Acura ILX 2021 Owner's Manual page 574

uuIf a Tire Goes FlatuTemporarily Repairing a Flat Tire
Pressure Relief Button
572
7. Unplug the kit from the accessory power
socket.
8. Unscrew the air only hose from the tire
valve stem. Reinstall the valve cap.
9. Press the pressure relief button until the
gauge returns to 0 psi (0 kPa).
10. Repackage and properly stow the kit.