Tian - you might want to look into the process of removing the hood latch as explained in an earlier post in this thread. That may be the only way to access your battery if your key won't open the door. Although, it was mentioned that a locksmith had the car open in just a few seconds, so that might be an option but make sure the locksmith knows what he is doing and doesn't set off the side airbag (per Doc's warning).

RL