The essentials
Fluid Level control Fi l
lin
g capacities
Tank level
Petrol and diesel
engines50 l, of which, approx. 7 l reserveVehicles with all-wheel-drive :
55 l, of which, approx. 8.5 l re- serve
Natural gas en-
ginea)approx. 15 kg
a)
The capacity depends on the efficacy and characteristics of
the natural gas pumps. The capacity indicated is based on a
minimum loading pressure of 200 bar.
Capacity of the windscreen washer fluid container
Versions without
headlight washer
systemapprox. 3 litres
Versions with
headlight washer
systemapprox. 5 litres Fuel
Fig. 58
Fuel tank flap with tank cap attached. The flap that covers the tank cap is unlocked
and loc
k
ed aut
omatically using the central
locking.
Opening the fuel tank cap
● Open the fuel tank flap by pressing on the
left
side.
● Unscrew the cap by turning it to the left.
● Place it in the space on the hinge of the
open flap ››
› Fig. 58.
Closing the fuel tank cap
● Unscrew the cap by turning it to the right as
far as
it will go.
● Close the lid.
››› in Filling up on page 257
›››
page 256 Oil
Fig. 59
Engine oil dipstick. Fig. 60
In the engine compartment: Engine
oi l
fi
ller cap 50
Advice
In these situations you will be aware that the
po w
er m
anagement system is intervening to
control the distribution of electrical power.
When the vehicle is parked for long periods
If you do not drive your vehicle for a period of
several days or weeks, the power manage-
ment will gradually shut off the electrical de-
vices one by one or reduce the amount of cur-
rent they are using. This limits the amount of
power consumed and helps to ensure relia-
ble starting even after a long period. Some
convenience functions, such as remote vehi-
cle opening, may not be available under cer-
tain circumstances. These functions will be
restored when you switch on the ignition and
start the engine.
With the engine switched off
For example, if you listen to the sound sys-
tem with the engine switched off the battery
will run down.
If the energy consumption means there is a
risk that the engine will not start, a text will
appear in vehicles with a driver information
system*.
This driver indicator tells you that you must
start the engine so that the battery can re-
charge. When the engine is running
Although the altern
ator generates electrical
power, the battery can still become dis-
charged while the vehicle is being driven.
This can occur when a lot of power is being
consumed but only a small amount supplied,
especially if the battery is not fully charged
initially.
To restore the necessary energy balance, the
system will then temporarily shut off the elec-
trical devices that are using a lot of power, or
reduce the current they are consuming. Heat-
ing systems in particular use a large amount
of electrical power. If you notice, for instance,
that the seat heating* or the rear window
heater is not working, they may have been
temporarily switched off or regulated to a
lower heat output. These systems will be
available again as soon as sufficient electri-
cal power is available.
You may also notice that the engine runs at a
slightly faster idling speed when necessary.
This is quite normal, and no cause for con-
cern. The increased idling speed allows the
alternator to meet the greater power require-
ment and charge the battery at the same
time. Checking and refilling levels
Fi l
lin
g the tank
Filling up Read the additional information carefully
›› ›
page 50
If the automatic filler nozzle is operated cor-
rectly, it will switch itself off as soon as the
fuel tank is “full”. Do not try to put in more
fuel after the nozzle cuts out, as this will fill
the expansion chamber in the fuel tank.
The correct fuel grade for your vehicle is giv-
en on a sticker on the inside of the fuel tank
flap. Further notes on fuel can be found at
››› page 258.
The capacity of your vehicle's fuel tank is giv-
en in ›››
page 50.
Vehicles with natural gas engines and hy-
brids
Every 6 months it is necessary to run on pet-
rol until the control lamp switches off and
then the tank must be refilled. This is neces-
sary to ensure that the system works proper-
ly, as well as the fuel quality required for driv-
ing with petrol.
