Audi A6 Typ 4G: Belt tensioners
How safety belt pretensioners work
In front, side and rear-end collisions above a particular severity and in a rollover, safety belts are tensioned automatically.
Reversible safety belt tensioners
The safety belts on the front seats are equipped with power reversible tensioners. The following functions are available when the driver's/front passenger's safety belts are fastened:
- Automatic tensioners: at the start of a drive, the safety belts automatically adjust to the passenger after a certain time period or vehicle speed. To switch the automatic tensioners off, select the following in the MMI: [CAR] function button > (Car) systems > Vehicle settings > Seats > Driver's seat or Passenger's seat > Automatic belt tensioner > Off.
- In certain driving situations, the safety belts may tighten with a reversible tensioning function.
- The safety belts may also tighten with this reversible tensioning function in minor collisions.
Pyrotechnic safety belt pretensioners
The safety belts are equipped with safety belt pretensioners. The system is activated by sensors in front, side and rear-end collisions of great severity and in a rollover. This tightens the belt and takes up belt slack. Taking up the slack helps to reduce forward occupant movement during a collision.
WARNING
- It is possible for the pretensioners to deploy incorrectly.
- The pyrotechnic system can only provide protection for one collision. If the pyrotechnic pretensioners deploy, the pretensioning system must be replaced.
Tips
The pyrotechnic safety belt pretensioners can only deploy once.
- The safety belt pretensioners do not deploy in minor frontal, side and rear-end collisions.
- A fine dust is released when the pyrotechnic safety belt pretensioners deploy. This is normal and is not caused by a fire in the vehicle.
- The relevant safety requirements must be observed when the vehicle or components of the system are scrapped. A qualified dealership is familiar with these regulations and will be pleased to pass on the information to you.
- Be sure to observe all safety, environmental and other regulations if the vehicle or individual parts of the system, particularly the safety belt or airbag, are to be disposed. We recommend you have your authorized Audi dealer perform this service for you.
