Airbags and new restraint systems

The Alfa 159 Sportwagon features innovative restraint systems (pretensioners on the clasp and decreasing load limiters on the seat-belts) and front seats with an 'anti-whiplash' device which brings the head-restraint nearer to the occupant's neck in the event of rear impact. But the new model really stands out for its array of airbags: all versions of the Alfa 159 Sportwagon are available with up to eight airbags (seven are always standard equipment). First of all, two new devices designed to protect the driver's knees (and those of the passenger on request), by preventing any contact with the facia, guaranteeing the highest safety levels.

Added to this are two dual stage front airbags, for the driver (with a capacity of 60 litres) and the passenger (120 litres). They are controlled by an electronic control unit on the tunnel, which assesses the intensity of the impact by sensors calibrated in the laboratory by a series of crash tests. The system incorporates a diagnostic system that verifies the components electronically, and these are tested by a computer that constantly monitors their operation. The airbags are not activated by low intensity accidents (such as a rear bump or one caused by a parking manoeuvre) or stress not caused by a collision (e.g. a pothole taken at speed). The front passenger bag can be deactivated manually by a switch at one end of the facia using the ignition key, to allow a child seat to be mounted facing backwards (the pretensioner remains active).

To protect the pelvis and chest of front seat passengers in a side-on collision, the Alfa 159 Sportwagon provides two sidebags built into the squab of the front seats, where they protect the occupants better, regardless of their stature, position or seat adjustment. The geometry also allows a 12-litre cushion to be used, smaller than would be necessary to guarantee the same level of protection if the airbag were mounted in the door. The sensors that activate these airbags are in the central pillars. In the event of an accident, they receive a signal of lateral acceleration and send it to the electronic control unit that controls the front airbags and seat-belt pretensioners. All the systems are managed together to ensure total, smooth protection of all occupants.

The Alfa 159 Sportwagon also fits curtain bags designed to inflate downwards along the windows, to protect occupants' heads in a side-on collision. The curtain bags adopted on the new model are more protective than other systems because they inflate faster and are less invasive for passengers.

They open from the top down and their movement cannot cause secondary injury to the occupants' arms. They also effectively protect the heads of both front and rear passengers because they cover the whole windows and guarantee protection even if the car overturns. The two bags (one for the left and one for the right) are positioned underneath the roof longitudinals, folded into a closed compartment. At the appropriate moment, the cover folds, allowing the bags to inflate and descend.

The new model also features a mechanism that releases the pedals in a frontal impact, to protect the legs.


Bi-Xenon headlights

Excellent visibility by day and at night and in tunnels is an important aspect of preventive safety. On request, the Alfa 159 can be equipped with Xenon full and dipped beam headlights, which emit a brighter, whiter light, with excellent efficiency in all atmospheric conditions. In a gas discharge lamp, the filament of the conventional bulb is replaced by two electrodes a few millimetres apart, which generate an electro-voltaic discharge in an environment saturated with low pressure Xenon. These lamps provide three times the luminous intensity and lifespan of normal halogen lamps.


Braking system

The power-assisted hydraulic braking system is the most competitive in its class and upholds the Alfa Romeo tradition in this field. It comprises two cross-over independent circuits, and is particularly effective, guaranteeing prompt, smooth braking combined with minimal stopping distances: 36 m to decelerate from 100 Km/h to 0. The most powerful versions mount 330 mm ventilated discs, and aluminium callipers with four pistons on the front wheels, and 292 mm ventilated discs with floating callipers on the rear wheels.

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