78Instruments and controls1 off:natural gas
operation1 illuminates:petrol operation
During natural gas operation, if
control indicator Y illuminates in the
Driver Information Centre 3 90, the
natural gas tanks are empty and
petrol operation is automatically
engaged.
Fuel for natural gas operation 3 134,
Refuelling 3 135.
Engine coolant temperature gauge
Displays the coolant temperature.
If control indicator $ illuminates, the
coolant temperature is too high.
Depending on version, a message
also appears in the Driver Information Centre 3 90. Seek the assistance of
a workshop.Caution
If engine coolant temperature is
too high, stop vehicle, switch off
engine. Danger to engine. Check
coolant level.
Service display
Service display is available in
vehicles with Multifunction version of the Driver Information Centre 3 90.
When the ignition is switched on, the remaining distance before the next
service is due may be shown briefly.
Based on driving conditions, the
interval at which a service will be
indicated can vary considerably.
When the remaining distance before
the next service is less than 2,000 km ,
Serv. appears in the Driver
Information Centre. The service
reminder is repeated after every
additional 200 km and becomes more
frequent when the remaining distance
is below 200 km.
When the remaining distance has
reduced to zero, a warning message, e.g. Service coupon expired , appears
in the Driver Information Centre.
The vehicle needs a service. Seek the assistance of a workshop.
The remaining distance to the next
service may also be viewed in the
Driver Information Centre by
selecting Service from the settings
menu options 3 90.
88Instruments and controls9Warning
When the engine is off,
considerably more force is needed
to brake and steer. During an
Autostop the brake servo unit will still be operational.
Do not remove ignition key until
vehicle is stationary, otherwise the steering wheel lock could engage
unexpectedly.
Check oil level before seeking the
assistance of a workshop 3 143.
Change engine oil Diesel engines with diesel particle
filter
I flashes red.
Illuminates when the ignition is
switched on and extinguishes shortly
after the engine starts.
The engine oil life monitor lets you know when to change the oil. Control
indicator I will flash to indicate that
engine oil life has been diminished
and the oil needs changing.
Depending on version, a
corresponding warning message,
e.g. Change engine oil , may also be
displayed in the Driver Information
Centre 3 90.
Based on driving conditions, the
interval at which an oil change will be
indicated can vary considerably.
Depending on model variant, I may
flash in the following ways:
● for one minute every two hours, or
● for three minute cycles with I off
for intervals of five seconds
The warning will be repeated every
time the engine is started, until the
engine oil is changed and the service display is reset. Seek the assistance
of a workshop.
Service display 3 78.
Low engine oil level
S illuminates red.
Illuminates for a few seconds after the ignition is switched on.If the control indicator does not
extinguish after a few seconds, or if it illuminates while driving, the engine
oil level is insufficient.
Depending on version, a
corresponding warning message,
e.g. Check engine oil level , may also
be displayed in the Driver Information
Centre 3 90.
Check oil level before seeking the assistance of a workshop 3 143.
Low fuel $ illuminates or flashes yellow.
Illuminates for a few seconds after the ignition is switched on.
Illuminates
Level in fuel tank is too low. Refuel
immediately 3 135.
Never run the tank dry.
Depending on version, a
corresponding warning message,
e.g. Warning low fuel , may also be
displayed in the Driver Information Centre 3 90.
Catalytic converter 3 120.
162Vehicle careGeneral information
The use of tyre chains or
commercially available liquid tyre
repair kits can impair the function of
the system. Factory-approved tyre
repair kits can be used.
Tyre repair kit 3 163, Tyre chains
3 163.
Operating electronic devices or being
close to facilities using similar wave
frequencies could disrupt the tyre
pressure monitoring system.
Each time the tyres are replaced, tyre pressure monitoring system sensors
must be dismounted and serviced by
a workshop.
Tread depthCheck tread depth at regular
intervals.
Tyres should be replaced for safety
reasons at a tread depth of 2-3 mm
(4 mm for winter tyres).
For safety reasons, it is
recommended that the tread depth of
the tyres on one axle should not vary
by more than 2 mm.
The legally permissible minimum
tread depth (1.6 mm) has been
reached when the tread has worn
down as far as one of the tread wear
indicators (TWI). Their position is
indicated by markings on the
sidewall.
If there is more wear at the front than
the rear, swap round front wheels and
rear wheels periodically. Ensure that
the direction of rotation of the wheels
is the same as before.
Tyres age, even if they are not used.
We recommend tyre replacement
every six years.
Changing tyre and wheel
size
If tyres of a different size than those
fitted at the factory are used, it may be necessary to reprogramme the
speedometer as well as the nominal
tyre pressure and make other vehicle modifications.
After converting to a different tyre
size, have the label with tyre
pressures replaced.9 Warning
Use of unsuitable tyres or wheels
may lead to accidents and will
invalidate the vehicle type
approval.
Wheel covers
Wheel covers and tyres that are
factory approved for the respective
vehicle and comply with all of the
relevant wheel and tyre combination requirements must be used.
If the wheel covers and tyres used are
not factory approved, the tyres must
not have a rim protection ridge.
