Amber Blinker Plastic Casing Looks melted

Hi.. i'm trying to figure out why this happened and how can I fix it. This happened with both blinkers. It has been this way for a very long time.. as long as I can remember. Seems like a defect, but I never took it in (stupid huh). Anyhow looking for some links on how to fix this. The blinkers still work so I think its just the plastic cover. But the bulbs must get too hot, maybe there are better bulbs I can buy. Here is a photo

 

yea that's normal. my melted so bad that my lense broke in half. dealership wont fix mine though.

 

Have a look at this. I had the same problem (not as severe) on my 2011 and the dealership replaced both under the Warranty Enhancement, even though I was the second owner and was out of warranty.
Check your VIN against the list in the attached thread (first link).

https://www.tacomaworld.com/threads/headlight-warranty-enhancement.341421/

 

There is a recall on the headlights for melted DTRL lenses

Edit : as above poster ^ we replied at the same time