It is normal for the wheel to lock ilke this. I remember way back in the day when my parents first got a new 995 4Runner SR5. My mom drove it for the first time --- and lets just say we were stuck in the mall parking lot for an hour while she tried to figure out how to get the steering wheel "unstuck". Just turn the steering wheel --- and while holding it in a turned position, turn the key in the ignition. It takes a little getting used to .... cause the 4Runner seems to lock pretty hard sometimes.
BTW : A quick read of the instruction manual would have solved your problem ....
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Titanium 2005 4Runner Sport V8
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*Replaced '05 JBL headunit with '06 JBL headunit
http://www.psy.fsu.edu/~thornton/4ru...ld-and-new.jpg