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Blind Spot Monitoring (BSM) Control Module Removal/Installation

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
  2. 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 .)
  3. Disconnect the connector.
    Fig 1: Locating BSM Control Module, Nut, Bolt And Connector
    G11540271Courtesy of MAZDA MOTORS CORP.
  4. Remove the nuts.(4SD)
  5. Remove the bolts.(5HB)
  6. Remove the BSM control module.
  7. Install in the reverse order of removal.
  8. 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.
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