
Problem Possible causes/consequences and
0004 Solutions
0008
The red brake
system indicator
lamp is lit while
the engine is
running. There is insufficient brake fluid in the expansion tank.
G WARNING
Braking performance can be impaired.
There is a risk of an accident.
X Vehicles with steering wheel buttons:a lso observe the
messages in the display (Y page 192).
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Check the brake fluid level in the expansion tank
(Y page 245).
X If the brake fluid is below the MIN mark: do not drive on!
X Do not add brake fluid. This does not solve the problem.
X Consult a qualified specialist workshop. 0008
When towing a
trailer: the red
brake system
indicator lamp is
lit while the
engine is
running.
Additionally, a
warning tone
sounds. G
WARNING
The brake force booster in the trailer is faulty.
The driving and braking characteristics of your vehicle could
change. There is a risk of the trailer overbraking and of you losing
control over the truck/trailer combination.
There is a risk of an accident.
X Vehicles with steering wheel buttons :also observe the
messages in the display (Y page 192).
X Stop the vehicle as soon as possible, paying attention to road
and traffic conditions.
X Do not drive on.
X Consult a qualified specialist workshop. 000A
The yellow ASR/
BAS indicator
lamp is lit while
the engine is
running. ASR has been deactivated due to a malfunction.
The engine power output may be reduced.
G WARNING
The drive nwheels can spin when accelerating.
There is an increased risk of skidding and accidents.
X Drive on with care.
X Consult a qualified specialist workshop as soon as possible. Indicator and warning lamps in the instrument cluster
211On-board computer and displays 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). Loading guidelines
Important safety notes
G
WARNING
As a result of improperly placed or unevenly
distributed loads, the center of gravity of the
load being transported may be too high or too
far back. This can significantly impair handling
as well as steering and braking
characteristics. There is a risk of an accident.
Always make sure that the center of gravity of
the load is:
R between the axles
and
R as low as possible, near the rear axle. G
WARNING
When objects are unsecured or inadequately
secured, they can slip, turn over or be thrown
about, striking vehicle occupants .This also
applies to:
R luggage or loads
R a rear bench seat which has been removed
and is being transported in the vehicle in an
exceptional case.
There is a risk of injury, particularly in the
event of braking maneuvers or abrupt
changes in direction.
Always stow objects in such a way that they
cannot be tossed about. Before traveling,
secure objects, luggage or loads to prevent them slipping or tipping over. If you remove a
rear bench seat, it is advisable to store it
outside the vehicle. G
WARNING
When the permissible wheel loads, axle loads
and/or the maximum permissible gross
vehicle weight are exceeded, driving safety is
compromised. The handling as well as
steering and braking characteristics may be
significantly impaired. Overloaded tires may
overheat, causing them to burst. There is a
risk of an accident.
When transporting a load, always observe the
permissible wheel loads, axle loads and the
maximum permissible gross vehicle weight
for the vehicle (including occupants). G
WARNING
When you load the roof, the center of gravity
of the vehicle rises and the driving
characteristics change. If you exceed the
maximum roof load, the driving
characteristics, as well as steering and
braking, will be greatly impaired. There is a
risk of an accident.
Never exceed the maximum roof load and
adjust your driving style.
! If you are using a roof carrier, observe the
maximum roof load and maximum roof
carrier load.
You will find information about the maximum
roof load in the "Technical data" section
(Y page 327) and information about roof
carriers in the "Carrier systems" section
(Y page 236).
R Do not stack luggage or loads higher than
the backrests.
R Objects to be transported should
preferably be stowed in the cargo
compartment. 232
Loading guidelinesTransporting loads

