Volkswagen PHAETON - Service Manual download pdf (Page 28)

Passenger protection

Belt system

All seats on the Phaeton possess three-point

retracting seat belts with belt tension limiters. Fur-

thermore, all outside seats are fitted with pyro-

technical seat belt tensioners which are triggered

by the central control unit if the gravity of the

accident is deemed sufficient.

The 18-position seat version is also available with

an optional belt system which is fitted with an

additional automatic lap belt. This extra auto-

matic belt is attached to the side of the seat. In

conjunction with the automatic shoulder seatbelt,

it facilitates the simultaneous tightening of the

belt in the occupants' shoulder and lap area. In

the event of a collision, this leads to an early and

extremely effective coupling of the occupants

and vehicle.

The comfort mechanism

on the shoulder belt tensioner

A force greater than that used in conventional

belt buckles is required in order for the automatic

'Rollgurt' to retract the compound insertion

tongue into its starting position in the double

retractor system on the 18-position seat. However,

in order not to transmit this force to the vehicle

occupants, a mechanism in the automatic shoul-

der seatbelt is used which can vary the force

exerted on the belt.

If a seat allocation is recognised by means of a

belt buckle check, the mechanism reduces the

force in the automatic shoulder seatbelt when it

is being used. This prevents the seatbelt from

exerting too much pressure on the occupant's

upper body. The full force is once again availa-

ble when the seatbelt is released.

The mechanism is incorporated into the auto-

matic shoulder seatbelt.

270_033

Comfort

mechanism

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Volkswagen PHAETON - Service Manual Page 28