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Thread: 2017 CX-9 Signature, Vibration on Highway when 65 mph+

  1. #1
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    2017 Mazda CX-9 Signature

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    2017 CX-9 Signature, Vibration on Highway when 65 mph+

    Greeting.

    We bought our 17 CX-9 Signature last Sat. Drove 4 times and found vibration everytime we drove on highway over 65 mph. We cross checked by using my 2013 CX-5 to drive the same route, smooth.

    I have contacted the dealer and will send the car back next Thursday to check, hopefully they can figure out the reason. Not very big vibration, but you can feel if the whole car keep vibrating, even feel more when I release the gas but not break yet.

    I have read some posts and comments, hopefully dealer can fix it. Kinda dissapointing since brand new, drove from dearler only 11 miles, no just reach 100 miles.

    Any suggestion will be helpful, thank you so much

    Joe

  2. #2
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    Mazda CX-9 Grand Touring 2016

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    There are several possibilities. Wheel balance. Tire eccentricity (they only look round). Tire road force variation (the tire is stiff in one area and not so stiff in another). Bent wheel. It should be easy for your dealership to find and fix the problem. Can you tell which corner of the car the vibration comes from? That'll help.

  3. #3
    Registered Member

    2017 Mazda CX-9 Signature

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    Hi PT,

    Thanks for replying, actually I cannot tell which corner, it feels like the whole thing does. I didn't test drive on high way, I guess that was because my CX-5 2013 is always good and I am too trust Mazda. When I drive on local, normally around 40 to 50 mph, it runs great.
    Oh, I found another issue that my parking sensor never beep, even I test it, hopefully they can check that out as well.

    Thanks again!

    Joey

  4. #4
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    CX-9

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    Feb 2017
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    South Florida
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    Wheel balance for sure. Seems this is magic MPH number where the issue shows itself.

    They have high speed wheel balance machines with load now.

    A mechanism comes down and puts pressure on the tires during high speed rotation (like a piece of road).

  5. #5
    Registered Member

    2017 Mazda CX-9 Signature

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    Thank you Jpjr50, I will send it back next Thursday, whenMazda field engineer will be there each week. Hopefully it can solve the problem.

    Thank you so much

  6. #6
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    2016 cx9

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    Feb 2017
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    NYC
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    Steering wheel adjustment

  7. #7
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    2017 Mazda CX-9 Signature

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    Update: Dealer's engineer tested my vehicle, but they said they wasn't able to identify the vibration. this happened last Saturday. I would drive more to feel it and update with you. Really hope the truth is as they said, but I will test for sure. Thank you!

    Joey

  8. #8
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    2016 CX9 GT AWD

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    I had the same issue, starting in the high 60's and most pronounced at 75, to the point the passenger side seat back when empty has a slight but visible and audible vibration.
    Dealer rotated and balanced tires, problem went away (or was less noticeable)...for about a week. It's back now and severity at it's peak is at different speeds than the previous vibration.
    That would seem to point to tire/wheel issue.

    I'm going to have dealer check it again this month when I take it for oil change.

  9. #9
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    Mazda CX-9 Grand Touring 2016

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    It could be anything that rotates, including the front axles with their CV joints.

    Dealers do not have engineers. They have salesmen called service writers, and they have mechanics, now called technicians, who have mixed levels of training and understanding. The service writers get paid by the services they sell, and the techs get paid by the services they perform. Some of these service writers are pretty good, and some don't know a lot. If you are unsatisfied with the response of either the service writer or the technician, ask to speak with the manager of the service department, the actual service manager. As always, demand the service you need in a business-courteous manner. Be firm and business-like.

    For something like this vibration, I'd make arrangements ahead of time to take a dealership service employee on a high speed drive so they get to feel the vibration. Please let us all know what they find when they fix it.

  10. #10
    Registered Member USCTrojan4JC's Avatar

    2014 MAZDA5 Grand Touring / 2004 Subaru Impreza WRX Sedan

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    Feb 2013
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    Monterey Park, CA, USA
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    Hi, Joey. If possible, may we please have an update on what happened? Thanks!

  11. #11
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    Mazda CX-9 Signature

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    OP - I would never drop off the car and let them "replicate" the issue. For all you know, they might have just drove the car around the block and close out the ticket. Always request to have a tech to ride along for such issue so that you can point it out to them.

  12. #12
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    Mazda CX 9

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    Hi everybody,

    I can see that some owners have the same vibration problems on their CX9. I bought my Signature July 5, 2017 and vibrations started at 6000 Km. My car is with dealer presently and they are looking to solve the issue. Because this seems to be a somewhat already known issue, what were the corrections done on your car? Dealer is sending technical questions to Mazda Canada and is waiting for solutions. Meanwhile, they removed the drive shaft, but there are still vibrations. Of course tires were checked and balanced.
    There were 20053 (2017 CX9) sold in USA and 3316 (2017 CX9) sold in Canada year to date according to Good Car Bad Car site. I wonder how many are experiencing the issue!
    I also suffered two times a black screen issue even though the firmware was updated last week. Dealer told me this was a known problem with Mazda and they are waiting on another update to correct the situation permanently.

    Can some of you reply or send me more info if your dealer solved these issues and how?

    Best regards

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