256
Index
selector lever lock . . . . . . . . . . . . . . . . . . . . . . . 181
sel ect
or l
ever positions . . . . . . . . . . . . . . . . . . 180
steering wheel with gearshift paddles . . . . . . 182
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 180, 182
AUX-IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
B Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Before starting the vehicle . . . . . . . . . . . . . . . . . . 65
Belt tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Bench seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12, 262 opening the bonnet . . . . . . . . . . . . . . . . . . . . . 263
Brake emergency braking function . . . . . . . . . . . . . . 173
Brake assist system . . . . . . . . . . . . . . . . . . . . . . . 176
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
brake servo . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
electronic parking brake . . . . . . . . . . . . . . . . . 172
new brake pads . . . . . . . . . . . . . . . . . . . . . . . . 175
Braking brake assist system . . . . . . . . . . . . . . . . . . . . . 176
moving off on hills . . . . . . . . . . . . . . . . . . . . . . 179
C
Camera cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
windscreen washer water . . . . . . . . . . . . . . . . 268
Capacity natural gas tank . . . . . . . . . . . . . . . . . . . . . . . . 257 Car-care products . . . . . . . . . . . . . . . . . . . . . . . . . 246
Catalytic
converter . . . . . . . . . . . . . . . . . . . . . . . . 189
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
CD-ROM player (navigation) . . . . . . . . . . . . . . . . 149
Central locking anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . . . . 124
central locking switch . . . . . . . . . . . . . . . . . . . . 119
electric windows . . . . . . . . . . . . . . . . . . . . . . . . 128
Keyless Access . . . . . . . . . . . . . . . . . . . . . . . . . 120
manual locking . . . . . . . . . . . . . . . . . . . . . . . . . . 11
programming . . . . . . . . . . . . . . . . . . . . . . . . . . 119
remote control key . . . . . . . . . . . . . . . . . . . . . . 118
selective unlocking system . . . . . . . . . . . . . . . 118
sliding/tilting sunroof . . . . . . . . . . . . . . . . . . . 128
Central locking system . . . . . . . . . . . . . . . . . . . . . 116
Cetane number (diesel fuel) . . . . . . . . . . . . . . . . 259
Changing parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 rear light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . 97
rear light in the side panel . . . . . . . . . . . . . . . . . 98
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . 57 subsequent work . . . . . . . . . . . . . . . . . . . . . . . . 59
Changing bulbs fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
number plate light . . . . . . . . . . . . . . . . . . . . . . 100
Changing gear engaging gears (manual gearbox) . . . . . . . . . 179
Changing main headlight turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Changing settings CAR menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Changing the blades . . . . . . . . . . . . . . . . . . . . . . . 87
Changing the main beam headlight bulb main beam headlight . . . . . . . . . . . . . . . . . . . . . 96 Changing the main headlight bulb
day light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
dipped headlight . . . . . . . . . . . . . . . . . . . . . . . . 95
Changing the wiper blades . . . . . . . . . . . . . . . . . . 63
Charging the battery . . . . . . . . . . . . . . . . . . . . . . 270
Checking levels engine compartment . . . . . . . . . . . . . . . . . . . . 262
Child-proof locking electric windows . . . . . . . . . . . . . . . . . . . . . . . . 127
Child seat categorisation in groups . . . . . . . . . . . . . . . . . . 84
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19, 84 ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
safety instructions . . . . . . . . . . . . . . . . . . . . 19, 83
securing with seat belt . . . . . . . . . . . . . . . . . . . . 20
Top Tether system . . . . . . . . . . . . . . . . . . . . . 21, 23
City Emergency braking function . . . . . . . . . . . . . 211
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246 alcantara . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
carbon parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Easy Connect control panel . . . . . . . . . . . . . . . 250
exhaust pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
natural leather . . . . . . . . . . . . . . . . . . . . . . . . . 252
plastic parts . . . . . . . . . . . . . . . . . . . . . . 249, 250
radio display . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
trims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
washing the vehicle . . . . . . . . . . . . . . . . . . . . . 246
wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
308