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Thread: 2nd Generation CX-9: Sequential LED turn signal installation (side mirrors)

  1. #1
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    2nd Generation CX-9: Sequential LED turn signal installation (side mirrors)

    This is a DIY How-To for an aftermarket sequential LED turn signal installation on the side mirrors of a 2nd Generation Mazda CX-9. I decided to document this process because I haven't seen anyone else document the process, and the parts didn't come with any instructions. Note that these instructions should be very similar (if not the exact same) for the 2017+ CX-5 and the CX-8.

    This process was documented/photographed by myself, using my crappy cellphone camera and my 2018 Mazda CX-9 Signature as the "demo" vehicle. This DIY is provided as a learning aid and reference guide. I assume no responsibility for any warranties this process may void, or damages you may inflict on yourself or your vehicle.

    The CX-9 comes factory equipped with LED turn signals on the side mirrors. I came across these sequential LEDs on AliExpress and decided to give them a shot. I'm very happy with them! The sequential LEDs look great. The only downside is that I can no longer see the turn signal blinking on the side mirror from inside the car in the daytime (this may be a pro for you if you're easily distracted by that light at the edge).


    What you'll need:

    - Aftermarket sequential LED turn signal housings (I bought these ones)
    - A flat head screwdriver (preferably longer)
    - Phillips head screwdriver
    - Plastic pry tool
    - Towel to catch the side mirror caps in case they fall

    The LED turn signals I bought came with a flat head screwdriver and a pry tool in the package.




    There are also two color options, clear and smoked. I got the smoked version, and it looks very close to the OEM in appearance:




    Finally, it seems the the OEM turn signal doesn't illuminate the entire length of the strip. There's a small portion that stays dark, while the entire strip is illuminated on the aftermarket turn signal. OEM signal shown here.





    On to the install!
    Attached Images Attached Images

  2. #2
    Work in Progress sm1ke's Avatar
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    Side mirror glass removal

    First, turn the car on to the ACC position (or start it). Using the mirror adjustment control, turn the mirror "in" so that you can reach in behind it with your fingers.



    EDIT: For vehicles with the 360 Camera feature, take extra care during these next few steps to ensure you don't damage the camera wiring in the mirror housing. Unfortunately, my 2018 does not have the 360 Camera, so I'm unable to show you what to be mindful of, but it should be fairly obvious. Thanks Turborascal for the heads up!

    Here's a photo of the mirror detached. The back of the mirror is held in at 3 points, one right at the center, one just below the center and one off to the side (1). You'll want to pull from the back, not from the edge. I found that it does take a bit of force to get it to come loose, but this can vary depending on how much grease you have at those points. Hopefully this photo helps you figure out how to pull it out, and reassures you that the glass will come out with enough force. Again, do not pull from the edges, pull from the back.



    EDIT: Here's a video that shows you how to "pull from the back" (skip to 0:45).

    Attached Images Attached Images
    Last edited by sm1ke; 07-06-2019 at 11:24 AM. Reason: Added caution regarding 360 Camera wiring
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    Side mirror cap removal

    Remove the adhesive tape (2) and set it aside for reinstallation. Lay a towel down on the ground in case the mirror cap falls.




    With the glass out of the way, you can now see how the mirror cap attaches to the housing at points A-E.




    EDIT: Two other users have reported that it was easier for them to start releasing clips from the outside in (starting at "E"). Truth be told, I hadn't even tried starting at E, and given that clip E is much more accessible than clip A, it probably is much easier. Thanks for the tips Cx-9 Guy and Turborascal!

    Insert a flat head screwdriver and push on the clip shown (A). Apologies for the shit photo. This should be enough to wedge a pry tool in from the other side (3).






    Work the pry tool up and down to loosen the other 2 clips in that area, then work your way along the top of the mirror cap, using the flat head screwdriver to release clips B-E as you go.

    Attached Images Attached Images
    Last edited by sm1ke; 07-06-2019 at 11:28 AM. Reason: Added tip regarding mirror cover removal
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    Work in Progress sm1ke's Avatar
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    LED turn signal removal

    With the mirror cap set aside, the turn signal housing (4) will be exposed. Use a flat head screwdriver to lift the tab on the harness connector (5), then pull the connector off of the turn signal housing. Using a Philips screwdriver, remove the screw shown (6).




    Grab the housing where the connector was installed (7) and work it back and forth a little bit to loosen the clips along the bottom of the mirror. Use a flat head screwdriver to release the last clip (8) from the housing.




    With the turn signal off of the car, remove the two screws shown (9) using a Philips screwdriver.

    Note 1: On the OEM turn signal, you'll see a small white spacer (1O) near the end of the housing. Remove this spacer and reinstall it in the same spot on the new turn signals. This will prevent a gap from developing during reinstallation.




    Note 2: When screwing the two screws back in, ensure that the housings "seat over" the screw pegs before tightening the screws.


    Installation is the reverse of removal, just replace the OEM turn signal housing with the new one. Ensure that you test each signal once the harness is plugged back in, just in case. Also be sure to replace the adhesive tape that was removed in the previous post. Repeat for the other side, and that's it!

