Hi, I’m new here.
I’ve got a 2011 CT and only had it a year and a half. Today I’ve had to change the battery for the 4th time. Obviously something his draining the battery but what can it be?
Please help!
Thanks

 

My friend used this method to find the battery drain in his car. https://www.wikihow.com/Find-a-Parasitic-Battery-Drain

 

Any mods to the car? First thing is ask yourself if there's any mods. Also any damage or prior repairs (say from an accident or a mouse).

Then as said, you'd have a mechanic perorm a parasitic draw test where they'll pull fuses one by one and see what the static draw is on the 12v system