Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz S550 2004–2015technical service bulletin

Bulletin P-049241 · NHTSA communication 10034151 · issued Jun 7, 2010

Technical service bulletin
communication type
Electrical System
component
2004–2015
model years
23
vehicle entries

Official summary

Mercedes: engine start/stop, engine starts up at random or 12 v on board electrical system voltage too low. The resistance of the electrical line from dc/dc converter control unit n83/1 to ground point w3/9 is too high in the dc/dc converter control unit. *pe

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.