Page 50 of 211

When an airbag is triggered, it is inflated by a gas generator. This causes the airbag covers to
break, and the airbags inflate forcefully to cover their deployment zones within milliseconds. Once a
vehicle occupant wearing a seat belt starts to sink into the inflated airbag, the gas inside the airbag
starts to escape to cushion the occupant and slow down their movement. This can reduce the risk
of severe and fatal injuries. A triggered airbag will not always prevent other injuries such as
swelling, bruising and grazing. Deployment of a triggered airbag can also result in frictional heat.
Airbags provide no protection for the arms or lower body.
The most important factors for triggering the airbag are the type of accident, the angle of impact,
the vehicle speed and the type of object with which the vehicle collides. Therefore, visible damage
to the vehicle does not always mean that the airbag should have been triggered.
The triggering of the airbag system depends on the vehicle deceleration rate caused by the collision
and registered by the electronic control unit. If this rate is below the reference value programmed
into the control unit, the airbags will not be triggered, even though the vehicle may be badly
damaged as a result of the collision. Vehicle damage, repair costs or even the lack of vehicle
damage in an accident do not necessarily give an indication of whether an airbag should inflate or
not. It is not possible to define a range of vehicle speeds and reference values, since the
circumstances will vary considerably between one collision and another. It is therefore impossible to
cover every possible kind and angle of impact that would trigger the airbags. Important factors in
the triggering of the airbag include the nature (hard or softyf R I W K H R E M H F W W K D W W K H Y H K L F O H K L W V W K H
angle of impact, and the vehicle speed.
Airbags only serve as a supplement to the three-point seat belt in some accident situations when
the vehicle braking is sufficient to trigger the airbags. Airbags can only be triggered once and only
in certain situations. The seat belts are always there to provide protection in situations in which the
airbags are not triggered or have already been triggered. For example, if the vehicle collides with a
further vehicle following the initial collision, or is hit by another vehicle.
The airbag system is part of the vehicle's overall passive safety concept. The airbag system can
only work effectively when the occupants are wearing their seat belts correctly and have assumed a
proper sitting position ⇒ Adjusting the seat position.
Components of the vehicle safety concept
The following vehicle safety equipment makes up the vehicle's safety concept to reduce the risk of
severe and fatal injuries. Some of this equipment may not be fitted in your particular vehicle. It may
not be available at all in some countries.
\f
Page 129 of 211

Windscreen washer fluid level Windscreen wiper and washer
Engine oil level Engine oil
Engine coolant level Coolant
Brake fluid level Braking, stopping and parking
Tyre pressure Wheels and tyres
equipment, service fluids and unsuitable tools are not available ⇒ Preparation for working in the
engine compartment! The work should be carried out by a qualified workshop if you are
uncertain. Please ensure that the following are checked regularly, preferably every time you fill
the tank:
Vehicle lighting necessary for traffic safety:
- Turn signals
- Side lights, dipped beam headlights and main beam headlights
- Tail light cluster
- Brake lights
- Rear fog light ⇒ Lights
Information on changing bulbs ⇒ Changing bulbs.
Fuel
Introduction
This chapter contains information on the followingsubjects:
⇒ Petrol
⇒ Natural gas
Different engines require different fuels. The factory-fitted sticker on the inside of the tank flap
indicates the fuel type that is required for your particular vehicle.
Volkswagen recommends using low-sulphur or sulphur-free fuels, to help reduce fuel consumption
and prevent damage to the engine.
If the engine is not running smoothly or begins to judder, this can indicate poor or inadequate fuel
quality, e.g. water in the fuel. If these symptoms appear, reduce the vehicle speed immediately and
drive to the nearest qualified workshop at medium engine speeds, avoiding high engine loading. If
these symptoms occur immediately after the vehicle has been refuelled, switch the engine off as
soon as it is safe to do so and seek expert assistance. This can help to prevent further damage.
Additional information and warnings:
\f
Page 136 of 211

If possible, only use Volkswagen-approved engine oil ⇒. The engine oils listed are multigrade
high-lubricity oils.
Engine oils are constantly being developed and improved. A Volkswagen dealership is always kept
up to date on innovations. Volkswagen therefore recommends having engine oil changes done by a
Volkswagen dealership.
The quality of the engine oil is not only tailored to the requirements of engines and exhaust gas
treatment systems, but also to fuel quality. Due to the way in which a combustion engine works,
engine oil always comes into contact with combustion residues and fuel, which has a knock-on
effect on the ageing process of the oil.
The quality of fuels can vary greatly between individual markets and this must be taken into account
when selecting the correct engine oil.
The use of engine oils compliant with the VW 504 00 requires a fuel quality compliant with EN 228
(petrolyf R U I X H O R I D Q G H T X L Y D O H Q W T X D O L W \ Engine oils compliant with VW 504 00 are therefore
unsuitable for use in a large number of markets.
Permitted engine oil
specifications ⇒
Alternative engine oil
specifications⇒
Engine
type
Fixed service QI1, QI2, QI3,
QI4, QI7 (based on
time/distance travelledyf
Only in the EU, Switzerland,
Norway, Japan and Australia
Petrol
enginesVW 502 00VW 504 00
Natural gas
engineVW 502 00-----
Alternative engine oil specifications may only be used in fixed services QI1, QI2, QI3, QI4 and
QI7, and only when fuel of a quality compliant with EN 228 (petrolyf R U I X H O R I D Q H T X L Y D O H Q W T X D O L W \
is available in the particular country.
Checking the engine oil level and refilling engine oil
Fig. 121 Oil dipstick with markings
Fig. 122 In the engine compartment: engine oil filler cap
First read and observe the introductoryinformation and safety warnings⇒
Introduction
ayf
\f