Blind Spot Monitoring (BSM) Control Module Removal/Installation

WARNING: This page is about a different car, the 2018 Mazda 6. 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 .)
Remove the following parts:
1. Rear combination light (See REAR COMBINATION LIGHT REMOVAL/INSTALLATION .)
2. Rear splash shield (See SPLASH SHIELD REMOVAL/INSTALLATION .)
3. Rear bumper (See REAR BUMPER REMOVAL/INSTALLATION .)
Disconnect the connector.

Fig 1: Blind Spot Monitoring Control Module And Connector
Courtesy of MAZDA MOTORS CORP.

Remove in the order indicated in the table.

Fig 2: Blind Spot Monitoring Control Module, Bolt And Nut With Torque Specification

Courtesy of MAZDA MOTORS CORP.

COMPONENT DESCRIPTION

1	Bolt
2	Nut
3	Blind spot monitoring (BSM) control module

Install in the reverse order of removal.
Perform the BSM radar test. (See BLIND SPOT MONITORING (BSM) RADAR TEST .)
CAUTION:
- If the BSM control module is replaced, not performing the BSM radar test will cause a deviation in the radar emission angle which could result in the system not detecting a vehicle approaching from the rear correctly. If the BSM control module is replaced, perform the BSM radar test.