Mercedes Benz 2002 ml 320 사용자 설명서

The seat belts for the outboard passenger seats (except 
in the optional 3rd row 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 impacts exceeding the first threshold of the SRS 
and in rear impacts exceeding a preset severity level. 
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, angled impacts, roll-
overs, certain side impacts, or other accidents without 
sufficient frontal or rear impact forces, the emergency 
tensioning 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 tensioning retractor see 
page 66.

Note:

The front passenger ETR activates only if the front 
passenger seat is occupied.

Heavy objects on the front passenger seat can appear to 
the “SRS” to indicate the presence of an occupant in 
that seat which causes the passenger front airbag to 
deploy and the ETR to activate in a crash exceeding the 
appropriate threshold.