How often or how many miles does this car require a transmission fluid change?
Your manual has a service schedule in it.
It’s not so simple . . .
Your vehicle uses letters and numbers to denote which service is being called for
The letter comes first, either A or B
A is just an oil change, B is an oil change plus inspection(s) of various items
Then a number follows the letter
3 means an automatic transmission fluid change is required. Use ONLY HCF-2. There is more than one kind of Honda transmission fluid out there. Just get it at the dealer, when it’s due. There is a footnote which basically describes severe service driving, and it would be due every 25,000 miles, which is short distance, stop and go, lots of idling, towing, etc. A lot of people fall into that category. Better safe than sorry.
Your owner’s manual will tell you which buttons to press to see what service is required.