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Thread: Daytime running lights dim/flickering

  1. #46
    Registered Member CX-5um's Avatar

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    Quote Originally Posted by arunka007 View Post
    Stealer replaced my entire headlight module last week. Problem resolved. Hope this doesn't happen again after warranty expires
    I'd keep an eye out every couple months just in case. So I take it there's 2 potential problems focused primarily on CX5 models with LEDs leading to replacement.

    1. There's the cloudy lens issue.
    2. LED DRL flickering issue.

    Again I could not find LED issues for other Mazdas. Seems to be the CX-5. FYI, read this: https://www.cars.com/articles/2013-2...1420684551601/

    ^^
    The problem: Affected vehicles with LED or high-intensity discharge headlights have lenses that may appear to be stained a milky white and may have reduced lighting ability. This is due to gas that emits from a leaky gasket in the lamp unit and that adheres to the lens. The gas reacts with the anti-clouding coating on the lens, creating the milky appearance.
    Vehicles affected by this service bulletin:
    2013 Mazda CX-5
    2014 Mazda CX-5
    2015 Mazda CX-5
    2016 Mazda CX-5
    See More Service Bulletins
    Corrective action: Dealers will diagnose the condition and if confirmed, repair affected headlight units with modified parts designed to eliminate this condition.
    Warranty info: This service bulletin is being performed free of charge under the Mazda new-vehicle limited warranty.
    What owners should do: Call your local dealer with your vehicle's identification number to determine if your vehicle is involved in this service bulletin. You also can call Mazda at 800-222-5500 or the National Highway Traffic Safety Administration hotline at 888-327-4236. Reference TSB No. 0901416.



    The Leaky Gasket may mean moisture gets in and causes problems to LED circuit boards and/or build up on lenses. The Leaky Gasket also lets gas to escape and reacts with the coating on the inside of the lens.

    Hmm makes sense except.......do LEDs produce gas?
    Last edited by CX-5um; 11-08-2016 at 09:47 AM.

  2. #47
    Registered Member yrwei52's Avatar
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    Arrow Stains inside of LED Lenses

    Quote Originally Posted by CX-5um View Post
    ⋯ The Leaky Gasket may mean moisture gets in and causes problems to LED circuit boards and/or build up on lenses. The Leaky Gasket also lets gas to escape and reacts with the coating on the inside of the lens.
    Hmm makes sense except.......do LEDs produce gas?
    I believe the information from your source is incorrect. Here is more accurate description for the problem we have on LED headlights from the TSB:

    "This concern is caused by gas that emits from a gasket in the lamp unit.
    The gas adheres to the inner surface of the headlight lens and reacts with the anti-clouding coating and moisture in the air to create white milky stains.
    The gasket material has been improved to eliminate this concern.
    "

    So the culprit is from the headlight gasket itself which emits wrong gas into the LED and HID headlight environment.

    TSB on headlight defect 2016 CX5

  3. #48
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    Very concerned about these headlamps , sitting in dealer now replace passenger side lamp unit due to flickering ,

  4. #49
    Registered Member CX-5um's Avatar

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    Quote Originally Posted by yrwei52 View Post
    I believe the information from your source is incorrect. Here is more accurate description for the problem we have on LED headlights from the TSB:

    "This concern is caused by gas that emits from a gasket in the lamp unit.
    The gas adheres to the inner surface of the headlight lens and reacts with the anti-clouding coating and moisture in the air to create white milky stains.
    The gasket material has been improved to eliminate this concern.
    "

    So the culprit is from the headlight gasket itself which emits wrong gas into the LED and HID headlight environment.

    TSB on headlight defect 2016 CX5
    CX-5 owners should take their cars to the dealership and discuss TSB No. 0901416 which mentions the headlight gasket leak which explains the lenses and lighting being compromised.

    That said this thread was regarding the LED DRL's flickering. There's no TSB yet? Makes me wonder if its related to the gasket leak as per TSB 0901416.

  5. #50
    Registered Member yrwei52's Avatar
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    Arrow Daytime running lights dim/flickering

    Quote Originally Posted by CX-5um View Post
    CX-5 owners should take their cars to the dealership and discuss TSB No. 0901416 which mentions the headlight gasket leak which explains the lenses and lighting being compromised.

    That said this thread was regarding the LED DRL's flickering. There's no TSB yet? Makes me wonder if its related to the gasket leak as per TSB 0901416.
    The actual TSB doesn't say the gasket is leaking water or gas as the LED and HID headlight unit is not a sealed environment. The problem of white milky stain is from the gasket made by some material which emits wrong gas. The moisture existing inside of the LED headlight unit is "normal" and the dim or flickering DRLs is caused by some bad batch of electronic parts which got assembled on the LED's printed circuit board.

    "REPAIR PROCEDURE
    NOTE: Foggy lenses due to condensation is a natural phenomenon. Do not replace the head lamp unit(s) for foggy lenses.
    "

    White Milky Stains On Inner Surface Of Headlight Lens Ė 2013-2016 Mazda CX-5

  6. #51
    Registered Member halfast3's Avatar

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    Quote Originally Posted by yrwei52 View Post
    Yeah, the Tech Package is a barging and that's why I always recommend getting Tech Package during the new car purchase if one wants the brighter LED headlights and cool LED DRLs, and don't even think about trying to convert them later!

    Unfortunately Mazda's quality and reliability are not the best from Japan. These different issues many people have encountered so far on CX-5's LED headlights are the evidence of just that.

