A number of forum posts on this. Lots of products out there to restore plastic. Ive been told that you don't want a product that has silicon in it though.

Sonax makes some great products as well.

 

Narvik gloss has a clear coat. When clear coat oxides, it turns milky, hazy, and will look purple on black paint.

I don't have this issue but, has anyone just tried to buff off the oxidized layer? It's really easy if you have a buffer and some basic skills or a good detail person if you don't. It can't hurt if that's not the problem.

 

Maybe the best solution is to get one of the mobile scratch repair companies to re-spray both mirror housings.

l assume you have these companies over in the USA. They visit your home and repair minor scuffs/dents etc on your driveway.

The costs are fairly low, typically £100-200 here in the UK
That's around $120-250?

 

This is a gloss black issue. It’s not something 303 can solve.

The mirrors - stems and surrounds / on mine are purple. But not the black painted mirror “cap”.

Also, my layman’s analysis as to what is fading to greyish purple is not the Narvik black gloss painted pieces — it’s the black gloss plastic pieces that are * not painted *. It’s not a Narvik + clearcoat issue.

 

Here’s a pic of my purpling mirrors. It’s like the plastic is decaying, not a paint issue…

 

It looks like UV damage.

 

Ironically - when I showed this to my very cool dealer svc advisor earlier this year after posting about it, first I got the "I don't see the issue". But then after a bit of discussion between us... she said probably best thing to do is remove them and paint them in the paint shop. And would I be interested in that? She was worried if they replaced, the new ones would just do it in 12-18-24 mos again.

Anyway, I haven't done it yet, but seems like a good idea to me. May add to next dealer visit.

 

it does…but the car is garage kept and barely outside really…

 

It does look like the start of clear coat failure. I hear you that it has been garaged but, if that one particular trim piece was manufactured out of standard it may be overly sensitive to that UV or acid damage. Since it's not just you, it seems like there's a batch like that out there.

Narvik gloss plastic, from what my dealer's body shop told me, does have a clear coat. They could be wrong and/or this could be the pigment molecules being bleached or breaking up.

Either way, it's not going to stop on its own.

Going back to the reason I asked, mine was delivered with scratches on the rear trim (same plastic). I told them I would rather deal with it myself. Here's how it went.







That plastic buffs very very nicely to a perfect mirror finish so, you can try it. It might temporarily fix the issue and you could use some ceramics to stop more damage. I agree the dealer should take care of it but, sometimes, being your own warranty is just easier.

 

I don't know if there was a fix that was found for this, what looks to be UV damage? I have the same happening to both driver and passenger side. Also a 2020....

Looking at diagrams, its part of the main housing which would mean replacing the whole $400 mirror housing... but I want to understand if later 21-23 models also have this issue.