
The essentials
the wheel condition and hub mounting surfa-
c e
s.
These surfaces must be clean before fit-
ting the wheel.
Wheel bolt tightening torque
The prescribed tightening torque for wheel
bolts for steel and alloy wheels is 140 Nm.
After changing a wheel, have the tightening
torque checked immediately with a torque
wrench that is working perfectly.
Before checking tightening torque, have any
rusty wheel bolts that are difficult to screw re-
placed and clean the wheel hub threads.
Never apply grease or oil to wheel bolts or to
the wheel hub threads. Even if the bolts have
been tightened to the prescribed torque, they
could come loose while driving. WARNING
If the wheel bolts are not properly tightened,
they c ou
ld come loose while driving and
cause an accident, serious injury and loss of
vehicle control.
● Use only wheel bolts which correspond to
the rim in question.
● Nev
er use different wheel bolts.
● Wheel bolts and threads should be clean,
free of oi
l and grease, and it should be possi-
ble to screw them easily.
● To loosen and tighten wheel bolts, only use
the wheel wrenc
h that came with the car from
the factory. ●
Loo sen the wheel
bolts only about one turn
before raising the vehicle with the jack.
● Never apply grease or oil to wheel bolts or
to the wheel hub thr
eads. Even if the bolts
have been tightened to the prescribed tor-
que, they could come loose while driving.
● Never loosen the screwed joints of wheel
rims with bo
lted ring trims.
● If wheel bolts are tightened below the pre-
scribed t
orque, the bolts and rims could come
loose while driving. If tightening torque is too
high, the wheel bolts or threads can be dam-
aged. CAUTION
When removing/fitting the wheel, the rim
ma y
hit and damage the brake disc. For this
reason, please take care and get a second
person to assist you. Tyres with compulsory rotation direc-
tion
A directional tread pattern can be identified
b
y
the arr
ows on the sidewall that point in
the direction of rotation. Always observe the
direction of rotation indicated when fitting
the wheel to guarantee optimum properties
of this type of tyres with regard to grip,
noises, wear and aquaplaning.
If it is absolutely necessary to fit the spare
tyre* against the direction of rotation, drive with care as this means the tyre does not of-
fer optimum drivin
g properties. This is of par-
ticular importance when the road surface is
wet.
To return to directional tread tires, replace
the punctured tyre as soon as possible and
restore the obligatory direction of rotation of
all tyres.
Subsequent work ●
Alloy wheels: rep
l
ace the wheel bolt caps.
● Plate wheels: repl
ace the wheel hubcap.
● Return all tools to their proper storing loca-
tion.
● If the replaced wheel does not fit in the
spar
e wheel housing, store it safely in the
luggage compartment ›››
page 152.
● Check the tyre pressure of the newly moun-
ted tyr
e as soon as possible.
● In vehicles fitted with a tyre pressure indi-
cator
, adjust the pressure and store it in
memory ›››
page 282.
● Have the tightening torque of the wheel
bolts c
hecked as soon as possible with a tor-
que wrench (it should be 120 Nm). Mean-
while, drive carefully.
● Have the flat tyre replaced as quickly as
pos s
ible. 65

Advice
extra care. Refit the normal road wheel as
soon as
po
ssible. Wheel bolts
The design of wheel bolts is matched to the
rims. If diff
er
ent wheel rims are fitted, the
correct wheel bolts with the right length and
correctly shaped bolt heads must be used.
This ensures that wheels are fitted securely
and that the brake system functions correctly.
In certain circumstances, you should not use
wheel bolts from a different vehicle, even if it
is the same model ››› page 255. WARNING
If the wheel bolts are not tightened correctly,
the wheel c ou
ld become loose while driving.
Risk of accident.
● The wheel bolts must be clean and turn
eas
ily. Never apply grease or oil to them.
● Use only wheel bolts which belong to the
wheel.
