939003549 - 7045 FRONT SEATS
Introduction
The seats are of vital importance in terms of comfort and safety: they are, in effect, the element that has to absorb the kinetic energy acquired by the body through the effect of stresses when cornering and during acceleration/deceleration.The shape of the front seats on the Alfa Romeo 159 increases travelling comfort while holding the occupants under all driving and road surface conditions. An antisubmarining ridge on the front of the seat prevents the passenger''s body slipping under the seat belt in the event of violent head-on impact.This also contributes in great measure to limiting injury to the abdomen and femur by reducing the body''s forward acceleration. The Alfa Romeo 159 is equipped with up-to-date devices to ensure the achievement of lasting comfort. These were designed on conjunction with the CONI Sport Medicine Institute biomechanical department.To enhance vibrational comfort and especially the absorption of vibrations produced from the road surface (e.g.: tram lines, etc.) the seats are equipped, in the area of the gluteus ischium-coccyx, with an efficient spring system with a flexible pack made up of thin steel wires coated in plastic and secured by two clips to the perimeter frame;To improve back support, the seat has a modern support system for the lumbar region specially designed to adapt fully to the back and support it tirelessly thanks to its considerable extension and operating range.In addition, the driver''s seat is height adjustable with a vertical travel of around 50 mm.The height adjustment is implemented through a ratchet lever with extremely reduced operating loads and is very easy to use.The guides slide lengthwise. They are a slight angle of 4.5° to raise the seat slightly when it is moved forwards.The combination of the seat height adjustment with the height and axial adjustment of the steering wheel makes it possible to produce the optimum driving position for an extremely wide range of drivers.The adjustment of the backrest angle is continuous and is regulated by a knob located in the area of the seat towards the outside of the passenger compartment to allow rake adjustment.The foam for the front seats is comfortable thanks to load carrying solutions (a parameter that mesures the capacity of the upholstery to yield under the weight of the body) that are differentiated depending on the area of the seat.Possible configurations
Driver''s seat| Function | A (6WM) | B(6WM) | C (6WM) | D (6WM) | E (8WM) | F (8WM) | G (8WM) | H (8WM) | I (8WP) | L (8WP) |
|---|---|---|---|---|---|---|---|---|---|---|
| Reach adjustment | manual | manual | manual | manual | manual | manual | manual | manual | eletrical | eletrical |
| Seat lift | manual | manual | manual | manual | manual | manual | manual | manual | eletrical | eletrical |
| Lumbar adjustment | manual | manual | manual | manual | manual | manual | manual | manual | manual | manual |
| Backrest adjustment | manual | manual | manual | manual | manual | manual | manual | manual | eletrical | eletrical |
| Cushion tilt adjustment | - | - | - | - | manual | manual | manual | manual | eletrical | eletrical |
| Height-adjustable head restraint | x | x | x | x | x | x | x | x | x | x |
| Tilting head restraint | - | x | - | x | - | x | - | x | x | x |
| Side Bag | x | x | x | x | x | x | x | x | x | x |
| Pretensioned belt branch | x | x | x | x | x | x | x | x | x | x |
| Heated seat | - | - | x | x | - | - | x | x | - | x |
| Function | A (4WM) | B (4WM) | C (8WM) | D (8WM) | E (8WP) | F (8WP) |
|---|---|---|---|---|---|---|
| Reach adjustment | manual | manual | manual | manual | eletrical | eletrical |
| Seat lift | - | - | manual | manual | eletrical | eletrical |
| Lumbar adjustment | - | - | manual | manual | manual | manual |
| Backrest adjustment | manual | manual | manual | manual | eletrical | eletrical |
| Cushion tilt adjustment | - | - | manual | manual | eletrical | eletrical |
| Height-adjustable head restraint | x | x | x | x | x | x |
| Tilting head restraint | - | - | - | x | x | x |
| Side Bag | x | x | x | x | x | x |
| Pretensioned belt branch | x | x | x | x | x | x |
| Heated seat | - | x | - | x | - | x |
Lumbar support
Driver and front passenger seat lumbar support adjustment is available as an optional extra or is fitted as standard depending on the version; a knob with a lever on the outside of the seat regulates a mechanism that adjusts the lumbar area of the backrest.
Front seat height and tilt adjustment
To raise or lower the seat, operate the lever at the side of the cushion in the rear area towards the door.By pulling the lever upwards the seat will rise one step; repeat the operation until the desired height is reached or until the mechanism is in the end of travel position. If the lever is moved downwards the seat will go down.To change the angle/position of the seat, operate the lever at the side of the cushion in the front area towards the door. By pulling the lever upwards the seat will be tilted towards the rear by one step; repeat the operation until the desired position is reached or until the mechanism is in the end of travel position. If the lever is moved downwards the seat will tilt forwards.Heated seats
A version with a seat heating system is available as an option.A three-position thermostat on the front outer side of the seat governs the operation of two heat pads in the cushion and in the backrest.Seats with electric adjustment
The version with electric adjustment, available as an option, is fitted with four electric motors, an electric control unit and a control keypad.The motors implement the following movements:- Reach adjustment (guides)- Tilt adjustment- Height adjustment (seat lift)- Backrest angle adjustmentThe control unit includes a control keypad.The control unit offers three different configurations that can be stored by the user and called up by operating one of three specific keys.
Head restraints
In rear impacts at low speed the most common injury is whiplash. To reduce the risk of this injury to a minimum, the vehicle is fitted with head restraints capable of retaining the head in the case of rear impacts preventing irregular or excessive stresses to the cervical group of the vertebral column. The size of the head restraint in relation to the position of the neck and the stiffness of the head restraint are therefore important with regard to the performance of this function.The following goals were set for this vehicle:- To minimise the distance between neck and head restraint- To ensure the adjustment range was sufficient to accommodate even very tall people.- Great stability during impact.The front head restraints have a height adjustment device that allows a movement of around 40mm, with a fastening to ensure stable and optimum positioning in all intermediate positions. The head restraint can also be tilted forward to increase comfort.The adjustment control does not have to be released to raise the head restraint.To lower the head restraint, on the other hand, it must be released using the button on the bush. When the head restraint button is released, it will lock in the nearest position.
Anti-whiplash device
The adjustable head restraint does not offer sufficient guarantee of being in the correct position when an accident occurs. To overcome this problem and increase safety in the event of rear impact, an antiwhiplash device is available as an option. This reduces the distance between head and head restraint following an impact.The seat is fitted with a sprung device that allows the head restraint to be brought closer to the occupant''s head in the event of rear impact and consequent pressing of the back against the backrest. This limits damage due to whiplash.
Sidebag and pretensioner
A chest-pelvis side bag module is installed on the outside of the backrest inside the trim. For more information refer to: See descriptions 5580C AIR BAG SYSTEM A seat belt pretensioner module is installed on the inside of the seat base. For more information refer to: See descriptions 5580C AIR BAG SYSTEM | During seat removal, refitting and movement, avoid grasping the sides of the seat. |