    No, we have simpler mechanical mechanism on Auto-Leveling and AFS with motors turning the projectors up-and-down and left-and-right. But other regions have ALH which uses array of LEDs aiming at different directions (not just low and high beams!) and controlled by the electronic module for on-and-off on appropriate sections automatically based on the analysis of the image from Forward Sensing Camera on the windshield. ALH can turn some of the middle section LEDs off automatically when you're following a car and not to blind the driver at front. There's no mechanical moving parts so in theory they should last forever.

    No. there's nothing in US spec CX-5 that is even close to the ALH. They're completely different system. Not to mention any possibility of turning the ALH or similar function on! That's simply a pipe dream! (boom08)
    I recall that Audi submitted a request for ALH approval to US regulators a while back and were rejected. Go figure!

    Quote Originally Posted by Kedis82ZE8
    HID bulbs are relatively cheap these days though.
    ...which makes me very happy we have them instead of LEDs.
    Last edited by halfast3; 11-12-2016 at 09:47 PM.

  7. #52
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    ok, what's up with these 2016 LED tech DRL's ? was about to pull out of the parking lot when a fellow CX-5 GT pulled in and I noticed his passenger side LED DRL's were flickering, I asked him what year was his car and he said 2016.5, I told him his passenger side DRL was flickering, he came out and looked and he was pissed, he said it a brand new car!! he thanked me and he'll get dealer to replace under warranty.

  8. #53
    i-ACTIV AWD Aficionado Kedis82ZE8's Avatar
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    Yeah... HID bulbs are now over 20 years old and happy to have it as well (early 90's BMW 7 series / '96 Lincoln Mark VIII domestic)... it gives me the light I need as well as the reliability. If reliability falls short... as stated cheap to fix.

    EDIT: It does seem like some growing pains.... I guess best advice at this point is to keep an eye on issue and get it fixed under warranty.


    Quote Originally Posted by halfast3 View Post
    I recall that Audi submitted a request for ALH approval to US regulators a while back and were rejected. Go figure!

    ...which makes me very happy we have them instead of LEDs.
    Last edited by Kedis82ZE8; 11-19-2016 at 07:11 PM.
    '15 CX-5 GT 2.5L w/tech package - 50K Miles - https://www.oemvehicleparts.com/ (30% off "shipping" with code "MAZDAS247")

  9. #54
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    just had my driver's side DRL (halo LED) replaced on my 2016 CX-5 GT/tech under warranty (~24.5k miles). hopefully just got the "bad" batch of DRLs and these new ones have addressed the issue. at least it wasn't the actual headlamp that was out and only the DRL.

  10. #55
    Registered Member yrwei52's Avatar
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    Arrow Daytime running lights dim/flickering

    Quote Originally Posted by jcpharm View Post
    just had my driver's side DRL (halo LED) replaced on my 2016 CX-5 GT/tech under warranty (~24.5k miles). hopefully just got the "bad" batch of DRLs and these new ones have addressed the issue. at least it wasn't the actual headlamp that was out and only the DRL.
    Well, even though it was only problem from DRLs, but it's still expensive to fix, entire headlight assembly needs to get replaced! (boom08)

  11. #56
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    Quote Originally Posted by yrwei52 View Post
    Well, even though it was only problem from DRLs, but it's still expensive to fix, entire headlight assembly needs to get replaced! (boom08)
    Agree ! that's just crazy that the whole headlight has to come out with $$$$$ LED headlamp and $$$$$ AFS motors and everything else just for the DRL's. I wonder what Mazda do with the scrapped headlights?

    Mazda should make it easier to service the DRL's. It should be a LED strip like my friend's Accord,
    he had a faulty DRL flickering and all he did to fix it was swap out a $3 LED bulb


  12. #57
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    My passenger side DRL started dimming and flickering. It's a 2016. Bad thing is I just turned 62K miles. I'll look at the headlight this weekend. Bad thing is I'm now out of warranty.

  13. #58
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    Quote Originally Posted by Boland01 View Post
    My passenger side DRL started dimming and flickering. It's a 2016. Bad thing is I just turned 62K miles. I'll look at the headlight this weekend. Bad thing is I'm now out of warranty.
    wow, holy cow, 62,000 miles in one year ? you sure drive a lot, sucks that the headlights warranty is expired due do mileage and not time (3 years) seems unfair...

  14. #59
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    Here we go again. Back in November, I noticed my passenger side DRL was dim/flickering. Since it was out of warranty (mileage) I was looking at having to replace the whole headlight unit out of pocket which was going to cost $1500 or so. After many phone calls and heated conversations, I finally got Mazda to replace it as a "good will" gesture. Now, six months later, my driver side light is doing the same thing. This is really starting to sound like a quality control issue. I guess I get to see how far their good will extends! Wish me luck!

  15. #60
    Registered Member yrwei52's Avatar
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    Arrow Daytime running lights dim/flickering

    Quote Originally Posted by matadorpw View Post
    Here we go again. Back in November, I noticed my passenger side DRL was dim/flickering. Since it was out of warranty (mileage) I was looking at having to replace the whole headlight unit out of pocket which was going to cost $1500 or so. After many phone calls and heated conversations, I finally got Mazda to replace it as a "good will" gesture. Now, six months later, my driver side light is doing the same thing. This is really starting to sound like a quality control issue. I guess I get to see how far their good will extends! Wish me luck!
    We all need that if we have Tech Package ⋯ (Knock on wood)

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