Mercedes-Benz S550 2004–2007 — technical service bulletin
Bulletin PB-54-65-194 · NHTSA communication 10025664 · issued Mar 26, 2008
Technical service bulletin
communication type
Parking Brake
component
2004–2007
model years
10
vehicle entries
Official summary
Park assist does not function. All model 221 (221.171, 176, 179, 186, 177) vehicles, equipped with sa code 233 (distronic plus) and 806 (modification year 2006). Model years unknown. *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.