Supplemental Restraint System
(SRS)
Emergency Tensioning
Retractor (ETR)
In cases of other frontal impacts, roll-
overs, certain side impacts, rear
collisions, or other accidents without
frontal forces, the emergency
tensioning retractors will not be
activated. The driver and passenger
will then be protected by the fastened
seat belts and inertia reel in the usual
manner.
The SRS uses two crash severity levels
(thresholds) to activate either the ETR
or airbag or both. Activation depends
on the direction and severity of the
impact, exceeding the thresholds and
fastening of the seat belt.
The seat belts 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.
Seat belt fastened
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.
For seat belt and emergency tensioning
retractor safety guidelines, see Safety
Guidelines in Index.
•
•
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.
44
| Categories | Mercedes-Benz Manuals, Mercedes-Benz SL-Class Manuals |
|---|---|
| Document Type | Free Auto PDF Owners Manual Download. |
| Tags | Mercedes-Benz 300SL, Mercedes-Benz 500SL, Mercedes-Benz 600SL, Mercedes-Benz R129 |
| Download File |
|
| Document File Type | |
| Publisher | brianclifton.com |
| Wikipedia's Page | Mercedes-Benz R129 |
| Copyright | Attribution Non-commercial |
(5 votes, average: 4.8 out of 5)
Automotive readers have rated 1993 Mercedes-Benz 300SL 500SL 600SL R129 Owners Manual 4.8 out of 5.0 based on 5 product reviews. Awesome to have a free service to get a manual for a car that I brought second hand as it come with out instruction manual and I need it to fix an issue and I need the manual so thank you
Brilliant and absolutely free recommended
I need an instruction manual to see how to replace fuses.
I need a instruction manual to see how to work the CD player and radio
i liked it very much very happy john