Restraints - Difficult To Pull Seat Belt Out

Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Technical Service Bulletin # LI91-40_P-0471834 Date: 120405

Restraints - Difficult To Pull Seat Belt Out

Driver or front passenger seat belt can only be pulled out with great effort.

Topic number LI91.40-P-047183

Version 4

Design group 91.40 Seat belts, emergency tensioning retractors

Date 04-05-2012

Validity Model series 204, 207, 212, 218

Reason for change Damage code updated

Complaint:

Seat belt can only be pulled out with great effort. At the same time a noise can be heard from the reversible reel tensioner gearing.

Cause:

The customer continuously pulled on the seat belt strap while adjusting the fit of the belt after buckling up (to reduce the slack). This caused the

drive of the reversible reel tensioner to remain engaged.

Remedy:

Insert the seat belt into the belt buckle with increased effort and switch on the ignition "circuit 15 ON". This causes the belt adjustment sequence to

be repeated and the drive of the reversible reel tensioner disengages properly. On customer request the "belt adjustment" function can be deactivated

using the multifunction buttons on the steering wheel. See operator's manual "Switching seat belt adjustment on and off".

Do not replace the seat belt!

Update the software version of the left and right reversible emergency tensioning retractor control units using XENTRY (Star Diagnosis).

Symptoms

2010 Mercedes Benz C 250 4MATIC (204.085) (CAN) V6-2.5L (272.911) Page 18