If the vehicle battery is dead or there is a malfunction in the electrical system and the liftgate can not be opened, perform the following procedure as an emergency measure to open it:
Remove the cap on the interior surface of the liftgate with a flathead screwdriver.
Turn the lever to the right to unlock the liftgate.
After performing this emergency measure, have the vehicle inspected at an Authorized Mazda Dealer as soon as possible.