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Service bulletin 01-006-21-3779a

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10200933
Published by NHTSA2021-09-03
Manufacturer's number01-006-21-3779a
Manufacturer's date2021-08-24
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING

NHTSA's summary

This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the battery periodically according to the repair procedure.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, 12-volt battery

Vehicles listed
MAZDA 6261997, 1998, 1999, 2000, 2001, 2002
MAZDA B-SERIES2010
MAZDA B-SERIES TRUCK1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 (the catalog's model; the bulletin names a series or trim of it)
MAZDA CX-32016, 2017, 2018, 2019, 2020, 2021
MAZDA CX-302020, 2021
MAZDA CX-52013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
MAZDA CX-72007, 2008, 2009, 2010, 2011, 2012
MAZDA CX-92007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
MAZDA CX92007
MAZDA MAZDA22011, 2012, 2013, 2014
MAZDA MAZDA32004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
MAZDA MAZDA52006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
MAZDA MAZDA62003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
MAZDA MIATA1997 to 2005
MAZDA MILLENIA1997, 1998, 1999, 2000, 2001, 2002
MAZDA MPV1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
MAZDA MX-52006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
MAZDA PROTEGE1997, 1998, 1999, 2000, 2001, 2002, 2003
MAZDA RX-82004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
MAZDA TRIBUTE2000
MAZDA TRIBUTE2001, 2002, 2003, 2004, 2005, 2006
MAZDA TRIBUTE2007
MAZDA TRIBUTE2008, 2009, 2010, 2011

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
01-007-232023-06-04. Service bulletin. The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code.
08-002-232023-03-03. Service bulletin. Some customers may experience the airbag warning light ON with DTC B00A0:09 stored in the SAS control module memory when the battery voltage is low. DTC B00A0:09 (Occupant classification sensor internal signal output unstable). This concern is caused by the low voltage detection time of the occupant classification sensor (OCS) being too short during cranking, which causes detection of the DTC unnecessarily. The concern occurs more often in colder weather when greater electric current is consumed to start the vehicle. To eliminate this concern, the OCS has been modified to avoid unnecessary DTC detection. NOTE: Even if the voltage is recovered after the engine is started, the airbag warning light stays ON during the drive cycle. When the battery voltage becomes stable after the engine is started, the airbag system will operate normally.
01007162022-06-06. Service bulletin. iElkoop battery service information This service information provides basic Q85/T110 battery handling procedures. Complete service information can be found in MS3 online or workshop Manual (section 1317)
01005162022-06-06. Service bulletin. Battery test procedure requirements using the GR81291
01004162022-06-06. Service bulletin. Battery Maintenance
DRW41a2021-09-03. Service bulletin. DRW41 - TELEMATICS COMMUNICATION UNIT (TCU) CONCERN - BATTERY DRAIN AND CONNECTED SERVICES. On certain subject 2021 MY CX-5 & CX-9 vehicles, a battery drain concern could occur due to the Telematics Communication Unit (TCU) not going to sleep. In addition, some vehicles were repaired under the cancelled campaign SSPC6, which caused Connected Services to no longer work. This Dealer Rework will repair all concerns to ensure the battery drain concern does not occur and restores Connected Services, if disabled from a prior software update. All Mazda dealers will update the subject vehicles with improved TCU software. This campaign will be expanded to include additional Mazda3 and CX-30 vehicles at a later date, please watch for additional announcements.
SSPC72021-09-03. Service bulletin. SSPC7 - SPECIAL SERVICE PROGRAM -TELEMATICS COMMUNICATION UNIT BATTERY DRAIN CONCERN AND CONNECTED SERVICES NOT AVAILABLE
SA-045-21d2021-09-03. Service bulletin. Connected vehicle remote functions inoperative and/or engine no start due to low battery voltage. NOTE: SA-045/21 HAS BEEN SUPERCEDED TO SSPC7.
SA-045-21c2021-09-03. Service bulletin. Connected vehicle remote functions inoperative and/or engine no start due to low battery voltage. Some customers may experience the following symptoms: Connected Vehicle Remote Functions inoperative after SSPC6 repair. Connected Vehicle Remote Functions inoperative on vehicles built March 20, 2021 and later.
SA-045-21b2021-09-03. Service bulletin. Connected vehicle remote functions inoperative and/or engine no start due to low battery voltage. Some customers may experience the following symptoms: Connected Vehicle Remote Functions inoperative after SSPC6 repair. Connected Vehicle Remote Functions inoperative on vehicles built July 1, 2021 and later.