Mercedes-Benz C63 2010–2012 — technical service bulletin
Bulletin LI18-30P-054921 · NHTSA communication 10050900 · issued Oct 31, 2012
Technical service bulletin
communication type
Engine
component
2010–2012
model years
2
vehicle entries
Official summary
Mercedes (xentry): when engine switches to unit protection function (limp-home mode), set too conservatively, causes vehicle to have reduced or no power, intermittently, and software needs to be updated. Model 204. No model years listed. *pe
Vehicles covered
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.