● If the pr
escribed torque of the wheel bolts
is t
oo low, they could loosen whilst the vehi-
cle is in motion. Risk of accident! If the tight-
ening torque is too high, the wheel bolts and
threads can be damaged. CAUTION
The prescribed tightening torque for wheel
bolt s
for steel and alloy wheels is 120 Nm. Tyre monitoring indicator*
Fig. 241
Centre console: tyre monitoring sys-
t em b
utt
on. The tyre monitoring system compares wheel
r
ev
o
lutions alongside the wheel diameter of
each wheel, with help from the ESC. If the di-
ameter of a wheel changes, the tyre monitor-
ing indicator lights up . The wheel diame-
ter changes when:
● Tyre pressure is insufficient.
● The tyre structure is damaged.
● The vehicle is unbalanced because of a
load. ●
The wheel
s of
one axle are under more
pressure (for example, driving with a trailer or
on steep slopes).
● The vehicle is fitted with snow chains.
● The temporary spare wheel is fitted.
● The wheel on one axle is changed.
Tyr
e pressure adjustment
After modifying tyre pressure or changing any
wheels, the new tyre pressure must be stored
in the Easy Connect system with the but-
t on and the S
ET
TINGS function button
› ›
›
page 33.
You can also press and hold down the
››› Fig. 241 button with the ignition on, until
an acoustic signal is heard.
If the wheels are under excessive load (for ex-
ample, driving with a trailer or heavy load),
the tyre pressure must be increased to the
recommended value for a full load (see the
sticker on the back of the left front door
frame). If the tyre monitor system button is
pressed down, the new tyre pressures are
confirmed.
The tyre pressure control lamp lights up
If the tyre pressure of a wheel is much lower
than the value set by the driver, then the tyre
pressure control lamp ››› will light up.
282

Technical specifications
Drawbar loads
The maximum permitt ed dr
a
wbar load on the
ball joint of the towing bracket must not ex-
ceed 75 kg.
In the interest of road safety, we recommend
that you always tow approaching the maxi-
mum drawbar load. The response of the trail-
er on the road will be poor, if the drawbar
load is too small.
If the maximum permissible drawbar load
cannot be met (e.g. with small, empty and
light-weight single axle trailers or tandem
axle trailers with a wheelbase of less than 1
metre), a minimum of 4% of the actual trailer
weight is legally required for the drawbar
load. WARNING
● For s af
ety reasons, you should not drive at
speeds above 80 km/h (50 mph) when towing
a trailer. This also applies in countries where
higher speeds are permitted.
● Never exceed the maximum trailer weights
or the drawb
ar load. If the permissible axle
load or the permissible total weight is excee-
ded, the driving characteristics of the vehicle
may change, leading to accidents, injuries
and damage to the vehicle. Wheels
Ty
r
e pressure and wheel bolts Tyre pressures
The stic
k
er with the tyre pressure values can
be found on the back of the left front door
frame. The tyre pressure values given there
are for cold tyres. Do not reduce the slightly
raised pressures of warm tyres ››› .
The pre s
sure for winter tyres is 0.2 bar higher
than that of summer tyres (2.9 psi / 20 kPa).
Wheel bolts
After the wheels have been changed, the
tightening torque of the wheel bolts should
be checked as soon as possible with a torque
wrench ››› . The tightening torque for steel
and al lo
y
wheels is 120 Nm. WARNING
● Check the ty
re pressure at least once per
month. Checking the tyre pressure is very im-
portant. If the tyre pressure is too high or too
low, there is an increased danger of accidents
- particularly at high speeds.
