Without Rear Seat Warmer System

Remove the rear seat center armrest. (See REAR SEAT CENTER ARMREST REMOVAL/INSTALLATION .)
Insert a remover tool into the gap between the cup holder and the rear seat center armrest in the direction of the arrow shown in the figure, and disengage the tabs.

Fig 1: Inserting Remover Tool Into Gap Between Cup Holder And Rear Seat Center Armrest
Courtesy of MAZDA MOTORS CORP.
Insert the remover tool into the gap between the cup holder and the rear seat center armrest in the direction of the arrow shown in the figure, and disengage the tabs.

Fig 2: Inserting Remover Tool Into Gap Between Cup Holder And Rear Seat Center Armrest
Courtesy of MAZDA MOTORS CORP.
Remove the cup holder in the direction of the arrow shown in the figure.

Fig 3: Removing Cup Holder
Courtesy of MAZDA MOTORS CORP.
Slide hook A in the order of arrows (1), (2), (3) shown in the figure to detach it from hook B.

Fig 4: Sliding Rear Center Armrest Trim Hooks
Courtesy of MAZDA MOTORS CORP.
Remove the rear seat center armrest trim.
Install in the reverse order of removal.