Keyless Receiver Removal/Installation: Hatchback-5HB

WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
Remove the following parts:
1. Rear package tray (See REAR PACKAGE TRAY REMOVAL/INSTALLATION .)
2. Trunk side upper trim (LH) (See TRUNK SIDE UPPER TRIM REMOVAL/INSTALLATION .)
3. C-pillar trim (LH) (See C-PILLAR TRIM REMOVAL/INSTALLATION .)
Disconnect the connector.

Fig 1: Keyless Receiver Bolt With Torque Specification
Courtesy of MAZDA MOTORS CORP.
Remove the bolt.
Remove the keyless receiver.
Install in the reverse order of removal.