The only part of your new motor that isn’t warrantable is your remote and this is due to the fact that they often get left on the car dashboard in the sun or they get moisture damage from the steam in the bathroom or left in pockets when getting a wash in the machine.
It is a good idea to have a a keypad installed on your garage wall so that you can always get in if you happen to lose your remote. If your remote is not working always check to see if the battery needs replacing.