This will vary depending on what year Acura MDX you are speaking of. 2001-2006 will require that you buy a factory replacement or buy a refill (just the rubber squeegee). In either case, the factory blade or the refill will come with illustrated instructions.
The newer 2007 and beyond MDX's take a special 12" rear wiper blade for the special rear arm. Your dealer will have them (may be expensive) or you may want to look into "Trico Exact Fit Rear Integral Blades" that fit these new special arms - you can find them online. (there may be others available too)
The good news is - specialized rear arms do not automatically mean the wiper blade is difficult to change - it just means you need to get the right blade for easy (and successful) installation.
Correct replacement windshield wiper blades are not only correct length, but also correct attachment. Never just buy by length only. Always lookup your vehicle in an application guide at the store or now-a-days you can 'lookup wiper size' online. The key to an easy install is correct size/correct part numbers.
The new replacement wiper will have step-by-step, illustrated instructions for removal and installation. Take your new wiper blade and instructions out to your vehicle and physically get the old and new wipers in your hands and take a look. The instructions will make 100% sense once you're looking and touching them.
Most wiper replacements snap off and on, do not require tools and take approximately 2-15 minutes.
The 2001-2006 Acura MDX has a special dealer-only rear wiper blade. Since you have to go to the dealer for the part, ask them for the procedure.
The 2003 Acura MDX has a special Acura rear wiper blade that you must get at the dealer - they are not available aftermarket. The front wipers are available aftermarket - see sources and related links below.
The 2008 Acura MDX takes 26" drivers side, 21" passenger side and a special 12" rear wiper blade that fits the special rear arm.
The 2001-2006 Acura MDX's have a proprietary rear wiper and you must either go to the dealer for a replacement wiper blade or you can buy aftermarket "refill inserts" which is just the rubber blade rather than the entire wiper blade and frame.
Unfortunately the 2001 Acura MDX has a special Acura rear wiper that you must go to the dealer to get. There are no aftermarket options available. You can get aftermarket front wipers for a better price however. See sources and related links below.
There is not a snap on replaceable blade for the 2003 MDX, get a replacement insert from your local dealer.
Remove plastic cap and after the nut
how do i fix the rear passenger window of my acura mdx
The same reservoir as the front wiper fluid. If the rears is not working then it may be frozen or blocked.
The 2002 Acura MDX has 37.8 in. of rear leg room.
The 2007 Acura MDX has 38.6 in. of rear head room.
The 2014 Acura MDX has 38.1 in. of rear head room.