2018 MERCEDES-BENZ METRIS buttons

Lights
Display messagesPossible causes/consequences andMSolutions
b
CheckLeftLowBeamorCheck Right LowBeam
The left or right-hand low-beam headlamp is faulty.
XChange the bulb (Ypage 102).
b
Chk. Trailer L.Turn Sig.orChk.TrailerR.TurnSig.
The left or right-hand trailer turn signal lamp is faulty.
XChange the bulb (see the trailer manufacturer's operating instruc-
tions).
b
Chk. Trailer BrakeLamp
The trailer brake lamp is faulty.
XChange the bulb (see the trailer manufacturer's operating instruc-
tions).
b
Chk. Trailer L.Tail LamporChk.TrailerR.TailLamp
The left or right-hand trailer tail lamp is faulty.
XChange the bulb (see the trailer manufacturer's operating instruc-
tions).
b
Auto Lamps Inopera‐tive
The light sensor is faulty. The automatic headlamp feature is mal-
functioning.
XSwitch the light functions on/off manually (Ypage 96).
XVisit a qualified specialist workshop.
b
Chk. Rear L. TurnSignalorChk. RearR. Turn Signal
The rear left-hand or rear right-hand turn signal is faulty.
XChange the bulb (Ypage 102).
b
Chk. Front L. TurnSignalorChk.FrontR.TurnSignal
The front left-hand or front right-hand turn signal is faulty.
XChange the bulb (Ypage 102).
b
Chk. Center BrakeLamp
The high-mounted brake lamp is faulty.
XVisit a qualified specialist workshop.
b
Chk.L.Tail/BrakeLamporChk. R.Tail/ Brake Lamp
The left or right-hand tail lamp/brake lamp is faulty.
XChange the bulb (Ypage 102).
198Display messages (vehicles without steering wheel buttons)
On-board computer and displays

Engine
Display messagesPossible causes/consequences andMSolutions
#An additional warning tone sounds. The battery is not being charged.
Possible causes:
Rfaulty alternator
Rtorn poly-V-belt
Ra malfunction in the electronics
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XConsult a qualified specialist workshop.
?
Stop Vehicle TurnEng. Off
An additional warning tone sounds. The coolant is too hot.
GWARNING
Never drive with an overheated engine. Driving when the engine is
overheated can cause fluids which may have leaked into the engine
compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the hood.
There is a risk of injury.
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XWait until the engine has cooled down.
XMake sure that the air supply to the radiator is not obstructed, by
frozen slush for example.
XDo not start the engine again until the display message goes out and
the coolant temperature is below the maximum value specified. The
engine could otherwise be damaged.
XPay attention to the coolant temperature gauge (Ypage 175).
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the coolant temperature gauge may rise to 248 ‡ (120 †).
?The fan motor is faulty.
XCheck the coolant temperature (Ypage 175).
XIf the coolant temperature is below the maximum value specified
below, you can continue driving to the nearest qualified specialist
workshop.
Avoid heavy loads on the engine, e.g. driving in mountainous terrain,
and stop-and-go traffic.
Under normal operating conditions and with the specified coolant
level, the coolant temperature gauge may rise to 248 ‡ (120 †).
200Display messages (vehicles without steering wheel buttons)
On-board computer and displays

