Hi everyone,
just found this TSB not too long ago and thought it was interesting.
Long story short, there seems to be a risk that the heater core gets plugged by debris which would result in poor cabin heater performance. The interesting bits are:
- 2 x production changes where made by Mazda to the Cx-9 try to prevent the problem. (1)They increased the concentration of the coolant to so that the amount of anti-rust additive is higher and (2) then later the composition of the coolant has been changed (the ration of anti-rust additive has been increased). The way I interpret the TSB is that CX-9 built after Sep 1, 2017 have change (1) implemented, CX-9 built after 1 April 2019 have change (1) and (2) implemented.
- the task of replacing the heater core in a CX-9 is a whopping 7.4 hrs of labor!
- If they have a TSB out on this, this means that consumer have already experienced heater core issues. It seems like the TSB initially started with the 2014 mazda 3 and mazda 6 and the previous TSB was issued in 2017. So my rough estimate is that it looks like the issue could present itself in as early as 3-4 years (2014 mazda 3 bought late 2013 to a TSB repair in 2017).
- These repairs are eligible under warranty type A. I have not figured out if this was the 3 years warranty or the 5 year powertrain warranty.
I have a 2018 CX-9 built after 1 Sept 2017, I want to keep it for close to 10 years, I need a good heater core because I live in Canada and I fully believe in preventive maintenance whenever possible. So I figured I might ask my dealer or pay him to change the coolant to the new coolant with higher anti-rust additive concentration, but the thing is I can't find the new specification of the coolant, other than it is FL-22. Which is the same specification than before the additive addition. So I don't really have any way of knowing if the dealer even have the new coolant that was introduced as a change after 1 April 2019, and COVID-19 doesn't make it easy to chat with them about this at the moment. I certainly don't want to change the coolant for nothing.
Not really a question, but wanted to inform members of the forum and will welcome any comments or ideas on the subject.
just found this TSB not too long ago and thought it was interesting.
Long story short, there seems to be a risk that the heater core gets plugged by debris which would result in poor cabin heater performance. The interesting bits are:
- 2 x production changes where made by Mazda to the Cx-9 try to prevent the problem. (1)They increased the concentration of the coolant to so that the amount of anti-rust additive is higher and (2) then later the composition of the coolant has been changed (the ration of anti-rust additive has been increased). The way I interpret the TSB is that CX-9 built after Sep 1, 2017 have change (1) implemented, CX-9 built after 1 April 2019 have change (1) and (2) implemented.
- the task of replacing the heater core in a CX-9 is a whopping 7.4 hrs of labor!
- If they have a TSB out on this, this means that consumer have already experienced heater core issues. It seems like the TSB initially started with the 2014 mazda 3 and mazda 6 and the previous TSB was issued in 2017. So my rough estimate is that it looks like the issue could present itself in as early as 3-4 years (2014 mazda 3 bought late 2013 to a TSB repair in 2017).
- These repairs are eligible under warranty type A. I have not figured out if this was the 3 years warranty or the 5 year powertrain warranty.
I have a 2018 CX-9 built after 1 Sept 2017, I want to keep it for close to 10 years, I need a good heater core because I live in Canada and I fully believe in preventive maintenance whenever possible. So I figured I might ask my dealer or pay him to change the coolant to the new coolant with higher anti-rust additive concentration, but the thing is I can't find the new specification of the coolant, other than it is FL-22. Which is the same specification than before the additive addition. So I don't really have any way of knowing if the dealer even have the new coolant that was introduced as a change after 1 April 2019, and COVID-19 doesn't make it easy to chat with them about this at the moment. I certainly don't want to change the coolant for nothing.
Not really a question, but wanted to inform members of the forum and will welcome any comments or ideas on the subject.