1. Disconnect the negative battery cable..
2. Disconnect the connector..
3. Verify the resistance between bass-box terminals.

If not within the specification, replace the bass-box.

0.9—1.1 ohms
Auxiliary Jack/Usb Port Removal/Installation
Bass Box Removal/InstallationSettings
NOTE
Depending on the grade and specification, the screen display may differ.
Select the icon on the home
screen and display the Settings screen.
Switch the tab and select the setting item you want to change.
You can customize settings in the setup display as follows:
Tab
...
On Board Diagnostic System PID/Data Monitor Inspection [FS5 A EL]
NOTE:
The PID data screen function is used for monitoring the calculated value
of input/output signals in the module. Therefore, if the monitored value of
the output parts is not within the specification, it is necessary to inspect
the monitored value of input parts corresponding to ...
No.6 Bsm Indicator Light Flashes While Not Under Bsm Indicator Light Flashing
Conditions (No Combination Switch Operation (Turn Signal Switch)) [Blind Spot Monitoring
(Bsm)]
6
BSM indicator light flashes while not under BSM indicator light-flashing
conditions (no combination switch operation (turn signal switch)
Description
The BSM indicator light flashes despite not satisfying the BSM indicator
l ...