Depress Brake
and Start Engine
With the engine switched off, you have attempted to shift the
transmission out of position Por Ninto another transmission
position.
XDepress the brake pedal.
XStart the engine.
Transmission Not
in P Risk of Vehi‐
cle Rolling Away
The driver's door is open or not fully closed and the transmission
is in position R,Nor D.
A warning tone also sounds.
GWARNING
The vehicle may roll away.
There is a risk of an accident.
XShift the transmission to position P.
XSecure the vehicle against rolling away (Ypage 172).
XClose the driver's door completely.
Only Shift to 'P'
when Vehicle is
Stationary
The vehicle is moving.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XShift the transmission to positionP.
Service Required
DoNotShiftGears
Visit Dealer
You cannot change the transmission position due to a malfunction.
A warning tone also sounds.
If transmission positionDis selected:
XDrive to a qualified specialist workshop without shifting the
transmission from position D.
If transmission position R,Nor Pis selected:
XSecure the vehicle against rolling away (Ypage 172).
XNotify a qualified specialist workshop or breakdown service.
Display messages287
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Reversing Not Pos‐
sible Service
Required
You cannotshift into th etransmissio nposition Rdue to amal-
function .
The transmissio nposition sP, Nor Dcontinue to be available.
A warnin gtone also sounds.
XVisit aqualified specialist workshop .
Transmission Mal‐
function Stop
Amalfunction has occurred in th emechanica ltransmissio ncom-
ponents .
A warnin gtone also sounds. The gearbox automatically shift sto
position N.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XShift th etransmissio nto position P.
XSecureth evehicl eagainst rollin gaway (Ypage 172).
XNotify aqualified specialist workshop or breakdown service.
Sto pVehicl eLeave
Engine Runnin g
WaitTransmission
Coolin g
The transmissio nhas overheated. Pullin gaway can be temporarily
impaire dor no tpossible.
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.
XWait until th edisplay message disappear sbefore pullin gaway.
AThe tailgat eis open .
GWARNIN G
Whenth eengin eis running ,exhaus tgase scan ente rth evehicl e
interio rif th etailgat eis open .
There is aris kof poisoning.
XClos eth etailgate.
?The hoo dis open . Awarnin gtone also sounds.
GWARNIN G
The open hoo dmay bloc kyour vie wwhen th evehicl eis in motion .
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.
XSecur eth evehicl eagainst rollin gaway (Ypage 172).
XCloseth ehood.
288Display messages
On-board computer and displays

SmartKey
Display messagesPossible causes/consequences andMSolutions
Â
Key Does Not
Belong to Vehicle
You have put the wrong SmartKey in the ignition lock.
XUse the correct SmartKey.
Â
TakeYourKeyfrom
Ignition
The SmartKey is in the ignition lock.
XRemove the SmartKey.
Â
Obtain a New Key
The SmartKey needs to be replaced.
XVisit a qualified specialist workshop.
Â
ReplaceKeyBattery
The SmartKey battery is discharged.
XChange the batteries (Ypage 86).
Â
Don't Forget Your
Key
The SmartKey is not in the ignition lock. You have opened the
driver's door with the engine switched off.
This display message is displayed for a maximum of 60 seconds
and is simply a reminder.
XTake the SmartKey with you when you leave the vehicle.
Â
Key Not Detected
(white display mes-
sage)
The SmartKey is currently undetected.
XChange the location of the SmartKey in the vehicle.
If the SmartKey still cannot be detected:
XInsert the SmartKey into the ignition lock and turn it to the
desired position.
Â
Key Not Detected
(red display message)
The SmartKey is not in the vehicle.
A warning tone also sounds.
If the engine is switched off, you can no longer lock the vehicle
centrally or start the engine.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 172).
XLocate the SmartKey.
XPress aon the steering wheel to confirm the display mes-
sage.
290Display messages
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Becausethere is interferenc efrom astron gsource of radi owaves,
th eke yis no tdetecte dwhils tth eengin eis running .
A warnin gtone also sounds.
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 172).
XInsertth eSmartKey into th eignition loc kand bring into ke y
mode.
Â
Remove'Start 'But‐
ton and Insert Key
The SmartKey is continually undetected.
The SmartKey detection function has atemporar ymalfunction or
is faulty. Awarnin gtone also sounds.
XInser tth eSmartKey into th eignition loc kand tur nit to th e
desire dposition .
XVisitaqualified specialist workshop .
Warning and indicator lamps in th einstrument cluste r
General notes
Some systems carry out aself-diagnosi swhen th eignition is switched on .Therefore ,som e
indicato rand warnin glamp smay ligh tup or flas htemporarily. This behavio ris non-critical.
These indicato rand warnin glamp sonly indicate amalfunction if they ligh tup or flas hafter
startin gth eengin eor whils tdriving.
Warning and indicator lamps in the instrument cluster291
On-board computer and displays
Z