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BSM Indicator Light Does Not Flash While Under BSM Indicator Light-Flashing Conditions (With Light Switch Operation (Turn Signal Switch)): Notes

BSM INDICATOR LIGHT DETECTION CONDITION AND POSSIBLE CAUSE

Description  BSM indicator light does not flash while under BSM indicator light-flashing conditions (with combination switch operation (turn signal switch)) 
  • The BSM indicator light does not flash or illuminate continuously, but the conditions to flash the BSM indicator light are satisfied (vehicle speed 10 km/h {6.2 mph} or more  , turn signal on, and vehicle in warning zone).
  • BSM indicator light does not flash or illuminate continuously, but turn signals are on.
Possible Causes 
NOTE:
  • This malfunction symptom is basically the same as symptom "BSM indicator light does not illuminate while under BSM indicator light-illumination conditions".
  • The BSM control module mistakenly recognizes a vehicle as being outside of the warning zone when it is actually inside of it.
    • Radar (BSM control module integrated) is not emitted inside of warning zone (unable to emit radar inside warning zone)
      • Damage, deformity or looseness to installation bracket or vehicle frame (including moderate impacts).
      • Malfunction in steering angle signal (communication error between start stop unit and BSM control module, or EPS control module malfunction).
      • Problem with rear bumper such as dirt on radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application.
    • BSM control module does not receive echo-back correctly
      • BSM control module (radar) malfunction
      • Problem with rear bumper such as dirt on radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application.
      NOTE:
      • Rear bumper problems such defective installation of rear bumper, excessive dirt on radar emitting/receiving area, sticker adhesion (including transparent types), repairs to rear bumper using putty
      • Non-genuine bumper or paint, or installation of after-market parts negatively affecting radar echo-back ability
    • After-market electrical parts interfere with BSM system
  • BSM does not recognize vehicle speed correctly (BSM control module mistakenly recognizes vehicle speed as being within 10 km/h {6.2 mph} or more 
    • PCM communication error with BSM control module
    • Malfunction in ABS wheel speed sensor related parts
  • Malfunction in BSM indicator light related parts
    • Open circuit in wiring harness between BSM indicator light and BSM control module
    • Open circuit in wiring harness or poor ground between BSM control module and ground
    • BSM indicator light malfunction
  • Signal is not input for turn signal
    • Combination switch (turn signal switch) malfunction
    • Open circuit in wiring harness between combination switch (turn signal switch) and start stop unit
    • Communication error between start stop unit and BSM control module
    • BSM control module malfunction