Problem Possible causes/consequences and
0004 Solutions
0014
The red coolant
warning lamp is
lit while the
engine is
running. The coolant temperature is too high.
X
Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Consult a qualified specialist workshop. 0014
The red coolant
warning lamp is
lit while the
engine is
running. The coolant temperature is too high.
If the vehicle is stopped after being subjected to extreme loads,
the coolant warning lamp may come on when the ignition is
switched on or the engine is restarted. Such loads can be, for
example, driving in mountainous terrain or driving with a trailer.
X
Run the engine for approximately 1minute at idling speed.
X Consult a qualified specialist workshop if the display message
continues to be shown. 0016
0006
The yellow
reserve fuel
warning lamp is
on. At the same
time
0 appears
in the fuel tank
conten tdisplay
while the engine
is running,
although there is
fuel in the fuel
tank The fuel filler cap is not closed.
X
Close the fuel filler cap.
You will hear a clic kwhen the fuel filler cap is closed fully.
X If the malfunction continues to be displayed, have it rectified
immediately at a qualified specialist workshop. 0018
The yellow
engine
diagnostic
indicator lamp is
lit up or flashes
while the engine
is running. You have used up all fuel in the tank.
The engine is running in emergency mode.
X
Refuel at the nearest gas station (Y page 142).
X Bleed the fuel system (Y page 137).
X Start the engine three to four times in succession after refueling.
Emergency running mode will be canceled. The vehicle does not
need to be checked. 216
Indicator and warning lamps in the instrument clusterOn-board computer and displays
Problem Possible causes/consequences and
0004 Solutions
0013
The yellow air
filter indicator
lamp is lit while
the engine is
running. The service limit for the air filter has been reached. The air filter
is dirty.
X
Have the air filter element replaced as soon as possible at a
qualified specialist workshop. 000A
The yellow tire
pressure
monitor warning
lamp comes on. G
WARNING
The tire pressure monitor indicates a rapid or severe loss of
pressure in at least one tire.
X Stop the vehicle without making any extreme steering
maneuvers or braking suddenly. Pay attention to the traffic
conditions while doing so.
X Check the tires and correctt he tire pressure. If a tire continues
to lose pressure, it must be replaced. Replace damaged tires
immediately.
The warning light will go out after the flat tire has been rectified
and you have been driving for a few minutes.
X Vehicles with steering wheel buttons: also observe the
messages in the display (Y page 192).000A
US vehicles
only:
The yellow tire
pressure
monitor warning
lamp flashes for
60 seconds and
then remains lit. The tire pressure monitor has malfunctioned.
X
Have the tire pressure monitor and the wheels checked at a
qualified specialist workshop. 000E
The yellow water
separator
indicator lamp is
lit when the
ignition is
switched on. The water that has collected in the water separator of the fuel filter
has reached the maximum level.
X
Drain the water separator (Y page 247).218
Indicator and warning lamps in the instrument clusterOn-board computer and displays
Useful information
This Operator's Manual describes all models
as well as standard and optional equipment
of your vehicle that were available at the time
of going to print. Country-specific variations
are possible. Note that your vehicle may not
be equipped with all of the described
functions. This also applies to systems and
functions relevant to safety.
Read the information on qualified specialist
workshops (Y page 26). Engine compartment
Hood
Opening the hood G
WARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. G
WARNING
Opening the hood when the engine is
overheated or when there is a fire in the
engine compartmen tcould expose you to hot
gases or other service products. There is a
risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department. G
WARNING
Certain components in the engine
compartment, such as the engine, radiator
and parts of the exhaust system, can become
very hot. Working in the engine compartment
poses a risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following. G
WARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
is a risk of injury.
If you need to do any work inside the engine
compartment,
R switch off the ignition
R never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
R keep clothing away from moving parts G
WARNING
The fuel injection system operates with a high
voltage. If you touch the live components, you
could receive an electric shock. There is a risk
of injury.
Never touch components of the fuel injection
system when the ignition is switched on.
The live components of the fuel injection
system are, for example, the injectors.
! Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield
wipers or the hood. Hood release lever in the driver's footwell
X
Stop your vehicle as far away from traffic
as possible on level ground.
X Switch off the engine. 240
Engine compartmentMaintenance and care
Store brake fluid only in the original closed
container and keep it out of the reach of
children. Comply with safety regulations
when handling brake fluid.
