Why Remote Key for opel astra not working2002 14cc?

Answer 1

The soldering idee (see below) is good and al but first try to "re-pair" the remote with the car ignition, for some reason it gets unpaired sometimes (might be when changing the remote's battery),

1.Sit in the car,

2. Insert the key and switch the ignition-system to on (without starting the car),

3. Press the close or open button on the remote,

the door locks should operate a couple of times and the remote should now be pared. This might cause the spare remote to stop working just remember to pair it as well next time you want to use it, this means to press its button as you did with the first (within the first 30seconds after switching the ignition, step 2). Hope this helped. Cheers J van SA

It is a common problem with the Opel Astra remote keys. But it is easy ti fix. You need a soldering iron and a magnifier. Open the key (you can find out how to open the key in the "How to change remote key battery" in the Users manual). Check with the magnifier and you will see some broken conections betwen the battery and the circuit board. If you have a bit of skill you can solder the contacts yourself. If not it is better to ask someone with experience because the circuits are very close one to each other and you can and up making a bridge betwen them. Good luck!