2017 Mercedes Benz S 63 AMG Technical Service Bulletin # S-91_40-192 Date: 100316

Restraints - Emergency Tensioning Retractor Replacement
Date: March 16, 2010
Order No: S-B-91.40/192
Group: 91
Subject:
MY-All, Models 164, 204, 207, 211, 212, and 221
Replacing the Emergency Tensioning Retractor
When replacing the left front reversible emergency tensioning retractor (A76) or the right front reversible emergency tensioning retractor (A76/1),
return the damaged part to the QEC with the warranty-parts return slip (ARS) and with the quick test report.
Only replace the control unit if one of the following fault codes exists:
^ "Control unit of left front reversible emergency tensioning retractor (A76)"
^ "Control unit of right front reversible emergency tensioning retractor (A76/1) is defective"
^ "Internal fault"