! Brake fluid corrodes paint, plastic and
rubber .Ifpaint, plastic or rubbe rhas come
into contact with brake fluid, rinse with
wate rimmediately. G
WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapo rpockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
! If the brake fluid level in the brake fluid
reservoir has fallen to the MIN mark or
below, check the brake system
immediately for leaks. Also check the
thickness of the brake linings. Visit a
qualified specialist workshop immediately.
Do not add brake fluid. This does not
correct the malfunction.
Have the brake fluid renewed every two
years.
Observe the information on brake fluid in the
"Technical data" section ( Ypage 245). Check the brake fluid level regularly, e.g.
weekly or when refueling. Checking the brake fluid level
X
Stop your vehicle as far away from traffic
as possible on level ground.
X Switch off the engine.
X Secure the vehicle to prevent it from rolling
away.
X Open the hood (Y page 240).
X Check the brake fluid level.
The brake fluid level is correc tifthe level is
between the MIN mark and MAX mark on
brake fluid reservoir 0005.
X Close the hood. Washer fluid
G
WARNING
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust system it
could ignite. There is a risk of fire and injury.
Make sure that no windshield washer
concentrate is spilled next to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or
MB WinterFit. Unsuitable washer fluid
could damage the plastic lenses of the
headlamps. Example: washer fluid reservoir
Add windshield washer concentrate to the
washer fluid all year round. Observe the
information on washer fluid in the "Technical
data" section (Y
page 326).246
Engine compartmentMaintenance and care
Adding washer fluid
X
Mix the washe rfluid to the appropriate
mixing ratio in a container beforehand.
X Open the hood (Y page 240).
X Pull cap 0005on the washer fluid reservoir
upwards at the tab.
X Add the premixed washer fluid.
X Press cap 0005onto the filler neck until it
engages audibly.
X Close the hood. Fuel system
Draining the fuel filter G
WARNING
Fuel is highly flammable. Improper handing of
fuel creates a risk of fire and explosion.
Avoid fire, open flames ,smoking and creating
sparks under all circumstances. Switch off the
ignitio nand auxiliary heating before carrying
ou tw ork to the fuel system. Always wear
protective gloves. H
Environmental note
Dispose of the water-fuel mixture in an
environmentally responsible manner.
! When the 000Eindicator lamp lights up,
drain the fuel filter with water separator
immediately. Otherwise, the engine may be
damaged. If the
000E indicator lamp in the instrument
cluster goes on, drain the fuel filter with water
separator 0026immediately.
i We recommend that you have this
maintenance work carried out at a qualified
specialist workshop.
X Park the vehicle safely and secure it from
rolling away.
X Switch off the auxiliary heating system .
X Switch off the engine.
X Open the hood (Y page 240).
X Place a suitable receptacle under drain
hose 0005.
X Turn the key to position 2in the ignition
lock.
X Open drain plug 0006immediately until the
water/fuel mixture flows out of drain
hose 0005.
X Screw in drain plug 0006as soon as
approximately 0.2 US qt (0.2 l) of the
water/fuel mixture have been collected.
i The electrical fuel pump halts the flow of
the water/fuel mixture after 30 seconds.
X After draining, turn the key back to
position 0in the ignition lock.
X Dispose of the collected water/fuel
mixture in an environmentally responsible
manner, e.g. at a qualified specialist
workshop.
X Check drain plug 0006.The drain plug must
be closed.
When the engine is running and drain
hose 0006is open, fuel is lost through drain
hose 0005.
X Close the hood.
If the 000E indicator lamp does not go out
after draining:
X Drain the fuel filter again.
X If the 000E indicator lamp does not go out
after draining for the second time, have the
cause checked immediately at a qualified
specialist workshop. Engine compartment
247Maintenance and care Z
X
Recharge the removed battery. Observe
the notes in the operating instructions for
your battery charger.
X Install the battery. Observe the notes on
reconnecting the battery.
i If batteries are no tbeing used, you should
charge them once a month.
It is also possible to charge the starter
battery using the jump-starting connection
point in the engine compartment
(Y page 267). Care
! Dirty battery clamps and battery surfaces
cause leak currents which lead to the
batteries discharging.
! Do not use cleaning agents containing
fuel. Cleaning agents containing fuel
corrode the battery housing.
! If dirt gets into the battery cell, battery
self-discharge will increase and the battery
may be damaged.
The following points on battery care must be
observed:
X Regularly chec kthe battery terminals and
the fastening of the negative cable to the
chassis to ensure that they are firmly
seated.
X Always keep the battery terminals and
battery surfaces clean and dry.
