The 2009 Nissan Altima has 3 recalls, the most serious being two separate issues that can cause sudden loss of vehicle control: lug nuts on certain 16-inch alloy wheels that can work loose and allow a wheel to detach, and front strut insulators that can fail and let the strut rod pull free from its mounting, destabilizing steering and handling without warning.
A separate structural recall affects a small number of vehicles built with an out-of-specification weld in the door assembly. That weld does not meet federal side impact protection standards, meaning the door structure may not perform as required during a side collision, reducing protection for occupants in that type of crash.