Ok so this morning, started up my 05 350z just fine, sounded a lil slow to start but I figured it’d been a day or two since I turned it on. Drive to the store, went in for 5 mins, came out, went to start my car, and nothing. I have power, so it’s not the battery. Starter doesn’t even turn over. I hear kind of a sloshing liquid sound too? All around confusing. Is it even possible for the starter to just suddenly die with such little to no warning? Is there something else I’m missing? Obd doesn’t read any codes.

 

Welcome and moved your thread to a more appropriate forum. You should start by doing some basic troubleshooting, such as checking voltage from battery to starter. Check the condition of wiring and grounds when suffering a sudden loss of power.

 

It's a battery issue. Either operating at half-capacity and/or bad ground at fender ground. 75% probability. Take it to Pep Boys or similar for a battery/charging sys check. Not worth second guessing.