Welcome to the forum Vansan.
When you have a chance, head over to the Newbie Section and say "Hi".
Tell us a little about yourself and your ride.
That way we can welcome you all proper like.
There is a temperature valve in the transmission lines that go to the cooler. Once that opens up, it is possible you do not have enough fluid for the transmission to operate correctly.
As Fastcompany said; You will need to get the leak fixed. Then have the fluid checked and filled by a garage with the right equipment to do it.
When you have a chance, head over to the Newbie Section and say "Hi".
Tell us a little about yourself and your ride.
That way we can welcome you all proper like.
There is a temperature valve in the transmission lines that go to the cooler. Once that opens up, it is possible you do not have enough fluid for the transmission to operate correctly.
As Fastcompany said; You will need to get the leak fixed. Then have the fluid checked and filled by a garage with the right equipment to do it.