[Leon]

I think the battery in mine is almost dead, but the light in the car doesnt blink green when I start it...sometimes I cant unlock the car or open the hatch by pressing the buttons on the car even if the key is on me. I'd say this happens about 20% of the time. not sure if its the battery or the actual key though...

The batteries are inexpensive. You may just want to replace it to avoid an unnecessary nuisance occurring when you least expect it. Also, if you replace the battery it should help you rule out your concern with the actual key! Good luck and let us know. (I see I'm real late to this post!)