If the vehicle battery is dead or there is a malfunction in the electrical system and the liftgate cannot be opened, perform the following procedure as an emergency measure to open it:
Fold down the rear seatbacks.
Refer to Split/One-piece Folding the Seatback (Search).
Remove cover on the interior surface of the liftgate using a flathead screwdriver.
Using a flathead screwdriver, open the inner cover.
Using 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.