Purpose
The blind spot monitoring (BSM) system can be turned on or off optionally by the driver.
Function
The switch operation signal is sent to the instrument cluster.
Construction
The BSM OFF switch is built into the cluster switch.
The resistance is built into each switch.

Operation
When the BSM OFF switch operates, the switch operation signal is sent to the instrument cluster.
The instrument cluster sends a BSM OFF switch operation signal to the BSM control module based on the received voltage value (switch operation signal).
The BSM control module switches the BSM system on/off when it receives the BSM OFF switch operation signal from the instrument cluster.

Fail-safe
Function not equipped.
Blind Spot Monitoring (Bsm) Off Indicator Light
Blind Spot Monitoring (Bsm) Off Switch InspectionRear Door Checker Removal/Installation
1. Fully close the rear door glass.
2. Disconnect the negative battery cable..
3. Remove the rear door trim..
4. Remove the rear door speaker..
5. Remove bolt.
6. Remove nuts.
7. Pull out the rear door checker from the rear speaker installation hole.
8. Install in the reverse ...
Sae Standards
In accordance with new regulations, SAE (Society of Automotive Engineers)
standard names and abbreviations are now used in this manual. The table below
lists the names and abbreviations that have been used in Mazda manuals up to
now and their SAE equivalents.
...
Car Navigation System
Outline
The car-navigation system displays point-of-origin and road guidance maps
via the audio unit display and provides guidance and information to the desired
point of destination.
NOTE:
For the car-navigation system operation, refer to the owner's manual.
...