TSB CSP11A — Mazda Warranty extension
CSP11A is a warranty extension on file with NHTSA for 3 Mazda models, 2016–2020 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Mazda Motor Corporation has decided to conduct a Customer Service Program (CSP11) to extend the limited powertrain warranty to 10 years or 120,000 miles, whichever occurs first, for necessary repairs if the covered vehicle has coolant leaks at the cylinder head, around the…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. CSP11A is filed as a warranty extension, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years CSP11A names
| Vehicle | Model years |
|---|---|
| Mazda CX-5 | 2019 |
| Mazda CX-9 | 2016, 2017, 2018, 2019, 2020 |
| Mazda Mazda6 | 2018, 2019, 2020 |
Every document filed under CSP11A
| Document ID | Filed | Type |
|---|---|---|
| CSP11a Warranty | June 21, 2025 | Warranty extension |
What CSP11A covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB CSP11A?
CSP11A is a warranty extension filed with NHTSA by Mazda, covering 3 Mazda models across the 2016–2020 model years. NHTSA's summary reads: Mazda Motor Corporation has decided to conduct a Customer Service Program (CSP11) to extend the limited powertrain warranty to 10 years or 120,000 miles, whichever occurs first, for necessary repairs if the covered vehicle has coolant leaks at the cylinder head, around the…
Which vehicles does CSP11A cover?
NHTSA's file names Mazda CX-5 (2019); Mazda CX-9 (2016–2020); Mazda Mazda6 (2018–2020). 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 CSP11A a recall, and is the repair free?
CSP11A is filed as a warranty extension, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of CSP11A?
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 CSP11A, its date, and NHTSA's own summary from the public file.
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 CSP11A. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.