It means the security system is armed.
That is normal operation.
Not enough information regarding why the car won't start but as to he security light; it's always blinking when the engine is off.
The blinking red light in the dashboard is an indicator that your anti-theft security system is armed and working.
Security system deterrent.
To let you know the system is armed.
Possibly a security system activation light.
Yes, the blinking securtity light will blink when the car is off.
That light indicates the security system is working properly.
blinking red light
This is the light for your security system. Shows that it is working.
It sounds like an anti-theft indicator light. The blinking light means that the security system is active and is functioning properly.
change the blue box maybe.