176Service and maintenanceService and
maintenanceGeneral information ...................176
Service information ..................176
Recommended fluids, lubricants
and parts .................................... 177
Recommended fluids and lubricants ................................ 177General information
Service information In order to ensure economical and
safe vehicle operation and to
maintain the value of your vehicle, it
is of vital importance that all
maintenance work is carried out at the proper intervals as specified.
The detailed, up-to-date service
schedule for your vehicle is available
at the workshop.
Service display 3 78.
Engine identification 3 180.
European service intervals Petrol and CNG engines
Maintenance of your vehicle is
required every 30,000 km or
two years, whichever occurs first.
Diesel engines
Maintenance of your vehicle is
required every 35,000 km or
two years, whichever occurs first,
unless otherwise indicated in the
Driver Information Centre 3 90.A shorter service interval can be valid
for severe driving behaviour, e.g. for
taxis and police vehicles.
Service display 3 78.
International service intervals
Maintenance of your vehicle is
required every 20,000 km or after one year, whichever occurs first,unless otherwise indicated by the
service display.
The international service intervals are valid for:
Albania, Belarus, Bosnia-
Herzegovina, Georgia, Macedonia,
Moldova, Montenegro, Serbia,
Ukraine.
Severe operating conditions exist if
one or more of the following
circumstances occur frequently: Cold
starting, stop and go operation, trailer operation, mountain driving, driving
on poor and sandy road surfaces,
increased air pollution, presence of
airborne sand and high dust content,
driving at high altitude and large
variations of temperature. Under
these severe operating conditions,
Service and maintenance177certain service work may be requiredmore frequently than the regular
service interval.
Service display 3 78.
Confirmations
Confirmation of service is recorded in the Service and warranty booklet.
The date and mileage is completed
with the stamp and signature of the servicing workshop.
Make sure that the Service and
warranty booklet is completed
correctly as continuous proof of
service is essential if any warranty or goodwill claims are to be met, and is
also a benefit when selling the
vehicle.
Service interval with remaining
engine oil life duration
The service interval is based on
several parameters depending on
usage.
When the engine oil requires
changing, control indicator I will
flash in the instrument cluster 3 88.Depending on version, a message
may also appear in the Driver
Information Centre 3 90.
Service display 3 78.Recommended fluids,
lubricants and parts
Recommended fluids andlubricants
Only use products that meet the
recommended specifications.9 Warning
Operating materials are
hazardous and could be
poisonous. Handle with care. Pay
attention to information given on
the containers.
Engine oil
Engine oil is identified by its quality
and its viscosity. Quality is more
important than viscosity when
selecting which engine oil to use. The oil quality ensures e.g. engine
cleanliness, wear protection and oil
ageing control, whereas viscosity
grade gives information on the oil's
thickness over a temperature range.
178Service and maintenanceDexos is the newest engine oil quality
that provides optimum protection for
petrol and diesel engines. If it is
unavailable, engine oils of other listed qualities must be used.
Recommendations for petrol engines
are also valid for Compressed Natural
Gas (CNG) fuelled engines.
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 181.
Topping up engine oil
Engine oils of different manufacturers and brands can be mixed as long as
they comply with the required engine
oil quality and viscosity.
Use of engine oil with only
ACEA A1/B1 or only A5/B5 quality is
prohibited, since it can cause long-
term engine damage under certain
operating conditions.
Select the appropriate engine oil
based on its quality and on the
minimum ambient temperature
3 181.Additional engine oil additives
The use of additional engine oil
additives could cause damage and
invalidate the warranty.
Engine oil viscosity
The SAE viscosity grade gives
information on the thickness of the oil.
Multigrade oil is indicated by two
figures, e.g. SAE 5W-30. The first
figure, followed by a W, indicates the
low temperature viscosity and the
second figure the high temperature
viscosity.
Select the appropriate viscosity grade depending on the minimum ambient
temperature 3 181.
All of the recommended viscosity
grades are suitable for high ambient
temperatures.
Coolant and antifreeze
Use only antifreeze approved for the
vehicle. Consult a workshop.
The system is factory filled with
coolant designed for excellent
corrosion protection and frost
protection down to approx. -28 °C. In
regions with very low temperatures,the factory filled coolant provides frost
protection down to approx. -37 °C.
This concentration should be
maintained all year round.
The use of additional coolant
additives that intend to give additional
corrosion protection or seal against
minor leaks can cause function
problems. Liability for consequences
resulting from the use of additional coolant additives will be rejected.
Washer fluid
Use only washer fluid approved for
the vehicle to prevent damage of
wiper blades, paintwork, plastic and
rubber parts. Consult a workshop.
Brake and clutch fluidOver time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should therefore be replaced at the specified interval.
Technical data181Vehicle data
Recommended fluids and lubricants
Required engine oil qualityEngine oil quality: Europedexos 2✔
For countries with International
service interval 3 176, you may use
the oil qualities listed below:
Engine oil quality: Internationaldexos 2✔ACEA C3✔ACEA A3/B4✔Engine oil viscosity gradesAmbient temperaturedown to -25 °CSAE 5W-30 or
SAE 5W-40below -25 °CSAE 0W-30 or
SAE 0W-40