Vehicle Interior, Rear

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Remove the trunk board. (See TRUNK BOARD REMOVAL/INSTALLATION .)
Disconnect the connector from the keyless antenna.

Fig 1: Identifying Keyless Antenna Connector
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- Disconnect the connector while holding the keyless antenna, otherwise the keyless antenna bracket could be damaged.
While pressing the keyless antenna bracket tab in the direction of arrow (1) shown in the figure, press it in the direction of arrow (2) to detach the keyless antenna bracket tab from the body.

Fig 2: Pressing Keyless Antenna Bracket Tab
Courtesy of MAZDA MOTORS CORP.
Remove the keyless antenna from the body.
Insert a tape-wrapped flathead screwdriver into the position shown in the figure.

Fig 3: Removing Keyless Antenna From Body
Courtesy of MAZDA MOTORS CORP.
Move the tape-wrapped flathead screwdriver in the direction of arrow (1) shown in the figure to press the keyless antenna bracket tab, and pull it in the direction of arrow (2) to detach the keyless antenna bracket from the keyless antenna.
Remove the keyless antenna bracket from the keyless antenna.
Install in the reverse order of removal.