Rear Seat Warmer Control Unit Removal/Installation

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
Fold the rear seat back.
Partially peel back the trunk covering.
Disconnect the connectors.

Fig 1: Identifying Rear Seat Warmer Control Unit Components
Courtesy of MAZDA MOTORS CORP.
Remove the bolt.
While detaching the guide from the body, remove the rear seat warmer control unit.
Install in the reverse order of removal.