Will this work if my Pilot doesn't have heated mirrors from the factory?

The lens will fit your mirror housing, but the heating element won't function without the factory wiring and control module. You can still use it as a non-heated replacement; it won't damage anything.

Do I need tools or hardware to install this?

Installation requires basic hand tools to remove the old glass and secure the new lens into the existing mirror housing. No additional fasteners or clips are needed beyond what came with your vehicle's original mirror assembly.

What if the glass doesn't fit or the heating doesn't work?

Test-fit the lens in your mirror housing before committing to full installation. If the heating element fails to activate after install on an equipped vehicle, verify the factory connector is fully seated and undamaged; refer to your owner's manual for the mirror circuit location.