SL 550 (230.471) V8-5.5L (273.965) (2008)
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Seat Belt Retractor: All Technical Service Bulletins
Restraints - Operational Characteristics
Date: May 4, 2009
Order No.: P-B-91.40/191
Group: 91
SUBJECT:
Model 230 up to MY2008 (code 808) and as of MY2009 (code 809); (Except Code P99 "AMG Black Series" Special Model)
Belt Lock on Seat Belt
Seat belts with a "belt catches or locks while traveling" complaint have often been unnecessarily replaced when nothing was found upon inspection.
The emergency tensioning retractor units on the front seats are equipped with a solenoid-controlled seat belt lock system in which the belt extension can
be blocked during vehicle deceleration and inclination.
