On level 2, if the car had already finished charging (charge light off), the remote works on the first try almost every time. However, if the car is charging, it usually takes three tries before it takes. Each time it errors, I just wait a second or two after the remote beeps and press send again. On level 1, first try every time.
If your remote errors when turning on, blocking you from any settings, and you're fairly close to the car with the antenna extended, the connector to the antenna in the car may have come unplugged. I discovered this with my car having a very short range. I was relocating an antenna for my OVMS module, and I discovered this connector. I plugged it in and now my remote works from 3 times further away. It is a pain to get to, though. It's under a difficult to remove/replace piece of plastic by the passenger side sail window, and this piece on both sides doesn't match up well to the pillars.
