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Thread: HID headlight

  1. #1
    Registered Member

    2010 Mazda CX-9 Grand Touring

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    HID headlight

    Hi, about a month now the passenger side HID headlight on my 2010 CX-9 GT would flicker on start up. Today it's not lighting at all. Any suggestions? I'm thinking of getting the oem ballast replaced.

  2. #2
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    2016 CX-5

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    Quote Originally Posted by dondagun View Post
    Hi, about a month now the passenger side HID headlight on my 2010 CX-9 GT would flicker on start up. Today it's not lighting at all. Any suggestions? I'm thinking of getting the oem ballast replaced.
    it might be a bad bulb, try swapping the bulbs first and see if passenger side light up, if it does than it's easier and cheaper to get a replacement bulb than replacing the ballast, I believe to get to the ballast, the front bumper needs to come out then the whole housing has to come out to get to the ballast.

  3. #3
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    Quote Originally Posted by tomcat1446 View Post
    it might be a bad bulb, try swapping the bulbs first and see if passenger side light up, if it does than it's easier and cheaper to get a replacement bulb than replacing the ballast, I believe to get to the ballast, the front bumper needs to come out then the whole housing has to come out to get to the ballast.
    Is replacing the HID bulb as easy as replacing a standard bulb? I haven't looked at it as yet.

    Sent from my SM-G935F using Tapatalk

  4. #4
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    2016 CX-5

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    Quote Originally Posted by dondagun View Post
    Is replacing the HID bulb as easy as replacing a standard bulb? I haven't looked at it as yet.

    Sent from my SM-G935F using Tapatalk
    pretty much, if I'm not mistaken the CX-9 OEM HID is a D2S type, see video,

    it's for an Infiniti, but the process is similar...... they show the housing removed from the car to take the video easier,

    you do not need to remove the housing from your CX-9

    hopes this helps....

    replacing a bulb is lot easier and cheaper than replacing the OEM ballast.... however, DO NOT BUY cheap ebay D2S bulbs,

    they will damage your OEM ballast.



  5. #5
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    2010 Mazda CX-9 Grand Touring

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    Hi sorry for the late reply was away, now tackling this. It's not the D2S bulb so I'm going to have the ballast replaced.

    I have another question I noticed my park lights were blown so I am also changing those, when I inspected I noticed there are side marker bulbs but I have never seen them on before. When do they light? Is it together with the park lights?

    Sent from my SM-G935F using Tapatalk

  6. #6
    Biggie T Skinny helbigtw's Avatar
    CX Moderator

    08 CX-9 GT Fwd, Bose/Nav, BSM,Compass/Homelink, Pwr Lift,Tow

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    You might want to try the igniter & cable before you buy a ballast. Strangely, I can't find where Mazda sells the igniter. Doesn't show to come with the bulb or the ballast. They are on ebay though. You could also get a ballast and an igniter on ebay together for cheap. Thankfully mine are still working 100% on my 2008.


    08' CX-9 GT FWD
    Gray Mica with Black Interior
    Nav/Bose/Sunroof/Bluetooth Phone/Rack&Crossbars/BSM/Pwr Lift/Homelink Mirror/Tow Pkg/All Weather Rear Mats
    K&N drop-in filter/Centric E-Coated rotors & Centric Posi-Quiet Ceramics /Yakima ForkLift Bike Tray / Weathertech front mats
    Tires: Nitto NT850+ CUV
    Oil: Mobile One Full Synth & Mobile One Extended Performance filter
    Problems to date: Blower motor relays replaced once, intake manifold rear brace was missing from factory build, headlamp motors are dying,
    windshield wiper plastic cap broken.
    Mileage: 94k Jan/2017
    Location: Lexington, KY
    Job: Auto Physical Damage Adjuster

    ...

    ... ...

  7. #7
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    Quote Originally Posted by helbigtw View Post
    You might want to try the igniter & cable before you buy a ballast. Strangely, I can't find where Mazda sells the igniter. Doesn't show to come with the bulb or the ballast. They are on ebay though. You could also get a ballast and an igniter on ebay together for cheap. Thankfully mine are still working 100% on my 2008.
    Well... I just dropped it off to have the ballast changed. They have to take off the front bumper so fingers crossed.

    Update just got a call it's ready so it was just the ballast

    Sent from my SM-G935F using Tapatalk
    Last edited by dondagun; 01-13-2017 at 09:02 AM.

  8. #8
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    2008 Mazda CX-9 GT

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    How much mileage do you have on you vehicle? Have you noticed a brightness drop in your lights?

  9. #9
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    2010 Mazda CX-9 Grand Touring

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    I have about 77k miles on my CX-9 I've owned it about 3yrs now. My HID lights seems fine, I did buy new osram D2S bulbs but I never used them seeing that the ballast is what was bad.

    Sent from my SM-G935F using Tapatalk

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