I have a 2011 Toyota Sienna XLE V6 . Everytime I turn the AC on there's like squeaking sound coming from were the serpentine belt is.
Vehicle mileage? How old is your fan belt and what is its condition? Are your pulley bearings and belt tensioner OK? Is your AC compressor clutch making noise when it engages?
@chucktobias I bought the car from a dealership 4 years ago , supposedly they replaced the belt . The has 204,000 miles on it.
The belt could well be wearing out, or it could be pretty much anything in the belt's path. (The AC compressor engaging puts a heavy load on the belt drive system.) Further diagnosis is needed.
Of course since even if the dealer replaced the belt they probably installed the cheapest thing possible and it's been 4 years now you could replace it as a normal maintenance item to see if that helps.
For some reason, your browser is generating several duplicates when you submitted your post. (You posted this question six times over a few minutes time, using two different titles.)
Are you having network issues? If so, then please wait until you have a stable connection. If you are pressing the submit button more than once, please stop. Press it once, and wait for it to finish processing. Otherwise it creates more work for moderators to clean up, and eventually the system will automatically ban your from entering.
@chucktobias I'm sorry for sending several questions. I kept pressing submit . Next time I'll wait for a stable connection.
No problem, just making you aware of it, the site can be slow to respond. However if you return to the main page after pressing the submit button you'll see that your post is actually processed and appears almost immediately.