I accidently turned the key when the car was already on and now when I start the car I have a flashing Maint Req. It flashes like for 5 times and then goes away. It never did that before.

 

As for the Maint required light its in your manual on how to reset it as well.
It means nothing more than its time for a oil change (when properly reset) Its designed to come on full at 7500 miles.
With the car off,Press and hold the Trip and Reset light with 1 hand, while holding them BOTH in turn your key
to the RUN position (not start but run) and continue to hold them in till they turn off. It takes about 10 seconds.
If you turn the key and then press teh buttons in you will change the Outside Temp settings

 

I have this same problem and found this thread. Thanks for the input! I'll try it in the morning.

 

Thanks....the reason I asked was beacuse when I bought the car did not have the manual but thanks I'll try it.