Transmission Control Module

In December I was having issues and had the Transmission Control Module replaced on my 2014 Fiesta SE under a service bulletin. Since then, I have been experiencing battery drain. I thought it was just an old battery and replaced it. but the last couple days the battery has been dead and needed a jump. The battery is only three months old. Has anyone else had the same issues after having the TCM replaced?

Have you check your alternator?

Yes. I had the alternator checked and it tested fine.

I would contact the dealer and have them recheck the wiring.

Turns out there were two loose fuses. We'll see if that solves the problem.

Parasitic Drain

Parasitic drain is due to components in your vehicle continuing to run after the key is turned off.
Some parasitic drain is normal – your battery delivers enough energy to keep things, like your clock, radio presets, and security alarm operational at all times.
However, if there's an electrical problem – such as faulty wiring, poor installation, and defective fuses – parasitic drain can exceed what's normal and deplete the battery.