I am stumped. I have a 2013 CX5. Has shown no signs of isses, and yesterday when coming home my check engine light came on. When I parked there was an agressive clicking and buzzing sound after the car was turned off that went on for a few minutes. I was able to turn it on again. Later that night, I couldnt. There was still a buzzing sound. My key fob will not register inside the cabin or to lock or unlock doors. (The car itself wont let me lock the doors if the battery is hooked up.) I messed with a bunch. Left it sitting overnight with no battery. In the morning, I hooked it back up. Registered the keys and started. Ran it. No issues. It started buzzing again. Now the keys wont register again, and the security's light is still flashing. The push start is amber flashing. I am stumped.
I changed the battery. Changed the key fob batteries. Checked fuses.
Attached video for sound its making
I changed the battery. Changed the key fob batteries. Checked fuses.
Attached video for sound its making