No
what answer!
nothing works and I replaced the battery. to the fob
You have a failure with the key or the computer that senses the chip in the key.
You normally do not have to reprogram the key when you replace the battery. If you do you will have to contact your VW dealer.
You'll probably need to have this done at a dealership.
2006 jetta tdi both key remote not working
the bastards at the dealership have to do it...had it done, not cheap.
Take it to your dealership they would be the one to help you with that.
your key fob can only be programed by the local gm dealer.
It can cost as much as about 300 dollars to re-key the average car. This varies depending on the type of ignition and the type of key.
Check ebay. A quick search there using "pacifica key" turns up a lot of results including complete new keys and key shells w/blade.