TSB SIS-21841 — Ford Service bulletin

SIS-21841 is a service bulletin on file with NHTSA for 6 Ford models, 2009–2011 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. COMM-TRANS LUND: SOME 2009-2011 MODELS MAY HAVE THE AIR BAG INICATOR FLASHING WITH A STORED TROUBLE CODE. THIS IS A SOFTWARE PROBLEM.

NHTSA's own summary of the document, quoted from the public manufacturer-communications file.

1Document filed
6Vehicles named
3Model years

Vehicles and model years SIS-21841 names

VehicleModel years
Ford Crown Victoria 2009, 2010, 2011
Ford Explorer 2009
Ford Focus 2009, 2010
Ford Fusion 2009
Ford Ranger 2009, 2010
Ford Taurus 2009

Every document filed under SIS-21841

Document IDFiledType
SIS-21841 April 1, 2011 Service bulletin

What SIS-21841 covers

Airbags, Electrical — the component vocabulary NHTSA files this communication under.

← All Ford Crown Victoria TSB years TSB lookup by model

Questions buyers ask

What is TSB SIS-21841?

SIS-21841 is a service bulletin filed with NHTSA by Ford, covering 6 Ford models across the 2009–2011 model years. NHTSA's summary reads: COMM-TRANS LUND: SOME 2009-2011 MODELS MAY HAVE THE AIR BAG INICATOR FLASHING WITH A STORED TROUBLE CODE. THIS IS A SOFTWARE PROBLEM.

Which vehicles does SIS-21841 cover?

NHTSA's file names Ford Crown Victoria (2009–2011); Ford Explorer (2009); Ford Focus (2009–2010); Ford Fusion (2009); Ford Ranger (2009–2010); Ford Taurus (2009). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

Is TSB SIS-21841 a recall, and is the repair free?

No. SIS-21841 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

How do I get the full text of SIS-21841?

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under SIS-21841, its date, and NHTSA's own summary from the public file.

Data updated 2026-08-20 from NHTSA's public records

Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under SIS-21841. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.