2011 G37 coupe won't start this morning. Help!
 

Last week when I started my car, I noticed it was being a little sluggish, so I had the battery replaced. Everything has been great until this morning. I get in my car, and everything seems to be functioning, but I hear a faint alarm. When I press the brake + push button, the engine doesn't even attempt to turn over, and everything power-wise shuts off. Even the windows don't seem to roll down and up when opening/closing the door.

I exited the car, and went inside for a few minutes, and when I came back out to my car, everything above repeated itself. All the electronics were working up until the point where I pressed the button, then everything shut off.

Any suggestions on what to do? Or what could cause this? Thanks.

Check alternator

Get a jump, then use a voltmeter and see what you are getting at the battery. Should be around 14 volts, if not ... alternator is bad.

Either your battery isn't getting charged, or it's getting drained when it's off. Either alternator, or do you have any electrical accessories installed that could be draining power?

I would also check your fuse link also, it is attached to the positive cable next to your battery. When your car won't start, try to wiggle the fuse link around a little bit. If it does start, you might have a loose or bad Fuse link.