Nissan will be alerting owners of certain 2012-2013 Altima vehicles about a manufacturing problem that could lead to loss of control of their vehicles. According to Nissan, certain vehicles may have been manufactured with a transverse link bolt and power steering rack bolts that were not torqued to the proper specification. The bolt could loosen and fall off, increasing the risk of a vehicle accident. Owners wanting more information about the problem can contact Nissan customer services at 1-800-647-7261.