my rear wiper has the 2 screws that hold the blade on, trying to find the one were the wiper slides on. The latches or holders are to hold the cargo cover when you pull it out, there on the left and right .
http://www.toyota-4runner.org/attachment.php?attachmentid=109482&stc=1&d=1391352255http://www.toyota-4runner.org/attachment.php?attachmentid=109483&stc=1&d=139135225http://www.toyota-4runner.org/attachment.php?attachmentid=109484&stc=1&d=13913522555
Couple from my phone.