TSB 01-005-21-3778 — Mazda Service bulletin

01-005-21-3778 is a service bulletin on file with NHTSA for 3 Mazda models, 2002–2013 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.

What the bulletin says. The Mazda DCA-8000PM is required for all warranty battery testing. If the Mazda DCA-8000PM 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…

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

1Document filed
3Vehicles named
3Model years

Vehicles and model years 01-005-21-3778 names

VehicleModel years
Mazda CX-5 2012
Mazda CX-7 2013
Mazda Mazda6 2002

Every document filed under 01-005-21-3778

Document IDFiledType
01-005-21-3778 February 8, 2021 Service bulletin

What 01-005-21-3778 covers

Electrical — the component vocabulary NHTSA files this communication under.

← All Mazda CX-5 TSB years TSB lookup by model

Questions buyers ask

What is TSB 01-005-21-3778?

01-005-21-3778 is a service bulletin filed with NHTSA by Mazda, covering 3 Mazda models across the 2002–2013 model years. NHTSA's summary reads: The Mazda DCA-8000PM is required for all warranty battery testing. If the Mazda DCA-8000PM 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…

Which vehicles does 01-005-21-3778 cover?

NHTSA's file names Mazda CX-5 (2012); Mazda CX-7 (2013); Mazda Mazda6 (2002). 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 01-005-21-3778 a recall, and is the repair free?

No. 01-005-21-3778 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 01-005-21-3778?

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 01-005-21-3778, 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 01-005-21-3778. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.