GL 450 (164.871) V8-4.6L (273.923) (2007)
Seat Belt Tensioner: All Technical Service Bulletins
Restraints - 'PRE-SAFE Not Available' Message Displayed
Date: October 12, 2006
Order No.: T-B-91.40/129
Supersedes:
Group: 91
SUBJECT:
Model 164.175/177/186/871
"PRE-SAFE Not Available" Displayed in Instrument Cluster / No Fault Code Stored
If you receive customer reports in the above model vehicles of the message "PRE-SAFE Not Available" displayed in the instrument cluster and no fault
code stored, the system's left and right front electric seat belt tensioning retractors (RevETR-LF, RevETR-RF) may need to be re-initialized. To resolve,
perform the following.
1.
Using SDS follow menu path: Control Units -> Body -> RevETR-LF -> Initial Startup -> Vehicle equipment -> Transfer coding -> Test of
emergency tensioning retractor function -> Start test -> Active -> F2
2.
Repeat procedure for RevETR-RF.