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09 Maintenance and service
Engine compartment09
331
5 minutes to allow the oil time to run back
to the sump.
2. Pull up and wipe the dipstick.
3. Re-insert the dipstick.
4. Pull it out and check the level.
5.
If the level is close to MIN then 0.5 litres
should be added. If the level is significantly
below, then an additional amount is
required.
6. If required, check the level again, do it after
driving a short distance. Then repeat steps
1 - 4.
WARNING
Never fill above the MAX mark. The level
should never be above MAX or below MIN
as this could lead to engine damage.
WARNING
Do not spill oil onto the hot exhaust manifold
due to the risk of fire.
Engine with electronic oil level sensor3
Filler pipe.4
You do not need to take action with respect to
the engine oil level before a message is shown
in the display, see the illustration below.
Message and graph in the display.
Message
Engine oil level
The oil level is checked using the electronic oil
level gauge with the thumbwheel when the
engine is switched off,see page 200.
WARNING
If the message Oil service required is
shown, visit a workshop. The oil level may
be too high.
3Only applies to 5-cyl. diesel.4Engines with electronic oil level sensor have no dipstick (5-cyl. diesel).
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09 Maintenance and service
Engine compartment 09
332
IMPORTANT
In the event of the message Oil level low
Refill 0.5 Ltr, only fill with 0.5 litres.
NOTE
The oil level is only detected by the system
during driving. The system cannot directly
detect changes when the oil is filled or
drained. The car must be driven
about 30 km before the oil level display is
correct.
WARNING
Do not fill more oil if filling level (3) or (4)
appears as shown in the illustration below.
The level must never be above MAX or
below MIN, as this could lead to engine
damage.
WARNING
Do not spill oil onto the hot exhaust manifold
due to the risk of fire.
Measuring the oil levelIf the oil level needs to be checked then it
should be carried out in accordance with the
sequence below.
1.
Activate key position II, see page 78.
2. Rotate the thumbwheel on the left-hand
stalk switch to position
Engine oil level
Wait....
> You will then see information displayed
about the engine oil level.
The figures 1-4 represent filling level. Do not fill
more oil if filling level (3) or (4) is shown. Recom-
mended filling level is 4.
Coolant
Checking the level and topping up
When topping up the coolant, follow the
instructions on the packaging. It is important
that the mixture of coolant concentrate and
water is correct for the prevailing weather con-
ditions. Never top up with water only. The risk
of freezing increases with both too little and too
much coolant concentrate.
WARNING
Coolant can be very hot. If the coolant
requires topping up when the engine is at
operating temperature, unscrew the expan-
sion tank cap slowly to gently release the
overpressure.
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09 Maintenance and service
Battery 09
344
Operation
The service life and function of the battery is
influenced by factors such as the number of
starts, discharging, driving style, driving con-
ditions, climatic conditions etc.
•Never disconnect the battery when the
engine is running.
•Check that the cables to the battery are
correctly connected and properly tight-
ened.
WARNING
•The battery can generate oxyhydrogen
gas, which is highly explosive. A spark
can be formed if a jump lead is con-
nected incorrectly, and this can be
enough for the battery to explode.
•The battery contains sulphuric acid,
which can cause serious burns.
•If sulphuric acid comes into contact
with eyes, skin or clothing, flush with
large quantities of water. If acid
splashes into the eyes - seek medical
attention immediately.
NOTE
The life of the battery is shortened if it
becomes discharged repeatedly.
The life of the battery is affected by several
factors, including driving conditions and cli-
mate. Battery starting capacity decreases
gradually with time and therefore needs to
be recharged if the car is not used for a
longer time or when it is only driven short
distances. Extreme cold further limits star-
ting capacity.
To maintain the battery in good condition, at
least 15 minutes of driving/week is recom-
mended or that the battery is connected to
a battery charger with automatic trickle
charging.
A battery that is kept fully charged has a
maximum service life.
IMPORTANT
Never use a quick charger to charge the
battery.
IMPORTANT
If the following instruction is not observed
then the energy saving function for infotain-
ment may be temporarily disengaged, and/
or the message in the information display
about the main battery's state of charge
may be temporarily inapplicable, following
the connection of an external battery or bat-
tery charger:
•The negative battery terminal on the
car's main battery must never be used
for connecting an external battery or
battery charger - only the car chassis
may be used as the grounding point.
See the section "Start assistance" - for a
description of how the cable clamps must
be attached.
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09 Maintenance and service
Fuses 09
356* Option/accessory, for more information, see Introduction.
