Mercedes-Benz R320 2008–2009 — technical service bulletin
Bulletin SB-2008070004 · NHTSA communication 10028027 · issued Aug 1, 2008
Technical service bulletin
communication type
Engine and Engine Cooling
component
2008–2009
model years
8
vehicle entries
Official summary
Mercedes: check coolant line on diesel engine, replace, if necessary. The coolant hose in the area of the fan shroud may work loose when driving on rough roads due to insufficient retention of the bracket. *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.