Fiat Stilo Multi Wagon | Part Four

Fiat Stilo Multi Wagon

 

Side Curtain Airbags

Full length, optional side curtain airbags, located under the roof rails, deploy to provide protection to passengers’ heads in the case of side impact. Opening from top to bottom to remove the risk of secondary damage to occupants’ arms on activation, the bags are faster to inflate and less invasive than comparable systems in this segment.

Central Control Unit

These comprehensive passive systems are supervised by a central control unit which constantly monitors signals from various sensors throughout the new Wagon: Two-way accelerometers and central panel sensors are responsible for activating the side and curtain airbags. A Crash Severity Algorithm identifies crash severity and controls the Multistage front airbags. An Early Crash Sensor located behind the radiator grille allows the front airbags to deploy fully even before the occupants have begun to move. And seat belt fastening detectors recognise an un-harnessed passenger, modifying the airbag deployment to compensate for the higher risk of injury and deactivating the seatbelt pretensioner.

Regardless of impact, the central control unit will not activate a passive safety system if the relevant occupant is in no danger of striking the interior. The unit will continue to function in the event of electrical system failure.

ISOFIX Attachments

The Multi Wagon is fitted with ISOFIX attachments to guarantee the correct use of child seats. The bracket sizes and settings are to European standards to ensure the seat may be re-used in any other car.

Central Locking With Deadlocks

The new Wagon’s central locking system is equipped with a range of functions that may be customised via the My Car control panel. Options include staged door unlocking, with first driver and then passenger doors unlocked by pressing the key fob remote control twice in succession, independent locking of the boot and doors, and automatic locking of both boot and doors when the car exceeds 13 mph.

Deadlocks, fitted as standard across the Multi Wagon range, set the interior door handles and all lock linkages to neutral, rendering any tool used to force door and lock mechanisms ineffective. To minimise the risk of an individual being locked inside the car, the deadlocks can only be activated by a second press on the key fob remote locking button.

Active Safety

Via self-ventilating front discs and standard disc brakes at the rear, the Stilo Multi Wagon offers the full range of braking, traction control and stability systems on the market today: ABS anti-lock brakes, complete with electronic brakeforce distribution, ASR to limit wheel slip during acceleration, MSR to modulate brake torque whilst changing down, and a sophisticated ESP to control stability through bends.

ABS

An advanced BOSCH ABS system, featuring four active sensors, four channels and a 12 valve control unit, is fitted as standard across the Multi Wagon range. The system is complemented by an Electronic Brakeforce Distributor (EBD) that governs braking action on the rear axle to prevent the wheels locking and ensure full control of the car in all situations. The system also adapts its operation to wheel grip conditions and brake pad efficiency to reduce pad overheating.

ASR And MSR

The Multi Wagon can be equipped, as an option, with a sophisticated Anti Slip Regulation system (ASR) to restrict wheel slip in cases of reduced grip. ASR traction control works at any speed, and prevents the driven wheels from slipping by adjusting torque according to available levels of grip.

The MSR (Motor Schleppmoment Reelung) cuts in when a gear is shifted down abruptly under conditions of low grip. The system restores torque to the engine to prevent skidding as a result of wheel lock-up.

Both ASR and MSR are available when ESP is ordered as an option, along with Brake Assist.

Brake Assist

On Multi Wagon models without ESP, emergency brake assistance takes the form of Emergency Valve Assistance (EVA) a mechanical system located inside the brake servo. On vehicles fitted with ESP, the function is carried out electronically by the ABS control unit and is known as Hydraulic Brake Assistance (HBA). Both systems carry out an identical function with equal efficiency.

ESP
All 1.8 litre petrol versions of the new Wagon come with a permanently engaged Electronic Stability Programme (ESP) – optional across the rest of the range – which activates to help control the car when stability is at risk.

Via sensors monitoring car body rotation, lateral acceleration and steering wheel input, the system assesses vehicle stability and the proximity of either an understeering or oversteering slide. The system restores stability by applying smoothly modulated braking to the appropriate wheel individually, and simultaneously reducing engine power. Engine power reduction is carefully modulated to ensure a minimum of performance loss and, hence, continued driving satisfaction.

Published 14 February 2003 Melanie Carter

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