Also be aware of the variations over time in the Lionchief architecture and boards. Early Lionchief was RF only- a proprietary signal that is NOT bluetooth. Those engines typically also did not have the "not connected to remote" sound chirp if the engine is powered but the engine isn't talking to a remote, and thus you get prime mover sounds at idle and not the chirp. Later engines added this just to help users diagnose when the remote was connected or not. Again, Lionchief as a starter engine has never had conventional operation, and thus always required a remote to run.
And again, both the engine and the remotes typically have a timeout feature in case a child was running, then walked away, and either left the remote on or the engine on, but not moving. The remote tries to save the batteries but the engine also can time out after a certain period. Power cycling both (turn off for a bit, then turn on) resets both sides of the system and they should reconnect.
