Mercedes-Benz GL320 2009 — technical service bulletin
Bulletin SB-2009090002 · NHTSA communication 10032587 · issued Sep 1, 2009
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009
model years
3
vehicle entries
Official summary
Mercedes: update engine control module and selective catalytic reduction software. The software for the engine control module and selective catalytic reduction may not meet current production specifications. As a result the obd system may not function correctly. *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.