replaced battery in car and in fobs, now car won't crank/start

What is your question?

car was starting just fine on Friday afternoon.. then, after starting it and moving around in a parking lot, it wouldn't even try to crank. The battery is 3 to 3 and 1/2 years old.. Charged it, still no start, after replacing batteries in both key fobs.. Replaced battery, still won't start.. Was told by a mechanic friend that fobs need to be reset with the car's computer..

What makes this problem better or worse?

Hot outside

How long has your 2010 BMW 535i had this problem?

just started