Airbag system
175
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
When are the airbags deployed?The airbag system is designed in such
a way that the driver and front passenger
airbag are deployed in the event of a
frontal collision
of major severity.
In the case of a
violent side crash
, the side airbag* on the side on which the colli-
sion occurs, is depl
oyed together with the head airbag*.
In certain accident situa
tions, the front airbags, side airbags as well as the relevant
head airbag may be
deployed together.
The airbags
are not deployed
in the case of
minor
frontal and side collisions, in the
case of rear-end collisi
ons and vehicle rollover.
Deployment factors It is not possible to state globally which
deployment conditions apply to the airbag
system in every situation as the circumstances which exist in the case of accidents vary greatly. An important role in this case
, for example, is played by factors such as
the type of object (hard, soft) against whic
h the vehicle impacts or the type of object
against which the vehicle impa
cts, the angle of impact,
the relative vehicle speed
during the accident etc. A decisive factor for the deployment of the airbags is the deceleration which occurs during a collision. The control unit analyses
the nature of the collision and activates
the relevant restraint system. If the vehi
cle deceleration which occurs and is meas-
ured during the collision remains below the prescribed reference values specified in the control unit, the airbags are not
deployed although the vehicle may well
suffer severe damage to the bodywork
as a consequence of the accident.
The airbags are not deployed if:•
ignition off,
•
a minor frontal collision,
•
a minor side collision,
•
a rear-end collision,
•
Rollover of the vehicle.
Note
•
A grey white, non harmful gas is released when airbag is inflated. This is
perfectly normal and is not an indi
cation of a fire in the vehicle.
•
In the event of an accident in which the airbags are deployed: − The interior lighting comes on (if the switch for the interior light is in the door contact position), − The hazard warning light is switched on, − All the doors are unlocked, − the fuel supply to the engine is interrupted.
Front airbagDescription of the front airbags The airbag system is not a substitute for the seat belt!
Fig. 176 Driver airbag in the steering wheel
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Wheels and Tyres
238
Wheels and TyresWheelsGeneral information•
New tyres do not offer optimal grip at first and should therefore be run in for
about 500 km at a moderate speed and an appropriately cautious style of driving. You will also profit from longer tyre life.•
The tread depth of new tyres may differ because of design features and the
configuration of the tread (d
epending on the type of tyre and the manufacturer).
•
Drive over curbs on the side of the road
and other such obstacles slowly and,
where possible, at a right angle in order
to avoid damage to tyres and wheel trims.
•
Inspect your tyres from time to time
for damage (punctures, cuts, splits and
bulges). Remove foreign bodi
es from the tyre profile.
•
Damage to tyres and wheels is frequent
ly not visible. Unus
ual vibrations or
pulling of the vehicle to one side
could be a sign of tyre damage.
Please reduce
your speed immediately and stop if
you suspect that a wheel is damaged.
Inspect the tyres for signs of damage (bulges,
splits, etc.). If no
visible damage is
present, please drive at an appropriately slow speed and carefully to the nearest specialist garage in order to have your vehicle inspected.•
Also protect your tyres from cont
act with oil, grease and fuel.
•
Immediately replace any dust caps of
the valves which have got lost.
•
Mark wheels before removing them so th
at their previous direction of running
can be maintained when
mounted them again.
•
Always store wheels or tyres which been removed in a cool, dry and, where
possible, dark place. Tyres which are not
fixed to a wheel trim should be stored
upright. Unidirectional tyres* The direction of rotation of the tyres is marked by arrows on the wall of the tyre. This indicates the direction of rotation of the tyre, and it is essential that the tyres are fitted on to run in this direction. Only then are the tyres able to provide the optimal properties in terms of grip, low no
ise, wear-and-tear and aquaplaning.
Further information concerning th
e use of unidirectional tyres
⇒page 242.
WARNING
•
New tyres during the first 500 km do not offer optimal grip and should
therefore be run appropriately - risk of accident!•
Never drive with damaged tyres - risk of accident!Note
Please observe the various differing legal requirements regarding tyres.Tyre lifeThe life of your tyres very much depends on the following points: Tyre pressure The working life of tyres will be shortened co
nsiderably if the tyres are insufficiently
or over-inflated and this will have an advers
e effect on the handling of your vehicle.
Correctly inflated tyres are of partic
ular importance when travelling at
high speeds
.
It is therefore good to check the pressure
at least once a month and also before
Fig. 218 An opened fuel filler flap with a tyre size and tyre inflation pressure table
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Wheels and Tyres
242
•
The wheel bolts must be clean and must
turn easily. However, they must
never be treated with grease or oil.•
If the wheel bolts are tightened to a too low tightening torque, the rim
can lossen when the car is moving - risk of accident! A tightening torque which is too high can damage the bolts and threads and this can result in permanent deformation of the contact surfaces on the rims.
Caution
The prescribed tightening torque of the wheel bolts for steel and light alloy wheels is 120 Nm.Winter tyresThe handling of your vehicle will be signi
ficantly improved when driving on wintry
roads if you fit winter tyres. Summer tyres do not offer the same grip on ice, snow and at temperatures below 7 °C because of
their construction (width, rubber blend,
tread pattern). This particularly applie
s to vehicles which
are equipped with
low-
profile tyres
or high-speed tyres
(code index H or V on wall of tyre).
Winter tyres must be mounted on all four
wheels to obtain the
best handling char-
acteristics. You must only fit those types of winter tyre
which are approved for your vehicle. The
permissible
sizes of winter tyres
are stated in your vehicle documents. Approvals
may differ because of
national legislation.
Please remember that the tyres should be in
flated to 20 kPa (0.2 bar) more than is
the case for summer tyres
⇒page 238.
