I do not see aftermarket replacement wiper blades nor wiper refills listed in the aftermarket wiper catalogs for the 2006 Toyota 4 Runner. This would possibly indicate that the rear wiper was a proprietary Toyota technology/design and you may have to go to the dealer for the parts and possibly labor. Before doing this (because its usually a little more expensive going through the dealer), you may want to visit some internet forums and see if there's other ideas out there. Google "toyota 4 runner forums" then search "rear wiper 2006" once in the forums. I'm sure there's rapport on this topic.
The rear wiper blade for that vehicle is a dealer-only purchase (no aftermarkets available). Ask the dealer for the procedure when you purchase the rear wiper blade.
The Toyota Highlander rear wiper blade is held in place by two retaining clips. Remove the retaining clips and the wiper blade will slide out.
This answer will vary depending on the year of the Toyota 4Runner. I do not see a rear wiper listed for 1992-2002 & 2010+, so if it has one, its a special toyota-only wiper that you can only get at the dealer. In that case ask the dealer how to change it. For 2003-2009 Toyota 4Runners, there is an aftermarket wiper blade available, but it is a fairly specialized design that is difficult to find in stores. See sources and related links below for information on the wiper blade as well as an installation video.
http://www.ehow.com/how_4454148_replace-wiper-blades-toyota-corolla.html
Correct wiper blade size depends on the year of the Toyota Corolla. Once you have the make, model and year then look-up the correct wiper sizes. See related links to lookup some options for any year corolla.
The 2005 Toyota RAV4 has a "Roc Lock 2" rear wiper arm attachment which is actually quite easy to change once you get the right replacement rear wiper blade (which can be challenging to find). See related links below for the correct wiper blade and for an installation video.
Once you find the correct rear wiper blade it is easy. See sources and related links below for video and info on the rear wiper blade.
The Toyota 4-Runner has the most common hook-end wiper arms. See sources and related links below for installation videos. Also, purchase the replacement blades first and there will be additional instructions/illustrations on the replacement packages. Locate and press the tab or button where the wiper blade is inserted into the hook of the wiper arm and pull wiper blade out of hook. You may have to rotate and flex the blade to make enough clearance for the hook to pass through.
The 2002 Toyota Highlander has a "Rock Loc 2" rear wiper arm which is incredibly simple to change once you find the difficult to find rear wiper blade. See related links below for information on the rear wiper blade and for installation videos.
The 2008 Toyota Highlander has a "Roc Lock 2" rear wiper arm attachment which is extremely easy to change once you find the correct replacement rear wiper blade (which can actually be hard to find). See related links below.
The 2005 Toyota Sienna had a production change mid-year that affected the wiper configuration.Step 1 is to measure the length of the blade on your vehicle. "Early" Production 2005 Toyota Sienna: 14" Special Rear Wiper Blade"Late" Production 2005 Toyota Sienna: 16" Standard Rear Wiper BladeStep 2 is to be sure you get the right replacement wiper blades.Step 3: The replacement wiper blades will come with simple-to-follow, step-by-step, illustrated instructions
I do not see aftermarket replacement rear wiper blades nor rear blade refills listed in the aftermarket wiper catalogs for the 2004 Toyota 4 Runner. The rear wiper was a proprietary technology/design and you may have to go to the dealer for the parts and possibly labor. Before doing this (because its usually a little more expensive at the dealer), you may want to visit some internet forums and see if there's other ideas out there. Google "toyota 4 runner forums" then search "rear wiper" once in the forums. I'm sure there's rapport on this topic. As far as front wiper blades, The 2004 Toyota 4 Runner takes 22" drivers side and 20" passenger side replacement windshield wiper blades and aftermarket wipers are available.