After sitting in sub-zero weather for a few days, I needed to jump my 2014 Outback to get it started. Hooked up the cables, turned the key, and then the horn started blasting. Disconnected the cables and eventually realized I had hooked them up backwards. Now I’m beating myself up pretty hard here and honestly I’m worried about my cognitive state having done something like that-- I’m not a mechanic or anything but I’ve certainly jump started a car before and understand enough about electricity to not make a mistake like that.
Anyway I corrected the cables and it started up. But as one might expect some stuff is not working. It can drive and all the exterior lights, wipers, etc seem to be working, so at least it’s functional. The following are not working (and it’s possible there might be something else I haven’t noticed yet):
Interior overhead lights
Dash clock/mpg display
Remote door lock/unlock
So, while I may or may not be able to fix this myself, I’d like to do what I can to diagnose the problem. I’ve checked all the fuses (got a reading with an ohmmeter, didn’t pull them all out). I recognize it’s possible that I’ve fried all these components, but I’m hoping that’s not the case and there’s a single point of failure, like a fried fusible link.
For those of you who might have some familiarity, where would you start looking?