2018 MERCEDES-BENZ METRIS brake sensor

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

Display messagesPossible causes/consequences andMSolutions
b
CheckTrailerBrakeLamp
The trailer brak elamp is faulty.
XChange th ebulb (see th etrailer manufacturer' soperating instruc-
tions).
b
Check Traile rLef tTailLam porCheckTraile rRight Tai lLamp
The lef tor right-hand trailer tai llamp is faulty.
XChange th ebulb (see th etrailer manufacturer' soperating instruc-
tions).
b
Aut oLam pFunctionInoperative
The ligh tsensor is faulty. The automatic headlamp feature is mal-
functioning .
XSwitchth eligh tfunction son/off manually (Ypage 96).
XVisitaqualified specialist workshop .
b
Check RearLef tTurnSignalor
Check Rea rRight
Tur nSignal
The rear left-han dor rear right-hand tur nsignal is faulty.
XChange th ebulb (Ypage 102).
b
Check Front Lef tTurnSignalor
Check Front Right
Tur nSignal
The fron tleft-han dor fron tright-hand tur nsignal is faulty.
XChange th ebulb (Ypage 102).
b
Check Center BrakeLamp
The high-mounte dbrak elamp is faulty.
XVisit aqualified specialist workshop .
b
CheckLeftTailandBrake Lampsor
Check Right Tai l
and Brake Lamps
The leftor right-hand tai llamp/brake lamp is faulty.
XChange th ebulb (Ypage 102).
b
Check Lef tHig hBeamorCheck RightHig hBea m
The lef tor right-hand high-beam headlamp is faulty.
XChange th ebulb (Ypage 102).
b
Licens ePlate Lam p
The leftor right-hand license plat elamp is faulty.
XVisit aqualified specialist workshop .
212Display messages (vehicles withsteering whee lbu ttons)
On-board computer and displays

Tires
Display messagesPossible causes/consequences andMSolutions
AdjustTirePressureThe 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 pressure at the next opportunity (Ypage 286).
XIf necessary, correct the tire pressure.
XRestart the tire pressure monitor (Ypage 289).
Check TiresAn additional warning tone sounds.
The tire pressure in one or more tires has dropped significantly. The
display shows the wheel position.
GWARNING
Underinflated tires pose the following risks:
RThe tires may burst, especially as the load and vehicle speed
increase.
RThe tires may wear excessively and/or unevenly, which may greatly
impair tire traction.
RThe handling as well as steering and braking characteristics may be
severely affected.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions while doing so.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XCheck the tires and, if necessary, change the wheel (Ypage 298).
XCheck the tire pressure (Ypage 286).
XIf necessary, correct the tire pressure.
Warning Tire Mal‐functionThe tire pressure in one or more tires has dropped suddenly. The dis-
play shows the wheel position.
GWARNING
Driving with a flat tire poses a risk of the following hazards:
RA flat tire affects the ability to steer or brake the vehicle.
RYou could then lose control of the vehicle.
RContinued driving with a flat tire will cause excessive heat build-up
and possibly a fire.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions while doing so.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XCheck the tires and, if necessary, change the wheel (Ypage 298).
Tire Pressure Moni‐tor CurrentlyUnavailable
Due to a source of radio interference, no signals can be received from
the wheel sensors. The tire pressure monitor is temporarily malfunc-
tioning.
The tire pressure monitor restarts automatically as soon as the prob-
lem has been solved.
Displa y messages (vehicles withsteering whee lbu ttons)219
On-board computer and displays
Z

