Mercedes-Benz 190 E 2.3 1991, Руководство пользователя

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Supplemental Restraint System
(SRS)
The SRS uses two crash severity
levels (thresholds) to activate either
the ETR or airbag or both. Activation
depends on exceeding the thresholds
and fastening of the seat belt.
Seat belt fastened
• first threshold exceeded:
ETR activates
• second threshold exceeded:
airbag also activates
Seat belt not fastened
• first threshold exceeded:
airbag activates, but not ETR
Driver and front passenger systems
operate independently from each
other.
Emergency Tensioning
Retractor (ETR)
The seat belts for the front seats are
equipped with emergency tensioning
retractors. These tensioning retractors
are located in each belt’s inertia reel
and become operationally ready with
the key in steering lock position 1 or 2.
The emergency tensioning retractors
are designed to activate only when the
seat belts are fastened during frontal
and front-angled impacts exceeding
the first threshold of the SRS. They
remove slack from the belts in such a
way that the seat belts fit more snugly
against the body restricting its forward
movement as much as possible.
In cases of other frontal impacts,
roll-overs, certain side impacts, rear
collisions, or other accidents without
frontal forces, the emergency tension­
ing retractors will not be activated. The
driver and passengers will then be
protected by the fastened seat belts
and inertia reel in the usual manner.
For seat belt and emergency tension­
ing retractor safety guidelines, see
page 46.
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