The HDS does not communicate with the BSI system (Blind Spot Information (BSI) System)

Diagnostic procedure 

• Symptom troubleshooting - Refer to: Blind Spot Information (BSI) System Symptom Troubleshooting - The buzzer does not sound ()  or Blind Spot Information (BSI) System Symptom Troubleshooting - The BSI does not come on when other vehicles are in the detectable area (No indication) ()  or Blind Spot Information (BSI) System Symptom Troubleshooting - The HDS does not communicate with the BSI system ()  or Blind Spot Information (BSI) System Symptom Troubleshooting - The BSI alert indicator comes on when no other vehicle is in the detectable area (Wrong indication) () .

Also check for 

Incorrect HDS software.