Sometimes when I get out of my TL, I hear this squeak noise coming from the back of the car on the driver's side.
It also happens on my uncle's Altima.

I'm not complaining. Just curious what the noise is.

 

I'd bet it's a suspension bushing squeaking or maybe the pads moving on the brake rotor. I hear this on alot of cars, and a lot of Manufacturers. I don't think it's anything to worry about.

 

If it is bushing silicone spray should be a quick fix. Don't use anything petroleum based though. I am not positive on how the acuras suspension is set up so dont take my word for it. If you can get it up on a lift, the ones ment for tire allignement, with the two tracks you drive up on to, pull on the back so the car travels on the suspension and see if you can isolate the noise. We did that to my teachers car in auto class, but he didnt even have an independent suspension, some 1990 beater. But silicone spray fixed up the squeek.