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Checking and topping up fluids
Coolant additive
The coolant additive contains anti-freeze and cor
rosion protection agent. Only use one of the
fol
lowing coolant additives. It is possible to mix
these additives.
Topping up coolant
Coolant additive
G13
G12++
Specification
TL774J
TL 774
G
The amount of coolant additive which needs to
be mixed with the water depends on the temper
atures to be expected in the winter season. If the
anti-freeze concentration is too Low, the coolant
can freeze and cause engine damage.
Hot regions
Cold regions
Coolant
additive
min.
40%
max. 45 %
min.
50%
max. 55 %
Frost protec
tion
min.-25°C
max. -40 °C
(T)
CAUTION
- Have your qualified workshop check the
cooling system before the winter season to
make sure that the anti-freeze concentra
tion is adequate for the conditions to be ex
pected.
This applies particularly if
you
drive
into a colder climate zone.
- To prevent damage to the engine, do not
use a different type of anti-freeze additive if
the approved type of additive is not availa
ble.
In this case use only water and bring
the coolant concentration back up to the
correct level as soon as possible by putting
in the specified additive.
- Always top up with fresh, unused coolant.
- Radiator sealants must not be added to the
coolant.
Fig.
248 Engine compartment: Markings on coolant ex
pansion tank
Please refer to the safety notes
^page
295,
Working on components in the engine compart
ment.
Checking coolant level
•
Park the vehicle on a level surface.
•
Switch off the ignition.
•
Read off the coolant level on the coolant ex
pansion tank
^>Fig.
248. When the engine is
cold,
the coolant level should be between the
marks. When the engine is warm, it may be
slightly above the top mark.
Topping up coolant
Important: The coolant expansion tank must not
be empty
•=>([).
•
Wait for the engine to cool down.
•
Cover the cap on the expansion tank with a
cloth,
and carefully unscrew the cap
anti-clock
wise
<=>
/K.
*-
Add coolant in the correct concentration
tapage
299 up to the top mark.
•
You should make sure that the fluid level re
mains stable. If necessary, add more coolant.
•
Screw the cap on again tightly.
Any loss of coolant normally indicates a Leak in
the cooling system. Drive to a qualified workshop
without delay and have the cooling system
checked.
If there are no leaks in the system, a
loss of coolant can only occur if the coolant boils
and is forced out of the system as a result of
overheating.
300
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Checking and topping up fluids
© CAUTIO
-The anti-freeze concentration must be
matched to the climate of the country in
which you are driving. If the concentration
is too
high,
damage to the car may result.
- Never put in radiator anti-freeze or other
additives.
- Never use washer fluid which contains paint
thinners or solvents as it can damage the
paintwork.
Service interval display
The
service interval display detects when the
next
service
is due
for
your vehicle.
There are two service interval dispLay levels:
- Inspection or oil change reminder: After a cer
tain mileage, a service reminder will appear in
the instrument cluster dispLay each time the ig
nition is switched on/off. The distance or time
remaining will be shown briefly.
- Inspection or oil change due: When your
vehi
cle is due for an inspection, oil change or
both,
the corresponding reminder Inspection
due!,
Oil change due! or Oil change and inspection
due!
will appear briefly after you switch the ig
nition on/off.
Checking the service intervals
On the infotainment system, you can look up the
distance and time remaining until the next oil
change or next service inspection. Select the
fol
lowing on the infotainment system:
|MENU|
but
ton > Car
>
left control button > Servicing &
checks
>
Service intervals.
Applies
to: vehicles with flexible oil change service
You cannot check the service interval on a new
vehicle until it has been driven for about 500 km.
Qualified workshops reset the service interval af
ter the oil is changed. The distance to the next oil
change is initially displayed based on the driving
profile prior to the oil change. Your own personal
driving profile is used subsequently to calculate
the remaining distance. Frequent cold starts or
short trips place extra demands on the engine oil
with the result that the oil has to be changed
more often.
Resetting the display
Your qualified workshop resets the service inter
val display after each service.
It is very important that you reset the oil change
dispLay if
you
change the oil yourself. The
next
oil
change will be due after
a
fixed service interval.
To reset the display, select the following on the
infotainment system:
|MENU|
button > Car
>
left
control button > Servicing & checks
>
Service in
tervals
>
Reset oil change interval.
(J) CAUTION
- Do not reset the oil change interval display
unless you have changed the oil.
- Keeping to the correct service intervals is
crucial for the operation, service life and re
sidual value of the vehicle (and especially
for the life of the engine). Services must al
ways be carried out promptly, even if the
mileage is Low.
304
Page 353 of 364

Index
CO
< o rN
iv
rN
•-i
•H
00
Economical driving 72
Economical route 216
EDL
see Electronic differential lock (EDL) .... 145
Efficiency program 21
ELectrical socket
see Power sources 60
Electric windows 46
Child lock 46
Malfunction 47
Electro-mechanical parking brake 82
Electro-mechanical power steering 148
Electronic differential lock (EDL) 145
Electronic immobiliser 38
Electronic stabilisation control (ESC) 145
Embedded SIM card 191
Emergency assist 126
Emergency braking function 82
Emergency
call,
making 181
Emission controL systems
Catalytic converter 295
Diesel particulate filter 295
Emissions 342
Energy consumers 20
Engine
Coolant 299
Driver messages 77
Jump-starting 326
Power output 344
Preheating (with the button) 76
Preheating (with the key) 74
Start/stop system 79
Starting/stopping (with the button) 76
Starting/stopping (with the key) 74
Engine compartment
Layout 297
Opening/closing bonnet 296
Safety notes 295
Engine oil 297
Checking oil level 298
Consumption 298
Dipstick 297, 298
Oil change intervals 304
Oil change service 297
Service intervals 297
Topping up 298
Entering information
Using MMI touch
155
Using the speller 159
Entertainment drawer 157
Entry
Using MMI touch 155
Entry/exit lights 51
Environmental tips
Leaks 296
Minimising pollution 72
Roof carrier 65
ESC
see Electronic stabilisation control (ESC) . 145
Ethanol (fuel) 289
Event data recorder 150
Extended view 17
Exterior lighting 49
Exterior mirrors 53
Folding in 53
Setting for automatic retraction 41
External speech dialogue system 170
F
Factory settings
Multi Media Interface 256
Fader (sound) 260
Fastening rings 62, 273
Fast forward/rewind (audio/video file) .... 243
Fast route 216
Favourites
Media 246
Navigation 210
Telephone 181
File formats (media drives) 249
Filling the tank 290
Fuel gauge 14
Opening fuel tank flap 290
Releasing tank flap manually 291
Tank capacity 343
Finding entries
see Search function 160, 245
Fire extinguisher 318
First-aid kit 318
Floor mats 272
Floor panel, lowering 62
Fog light(s) 49
349