Its the container for my ft. lbs. torque wrench.

 

I just did this on my 2012 TL. Easy if you have a floor jack, 4 jack stands, torque wrench, extensions, fluid pump and breaker bar. I couldn't get the plugs out without the 3/8 drive breaker bar. My fluid pump was one where you put one hose in the bottle and the other in the fill hole. I pumped it in pretty quick. Took me about an hour and cost just under $30 for 3 qts of fluid and the two washers purchased from the Acura dealer. Next time I'll put more newspaper down to catch the fluid drips from my pump

 

Get a set of ramps and it's even quicker to do this. Also useful for oil changes.