Airbag system161
Using the systemSafetyDriving TipsGeneral MaintenanceBreakdown assistanceTechnical Data
•When disposing of vehicle or parts of the airbag system, it is important
to comply with the national legal requirements.
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 front side airbag* on the side of the car at
which the collision occurs, is deployed toge ther with the rear side airbag and the
head airbag*.
In certain accident situations, the front airbags as well as the side and 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 indication of a fire in the vehicle.
•the dash panel must be replaced afte r the front passenger airbag has been
deployed.
•in the event of an accident in which the airbags are deployed:
− the interior lighting comes on (if the swit ch for the interior light is in the door
contact position),
− the hazard warning light is switched on,
− all the doors are unlocked,
− the battery in the luggage compartment* is switched off;
− the fuel supply to the engine is interrupted.
Front airbag
Description of the front airbags
The airbag system is not a substitute for the seat belt!
WARNING (continued)
Fig. 154 Driver airbag in the
steering wheel
NKO B6 20.book Page 161 Wednesday, March 26, 2008 3:15 PM
Wheels and Tyres
222
Wheels and Tyres
Wheels
General 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 angles 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. Unusual 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 contact 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 the use of unidirectional tyres
⇒page 226.
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 life
The 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. 195 An opened fuel filler
flap with the tyre inflation
pressure table
NKO B6 20.book Page 222 Wednesday, March 26, 2008 3:15 PM
Wheels and Tyres
226
Winter tyres
The 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 222, fig. 195 .
Winter tyres no longer offer the same winter performance once the tyre tread has
worn down to a depth of about 4 mm.
Ageing also causes winter tyres to lose most 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 224,
⇒ .
You can fit winter tyres of a lower speed category 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 exceeding the permissible maximum speed.
Please pay attention to the notes if you decide to fit winter tyres ⇒page 222.
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 direction, please adopt a
cautious style of driving as the tyre is no longer able to provide optimal grip and
handling in such a situation. This particul arly important on wet roads. Please refer
to the notes ⇒page 231, “Spare wheel”.
You should have the defective tyre replac ed as soon as possible and restore the
correct direction of rotation on all tyres
Snow chains
Snow chains must only be mounted on the front wheels.
NKO B6 20.book Page 226 Wednesday, March 26, 2008 3:15 PM
Technical Data
256
Vehicle data sticker
The vehicle data sticker ⇒page 255, fig. 231 is located on the floor of the luggage
compartment 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 - vehicles with DPF ⇒page 186.
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 (together with
a VIN bar code).
Engine number
The engine number is stamped into the engine block.
Type plate (production plate)
Is located on the left midd le pillar of the bodywork.
Homologation sign
The homologation sign is located on the lo ck carrier. Vehicles for certain countries
do not have an homologation sign.
Sticker on inside of fuel filler flap
The sticker is affixed to the inside of the fuel filler flap. The sticker contains the
following data:
•The prescribed types of fuel,
•Tyre si z 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 consumption 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.
Note
•Please note that the information stated in the official vehicle registration
documents always takes priority.
A1
A2
A3
A4
A5
NKO B6 20.book Page 256 Wednesday, March 26, 2008 3:15 PM