Drivingsystems
Display messagesPossible causes/consequences an dMSolutions
120 km/h!Only fo rcertain countries: th emaximum speed has bee nexceeded.
XDrive more slowly.
Maximu mSpeed 120km/ hOnly fo rcertain countries: th emaximum speed has bee nexceeded.
XDrive more slowly.
À
Attent .AsstInoper ‐ative
ATTENTION ASSIST has failed.
XVisitaqualified specialis tworkshop .
À
Attent.Asst: Tak eBreak!
Based on certain criteria, ATTENTION ASSIST has detecte dfatigue or
a lac kof concentration on th epar tof th edriver .An additional warnin g
tone sounds.
XIf necessary, take abreak .
Durin glon gjourneys, take regular break sin goo dtime so that you get
enough rest.
Cruise Contro l- - -mphAcondition fo ractivatin gcruise contro lhas no tbee nmet .
You hav etried to stor e aspeed belo w20 mph (30 km/ h)for example.
XIf conditions permit, drive faster than 20 mph (30 km/h) and store
the speed.
XCheck the activation conditions for cruise control (Ypage 145).
202Display messages (vehicles without steering wheel buttons)
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Â
ObtainaNew Key
The SmartKey needs to be replaced.
XVisit aqualified specialist workshop .
¥
Add Washer Fluid
The washer fluidlevel in th ewasher flui dreservoir has dropped belo w
th eminimum .
XAddwasher flui d (Ypage 258).
Displaymessages (vehicles with steering wheel buttons)
Introd uction
Import ant safety notes
GWARNIN G
If th einstrumen tcluste rhas failed or malfunctioned, you may no trecogniz efunction restriction s
in systems relevan tto safety. The operating safet yof your vehicl emay be impaired. There is aris k
of an accident.
Drive on carefully. Hav eth evehicl echecke dat aqualified specialist workshop immediately.
The on-boar dcomputer only shows message sor warning sfrom certain systems in th einstrumen t
cluste rdisplay. You should therefor emak esur eyour vehicl eis operating safely at all times .If th e
operating safet yof your vehicl eis impaired, stop th evehicl eas soo nas possible, payin gattention
to roa dand traffic conditions. The nconsult aqualified specialist workshop .
Display message swit hgraphic symbols are simplified in th eOperator' sManual and may differ from
th esymbols in th edisplay. The display shows high-priorit ydisplay message sin red . Awarning tone
sounds wit hcertain display messages.
Pleas erespon din accordanc ewit hth edisplay message sand follow th eadditional note sin this
Operator' sManual.
You can hide low-priority display message susin gth ea or% steering whee lbutton. The
display message sare then store din th emessage memory. Rectify th ecaus
eo
f adisplay message
as soo nas possible.
High-priority display message scanno tbe hidden .These message swill continu eto be shown in th e
display until their caus ehas been eliminated.
Message memory
The on-boar dcomputer store scertain display message sin th emessag ememory .You can call up
th estore ddisplay messages. Using th esteering whee lbuttons
XPress =or; to select th eServic emenu.
XPress:or9 to select Messages.
The lin eshows th enumber of store dmessages.
XPress ato confirm .
The first store ddisplay message appear sin th edisplay.
If there are no display messages, th edisplay shows No Messages
.
Display messages (vehicles withsteering whee lbu ttons)205
On-board computer and displays
Z

XPress:or9 to scroll through the display messages.
All of the stored display messages are numbered in the message memory. The current message number is displayed as a guide together with the number of stored display messages in the
bottom line of the display.
XPress %to exit the display messages.
Safety systems
Display messagesPossible causes/consequences and MSolutions
ò÷
Inoperative SeeOperator's Manual
ABS, BAS, hill start assist, and ESP®as well as its driving safety sys-
tems are unavailable due to a malfunction.
ATTENTION ASSIST is deactivated and other driving systems could be
automatically 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.
This causes steerability and braking to be greatly impaired. The brak-
ing distance can increase in emergency braking situations.
If ESP
®is not operational, ESP®will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
XDrive on with care.
XVisit a qualified specialist workshop immediately.
ò÷
Currently Unavail.See Operator's Man‐ual
ABS, BAS, hill start assist, and ESP®as well as its driving safety sys-
tems are temporarily unavailable.
ATTENTION ASSIST is deactivated and other driving systems could be
automatically deactivated.
For example, the 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.
This causes steerability and braking to be greatly impaired. The brak-
ing distance can increase in emergency braking situations.
If ESP
®is not operational, ESP®will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
XDrive on with care and on a suitable stretch of road make slight
steering movements at a speed above 12 mph (20 km/h).
If the display message continues to be displayed:
XDrive on with care.
XVisit a qualified specialist workshop immediately.
206Display messages (vehicles with steering wheel buttons)
On-board computer and displays

