
Checking and refilling levels
WARNING
● Swit c
h the engine off, remove the key from
the ignition and apply the hand brake. If the
vehicle has a manual gearbox, place the lever
in neutral; if it has an automatic gearbox,
place the selector lever in position P. Wait for
the engine to cool down.
● Keep children away from the engine com-
partment
.
● Never spill liquids used for vehicle opera-
tion on the engine comp
artment, as these
may catch fire (e.g. the antifreeze in coolant).
● Take care not to cause short circuits in the
electrica
l system, especially when working
on the battery.
● If working inside the engine compartment,
remember that, ev
en when the ignition is
switched off, the radiator fan may start up au-
tomatically, and therefore there is a risk of in-
jury.
● Never cover the engine with additional in-
sul
ating materials such as a blanket. Risk of
fire!
● Do not unscrew the cap on the coolant ex-
pans
ion tank when the engine is hot. The
cooling system is under pressure.
● Protect face, hands and arms by covering
the cap with a l
arge, thick rag to protect
against escaping coolant and steam.
● If it is necessary to work in the engine com-
partment
while the engine is running, the ro-
tating components (for example, poly-V belt, alternator, radiator fan) and the high voltage
ignition sys
t
em are an additional hazard.
● Observe the following additional warnings
if work
on the fuel system or the electrical
system is necessary:
– Always disconnect the battery from the
on-board network.
– Do not smoke.
– Never work near naked flames.
– Always keep an approved fire extinguish-
er immediately available. CAUTION
When topping up fluids make sure the correct
fluid is p
ut into the correct filler opening, oth-
erwise this can cause serious malfunctions or
engine damage. For the sake of the environment
Inspect the ground underneath your vehicle
re gu
larly so that any leaks are detected at an
early stage. If you find spots of oil or other
fluids in the area where it was parked, have
your vehicle inspected at the workshop. Note
In right-hand drive vehicles* some brake flu-
id re ser
voirs are on the other side of the en-
gine compartment ››› Fig. 239. Opening the bonnet
Read the additional information carefully
›› ›
page 17
The bonnet is released from inside the vehi-
cle.
Check that the windscreen wiper arms are
not unfolded. Otherwise the paint may be
damaged.
The bonnet can only be unlocked when the
driver door is open. WARNING
Never open the bonnet if you see steam or
drips of
coolant being released from the en-
gine compartment. Failure to comply could
result in burns. Wait until no steam or coolant
can be seen before opening the bonnet. Closing the bonnet
–
Slightly lift the bonnet.
– Release the bonnet stay before pressing it
bac
k
into its support.
– Carefully close the bonnet.
– Press the bonnet down until it locks into
plac
e.
– Make sure that the bonnet catches onto its
cla
sp. Do not press down too hard ››› .
»
299
Technical data
Advice
Operation
Emergencies
Safety

Index
Audible warning signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
144
se at
belt not fastened . . . . . . . . . . . . . . . . . . . . 79
warning and control lamps . . . . . . . . . . . . . . . 119
Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Auto Hold function . . . . . . . . . . . . . . . . . . . . . . . . 211
Auto Lock (central locking) . . . . . . . . . . . . . . . . . 125
Automatic car washes switching the Auto Hold function off . . . . . . . . 212
Automatic dipped beam control . . . . . . . . . . . . . 146
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . . 193 downhill speed control . . . . . . . . . . . . . . . . . . 198
driving tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
emergency program . . . . . . . . . . . . . . . . . . . . . 199
kick-down feature . . . . . . . . . . . . . . . . . . . . . . . 197
launch control program . . . . . . . . . . . . . . . . . . 197
manual release of the selector lever . . . . . . . . . 49
safety interlock for ignition key . . . . . . . . . . . . 181
selector lever lock . . . . . . . . . . . . . . . . . . . . . . . 194
selector lever positions . . . . . . . . . . . . . . . . . . 193
steering wheel with gear shift paddles . . . . . . 195
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 193, 195
towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
AUX-IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Auxiliary heater . . . . . . . . . . . . . . . . . . . . . . . . . . 177 activating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
electric consumers . . . . . . . . . . . . . . . . . . . . . . 180
operating instructions . . . . . . . . . . . . . . . . . . . 180
programming . . . . . . . . . . . . . . . . . . . . . . . . . . 179
remote control . . . . . . . . . . . . . . . . . . . . . . . . . 178
remote control range . . . . . . . . . . . . . . . . . . . . 179
special features . . . . . . . . . . . . . . . . . . . . . . . . 178
switching off . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
switching on . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
things to note . . . . . . . . . . . . . . . . . . . . . . . . . . 180 B
Batter
y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
replacement in the remote control (auxiliary heater) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Before setting off . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Belt tensioners control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Belt tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Bench seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Bicycle rack fitting on the retractable tow hitch . . . . . . . . . 277
maximum load . . . . . . . . . . . . . . . . . . . . . . . . . 277
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Blind spot detector (BSD) . . . . . . . . . . . . . . . . . . 237 control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 237
driving situations . . . . . . . . . . . . . . . . . . . . . . . 240
indication in the external rear view mirror . . . 238
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17, 298 opening the bonnet . . . . . . . . . . . . . . . . . . . . . 299
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188 brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
brake servo . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
electronic parking brake . . . . . . . . . . . . . . . . . 186
emergency braking function . . . . . . . . . . . . . . 187
new brake pads . . . . . . . . . . . . . . . . . . . . . . . . 188
Braking front assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
BSD see Blind spot detector (BSD) . . . . . . . . . . . . . 237
BSD Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 C
Camera
c
leaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 AdBlue tank . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
windscreen washer water . . . . . . . . . . . . . . . . 304
Car-care products . . . . . . . . . . . . . . . . . . . . . . . . . 285
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . 204 malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
CD-ROM player (navigation) . . . . . . . . . . . . . . . . 161
Central locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . . . . 134
central locking switch . . . . . . . . . . . . . . . . . . . . 128
electric windows . . . . . . . . . . . . . . . . . . . . . . . . 140
emergency locking . . . . . . . . . . . . . . . . . . . . . . . 16
Keyless Access . . . . . . . . . . . . . . . . . . . . . . . . . 129
Panoramic sliding/tilting sunroof . . . . . . . . . . 140
remote control key . . . . . . . . . . . . . . . . . . . . . . 127
selective unlocking system . . . . . . . . . . . . . . . 127
Central wheel trim . . . . . . . . . . . . . . . . . . . . . . . . . 64
Centre console . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cetane number (diesel fuel) . . . . . . . . . . . . . . . . 294
Changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . . . 106 dipped beam . . . . . . . . . . . . . . . . . . . . . . . . . . 107
fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
main beam . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
number plate light . . . . . . . . . . . . . . . . . . . . . . 110
rear bulb in the side panel . . . . . . . . . . . . . . . . 109
rear light in the rear lid . . . . . . . . . . . . . . . . . . . 110
turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . 64 subsequent work . . . . . . . . . . . . . . . . . . . . . . . . 67
330