My accord has 62000 miles on it and the transmission has an extended warrenty of 109K mile. For the warrenty purpose should I change the ATF by honda dealer?
If I am using Honda ATF bought from honda dealer and change (drain and refill) it by my self, the warrenty will still exist or not?
Thanks

In my opinion you should cover yourself and let the dealer do it and then they have a record of it being done for warranty purposes.

That's what I do.

Or go to a place that works on Hondas.

Don't have the transmission flushed, ever. It says that all you have to do is have documented mait, and even if you did go to a dealer, Honda in the end authorizes the replacement, and Honda does not own or operate it's dealers.

Yep

Dealer does it, it's their problem

You can do it yourself. Just save the receipts for the fluid and the washer as you have to buy them from the dealer anyways. Save yourself the money.