Airbag light flashing. Haven't see this issue before

Wfbont007

My airbag light started flashing 6 days ago. I tried the reset several times. I changed the flashing light to 1 long flash and 2 quick flashes. I was never able to get the light to shut off.

Went to the dealer this morning and showed the service manager. About two hours later, I was told that the light was fixed and my car was ready for pick up.

When I went to leave the dealer, the light was flashing very slowly. 3 seconds on, 2 seconds off

I showed the service manager and the master tech looked at it. The dealership cant find a problem and the car is going back next week.

I installed a new battery today because the one in the car was bad. I was hoping that this would fix the problem. After the new battery installation, my airbag light was still flashing.

Took it to my private mechanic. He used Snap-On Solus Edge scanner and it showed No Codes. He reset all codes even though there were none showing.

2020 370z NISMO with 19,000 miles. Nothing new installed that would affect the airbag light