Head unit, dash display, AC unit turning on/off

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Hey y’all, have had a 2014 Forester 2.5i for less than 45 days and it has had nothing but problems. Mostly when it rains, is damp, or very cold. Was having problems with head unit. Took SD card out. Seemed to correct head unit issue. Battery died (break lights came on in middle of night and would not turn off) killed battery. Replaced battery. Head unit lights and radio not working upon pick up of car. Head unit displayed (Needs SD card etc.) Put old SD card back in, radio and head unit worked again. Took SD card out. Head unit lights are working intermittently, turning on/off when driving, dash display (controls speed etc) are off in ACC ignition position, AC turning on by itself. Fog lights work when ignition is ON, but not in ACC mode. Possible link to antenna and water seeping in?
 
Go and look for a water leak and correct it. Inspect all the Battery Negative connections to the body and engine ground.
Inspect any and all ground straps.
You will need to access all the faults in all the controllers to have a much clearer "picture" to the events mentioned.
Anything connections that are "green" oxidized must be repaired / cleaned.
 
Go and look for a water leak and correct it. Inspect all the Battery Negative connections to the body and engine ground.
Inspect any and all ground straps.
You will need to access all the faults in all the controllers to have a much clearer "picture" to the events mentioned.
Anything connections that are "green" oxidized must be repaired / cleaned.


Wow, thanks for the reply!! I will have someone I trust do what you’ve suggested and outlined. Thanks so much!!
 

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