CarComplaints.com Notes: The only area of real concern for 2010 Mazda CX-9 owners is the brake booster.
In 2014, Mazda extended the warranty on the 2007-2013 CX-9 brake booster to 7 years / 90,000 miles. However this extended warranty has expired, so buyer beware.
This Mazda CX-9 brake booster failure isn't terrible in terms of repair cost — it "only" costs $550 average to fix. However it is a safety issue when the brake booster fails as it increases stopping distance. Owners have reported having to stomp on the brake pedal, & crashes/injuries have been reported due to this CX-9 brake booster defect.
Driving on I-5, near Gold Hill, Oregon, when the traction control system light came on and the Vehicle slowed down. I had to push the gas pedal to the floor to get the car to move and I could not shift gears! It shuddered and the wheels seemed to lock up. I could smell burning rubber. I forced the car to the next exit, pulled off and shut it down. I sat there waiting for it to cool off. When I started it again it was a little rough at first but then seemed to get better and I was able to get home.
I bought the car in June of 2020 from Lithia Motors in Medford, Oregon. I also bought a Power Train Warranty For $2,500 which was set to expire on 6/10/2021. I called Lithia and made an appointment to take it to them for repairs on June 1, 2021. I got as far as Grants Pass, OR, and it did the same thing I described above. I called a tow truck and had it towed to Lithia in Medford. When I got to Medford, the Service Manager told me I would have to take it to Crater Lake Ford.
When I got to Crater Lake Ford, I was told to take it to Crater Lake Mazda which I did. I described in detail what the car was doing to.the Service Manager and told him I feared it was some kind of transmission problem. I also told him I had a power train warranty that would expire on June 10th, so time was of the essence!
I never suspected the brakes because we had the bakes repaired in November of 2020 at Lithia Motors. They were making a hissing sound. They replaced the brake booster among other brake parts for $1,300 plus. That job was still under warranty.
I got a call on June 15th telling me the problem was in the gear shift. He said it was now repaired and I could come and pick it up. I paid $674 for that repair. I got three miles from the dealership and the original problem occurred. I had it towed back to Mazda and it has been there ever since!!
They replaced their traction control module, but that didn't fix it. After test driving it or even letting it idle to 45 minutes, the original problem was still there.
Then they decided the problem was with the brakes and they replaced the brake booster and the switch, which were after-market parts that were used in the November 2020 repair, with Mazda parts. They did not replace the master cylinder with a Mazda part. That did not fix the problem. The mechanic, Lena, said it's a manual problem in the brakes and not a sensor problem. She also said she would not be working on it until we came in and paid for the work that has been done. Countless calls, texts and voice messages and we still have no idea what we owe!! Talk about a clusterf***!!!
Update from Nov 24, 2021: We took the car to the Mazda Dealership on June 1, 2021 and they still have not found the problem! That's six months without the car and several thousand dollars more in repairs that have not worked. I simply.don't know what to do!! Any suggestions?
A D V E R T I S E M E N T S
Driving on I-5, near Gold Hill, Oregon, when the traction control system light came on and the Vehicle slowed down. I had to push the gas pedal to the floor to get the car to move and I could not shift gears! It shuddered and the wheels seemed to lock up. I could smell burning rubber. I forced the car to the next exit, pulled off and shut it down. I sat there waiting for it to cool off. When I started it again it was a little rough at first but then seemed to get better and I was able to get home.
I bought the car in June of 2020 from Lithia Motors in Medford, Oregon. I also bought a Power Train Warranty For $2,500 which was set to expire on 6/10/2021. I called Lithia and made an appointment to take it to them for repairs on June 1, 2021. I got as far as Grants Pass, OR, and it did the same thing I described above. I called a tow truck and had it towed to Lithia in Medford. When I got to Medford, the Service Manager told me I would have to take it to Crater Lake Ford.
When I got to Crater Lake Ford, I was told to take it to Crater Lake Mazda which I did. I described in detail what the car was doing to.the Service Manager and told him I feared it was some kind of transmission problem. I also told him I had a power train warranty that would expire on June 10th, so time was of the essence!
I never suspected the brakes because we had the bakes repaired in November of 2020 at Lithia Motors. They were making a hissing sound. They replaced the brake booster among other brake parts for $1,300 plus. That job was still under warranty.
I got a call on June 15th telling me the problem was in the gear shift. He said it was now repaired and I could come and pick it up. I paid $674 for that repair. I got three miles from the dealership and the original problem occurred. I had it towed back to Mazda and it has been there ever since!!
They replaced their traction control module, but that didn't fix it. After test driving it or even letting it idle to 45 minutes, the original problem was still there.
Then they decided the problem was with the brakes and they replaced the brake booster and the switch, which were after-market parts that were used in the November 2020 repair, with Mazda parts. They did not replace the master cylinder with a Mazda part. That did not fix the problem. The mechanic, Lena, said it's a manual problem in the brakes and not a sensor problem. She also said she would not be working on it until we came in and paid for the work that has been done. Countless calls, texts and voice messages and we still have no idea what we owe!! Talk about a clusterf***!!!
Update from Nov 24, 2021: We took the car to the Mazda Dealership on June 1, 2021 and they still have not found the problem! That's six months without the car and several thousand dollars more in repairs that have not worked. I simply.don't know what to do!! Any suggestions?
- Beverley G., Selma, US