Remote Transmitter Disassembly/Assembly: Disassembly

Press the knob on the remote transmitter and pull the auxiliary key out.

Fig 1: Pressing Knob On Remote Transmitter
Courtesy of MAZDA MOTORS CORP.
Insert a tape-wrapped flathead screwdriver into the notch on the remote transmitter and turn it in the direction of the arrow shown in the figure to detach tabs A from the remote transmitter.

Fig 2: Inserting Tape-Wrapped Flathead Screwdriver Into Notch On Remote Transmitter
Courtesy of MAZDA MOTORS CORP.
Insert a tape-wrapped flathead screwdriver between the remote transmitter and the cover and slide it in the direction of arrow (1) shown in the figure.
Turn the screwdriver in the direction of arrow (2) shown in the figure to detach tabs B of the cover from the remote transmitter.
Remove the cover.

Fig 3: Inserting Tape-Wrapped Flathead Screwdriver Between Remote Transmitter And Cover
Courtesy of MAZDA MOTORS CORP.
Remove the cap and the battery from the remote transmitter.

Fig 4: Identifying Cap, Battery And Remote Transmitter
Courtesy of MAZDA MOTORS CORP.