SERVICE INFORMATION This bulletin contains diagnostic information related to 2013 and 2014 Altima Sedan vehicles equipped with the Lane Departure Warning (LDW) and Blind Spot Warning (BSW) systems. Although the Electronic Service Manual (ESM) should be used primarily when inspecting, diagnosing, and repairing LDW / BSW related issues, the supplemental information in this bulletin will assist in these areas. See this bulletin for further detail.