Audi q7 2017 - Active Safety Systems; Audi pre-sense Introduction

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Audi pre-sense
Audi pre-sense is able to initiate actions that protect occu-
pants and other road users in certain critical situations.
This is made possible by networking the various in-car
systems which communicate continuously on the data bus.
Other control modules are able to evaluate this data and
take appropriate action.
Please note that Audi pre sense cannot prevent collisions.
It serves only to assist the driver and it can reduce the
severity of the collision. It should also be noted that not all
objects or lane makings can be detected by the sensor or by
the camera. The individual functions of Audipresense are
described in greater detail below.
Audi pre-sense basic PR no. 7W1
Audi pre sense city PR no. 6K8
Audi pre-sense front PR no. 8T3 / 8T8
Audi pre sense rear
inclusive of pre sense basic
PR no. 7W3
Pre sense basic
With Audipresensebasic, the following actions can be
initiated:
• Belt slack reduction.
• Partial or full tensioning of the electrically reversible
safety belt tensioners.
Denition and function of belt slack reduction system for reversible safety belt tensioners
In certain situations, for example, when wearing a thick
winter jacket, it may be the case that the safety belt is not
tight tting to the body after the reversible safety belt
tensioners deploy. In such a case, the mechanical unreeling
force of the automatic safety belt retractor is less than the
force required to compress the thick winter jacket. The
distance which the safety belt can travel until it ts the
front occupants perfectly is referred to as "belt slack".
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• Closing the panoramic glass sunroof.
• Closing the side windows.
• Switching on the emergency warning ashers.
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The safety belt is unreeled with dened force by the revers-
ible seat belt tensioners under the following conditions.
This enables any existing belt slack to be reduced.
• If the vehicle reaches a speed of about 9.3 mph (15
km/h) after starting the engine and traveling forwards.
• If the vehicle has not reached a speed of 9.3 mph (15
km/h) about 10seconds after starting the engine and
traveling forwards.
Safety belt ts rightly
(minimum belt slack)
Safety belt on "thick" clothing
(more belt slack)
Active safety