● If the tightening torque of the wheel bolts
is t
oo low, they could loosen while the vehi-
cle is in motion. Risk of accident! If the tight-
ening torque is too high, the wheel bolts and
threads can be damaged. Note
We recommend that you ask your Technical
Serv ic
e for information about appropriate
wheel, tyre and snow chain size. 287
Technical data
Advice
Operation
Emergencies
Safety

Index
Starting the engine . . . . . . . . . . . . . . . . . . 169, 170 aft
er the f
uel tank has been run dry . . . . . . . . 170
diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
petrol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Starting the vehicle . . . . . . . . . . . . . . . . . . . . . . . . 30
Steel wheel rims cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73, 168 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
electromechanical . . . . . . . . . . . . . . . . . . . . . . 168
power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
power-assisted steering . . . . . . . . . . . . . . . . . . 168
steering column lock . . . . . . . . . . . . . . . . . . . . 168
Steering wheel adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
gearshift paddles (automatic gearbox) . . . . . . 185
Steering wheel controls . . . . . . . . . . . . . . . . . . . . 119
Steering wheel height adjustment . . . . . . . . . . . . 73
Storage compartment . . . . . . . . . . . . . . . . . . . . . 150 of front door panel . . . . . . . . . . . . . . . . . . . . . . 150
on the front passenger side . . . . . . . . . . . . . . . 150
right front seat . . . . . . . . . . . . . . . . . . . . . . . . . 150
storage pocket in the seat . . . . . . . . . . . . . . . . 150
Sun visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Switch hazard warning lights . . . . . . . . . . . . . . . . . . . 141
Switching off the engine . . . . . . . . . . . . . . . . . . . 171
Switching off the lights . . . . . . . . . . . . . . . . . . . . 137
Switching on the lights . . . . . . . . . . . . . . . . . . . . 137
Switching the ignition on and off . . . . . . . . 30, 168
System Easy Connect . . . . . . . . . . . . . . . . . . . . . . 118
T Taking care of your vehicle . . . . . . . . . . . . . . . . . 256 interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Technical data roof load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Technical specifications . . . . . . . . . . . . . . . . . . . . 285
Temperat
ure display
engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
outside temperature . . . . . . . . . . . . . . . . . . . . . . 39
Temporary spare wheel . . . . . . . . . . . . . . . . . . . . 283
Tightening the belt . . . . . . . . . . . . . . . . . . . . . . . . . 81
Tightening torque wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Tightening torque of wheel bolts . . . . . . . . . . . . 287
Tiptronic (automatic gearbox) . . . . . . . . . . 183, 185
Top speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Top Tether . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26, 29
Top Tether system . . . . . . . . . . . . . . . . . . . . . . 26, 29
Tow-starting . . . . . . . . . . . . . . . . . . . . . . . . . . . 67, 96
Tow-starting the engine . . . . . . . . . . . . . . . . . . . . . 97
Towing blind spot detector (BSD) . . . . . . . . . . . . . . . . 225
special characteristics . . . . . . . . . . . . . . . . . . . 225
Towing a trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Towing bracket retrofitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Towing bracket device . . . . . . . . . . . . . . . . . . . . . 245 ball coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
operation and care . . . . . . . . . . . . . . . . . . . . . . 249
Towing the vehicle . . . . . . . . . . . . . . . . . . . . . . 66, 96
Towline anchorage . . . . . . . . . . . . . . . . . . . . . . . . . 66 rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Tow rope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Traction control system . . . . . . . . . . . 177, 178, 179 control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 connecting . . . . . . . . . . . . . . . . . . . . . . . 251, 252
driving with a trailer . . . . . . . . . . . . . . . . . . . . . 252
electrical socket . . . . . . . . . . . . . . . . . . . . . . . . 251
hitching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286 parking Aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
rear lights
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
safety lug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
tow rope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Trailer turn signals control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Trailer weights . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Transporting children . . . . . . . . . . . . . . . . . . . . . . . 88
Transporting items fastening rings . . . . . . . . . . . . . . . . . . . . . . . . . 154
roof carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
roof carrier system . . . . . . . . . . . . . . . . . . . . . . 156
Transporting objects roof carrier system . . . . . . . . . . . . . . . . . . . . . . 157
Trim parts: cleaning . . . . . . . . . . . . . . . . . . . . . . . 262
Turn signal lever . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Turn signals control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Tyre Mobility System . . . . . . . . . . . . . . . . . . . . . . . 60 components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
inflating a tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
sealing a tyre . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
see also Anti-puncture kit . . . . . . . . . . . . . . . . . 94
Tyre pressure monitoring system . . . . . . . . . . . . 280
Tyre pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Tyre profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Tyre repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Tyre repair kit see Anti-puncture kit . . . . . . . . . . . . . . . . . . . . . 94
Tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278 changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
new tyres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
pressure . . . . . . . . . . . . . . . . . . . . . 279, 280, 282
run-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
useful life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
wear indicators . . . . . . . . . . . . . . . . . . . . . . . . . 280
with directional tread pattern . . . . . . . . . 65, 279
302

Index
Tyre tread depth . . . . . . . . . . . . . . . . . . . . . . . . . . 280
T y
r
e wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
U Unfastening the seat belt . . . . . . . . . . . . . . . . 19, 80
Unlocking and locking by remote control . . . . . . . . . . . . . . . . . . . . . . . 124
with Keyless Access . . . . . . . . . . . . . . . . . . . . . 129
with the central lock button . . . . . . . . . . . . . . . 128
Unlocking manually rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Upholstery: cleaning alcantara . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
USB/AUX-IN Port . . . . . . . . . . . . . . . . . . . . . . . . . 123
V Vanity mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Vehicle data sticker . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
identification data . . . . . . . . . . . . . . . . . . . . . . 285
identification number . . . . . . . . . . . . . . . . . . . . 285
raising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
unlocking and locking with Keyless Access . . 129
vehicle identification number . . . . . . . . . . . . . 285
Vehicle battery . . . . . . . . . . . . . . . . . . . . . . . 57, 276 assisted starting . . . . . . . . . . . . . . . . . . . . . . . . . 67
changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
connecting and disconnecting . . . . . . . . . . . . 276
disconnect and connect . . . . . . . . . . . . . . . . . . . 42
electrolyte level . . . . . . . . . . . . . . . . . . . . . . . . 277
winter conditions . . . . . . . . . . . . . . . . . . . . . . . 276
Vehicle care windscreen wipers service position . . . . . . . . . 69
Vehicle documentation compartment . . . . . . . . 150 Vehicle interior monitoring and anti-tow system 134
activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Vehicle paint code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Vehicle paintwork maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
polishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
products for vehicle maintenance . . . . . . . . . . 256
Vehicle seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Vehicle tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Vehicle underbody protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Vehicle washing . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Ventilation slits . . . . . . . . . . . . . . . . . . . . . . . . . . 153
W Warning and control lamps . . . . . . . . . . . . . . . . . 117 adaptive cruise control . . . . . . . . . . . . . . . . . . . 211
airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
applying the brake . . . . . . . . . . . . . . . . . 205, 211
audible warning signal . . . . . . . . . . . . . . . . . . 117
cruise control system (CCS) . . . . . . . . . . . . . . . 198
engine management . . . . . . . . . . . . . . . . . . . . 194
engine pre-heating/fault system . . . . . . . . . . . 195
for seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
gear change . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
instrument panel . . . . . . . . . . . . . . . . . . . . . . . . 45
instrument panel display . . . . . . . . . . . . . . . . . . 46
speed limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Start-Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Warning messages red . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
yellow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Warning symbols . . . . . . . . . . . . . . . . . . . . . . . . . 117 see also Warning and control lamps . . . . . . . . 117 Warning triangle . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Washin
g the vehicle . . . . . . . . . . . . . . . . . . . . . . . 257
adhesive sheets . . . . . . . . . . . . . . . . . . . . . . . . 258
care of the vehicle exterior . . . . . . . . . . . . . . . . 257
high pressure cleaners . . . . . . . . . . . . . . . . . . . 258
sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Wheel balance . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Wheel bolts . . . . . . . . . . . . . . . . . . . . . . . . . . 63, 287 anti-theft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
caps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
tightening torque . . . . . . . . . . . . . . . . . . . 65, 282
Wheel cover removing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278, 287 central wheel trim . . . . . . . . . . . . . . . . . . . . . 61, 62
changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
new wheels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
removing and fitting . . . . . . . . . . . . . . . . . . . . . . 64
snow chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Windows electric . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18, 135
removing ice . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Window wiper . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Window wiper blade . . . . . . . . . . . . . . . . . . . . . . . . 32
Windscreen and rear window wiper blades . . . . . 96
Windscreen defrosting . . . . . . . . . . . . . . . . . . . . . 162
Windscreen washer . . . . . . . . . . . . . . . . . . . 57, 143
Windscreen washer water checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
filling amounts . . . . . . . . . . . . . . . . . . . . . . . . . 276
topping up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Windscreen wiper . . . . . . . . . . . . . . . . . . . . . . . . . 143
Windscreen wiper blades cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
303