X Lightly grease the undersides of the battery
terminals with acid-resistant grease.
X Only clean the batteries when the caps are
screwed on.
Otherwise, dirt could get into the battery
cells.
X Unscrew the caps and clean blocked
breathers with a suitable tool such as a
piece of wire.
If you do not unscrew the caps for cleaning,
there is a risk of short circuit. The breathers in the caps and the cell
ventilation tubes must be open. Otherwise,
gas cannot escape.
X Only clean the battery casing with a
commercially available cleaning product. Care
Notes on care
G
WARNING
If you use openings in the bodywork or
detachable parts as steps, you could:
R slip and/or fall
R damage the vehicle and cause yourself to
fall.
There is a risk of injury.
Always use secure climbing aids, e.g. a
suitable ladder.
! For cleaning your vehicle, do not use any
of the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
! Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after
cleaning. Braking heats the brake discs and
the brake pads/linings, thus drying them.
The vehicle can then be parked. Care
255Maintenance and care Z
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
High-pressure cleaning equipment
G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components.
Components damaged in this way may fail
unexpectedly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis componentsr eplaced
immediately.
! Observe the minimum distance to be
maintained between the nozzle of the
power washer and objec ttobe cleaned, as
outlined below:
R approximately 2.2 ft(70 cm) when using
round-jet nozzles
R approximately 1ft(30 cm) whe nusing
25°flat-spray jets and dirt blasters
Keep the water jet moving while cleaning.
To avoid causing damage, do not point the
water jet directly at:
R door joints
R brake hoses
R electrical components
R electrical connections
R seals
R drive train, especially not at the
intermediate bearing of the propeller
shaft
R rear view camera (camera lens and
microphone opening on the bottom)
Keep a minimum distance of
1.6 ft(50 cm).
Cleaning the engine !
Water must not enter intake or ventilation
openings. When cleaning with high
pressure water or steam cleaners, the spray must not be aimed directly at
electrical components or the terminals of
electrical lines.
Preserve the engine after the engine has
been cleaned. Protect the belt drive system
from exposure to the preservative agent.
Also observe the information in the section
"Powerw asher" (Y page 257).
Cleaning the paintwork !
Do not affix:
R stickers
R films
R magnetic plates or similar items
to painted surfaces .You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected
by corrosion and damage caused by
inadequate care cannot always be completely
repaired. In such cases, visit a qualified
specialist workshop.
X Remove impurities immediately, where
possible, whilst avoiding rubbing too hard.
X Soak insect remains with insect remover
and rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse
off the treated areas afterwards.
X Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid.
X Use tar remover to remove tar stains.
X Use silicone remover to remove wax.
Cleaning the windows G
WARNING
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. Care
257Maintenance and care Z
Useful information
This Operator's Manual describes all models
as well as standard and optional equipment
of your vehicle that were available at the time
of going to print. Country-specific variations
are possible. Note that your vehicle may not
be equipped with all of the described
functions. This also applies to systems and
functions relevant to safety.
Read the information on qualified specialist
workshops (Y page 26). Where will I find...?
Vehicle tool kit
General notes The vehicle tool kit is in the stowage
compartment in the footwell on the co-
driver's side. For vehicles without a spare
wheel, the Premium tire sealant and the tire
inflation compressor are in the stowage
compartment in the right-hand door sill.
The vehicle tool kit consists of:
R a towing eye
R a lug wrench
R 2o pen-end wrenches
R a screwdriver with Torx ,Phillips and slotted
bits
i Vehicles without a spare wheel are not
equipped with the tools needed to change
a wheel when they leave the factory, e.g. a
jack. In the event of a flat tire, these
vehicles are equipped with a tire sealant
and a tire inflation compressor. Country-
specific variations are possible. Stowage compartment in the co-
driver's footwell Unlocking and removing the cover
X
Turn quick-release fastener 0005counter-
clockwise or clockwise 0009.
X Slightly raise and pull out the cover. Removing the vehicle tool kit and the jack
X
If necessary, use tool 4
0026 for the DEF tank
fuel filler cap to remove the fixture.
X Remove vehicle tool kit 0024.
X Pull up quick-release lever 0025and unhook
the retaining strap of jack 0023.
X Lift jack 0023upwards out of the holder.
i When stowing away the jack, place it in
the holder as shown in the illustration.
Make sure that the retaining strap of the
jack is hooked in and tensioned.
4 Chassis Cab only. 264
Where will I find...?Breakdown assistance