I've looked online and in the manual and can't find anything That works.
My key fob's battery was low so I picked up a 2032 battery and swapped them. The key wont work.
I can't figure out how to reprogram it. any tips?

 

I don't have a pilot, but when the battery for my fob for my Saturn ion was changed, the tech took the fob with the changed battery and the one with the old battery and pointed it to each other and pressed the button. then took the fob with the new battery to see if it would unlock the door, also if it would sound off the alarm to find the car. then to relock the door. he then changed the old battery on the back up fob and did the same. I am not sure if your fob works the same, but if you an find out who makes your fob, you might be able to look up on their site how to reset it. I was lucky in my case because the fob was installed by their company he worked for. You might want to take it to the dealership that you purchased the pilot from and get their assistance.

 

I would definetly take it to the dealer,one of my cars has a place in the glove box that reprogrammed the fob and another you hold down the lock and unlock button at the same time for 3 seconds. Various ways for sure.