BLIND SPOT MONITORING (BSM) OFF INDICATOR LIGHT ILLUMINATES CONTINUOUSLY [BLIND SPOT MONITORING (BSM) SYSTEM (Australian specs.)]

id1503b2021100

Caution
•  Configuration cannot be implemented correctly if only the blind spot monitoring (BSM) control module (RH) is replaced. When replacing the blind spot monitoring (BSM) control module (RH), it is necessary to replace the blind spot monitoring (BSM) control module (LH) at the same time.

Description
BLIND SPOT MONITORING (BSM) OFF INDICATOR LIGHT ILLUMINATES CONTINUOUSLY
•  The blind spot monitoring (BSM) OFF indicator light illuminates for 4 s or more without the blind spot monitoring (BSM) switch turning off after the ignition switch is turned to the ON position.
Possible Causes
Note
•  The detection performance of the blind spot monitoring (BSM) control module has limitations and the blind spot monitoring (BSM) system may not operate normally. For the detection performance limitations, refer to the [BLIND SPOT MONITORING (BSM) CONTROL MODULE [Australian specs.]] in the technical guide.
•  Malfunction in blind spot monitoring (BSM) switch related parts
―  Blind spot monitoring (BSM) switch malfunction (stuck at on)
•  Instrument cluster does not turn off blind spot monitoring (BSM) warning light
―  Blind spot monitoring (BSM) control module (RH) malfunction
―  Instrument cluster malfunction

Diagnostic Procedure

Step

Inspection

Result

Action
1
INSPECT IF MALFUNCTION IS IN BLIND SPOT MONITORING (BSM) SWITCH OR INSTRUMENT CLUSTER
•  Monitor the blind spot monitoring (BSM) control module (RH) PID BSM_OFF_IL using the M-MDS.
•  Turn the blind spot monitoring (BSM) switch on and off.
•  Does the PID BSM_OFF_IL monitoring value turn on and off according to the BSM switch operation?
Yes
Go to Step 3.
No
Go to the next step.
2
INSPECT BLIND SPOT MONITORING (BSM) SWITCH
•  Inspect the blind spot monitoring (BSM) switch.
•  Is the blind spot monitoring (BSM) switch normal?
Yes
Go to the next step.
No
Replace the blind spot monitoring (BSM) switch.
(See BLIND SPOT MONITORING (BSM) SWITCH REMOVAL/INSTALLATION.)
3
INSPECT IF MALFUNCTION IS IN INSTRUMENT CLUSTER OR BLIND SPOT MONITORING (BSM) CONTROL MODULE (RH)
•  Turn off the blind spot monitoring (BSM) OFF indicator light using the M-MDS instrument cluster active command modes WL+IL.
•  Does the blind spot monitoring (BSM) OFF indicator light turn off according to the active command modes?
Yes
Replace the blind spot monitoring (BSM) control module.
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [Australian specs.].)
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)