Lane Keeping System with Blind Spot Assist
The lane keeping aid warning lamp or yellow lane marking in your instrument cluster indicate blind spot assist activation. In addition, the blind spot information system alert indicator flashes on the exterior mirror on the same side as the detection. For more information  See   Blind Spot Information System
Blind Spot Assist Information Messages

Message   Details  
Blind Spot Assist Not Available Trailer Attached
Displays if you attach a trailer to your vehicle.  
Blind Spot Assist Not Available Side Sensor Blocked
Displays if the blind spot information system sensors are blocked.  
Blind Spot Assist System fault
The system has detected a fault that requires service.Have your vehicle checked as soon as possible.