Winter tyres no longer offer the
same winter performance once the
tyre tread
has
worn down to a depth of about 4 mm. Ageing
a l s o c a u s e s w i n t e r t y re s t o l o s e m o s t
of their winter performance properties
- even in cases where the remaining tread depth is still clearly more than 4 mm. Speed restrictions
apply to winter tyres as
well as to summer tyres
⇒page 240,
⇒
.
You can fit winter tyres of a lower speed ca
tegory to your vehicle provided that you
also do not drive faster than the permissible maximum speed for such tyres, even if the possible maximum speed of your ve
hicle is higher. The
corresponding tyre
category can damage the tyres when ex
ceeding the permissible maximum speed.
Please pay attention to the notes if
you decide to fit winter tyres
⇒page 238.
You can also fit so-called “all-year tyres” instead of winter tyres.Please contact your specialist garage if there are any points which are not clear who will be able to provide you with information regarding the maximum speed for your tyres.
WARNING
You must on no account drive your car at more than the permissible maximum speed for your winter tyres -
risk of an accident resulting from
tyre damage and loss of control over your car.
For the sake of the environment
Fit your summer tyres on again in good time since summer tyres offer you better grip and handling on roads which are free of snow and ice as well as ar tempera- tures below 7 °C - the braking distance is shorter, there is less tyre noise, tyre wear is reduced and fuel consumption is reduced.
Note
Please observe the various differing legal requirements regarding tyres.Unidirectional tyres*The direction of rotation of the tyres is marked by
arrows on the wall of the tyre
.
This indicates the direction of
rotation of the tyre, and it is essential that the tyres
are fitted on to run in this direction. On
ly then are the tyres able to provide the
optimal properties in terms of grip, lo
w noise, wear-and-tear and aquaplaning.
Should it be necessary to fit on a spare
wheel in exceptional cases with a tyre not
dedicated to the running direction or in o
pposite running direct
ion, please adopt a
WARNING (continued)
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Fuses and light bulbs
261
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Technical Data
Electrically adjustable
seats are protected by
automatic circuit breakers
, which
switch on again automatically after a fe
w seconds after the overload has been
eliminated.BulbsChanging bulbsThe relevant lamp must always be switch
ed off before a light bulb is replaced.
Defect light bulbs should only be replaced
with light bulbs of the same type. The
designation is located on the light socket or the glass bulb. Changing certain bulbs is not something wh
ich you can do yourself, but requires to
be done by a specialist. Other parts of the vehicle must be removed in order to
12
Central locking control unit
10
13
Diagnostic socket, Light switch
10
14
Control unit for automatic gearbox, Selector lever lock
5
15
Central control unit - interior lights
5
16
Climatronic
10
17
Not assigned
18
Not assigned
19
Control unit for trailer detection
5
20
Not assigned
21
Cornering lights for the left and right side
10
22
Air blower for Climatronic
40
23
Front power window
30
24
Cigarette lighter
25
25
Rear window heaterRear window heater, Auxiliar
y heating (auxiliary heating
and ventilation)
2530
26
Power socket in the luggage compartment
20
27
Fuel pump relay, Injection valves (diesel engine)
15
28
Not assigned
29
Engine control unit, Crankcase ventilation heater
10
30
Control unit for automatic gearbox
20
31
Vacuum pump
20
32
Rear power window
30
33
Electric sliding/tilting roof
25
34
Control unit for convenience functions
20
35
Anti-theft alarm system
5
No.
Power consumer
Amperes
36
Headlight cleaning system
20
37
Front seat heating
30
38
Heated rear seats
30
39
Not assigned
40
Air blower for heating and air conditioning
40
41
Rear window wiper
15
42
Not assigned
43
Towing device
15
44
Towing device
20
45
Towing device
15
46
Heated windscreen washer nozzles
5
47
Relay for auxiliary heating
5
48
Not assigned
49
Light switch
5
No.
Power consumer
Amperes
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Technical Data
272
Identification detailsVehicle data sticker The vehicle data sticker
⇒fig. 256
is located on the floor of the luggage compart-
ment and is also stated in the Service schedule. The vehicle data sticker co
ntains the following data:
Vehicle identification number (VIN) Vehicle type Gearbox code, paint number, interior
equipment number, engine output,
engine code Partial description of the vehicle 7GG, 7MB, 7MG - vehicles with DPF
⇒page 200
Vehicle identification number (VIN) The vehicle identification num
ber - VIN (vehicle body number) is stamped into the
engine compartment on the right hand shoc
k absorber dome. This number is also
located on a sign on the lower left hand edge below the windscreen. Engine number The engine number is stamped into the engine block. Type plate (production plate) The type plate is located in the lower area of the left centre column.
Homologation sign The homologation sign is located on the in
side of the bonnet next to the lock. Vehi-
cles for certain countries do no
t have an homologation sign.
Sticker on inside of fuel filler flap The stickers are affixed to the inside of the fuel filler flap and contain the following information:•
The prescribed types of fuel,
•
Tyre s iz e ,
•
Tyre pressure.
Fuel consumption according to the regulations (99/100/EU)Depending on the range of the special equipment, style of driving, traffic situation, weather influences and vehi
cle condition, the consumpt
ion values which in prac-
tice result when using the vehicle ca
n deviate from the indicated values.
Urban traffic The consumption measurement in urban traf
fic begins with starting of the cold
engine. Afterwards the normal
urban traffic is simulated.
Non-urban traffic For the consumption measurement in non-ur
ban traffic the vehicle, as in daily
motoring, is accelerated and braked several times in all gears. The vehicle speed changes within the range from 0 to 120 km/h. Combined traffic The consumption value in the combined traf
fic consists of 37%
from the value for
the urban traffic and of 63% from
the value for the non-urban traffic.
Fig. 256 Vehicle data sticker
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