Remote Transmitter Disassembly/Assembly: Disassembly

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

Fig 1: Pulling Auxiliary Key Out
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: Detaching Tabs A From 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.

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

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