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

case, the tire is so worn that it mus
tbe
replaced. Selecting, mounting and renewing
tires
R Only mount tires and wheels of the same
type and make.
R Only mount tires of the correct size onto
the wheels.
R Break in new tires at moderate speeds for
the first 65 miles (100 km).
R Do not drive with tires which have too little
tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
R Replace the tires after 6years at the latest,
regardless of wear. This also applies to the
spare wheel. Operation in winter
General notes
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Prior to the onset of winter, ensure that snow
chains are stowed in the vehicle
(Y page 277).
Observe the notes in the "Changing a wheel"
section (Y page 302). Driving with summer tires
At temperatures below 45 ‡(+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on your
vehicle to M+S tire. Using summer tires at
very cold temperatures could cause tears to
form, thereby damaging the tires
permanently. We cannot accept
responsibility for this type of damage. M+S tires
G
WARNING
Wheel and tire dimensions as well as the type
of tire can vary between the spare wheel and
the wheel to be replaced .When the spare
wheel is installed, driving characteristics may
be severely affected. There is a risk of an
accident.
In order to reduce risks:
R you should therefore adapt your driving
style and drive carefully.
R never install more than one spare wheel
that differs from the wheel to be replaced.
R only use a spare wheel that differs from the
wheel to be replaced for a short time.
R do not deactivate ESP ®
.
R have a spare wheel that differs from the
wheel that has been changed replaced at
the nearest qualified specialist workshop.
You must observe the correct wheel and
tire dimensions as well as the wheel type. G
WARNING
M+S tires with a tire tread depth of less than
000D in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There
is a risk of an accident.
M+S tires with a tread depth of less than 000D
in (4 mm) must be replaced immediately.
At temperatures below 45 ‡ (+7 †), use
winter tires or all-season tires. Both types of
tire are identified by the M+S marking.
Only winter tires bearing the 0003snowflake
symbol in addition to the M+S marking
provide the best possible grip in wintry road
conditions.
Only these tires will allow driving safety
systems such as ABS and ESP ®
to function
optimally in winter. These tires have been
developed specifically for driving in snow.
For safe driving, use M+S tires of the same
make and tread pattern on all wheels. 276
Operation in winterWheels and tires

Tire pressure
Tire pressure specifications
Important safety notes G
WARNING
Underinflated or overinflated tires pose the
following risks:
R the tires may burst, especially as the load
and vehicle speed increase.
R the tires may wear excessively and/or
unevenly, which may greatly impai rtire
traction.
R the driving characteristics, as well as
steering and braking, may be greatly
impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and chec kthe pressure of all the tires
including the spare wheel:
R monthly, at least
R if the load changes
R before beginning a long journey
R under different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
i The specifications shown on the sample
Tire and Loading Information placard and
tire pressure table are examples. Tire
pressure data are vehicle-specific and may
deviate from the data illustrated here. The
tire pressure data applicable to your
vehicle can be found on the Tire &Loading
Information placard or tire pressure plate
of your vehicle. H
Environmental note
Check the tire pressure regularly, at least
every 14 days. General notes You will find information on tire pressure for
the vehicle's factory-mounted tires on the
plates described here.
You will find a table of recommended tire
pressures on the Tire and Loading
Information placard
5
or on the tire pressure
table on the B-pillar on the driver's side of the
vehicle.
Further information on tire pressure can be
obtained at a qualified specialist workshop.
Tire and Loading Information placard Tire and Loading Information placard
561011
The Tire and Loading Information placard is
on the B-pillar on the driver's side of the
vehicle (Y page 286).
The Tire and Loading Information placard
contains recommended tire pressures 0005for
cold tires. Recommended tire pressures 0005
are valid for the maximum permissible load
and up to the maximum permissible speed of
the vehicle.
5 Only for vehicles with a gross vehicle weight of less than 10,000 lbs(4,536 kg).
6 Only for vehicles with a gross weight of less than 10,000 lbs(4,536 kg).
10 Only for vehicles with a gross vehicle weight of less than 10,000 lbs(4,536 kg).
11 Only for vehicles with a gross weight of less than 10,000 lbs(4,536 kg). 278
Tire pressureWheels and tires

Tire pressure plate
Tire pressure plate
The tire pressure table is located on the
B-pillar on the driver's side of the vehicle
(Y page 286).
The tire pressure table contains
recommended tire pressures 0005for cold
tires. Recommended tire pressures 0005apply
to the maximum permissible load and up to
the maximum permissible speed of the
vehicle. Important notes on tire pressure
G
WARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire ma ybe damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident.
R Check the tire for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage,
contact a qualified specialist workshop.
Use a suitable pressure gauge to chec kthe
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about
the tire pressure. On vehicles equipped with
the electronic tire pressure monitor, the tire
pressure can be checked using the on-board
computer. The tire temperature and pressure increase
when the vehicle is in motion. This is
dependent on the driving speed and the load.
Therefore, you should only correct tire
pressure when the tires are cold.
The tires are cold:
R
if the vehicle has been parked for at least
three hours without direct sunlight on the
tires, and
R if the vehicle has not been driven further
than 1 mile (1.6 km)
Tire temperature changes depending on the
ambient temperature, driving speed and tire
load. If the tire temperature changes by
18 ‡(10 †), the tire pressure changes by
approximately 10 kPa (0. 1bar/1. 5psi). Take
this into account when checking the pressure
of warm tires. Only correct the tire pressure
if it is too low for the current operating
conditions. If you check the tire pressure
when the tires are warm, it results in a higher
value than when the tires are cold. This is
normal. Do not under any circumstances
release the air in order to adjust the pressure
to the prescribed value for cold tires. The tire
pressure would otherwise be too low.
Observe the recommended tire pressures for
cold tires:
R on the Tire and Loading Information
placard 6
on the B-pillar on the driver's side
or
R on the tire pressure table on the B-pillar on
the driver's side of the vehicle Underinflated or overinflated tires
Underinflated tires: G
WARNING
Tires with pressure that is too low can
overheat and burst as a consequence. In
addition, they also suffer from excessive and/
or irregularw ear, which can severely impair
6 Only for vehicles with a gross weight of less than 10,00 0lbs(4,536 kg). Tire pressure
279Wheels and tires
Z

