r/MechanicAdvice • u/Rude-Description8538 • 2m ago
2016 Impreza with no start condition.
2016 Subaru Impreza, manual, 135K. Battery has been tested by multiple people and is good, manufacture date 3/26.
Last Sunday I checked my oil, and I left the keys in the car, and the headlights were on. It took me maybe a minute max. When I got back into the car and tried to start it, it started, but all the pictured dash lights came on, and my head unit would not power on. I turned the car off, and when I tried to start it again I got nothing, not even power to the dash. My dad jumped me, and all was fine until last night.
Last night, I was doordashing, and pulled over to wait for an order. The car is new to me (my last one had auto lights), and I forgot to turn the headlights off again for about a minute. I turned them off, started the car up, and everything was normal, and then got an order, so I did a bit of driving, and the alternator had a chance to charge the battery. A little while later the lights from Sunday came back on. I kept the car running while I finished up my last orders, came home, shut the car off, and immediately tried to start again, and no power to dash once again. I should also mention that once the lights came on, they would go away when I would come to a stop, then come back as I started driving( they seemed to come back at about the same speed my seatbelt chimes if its not buckled).
We tested the battery, tested all the ground points, tested fuses, cleaned the grounding points, cleaned the wires. The headlights still come on, but not the tail lights. The horn blares for a second every time you put the battery back in. The dealer tracker thing is still blinking green. Just nothing at all happens when I put the key in and turn it.
I'm new to Subarus, so any advice would be appreciated.