immobilizer fault Nissan 3

https://veloriftlabs.com/s/m5ej4G_OME2w5AVrDmwX9

I had a sudden immobilizer fault on my Nissan while leaving the grocery store. The car wouldn't start and the security light flashed non-stop. After some research, I found it's often the key fob battery dying or a glitch in the transponder. A quick reset by locking and unlocking the driver door manually did the trick. It's smart to keep the backup physical key handy, just in case.