4 Runner Head Unit . I'll be doing a head unit replacement in the next couple weeks. I may create/post a write-up if I have time, but I should be able to. 9" Android Car Multimedia Stereo Radio Audio DVD GPS ... (Gene Cummings) I removed this head unit by undoing the four bolts holding it in (two front bottom, two recessed on near the back on each side). Dynamic voice recognition capabilities vary by head unit. Make sure the seat belts are not twisted or caught under the seat and are arranged in their proper position and are ready to use. Head unit remains powered on after vehicle is shut off and must be manually turned off. Couldn't test the red wire in ACC mode, turns out my multimeter is shot and needs to be replaced. 2010 Toyota 4Runner | Hinnant Design Head Unit Inputs - Toyota 4Runner Forum - Largest 4Runner ... The...