Display messagesPossible causes/consequences andMSolutions
Wheel Sensor(s)MissingThere is no signal from th etire pressur esensor of on eor several
wheels. The pressur eof th eaffecte dtire is no tshown in th edisplay.
XHav eth efault ytire pressur esensor replace dat aqualified special -
ist workshop .
TirePressure Moni‐tor Inoperative NoWheel Sensor s
The wheels installed do no thav esuitable tire pressur esensors. The
tire pressur emonitor is deactivated.
XInstall wheels wit hsuitable tire pressur esensors.
The tire pressur emonitor is activated automatically after drivin gfor
a few minutes.
Tir ePress.Monito rInoperativeThe tire pressur emonitor is malfunctioning .
XVisitaqualified specialist workshop .
Vehicle
Display messagesPossible causes/consequences and MSolutions
Shiftto'P'or'N'to Start EngineYou haveattempte dto start th eengin ein transmission position kor
h.
XShift th etransmission to position jori.
Auxiliary Batter yMalfunctionThe auxiliary battery for th etransmission is no longer bein gcharged.
XVisit aqualified specialist workshop .
Apply Brake toShift from'P'You attempte dto shift th etransmission to position h,kori
without depressing th ebrak epedal .
XDepress th ebrak epedal .
Riskof Rolling:TransmissionNotinP
An additional warning tone sounds. The driver's door is open and th e
transmission is in position k,iorh.
XShift th etransmission to position j.
XSecureth evehicl eto preven tit from rollin gaway (Ypage 135).
Servic eRequiredDoNot Shift GearsVisit Dealer
An additional warning tone sounds. You canno tchang eth etransmis -
sion position due to amalfunction .
If transmission position his selected:
XConsult aqualified specialist workshop without shifting transmis -
sion position h.
If transmission position k,iorj is selected:
XNotify aqualified specialist workshop .
OnlyShift to 'P'whe nVehicl eisSta‐tionar y
The vehicl eis still moving .
XPull overand stop th evehicle, payin gattention to roa dand traffic
conditions.
XShift th etransmission to position j.
220Display messages (vehicles withsteering whee lbu ttons)
On-board computer and displays

Exterior
Cleaning the wheels
!Do not use any acidic or alkaline cleaning
agents. They can cause corrosion on the
wheel bolts or the retainer springs for the
wheel-balancing weights.
!Do not park your vehicle for a long period of
time directly after cleaning, particularly after
cleaning the wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore,
drive for a few minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a
long period of time.
If you clean the wheels with a power washer,
observe the safety notes for the power washer
(
Ypage 266). You could otherwise damage the
tires.
Cleaning the wiper blades
GWARNING
You could become trapped by the windshield wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury.
Always switch off the windshield wipers and
the ignition before cleaning the windshield or
wiper blades.
!Do not fold the windshield wipers away from
the windshield unless the hood is closed. Oth-
erwise, you could damage the hood.
!Do not pull the wiper blade. Otherwise, the
wiper blade could be damaged.
!Do not clean wiper blades too often and do
not rub them too hard. Otherwise, the graph-
ite coating could be damaged. This could
cause wiper noise.
!Hold the wiper arm securely when folding
back. The windshield could be damaged if the
wiper arm smacks against it suddenly.
XTurn the SmartKey to position 0in the ignition
lock or remove the SmartKey.
XFold the windshield wiper arms away from the
windshield until you feel them engage.
XCarefully clean the wiper blades with a damp
cloth.
XFold back the wiper arms before switching on
the ignition.
Cleaning the exterior lighting
!Only use cleaning agents or cleaning cloths
which are suitable for plastic light lenses.
Unsuitable cleaning agents or cleaning cloths
could scratch or damage the plastic light len- ses.
XClean the plastic covers of the exterior light-
ing with a damp sponge and a mild cleaning
agent, e.g. Mercedes-Benz car shampoo, or
with cleaning cloths.
Cleaning the sensors
!Do not use dry, coarse or hard cloths and do
not scrub. You will otherwise scratch or dam-
age the sensors.
If you clean the sensors with a power washer
or steam cleaner, observe the information
provided by the manufacturer regarding the
distance to be maintained between the vehi-
cle and the nozzle of the power washer.
XClean drive system sensors :with water, car
shampoo and a soft cloth.
268Care
Maintenance and care