glocklt4

2013 MKZ Hybrid here and I think the battery has just started to fail. Car wouldn't turn on and the center display said something like "disabling systems to save power". I hooked up 10amp 12v source and car turned right on immediately. Ran a 2amp trickle charge on it for 2 days and charger said it never got above 80%. Went to try and turn it on after disconnecting and nothing works at all. 7 years out of a car battery is pretty darn good. New battery at $130-160 is pretty pricey though! Trying one last trickle charge of the battery while i have it out of the vehicle now with no draw, but pretty sure it's toast anyway. I just did a bunch of work trying to seal the truck area of the car recently after finding some water leaks when raining, so I was suspicious at first that I caused a problem, but I think just a coincidence.

As posted in the other forum, wife's car needs a new transmission. Probably the bearing issue posted there. Go there for more details.

I posted to your other thread on the blue oval forum, but checking back here as well to see if you got this fixed an have details on what the problem was: https://www.blueovalforums.com/forums/index.php?/topic/65213-strange-engine-whining-noise/