For Third-row Seat

WARNING: This page is about a different car, the 2004 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Rear heat duct No. 4

Disconnect the negative battery cable.
Remove the third-row seat. (See THIRD-ROW SEAT REMOVAL/INSTALLATION .)
Remove the passenger-side rear side trim. (See REAR SIDE TRIM REMOVAL/INSTALLATION .)
Remove the heat duct No. 4.
Install in the reverse order of removal.

Fig 1: Removing Rear Heat Duct No. 4
Courtesy of MAZDA MOTORS CORP.

Rear heat duct No. 5

Disconnect the negative battery cable.
Fold the third-row seat into rear space.
Remove the passenger-side rear side trim. (See REAR SIDE TRIM REMOVAL/INSTALLATION .)
Remove the rear heat duct No. 4.
Remove the rear heater grilles.
Partially peel off the front floor covering.
Remove in the order indicated in the illustration.

Fig 2: Removing Order Of Rear Heat Duct
Courtesy of MAZDA MOTORS CORP.

Fig 3: Removing/Installing Rear Heat Duct
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.