The yellowing is caused by atmospheric oxygen permeation into one of the LCD layers from the edge, which isn't completely sealed. Space Shuttle cockpit displays had the same issue, if it makes anyone feel any better. The UV reconditioning is pretty nifty - I had not heard of that before.
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UV Worked great on my badly yellowed screen
- Thread starter Kevin Bohacz
- Start date
rgedad
Member
Had my 2018 MX (received 6/2018) 100D yellow screen issue fixed via the UV Process just a couple of weeks ago at the Dallas SC. I live about 45 minutes away from the service center. I did not know the process took about 3 hours when I went to the appointment. They did offer an UBER ride home while they did it, but I did not want to spent 1.5 hours in traffic. Luckily I had my laptop in the car to keep me occupied while I waited, and there was a fast food place down the block to keep my belly full while I waited.
There was a slight chemical odor in the car when I got in, like curing resin, but it quickly went away by the next day.
They did not charge me anything - so it must have been on warrantee.
There was a slight chemical odor in the car when I got in, like curing resin, but it quickly went away by the next day.
They did not charge me anything - so it must have been on warrantee.
tbee
Member
I went to a lawyer to check my assumption that tesla's position is bs, and he laughed and agreed. So it is covered, at least here in the Netherlands, but we are more conservative than the US.
The fix really works, the only question is if it will last, because it only treats the symptom, not the cause. I already said that if it does not, I will declare this a faulty repair and still claim warranty.
The fix really works, the only question is if it will last, because it only treats the symptom, not the cause. I already said that if it does not, I will declare this a faulty repair and still claim warranty.
RedOctober
Member
This may be the way to go because they replaced my screen a year ago and it’s already yellowing. Now to find out if this process can be a DIY project.
CBPfromTN
Member
Maybe I have missed the answer to this but does anyone know what causes the touchscreen to "yellow?" Could it be parking it in the hot sun all day or something else? I can't think of anything else but the car sitting in the hot sun all day, day after day, week after week, etc. OR is there another known cause? Thanks!
LateToTheParty
Member
Here is the before picture. I’m excited to see the results tomorrow when I pick it up!
David in NC
Member
Fantastic results.... btw, I love the Vanilla Ice picture on your One Hit Wonders stream 
... so what you're saying is:
"If there was a problem
Yo, [Tesla will] solve it,
Check out the hook while my DJ revolves it"
... so what you're saying is:"If there was a problem
Yo, [Tesla will] solve it,
Check out the hook while my DJ revolves it"
I'm not quite sure if it's due to oxygen into the LCD in tesla's case. UV would not be able to reverse that issue if oxygen did get into the polarizers etc.
It looks like incomplete cure of the LOCA (liquid optically clear adhesive) that's used to bond the LCD to the touch panel and subsequently the cover glass. The photoinitiators in the liquid OCA can oxidize over time if they haven't all been consumed. The yellowing just looks like incomplete cure due to bad QA (unsurprising). It's probably a 310-340nm UV led with high intensity. For anybody that's interested here are some of the common tools to cure the UV liquid OCAs https://dymax.com/light-curing-equipment/
Skotty
2014 S P85 | 2023 F-150L
Tesla has suggested that the UV fix is not permanent, but maybe it was just CYA language just in case. Because if it's an incomplete cure, it seems like the UV treatment should be a permanent fix, and I really hope that's the case.
You probably have worked on Space Shuttle program b4
Anyway, this yellow around the edge of LCD also happens on smart phones before. An iPhone forum discussion Apple replaced LCD of iPhone 5 (with yellow or green edge lcd) five years go.
User mixanikosgr in this forum mentioned UV fix (4th post from the top) for smart phone lcd back in 2015:
Yellow tint on edge of screen
I digged a little more and I found this site talking about UV causing yellow color on plastic. To fix this, Retr0bright technique was developed. The technique uses more UV (!!!) and Hydrogen Peroxide. I wonder if Tesla engineers are using the same concept of the technique and also if they use Hydrogen Peroxide "gel" in addition to the UV light.
Yellowing: The Plastic Equivalent Of A Sunburn
Yellowing: The Plastic Equivalent Of A Sunburn
The Retr0bright link in the Hackaday website does not work as they said. The new one is here:
http://www.retr0bright.com
http://www.retr0bright.com
KArnold
Active Member
They don't need CYA language - that would imply thru intend to tell the truth. I'm hoping it's another of their many lies.
Owned M3 for 14 months. No issue with the screen so far.
It's exactly CYA language, ... CTA language in this case. Anyone hardware guy who is working in engineering should know this. It simply because Tesla does not have enough time to see the long effect of the fix. Tesla engineers probably came up this fix (bandaid solution) at beginning of this year. After a few months of beta test, now they are sending the tool to every sc. Since no one else have done this before, they just don't know how long the improved result will last. The core of the problem is at the LCD factory/supplier. I bet Tesla is having a headache with their LCD suppliers.
Uncle Paul
Well-Known Member
Seems that Tesla latest policy is try the UV treatment first. If it does not cure the problem, they will replace your screen under warranty.
Problem seems that even if they replace your very expensive screen there is always the possibility that it will yellow as well. Don't think they are doing any more 2nd replacement.
Field reports seem to indicate that the UV treatment is pretty effective.
Problem seems that even if they replace your very expensive screen there is always the possibility that it will yellow as well. Don't think they are doing any more 2nd replacement.
Field reports seem to indicate that the UV treatment is pretty effective.
LateToTheParty
Member
Picked mine up this evening after having the yellow border fixed.
Looks great to me!
Looks great to me!
I chatted with my local service center today. They stated it would cost $40 for a one time courtesy fix for the yellow band. What I don't like about this statement is: 1) They say it's a one time courtesy. How do we know how long this 'fix' will last? I don't want any limitations on future fixes and 2) They want to charge me $40 for the fix. This is unacceptable to me as this is obviously a defect, not a 'cosmetic' issue. My car is less than three years old and always garaged, rarely parked in the heat. Yet, I have the yellow band. I have filed a case with NCDS for an Arbiter to be assigned. We shall see what happens next.
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