Box AFunctionA
--
Infotainment control module5
Audio control unit (ampli-
fier)*
Digital radio*; TV*10
Audio15
Telematics*; Bluetooth*5
--
Sunroof*; Interior lighting
roof; Climate sensor*;
Damper motors, air intake5
12 V socket, tunnel console15
Seat heating, rear right*15
Seat heating, rear left*15
--
Seat heating (passenger
side)15
Seat heating (driver's side)15
Box AFunctionA
Parking assistance*; Park-
ing camera*; Towbar control
module *
BLIS*5
AWD control module*15
Active chassis Four-C*10
Box BFunctionA
Rear window wiper15
--
Interior lighting; Driver's
door control panel, power
windows; Power seats,
front*; Remote controlled
garage door opener*7.5
Information display (DIM)5
Adaptive cruise control,
ACC*; collision warning sys-
tem*10
Interior lighting; Rain sensor7.5
Steering wheel module7.5
Box BFunctionA
Central locking system, fuel
filler flap10
Rear window washer15
Windscreen washers15
Unlocking, tailgate10
Folding head restraint*10
Fuel pump20
Movement detector alarm*;
Climate panel5
Steering lock15
Siren alarm*; Data link con-
nector OBDII5
--
Airbags10
Collision warning system*5
Accelerator pedal sensor,
PTC element air preheater*;
Dimming, interior rearview
mirror*; Seat heating, rear*7.5
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368
Type designations................................................................................. 370
Dimensions and weights....................................................................... 372
Engine specifications............................................................................ 376
Engine oil............................................................................................... 378
Fluids and lubricants............................................................................. 381
Fuel....................................................................................................... 384
Wheel and tyres, dimensions and pressure ......................................... 388
Electrical system................................................................................... 391
Type approval....................................................................................... 392
Symbols in the display.......................................................................... 404
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10 Specifications
Symbols in the display
10
404* Option/accessory, for more information, see Introduction.
General
There are a variety of different symbols in the
display in the car. The symbols are divided into
warning, indicator and information symbols.
Shown below are the most common symbols
with their meanings and a reference to where
in the manual further information can be found.
For more information on symbols and text
messages, see pages 72, 74 and 200.
- Red warning symbol, illuminates when
a fault has been indicated which could affect
the safety and/or driveability of the car. At the
same time an explanatory text is displayed in
the information display.
- Yellow information symbol, illuminates
in combination with text in the information dis-
play, when a deviation in any of the car's sys-
tems has occurred. The yellow symbol infor-
mation can also illuminate in combination with
other symbols.
Symbols in the display
Indicator and warning symbols in the
combined instrument panel
SymbolMeaningPage
Low oil pres-
sure74
Parking
brake74, 137, 139
Airbags -
SRS19, 74
Seatbelt
reminder16, 74
Alternator
not charging74
Fault in the
brake system74, 136
Warning,
safety mode19, 30, 74, 75,
125
Indicator and information symbols in the
combined instrument panel
SymbolMeaningPage
Fault in the ABL
system*72, 90
Emissions sys-
tem72
Fault in the ABS
system72, 136
Rear fog lamp on72, 91
Stability system,
DSTC, Trailer
stability assist72, 147, 303
Stability system,
sport mode72, 147
Engine pre-
heater (diesel)72
Low level in fuel
tank72, 221
Information,
read display text72
Main beam on72, 90
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10 Specifications
Symbols in the display
10
* Option/accessory, for more information, see Introduction.405
SymbolMeaningPage
Left-hand direc-
tion indicators72
Right-hand
direction indica-
tors72
DRIVe - Start/
Stop*72, 127, 131
Tyre pressure
system*319
Other information symbols in the
combined instrument panel
SymbolMeaningPage
Adaptive cruise
control*152,
156, 162
Adaptive cruise
control*162
Adaptive cruise
control*, Distance
Warning* (Distance
Alert)162, 167
SymbolMeaningPage
Adaptive cruise
control*, Distance
Warning* (Distance
Alert)162, 167
Adaptive cruise
control*162
Adaptive cruise
control*, Distance
Warning* (Distance
Alert)157, 165
Adaptive cruise
control*, Distance
Warning* (Distance
Alert)157, 165
Adaptive cruise
control*156
Radar sensor*162,
167, 179
Start/Stop*, Adap-
tive cruise control*131, 162
SymbolMeaningPage
Speed limiter150
Camera sensor*,
Laser sensor*171,
179,
183, 186
Auto Brake*, Dis-
tance Warning*
(Distance Alert), City
Safety
TM, Collision
warning system*
167,
171, 179
G025102
Fuel-driven engine
block heater and
passenger com-
partment heater*221
ABL system*90
Fuel filler flap, right-
hand side287
Low battery221
Parking brake139
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10 Specifications
Symbols in the display
10
406* Option/accessory, for more information, see Introduction.
SymbolMeaningPage
Rain sensor*98
Driver Alert System*183
Driver Alert Sys-
tem*, Lane Depar-
ture Warning*183, 186
Driver Alert Sys-
tem*, Lane Depar-
ture Warning*186
Driver Alert Sys-
tem*, Time for a
break183
Information symbols in the roof console
display
SymbolMeaningPage
Seatbelt reminder18
Airbag, passenger
seat, activated22, 23
Airbag, passenger
seat, deactivated23
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