    EDIT: One thing I forgot to mention. When pressing the mirror glass back into place, if you're able to tilt the glass to the left/right or up/down easily, one of the attachment points is still loose. This is usually one of the white pegs shown in the second picture of post #2. If it tilts up/down, line the mirror up with the lower white peg and press it in until it clicks. If it tilts left/right, line the mirror up with the outer white peg and press it in until it clicks. You'll know its attached correctly if there's resistance when you try to tilt the mirror with your fingers.
    Attached Images Attached Images
    Last edited by sm1ke; 06-20-2019 at 01:51 PM.
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    Quick video of the sequential turn signals in action:

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    Great write up. but the video is not showing up. The only advice I would add cost me $10 on Amazon. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 When I was removing this mirror glass to replace the back cover I bought these suction cups, attached to the center of the mirror, so you could have an evenly distributed pull on the outside of the mirror while your pried from underneath, they were on there tight. These suction cups had a very thick rubber pad and did not slip a bit, really helped remove the glass. I didn't want to break it because it wasn't cheap.

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    Quote Originally Posted by CharlestonMX5 View Post
    Great write up. but the video is not showing up. The only advice I would add cost me $10 on Amazon. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 When I was removing this mirror glass to replace the back cover I bought these suction cups, attached to the center of the mirror, so you could have an evenly distributed pull on the outside of the mirror while your pried from underneath, they were on there tight. These suction cups had a very thick rubber pad and did not slip a bit, really helped remove the glass. I didn't want to break it because it wasn't cheap.
    Great suggestion. The only reason I didn't use these was because I've removed mirror glass on other cars before, so I'm a little more familiar with the process. They certainly would have been nice to have though!

    One thing I will suggest though. When pulling the mirror glass off (using the suction cups or not), apply constant, building pressure until the glass comes out. You don't want to yank it loose because the wires that connect to the BSM indicators aren't that long, and you may accidentally pull them out.
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    Work in Progress sm1ke's Avatar
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    Is anyone else having issues with the link to the product or viewing the video? I've tested both the link and the video on my work computer and my phone, and both seem to be working fine.

    If the product link isn't working, search "mazda cx-9 sequential" on AliExpress.com.
    If the video link isn't working, the video is titled "2018 Mazda CX-9 Sequential LED Turn Signals" on YouTube.
    Last edited by sm1ke; 06-19-2019 at 10:44 AM.
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    That's looks really nice Sm1ke, great job...

    Peace and blessings,

    Azeke

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    Looks great, I looked up the video with your title.
    https://www.youtube.com/watch?v=tmrZRfYsfNk
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    Quote Originally Posted by sm1ke View Post
    Is anyone else having issues with the link to the product or viewing the video? I've tested both the link and the video on my work computer and my phone, and both seem to be working fine.

    If the product link isn't working, search "mazda cx-9 sequential" on AliExpress.com.
    If the video link isn't working, the video is titled "2018 Mazda CX-9 Sequential LED Turn Signals" on YouTube.
    Apparently the login page popped up only when using my iPad.
    I just tried on my Mac and the product page appeared!
    Thank you once again ... the price is surprisingly affordable and I ordered a set for my Signature CX-5.
    Your comprehensive installation instructions will make the job relatively painless.
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    Awesome looking mod! I'm planning on doing the same. Any chance you can do a quick vid on just removing the mirror part? No biggie if you can't, I think I can manage it. Just a quick question, when you mentioned pull from the back and not from the side, are you saying once the mirror is turned to stick your hand inside the mirror enclosure and pull toward you with even force? I'm confused on which "back" part. Thanks

    Update: I should have a done a YouTube search earlier. I think this video demonstrates what you're saying : https://www.youtube.com/watch?v=ixz8l2Eyo84
    Last edited by Cx-9 Guy; 06-20-2019 at 12:42 PM.

  13. #13
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    In the second picture of post #2, you can see the 3 attachment points. The two white posts will usually come undone first, then the middle one is a little harder. There is a plastic plate on the back of the mirror, you will feel it when you put your hand in there. Try to keep your hands or pry tool on that plastic connector piece.
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    Quote Originally Posted by Cx-9 Guy View Post
    Awesome looking mod! I'm planning on doing the same. Any chance you can do a quick vid on just removing the mirror part? No biggie if you can't, I think I can manage it. Just a quick question, when you mentioned pull from the back and not from the side, are you saying once the mirror is turned to stick your hand inside the mirror enclosure and pull toward you with even force? I'm confused on which "back" part. Thanks

    Update: I should have a done a YouTube search earlier. I think this video demonstrates what you're saying : https://www.youtube.com/watch?v=ixz8l2Eyo84
    Yep that's exactly what I meant, sorry if it wasn't clear. I actually saw that exact video when I was trying to see if anyone else had done it for the CX-5 or CX-9. In that video, you can see that the back of the mirror glass is reinforced with some black plastic. It's the same with the CX-5 and CX-9. I'll link the video in the OP, thanks.
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    I added an edit to the end of post #4 for pressing the mirror glass back into place.
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