2001 BMW 530i key remote is not working, please help!

My car is a 2001 530i with dinan upgrade.
My remote key did not work since last night, I tried to reprogram the key as other people tell me.
1 close all doors
2 put the key in to the ignition, and turn it to position 1 (the panel light came on, I can see the mileage, but the radio is not on)
3 turn the key back off
4 hold the unlock button and press the center lock button 3 times
5 release the unlock button

But nothing happened.

I took the car to a local shop where I used to go, (they are very good at fixing BMW, I never have any problem with them, they always know what wrong with my car) they don't know what wrong with the remote, they were guessing maybe is the key? They are not sure.

I drove to the dealer, and I talked to one person in the service department, he told me I have to let they take a look at the car (diagnosis), it will cost me $130. I told him ok and I make appointment. I also asked him how much they charge for reprogramming the key, he said it is free. So I asked him how to reprogram the key? Is it turns it on and off, hold and press 3 times and release the button. He said yes and he will try it for me, after his try, nothing happened, so he told me I need a new key.

But the key that I have looks brand new, all the label, sticker still on it. I bought this car for just 3 months, and it was fine for all those time.

So I went home and look up on the internet again, and I found a onine page saying check the central locking system, so I look for the central locking system. And the fuse was blown, I put a new one in, disconnect the wires to the actuator, and I tried the remote, it still not working, I tried reprogramming it, nothing happened. I diconnect the battery, and put it back on and try the remote. It did not work. So I connect the wires back to the actuator. Like 20 min later, I tried to reprogramming again, nothing happened, I look at the fuse again, it is blown.

Is anyone have any idea of what is wrong with the car or the key? If the actuator is bad, why after I replaced the fuse (the wires were disconnecting to the actuator) and I still can't use the remote or reprogramming it?

quote:
"I am still having the same issue again. I spoke to my brother (BMW Mech) and it seems that my Fuel Door actuator might need to be replaced. He told me as a temp solution, just to unplug the fuel door actuator and replace the fuse. This should keep the fuse from burning out until I am ready to replace the fuel actuator.

But I do have the same problems, replace the fuse and a few minutes later or right away the fuse is blown. As soon as I can take my car up to see him and tells me exactly what is wrong, I will update you guys. This will hopefully save you the cost for a diagnostic as I get them free. "