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I drove my 2016 CX-9 off the highway and it idled at front of a restaurant for about 5 minutes, when suddenly the engine coolant overheat light came on. I shut the engine off and found leaking coolant on the ground near the rear of engine bay. Brought the car to Corpus Christi Mazda, where I found out leaks come from cylinder head crack. This happens to CX-9s manufactured before June 20, 2020 according to Mazda TSB 01-013/21. I was quoted $3380 to replace the cylinder head out of pocket because the car is just out of powertrain warranty. I contacted Mazda headquarter for covering the cost out of goodwill through AWA (after warranty assistance) program since this is due to manufacture defects of cylinder head. Mazda refused to pay.
- Haibin S.,
Corpus Christi, TX, US