Keyless unlock doesn't work.

[oldskewel]

Reprogrammed all successfully just now. Surgery averted.

Thanks for the confident recommendation for me to proceed. I had programmed them all (4 actually = 1 diamond key + 3 fobs) when I first got the keys after getting the car. With the recent flakiness, I was hesitant to mess up the working ones. But after the overnight charging, and now this re-programming, they are all solid again.

So data point for people - the remote (FZV) functionality on one of my keys just went dead, with 3 other remotes working just fine, with nothing to suggest why the one key died. And it was revived simply by this reprogramming. So somehow the FZV programming can completely stop working on one key with no hardware problems anywhere.