Battery keeps draining

[Cejoy15]

2016 legacy...battery replaced but battery still draing. Any ideas?

 

[Stejac]

2016 legacy...battery replaced but battery still draing. Any ideas?

This is a tuff one. There are some good You Tubes on how to find the problem but it gets involved. Good luck. My sons Toyota in the shop several times this month they still haven’t got it. My friends ford at dealer for a while finally traced it to the radio of all things.

 

[Duboisly]

What did you end up finding?
I have a 2016 legacy 2.5 limited with the 4 cylinder. I have the same type of issue. As of 2021 I've replaced 3 batteries and about to put my 4th in. I did a drain check and on Fuse 9 under hood/main fuse box i get 0.6 amp drain then when i pull the fuse it drops to 0.06 amps. This feeds the data communication module / dcm. I haven't troubleshot it more from there.
Also has anyone changed out a DCM, how tough is it? Per the manual it looks like you have to pair the unit to the car, can that be done by a DIY person?