Ford Escape: How does the airbag supplemental restraint system work? - Airbag Supplemental Restraint System (SRS) - Seating and Safety Restraints - Ford Escape Owner's ManualFord Escape: How does the airbag supplemental restraint system work?

The airbag SRS is designed to activate when the vehicle sustains a longitudinal deceleration sufficient to cause the airbag sensors to close an electrical circuit that initiates airbag inflation. The fact that the airbags did not inflate in a collision does not mean that something is wrong with the system. Rather, it means the forces were not sufficient enough to cause activation. Front airbags are designed to inflate in frontal and near-frontal collisions, not rollover, side-impact, or rear-impacts unless the collision causes sufficient longitudinal deceleration.

The airbags inflate and deflate

The airbags inflate and deflate rapidly upon activation. After airbag deployment, it is normal to notice a smoke-like, powdery residue or smell the burnt propellant. This may consist of cornstarch, talcum powder or sodium compounds which may irritate the skin and eyes, but none of the residue is toxic.

While the SRS is designed to help reduce serious injuries, contact with a deploying airbag may also cause abrasions, swelling or temporary hearing loss. Because airbags must inflate rapidly and with considerable force, there is the risk of death or serious injuries such as fractures, facial and eye injuries or internal injuries, particularly to occupants who are not properly restrained or are otherwise out of position at the time of airbag deployment. It is extremely important that occupants be properly restrained as far away from the airbag module as possible while maintaining vehicle control.

The SRS consists of:

• driver and passenger airbag modules (which include the inflators and airbags).
• seat-mounted side airbags. Refer to Seat-mounted side airbag system later in this chapter
• Safety Canopy System. Refer to Safety Canopy System later in this chapter.
• one or more impact and safing sensors.
• Safety belt pretensioners
• a readiness light and tone.
• diagnostic module.
• and the electrical wiring which connects the components.
• Front passenger sensing system. Refer to Front passenger sensing system later in this chapter.
• “Passenger airbag off” or “pass airbag off” indicator lamp. Refer to Front passenger sensing system later in this chapter.

The RCM (restraints control module) monitors its own internal circuits and the supplemental airbag electrical system wiring (including the impact sensors, the system wiring, the airbag system readiness light, the airbag backup power and the airbag ignitors).

inflation. Do not touch them after inflation. WARNING: Several air bag system components get hot after inflation. Do not touch them after inflation.

function again and must be replaced immediately. If the WARNING: If the airbag has deployed, the airbag will not function again and must be replaced immediately. If the airbag is not replaced, the unrepaired area will increase the risk of injury in a collision.

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