The wire harness, that runs up the right side hinge arm, on the trunk lid, is prone to failure. It is a known issue, going back to 2006, LX.
As the trunk is opened, the wire bundle flexes. Eventually, the wires will break, inside the insulation, and need to be cut and spliced.
On my 06 Charger, this meant no CHMSL and no trunk worky.
Not saying this is your issue, but something to be aware of.
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