X
Read the tire pressure and compare it with
the recommended value on the loading
information table or th etire pressure table
(Y page 278).
X If the tire pressure is too low, increase it to
the recommended value.
X If the tire pressure is too high, release air
by pressing down the metal pin in the valve.
Use the tip of a pen, for example. Then,
chec kthe tire pressure again using the tire
pressure gauge.
X Screw the valve cap onto the valve.
X Repeatt he steps for the other tires. Tire pressure monitor
Important safety notes G
WARNING
Each tire, including the spare (if provided),
should be checked at least once a month
when cold and inflated to the pressure
recommended by the vehicle manufacturer
on the Tire and Loading Information placard
on the driver's door B-pillar or the tire
pressure label on the inside of the fuel filler
flap. If your vehicle has tires of a different size
than the size indicated on the Tire and Loading
Information placard or the tire pressure label,
you should determine the proper tire pressure
for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly underinflated tire causes the tire
to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle's
handling and stopping ability. Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the
driver's responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate if the
system is not operating properly. The TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the warning lamp will
flash for approximately a minute and then
remain continuously illuminated. This
sequence will be repeated every time the
vehicle is started as long as the malfunction
exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions may occur for a variety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to
continue to function properly.
Vehicles with a tire pressure monitor are
equipped with sensors in the wheels that
monitor the tire pressure of all four tires. The
tire pressure monitor monitors the pressure
in all four tires; you set this pressure when
you activate the tire pressure monitor. The
tire pressure monitor warns you when the
pressure drops in one or more of the tires. The
tire pressure monitor only functions if the
corresponding sensors are installed to all
wheels.
You should always adjust the tire pressure
according to the vehicle load. Restart the tire
pressure monitor if you change the tire
pressure. Tire pressure
281Wheels and tires Z

message. The
000Atire pressure loss warning
lamp in the instrument cluster (Y page 218)
lights up.
The tire pressure is show nin2red rectangles.
The pressure of the tire concerned is shown
in one of the two rectangles (Y page 192).
Additionally, a warning tone sounds.
Each tire that is affected by a significant loss
of pressure is highlighted in the pressure
display.
Restarting the tire pressure monitor When you restart the tire pressure monitor,
the currently set tire pressure are taken as
reference values for monitoring.
In most cases, the tire pressure monitor
detects the new reference values
automatically, e.g. after you have:
R changed the tire pressure
R changed wheels or tires
R installed new wheels or tires
However, you can also define reference
values manually as described here.
Before restarting the tire pressure
monitor:
X Set the tire pressure to the value
recommended on the Tire and Loading
Information placard or the tire pressure
table on the B-pillar on the driver's side
(Y page 278).
Observe the notes on tire pressure when
doing so (Y page 278).
X Make sure that the tire pressure is correct
on all four wheels. Restarting the tire pressure monitor
(vehicles without steering wheel
buttons):
X
Turn the key to position 2in the ignition
lock.
X Press the 0004menu button on the
instrument cluster repeatedly until the
display shows the following message:
+CAL- TPMS X
Press the 000Ebutton on the instrument
cluster.
The display shows:
OK TPMS The tire pressure monitor activation
process has begun. The tire pressures
measured for the individual wheels are
stored as the new reference values,
provided that the tire pressure monitor
considers them to be plausible.
If you wish to cancel the restart:
X Press the 000Fbutton or the 0004menu button
on the instrument cluster.
The activation process is canceled
automatically if 30 seconds elapse with no
input.
Restarting the tire pressure monitor
(vehicles with steering wheel buttons):
X Turn the key to position 2in the ignition
lock.
X Press the 0010or0007 button on the
steering wheel repeatedly until the
standard display is shown (Y page 182).
X Press the 0001or0009 button on the
steering wheel repeatedly until the current
pressure of the individual tires is displayed
or the display shows the following
message:
Tire pres. displayed after driving
for several minutes
X
Press the 0007reset button on the
instrument cluster.
The display shows the following message: Tire pressure
283Wheels and tires Z