I noticed that the battery in my retarded flip out key was dieing slowly and it stopped working unless i was right on the car and pressed the unlock button multiple times. I went to walmart, took my key apart at the counter, put a brand new battery in it (#1620). Tried to unlock or lock car doors. nothing. pressed buttons multiple times. nothing. started car. tried buttons again. nothing. did the manual reprogram (door open, hit door lock/unlock, turned key 3 times and open/closed door 3 times). Doors locked and unlocked, but still nothing. took key apart and put the battery tester to it. battery has full charge. bent out the tangs on the battery contact and the board. put it back together and NOTHING! what is wrong with this stupid thing? also to note, it's the only key i have!!! thank you in advance for any ideas.