Thanks to some posts here on the same subject, I was able to determine the faulty bluetooth module on my 2006 RL was draining the battery if I didn't use the car every few days... Apparently when the module fails it continues to run and drain your battery even with the ignition off...

Here is a post I found that takes you through the steps of finding and disconnecting it.. In my case, rather than remove the module, I just left it in place and disconnected the green plug to it...

https://sparkys-answers.com/2016/06/...ad-parked.html

 

Thanks to your post. i too had to unplug the cables from the module. Good info posted!