BSM OFF INDICATOR LIGHT DOES NOT ILLUMINATE WHILE BSM SYSTEM IS OFF [BLIND SPOT MONITORING (BSM)]

id0903d9015100

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

Description
BSM OFF indicator light does not illuminate while BSM system is off
•  BSM indicator light does not illuminate even though BSM OFF switch turns off the system after ignition switch is turned to 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] in the technical guide.
•  Malfunction in BSM OFF switch related parts
―  BSM OFF switch malfunction (stuck at off)
•  Instrument cluster does not illuminate BSM OFF indicator light
―  BSM control module (RH) malfunction
―  Instrument cluster malfunction

Diagnostic Procedure

Step

Inspection

Result

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