Mazda 3 2004 Owner's Manual page 536

2. Press in the tab to unlock the upper
cover.
3. Insert a tape-wrapped flathead
screwdriver into the gap and slide
it.
4. Twist the flathead screwdriver and
remove the upper cover.
Inspection and Servicing/Cleaning
5. Remove the cap using the
tape-wrapped flathead screwdriver.
6. Remove the battery using the
tape-wrapped flathead screwdriver.
7. Insert a new battery into the key so
that the positive pole is facing up.
8. Install the cap.
Key Inspection
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