2004 TOYOTA SIENNA User Comment / Complaint

Liftgate closes unexpected without any input after being opened. it has closed on my wife's head, my 4 yr old, the bagger at the grocery store, and myself. my 4 yr old had a bruise on her head. this has been happening for about 2 months. it was just once in a while at first, but now it won't stay open at all without being supported by hand. i've gone to the local toyota dealer and they want to replace the "stays" at a cost to me of several hundreds of dollars. no repair has been made yet.