Rear Seat Warmer Control Unit Removal/Installation

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Fold the rear seat back.
Partially peel back the trunk mat.
Disconnect the connector.

Fig 1: Disconnecting Rear Seat Warmer Control Unit Connector
Courtesy of MAZDA MOTORS CORP.
Remove the bolt.
Remove the rear seat warmer control unit.
Install in the reverse order of removal.