Hey, I have a 09 G37x sedan and it died on me. I got in, pressed in the break pedal and went to go start it and nothing happened. The intelligent key system warning light came on my dash which has never happened before and I also got my inspection done today. As I kept trying to start the car the break pedal got stiffer as well. The engine didn’t turn over, my key/car batteries were both in good working condition and I have the car 95% stock. I think it has something to do with my ignition but i’m honestly lost on what this could be. Has anyone had this issue before or does anyone have some advice to diagnose what’s wrong? Thanks for your time.

 

Have you tried boosting it? Battery cables connected tight?

 

I originally tried jumping it and that didn’t solve it. I ended up replacing the battery in both the key and the car and it fixed the issue. It could’ve also been that the ecu needed to be reset.