I have this issue that i dont know where to look. Sometime when it start my TL it would click click and then the car loose power completely. The only way to get the power back is to disconnect the negative cable. When i disconnect the negative cable i can hear the start disengage
I have replaced the ignition switch fairly recent but the issue rename. The starter have been replaced a year ago or so but i dont recall if this is a new issue or an old issue. I think the issue might be with the rebuild starter

Please help

 

So replace the starter!

 

If you lose all power, you have a power issue. Check your battery cables. You either have a loose connection or a corroded cable. This is assuming you say the car loses all power, you mean all of the car, no lights, no dash, no nothing until you mess with the battery cables.

 

I have battery quick connect /disconnect due to blue tooth battery drain, but i already fixed the battery drained issue. It turned out that the quick connect was loose at a place where it connect

Thanks