Try it in the morning after it's been sitting for the night. One of the issues appeared to be that the RFHUB would go into power save (sleep) and wouldn't wake fully when the first command is sent. I have recorded this with my truck using the surveillance cameras in my shop. I send the command...the dash wakes up, but the truck never starts, locks, etc. Once the dash is awake (usually 8 seconds), I can close the app immediately, restart the app and resend the command and it'll work within 7-30 seconds. That's pretty consistent for me and what others have reported here on the big uConnect thread.
You can read about it here:
I am having the same issue with the remote commands from both the mopar web site and the uconnect app not working after the vehicle is off for 30 minutes or so. I called uconnect a few days ago and they said that this is a known software issue that they are working to resolve. There is no ETA...
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