What makes this happen, and how can I fix this?


What happened here?

 

Heat plus moisture I am guessing. Maybe oils from skin contact, etc.

You may want to slice that area away, seal with something to stop it continuing, and repaint with a matching color.

 

I think there is a blend motor right there. Maybe it overheated and caused that.

Was there any noise etc? Did this happen in a day or was it gradual?

You can replace the entire panel, but not a fun job.

 

Drive while wearing shorts? My guess is 100% because of natural skin oil or a moisture lotion.

 

With the right leg extended to use the gas pedal, I can't see how there would be contact right there.

 

Our passenger door arm rest is kinda like that... we figured it was from an enthusiastic dog

 

Every body is different. My knee hits right there.

 

Yeah, my right leg hits there right below my knee.

 

The dark area is from dead skin, dirt and sweat/skin oils, which means a leg likely rubs on that area. The bubbling looks like the pain reacted to whatever is rubbing on it. All you can do at this point is re-paint.

 

BUG SPRAY!!

Trust me, deet, and/or brake clean etc - similar results, but the odds of you having bug spray on your knee and hitting that with shorts may be higher lol.

Nothing organic would do that - oily skin or whatever - no way. I've been hitting that stuff with cleaners and armorall for years with zero issues.