Nissan Altima 2007-2008
To arm the Supplemental Restraint System (SRS) system turn the ignition switch to OFF position. Connect the both battery cables starting with the positive cable first.
Nissan Altima 2009-2010
When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock when the push-button ignition switch is turned to LOCK position.)