Asus tuf gaming f15 laptop on warrenty

Was wondering if i was able to open the laptop up to clean out the fans since i was noticing higher temps then usual even on a laptop cooling pad and it had a adjustable height feature to i just made it to the 3rd level to make sure there's def space for it to suck in cold air n push out the hot air

Warrenty sticker is no longer gone too but it said 2 years of warrenty and there's atleast a year and months left, friend saod asus workers prob voided it after changing my motherboard for a new one to fix a screen problem of not being able to see anything