This is my first automatic car, always had manuals before.
I am wondering if it is possible to accidently, manually downshift the car into a lower gear when the revs for that gear are above redline? Lets assume I'm driving 90 mph in D and I wanted to shift to 2. Is this possible or is there a locking mechanism that prevents me from doing so? Is it possible to shift to 1 at speeds higher than 40 mph when I'm pressing the button in? I don't want to try it out and find out the hard (expensive) way.
Thanks in advance for your replies.

 

the purpose of an automatic tranny is to automatically switch gears....I don't think u can redline an automatic

 

When I rented a Misubitshi Spyder it had sport shift. And they had the gears locked so you couldn't downshift to a certain gear if you were at a certain speed. I'm sure nissan did the same thing. But who knows

 

No can do. You can physically move the shifter to a lower gear, but the computer will not allow the trans to downshift unless you are in the specified "safe" range.

 

I accidentally downshifted to 2nd when I was trying to get 3rd and I was going about 75... It moved the stick into the 2 position, but it just didn't downshift until I slowed down...