Mazda Mazda3 2019 Owner's Manual page 439

5. Remove the cap using the
tape-wrapped flathead screwdriver.
6. Remove the battery using
tape-wrapped flathead screwdriver.
7. Insert a new battery into the transmitter
so that the positive pole is facing up.
8. Install the cap.
Owner Maintenance
9. Install the upper cover.
10. Insert the tabs of the lower cover into
the slots of the transmitter and install
the lower cover.
Maintenance and Care
6-27