Two problems related to alternator/generator/regulator have been reported for the 2009 Nissan Altima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Nissan Altima based on all problems reported for the 2009 Altima.
Driver side door lock stop functioning with the remote keyless entry fob. This is the only door that stopped working all the other doors function as intended. I believe it is a malfunction of the lock regulator.
Parked can in front of store and attmpted to start it but it would not start. Yellow "key missing" light comes on but it won't start. Key battery is new, car battery is new, won't jump start. Car is dead. Turns out to be the steering lock mechanism. Only 57, 000 miles and this is only one of many issues we have had with this car. New battery (2) new brake switch new alternator new a/c pump new front rotor.