Lumbar Support Unit Removal/Installation

WARNING: This page is about a different car, the 2017 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Handling a front seat equipped with a side air bag improperly can accidentally operate (deploy) the air bag, which may seriously injure you. Read the service warnings/cautions in the workshop service information before handling the front seat (side air bag integrated). (See AIR BAG SYSTEM SERVICE WARNINGS [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [TWO-STEP DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE WARNINGS [STANDARD DEPLOYMENT CONTROL SYSTEM] .) (See AIR BAG SYSTEM SERVICE CAUTIONS [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
If the sliding mechanisms on both sides are not locked after assembling the front seat, the front seat will operate accidentally while the vehicle is driven, which could result in serious injury. After assembling the front seat, shake it up and down and verify that the sliding mechanism on the both sides are locked.

CAUTION:

After the front seat has been removed, if the slider lever is operated and the front seat is reinstalled with the left/right slide positions deviated, the adjuster unit could be damaged. After removing a front seat, do not operate the slider lever.
Verify that there are no malfunctions in the forward/back slide of the seat and in the adjuster unit after installing a front seat.
When performing the procedure with a front seat removed from the vehicle, perform the procedure on a clean cloth so as not to damage or soil the seat.

Switch the ignition OFF (LOCK).
Disconnect the negative battery terminal and wait for 1 min. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION .)
Remove the front seat back trim. (See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION .)
Disconnect the lumbar support motor connector.
Disengage the hook shown in the figure from the front seat back frame.

Fig 1: Front Seat Back Frame, Lumbar Support Unit And Hook
Courtesy of MAZDA MOTORS CORP.
Disengage the hooks shown in the figure from the front seat back frame and remove the lumbar support unit.

Fig 2: Front Seat Back Frame Hooks
Courtesy of MAZDA MOTORS CORP.
Remove the support plate in the order of arrows (1) and (2) shown in the figure.

Fig 3: Removing Support Plate
Courtesy of MAZDA MOTORS CORP.
Install in the reverse order of removal.