Engine
Display messagesPossible causes/consequences andMSolutions
#An additional warning tone sounds. The battery is not being charged.
Possible causes:
Rfaulty alternator
Rtorn poly-V-belt
Ra malfunction in the electronics
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XConsult a qualified specialist workshop.
?
Coolant Too Hot:Stop Vehicle TurnEngine Off
An additional warning tone sounds. The coolant is too hot.
GWARNING
Never drive with an overheated engine. Driving when the engine is
overheated can cause fluids which may have leaked into the engine
compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the hood.
There is a risk of injury.
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XWait until the engine has cooled down.
XMake sure that the air supply to the radiator is not obstructed, by
frozen slush for example.
XDo not start the engine again until the display message goes out and
the coolant temperature is below the maximum value specified. The
engine could otherwise be damaged.
XMonitor the ?coolant temperature gauge in the instrument
cluster.
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the ?gauge may rise to 248 ‡ (120 †).
214Display messages (vehicles with steering wheel buttons)
On-board computer and displays

Display messagesPossible causes/consequences andMSolutions
Collision Preven‐tionAssist Cur ‐rentlyUnavail.SeeOper. Manual
COLLISION PREVENTION ASSIST PLU Sis temporarily inoperative.
Possibl ecauses:
RThe sensor sin th efron tbumper are dirty.
RThe function is impaire ddue to heav yrain or snow.
RThe radar sensor system is temporarily inoperative, e.g. due to
electromagneti cradiation emitted by nearby TV or radi ostation sor
other source sof electromagneti cradiation .
RThe system is outside th eoperating temperature range.
RThe on-boar dvoltag eis to olow.
Once th ecauses listed abov eno longer apply, th edisplay message
goe sout and COLLISION PREVENTION ASSIST is operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 135).
XSwitchoff th eengine.
XClean th esensor sin th efron tbumper (Ypage 268).
XRestart th eengine.
Lan eKeepin gAssistInoperativeLaneKeepin gAssis tis faulty.
XVisit aqualified specialist workshop .
LaneKeepin gAssistCurrently Unavail.See Oper. Manual
LaneKeepin gAssis tis deactivated and temporarily inoperative. Pos -
sibl ecauses:
RThe windshield is dirty in th ecamera' sfield of vision .
RVisibilityis impaire ddue to heav yrain ,snow or fog .
RThere are no lan emarking sfor an extended period.
RThe lan emarking sare wor naway, dark or covered, e.g. by dir tor
snow.
Once th ecauses listed abov eno longer apply, th edisplay message
goe sout and Lan eKeepin gAssis tis operational again .
If th edisplay message does no tdisappear :
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 135).
XClean th ewindshield.
Cruise Contro lLDC_Spd_DsrspeedUnit
Acondition for activating cruise control has no tbeen met .
You hav etried to store aspeed belo w20 mph (30 km/ h)for example.
XIf conditions permit, drive faster than 20 mph (30 km/h) and store
the speed.
XCheck the activation conditions for cruise control (Ypage 145).
Display messages (vehicles with steering wheel buttons)217
On-board computer and displays
Z

Engine
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
;NThe yellow Check Engine warning lamp lights up while the engine is running.
There may be a malfunction, for example:
Rin the engine management
Rin the transmission management
Rin the fuel injection system
Rin the exhaust system
Rin the ignition system (for vehicles with a gasoline engine)
Rin the fuel system
The emission limit values may be exceeded and the engine may be running in
emergency mode.
XHave the vehicle checked as soon as possible at a qualified specialist workshop.
æN The yellow reserve fuel warning lamp is on while the engine is running.
The fuel level has dropped to the reserve range.
XRefuel at the nearest gas station.
?N The red coolant warning lamp comes on while the engine is running.
On vehicles without steering wheel buttons, the coolant temperature gage is at the
start of the bar display (
Ypage 175).
On vehicles with steering wheel buttons, the coolant temperature gage is at the
start of the scale in the instrument cluster (
Ypage 39).
The temperature sensor for the coolant temperature gage is faulty.
The coolant temperature is no longer being monitored. There is a risk of engine
damage if the coolant temperature is too high.
XStop the vehicle immediately, paying attention to road and traffic conditions,
and switch off the engine. Do not continue driving under any circumstances.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XConsult a qualified specialist workshop.
Indicator and warning lamps in the instrument cluster227
On-board computer and displays
Z