Mazda MX-5 2020 Owner's Manual page 394

Maintenance and Care
Owner Maintenance
5. Remove the battery cap, then remove
the battery.
CAUTION
Be careful not to allow the rubber
ring shown in the figure to be
scratched or damaged.
If the rubber ring detaches, reattach
it before inserting a new battery.
Rubber ring
6-36
6. Insert a new battery with the positive
pole facing up, and then cover the
battery with the battery cap.
7. Close the cover.
8. Reinsert the auxiliary key.
Type B
1. Remove the lower cover while
pressing the knob in the direction of
the arrow.