Cooling System

Faults and Technical chat for the Mazda CX-3
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Picklesdad
Posts: 3
Joined: Wed Jan 15, 2025 10:37 am

Post by Picklesdad »

Hi all, I’m new to Mazda.
CX-3, 2016, 1.5D, Sport Nav.
Taking 20+ mins to heat up, it will then blow hot for a while, then blows cool again.
Shows all the symptoms of a thermostat issue. Main dealers say there isn’t a thermostat listed.
Can anyone advise if there is a thermostat and if so, where it is.
According to my mechanic the coolant control valve is performing as he would expect.
Thanks in advance :-)

Percy247
Posts: 205
Joined: Sun Nov 10, 2019 4:08 pm

Post by Percy247 »

My thoughts would be a faulty coolant control valve.

https://static.nhtsa.gov/odi/tsbs/2021/ ... 6-0001.pdf

Do you have access to an OBD scan tool or did your local garage find any fault codes?
2016 Mazda 2 Sport Nav 1.5 Skyactiv Diesel.
Picklesdad
Posts: 3
Joined: Wed Jan 15, 2025 10:37 am

Post by Picklesdad »

Percy247 wrote: Wed Jan 15, 2025 5:16 pm My thoughts would be a faulty coolant control valve.

https://static.nhtsa.gov/odi/tsbs/2021/ ... 6-0001.pdf

Do you have access to an OBD scan tool or did your local garage find any fault codes?
Thank you, but I have a 1.5D, the link you posted was for a 2.0 petrol.
Thanks anyway ☺️
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