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78Instruments and controls
Diesel fuel system, bleeding 3 138.
Notice
To ensure the fuel level is displayed
correctly, the ignition must be
switched off before refuelling. Avoid
minor fuel top-ups (e.g. less than
5 litres) to ensure accurate readings.
Because of the fuel remaining in the
tank, the top-up quantity may be less
than the specified tank capacity.
Fuel economy gaugeThe fuel economy gauge provides an
instantaneous calculation of fuel
efficiency based on current driving style.
The gauge uses colours to indicate current fuel efficiency:Green=best fuel economy is
being achievedYellow=driving style too
aggressiveOrange=least efficient fuel
economy
The fuel economy gauge is enabled
by default. It can be disabled via the
Infotainment system. Refer to
Infotainment system manual for
further information.
Service display
When the ignition is switched on, the
remaining distance before the next
service is due may be shown briefly in the Driver Information Centre. Based
on driving conditions, the interval at
which a service will be indicated can
vary considerably.
The distance before service display
can also be shown by pressing button on end of wiper lever for approx.
5 seconds.
When the remaining distance before
the next service is less than
1000 miles or 1 month, a message
appears in the Driver Information
Centre.
When the distance reaches 0 miles or
the service date is due, control
indicator F illuminates in the
instrument cluster and the Driver
Information Centre respectively, and
a corresponding message appears in the Driver Information Centre.
The vehicle needs a service. Seek the assistance of a workshop.
Resetting the service display After a service, the service displaymust be reset:
Select the distance before service
display in the Driver Information
Centre, then press and hold button on end of wiper lever for approx.
10 seconds.
Trip computer 3 88.
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152Vehicle care
Relearn function
After changing wheels, the system
needs to recalculate.
With the vehicle stationary, select the tyre pressure menu in the Driver
Information Centre by pressing button
on end of wiper lever. Press and hold button for approx. 3 seconds to
initialise recalculation. A
corresponding message appears in
the Driver Information Centre.
Several minutes of driving may be
required to complete the relearn
process.
If problems occur during the relearn
process, a warning message is
displayed in the Driver Information
Centre.
Driver Information Centre 3 86.
Vehicle messages 3 87.
General information The use of commercially available
liquid tyre repair kits can impair the
function of the system. Factory-
approved repair kits can be used.
Tyre repair kit 3 154.
External high-power radio equipment
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 depth
Check 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. Ensure that the direction
of rotation of the wheels is the same
as before.
Page 167 of 189

Service and maintenance165Service and
maintenanceGeneral information ...................165
Recommended fluids, lubricants and parts .................................... 166General 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 the vehicle is available at
the workshop.
Service display 3 78.
Engine identification 3 169.
European service intervals
Maintenance of your vehicle is
required every 25,000 miles or after
2 years, whichever occurs first,
unless otherwise indicated by the
service display.
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 display
The service interval is based on several parameters depending on
usage.
The service display, located in the
Driver Information Centre, indicates
when the next service is due. Seek
the assistance of a workshop.
Service display 3 78.
Page 169 of 189
Service and maintenance167
protection down to approx. -28 °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.
Brake fluid Only use high-performance brake
fluid approved for the vehicle. Consult
a workshop.
Over time, brake fluid absorbs
moisture which will reduce braking
effectiveness. The brake fluid should therefore be replaced at the specified interval.
Brake fluid should be stored in a
sealed container to avoid water
absorption.
Ensure brake fluid does not become
contaminated.