Squeak from serp belt

I bought the taco a year and a half ago from the OO. It had 80 K on it. Has 100 K on it now. I changed the serp belt at 80,000 when I bought it. The AC compressor was swapped out at about 70 K by Toyota, I’ve noticed in the last month that mostly in the morning. I’m getting a squeal out of the serp belt. I just use my stethoscope on it, but I couldn’t hear anything odd. Are there any common issues with these that might be the problem? Tia

 

Sometimes the high pressure fuel pump makes a chirping noise, could possibly be that if not your belt.

 

May be the tensioners. I had to change them at 35k on a 2018.

 

Mine squeaks on any damp morning, even with a fresh belt. It goes away after a few seconds.

 

Thanks for the responses. I think I’ll bring it to the guy I use. I’ll report back my findings,

 

Since your drive belt has about 20K miles on it, maybe try some belt dressing to see it it quiets down.

https://www.walmart.com/ip/Prestone...5DAB766B63ABCD69AD&conditionGroupCode=1&gQT=1