Center armrest (if so equipped)
Nissan Altima / Nissan Altima Owners Manual / Safety—Seats, seat belts and supplemental restraint system / Seats / Folding rear seat /  Center armrest (if so equipped)

Pull the armrest down until it is horizontal.
See also:
Audio main operation
   POWER/VOLUME control:
Place the ignition switch in the ACC or ON 
position. Press the PWR button while the system 
is off to call up the mode (radio, CD or AUX) that 
was playing immediately befor ...
   
Connecting iPod®
   
To connect an iPod® to the vehicle so that the 
iPod® can be controlled with the audio system 
controls and display screen, use the USB jack 
located in the center console. Open the 
protectiv ...
   
Under the Hood
   Base engine is a 152-horsepower, 2.5-liter dual-overhead camshaft, 
inline-four-cylinder that makes 171 pounds-feet of torque, mated to a five-speed 
manual transmission
261-hp, 4.0-liter dual-over ...
   
