Red flashing light on dashboard. Car is off and key is out. Light is a silouette of the car with a key symbol.

flashing because theirs a problem and your security is activated --can be problem with key- ignition switch-immobilizer -short -computer etc --check and inspect key first

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A possible dashboard symbol:

https://www.directline.com/car-cover/understanding-car-dashboard-warning-lights

"Brake system light. The first thing to do if you see this symbol glowing on the dashboard is check the handbrake hasn't been left on. ... That could relate to the worn condition of the brake pads or discs, a lack of fluid in the system or a problem with the anti-lock brakes (ABS) or stability control (ESP)."

Make, model and year of automobile.

Color of dashboard symbol or icon, and is it flashing?

what kind of car do u have there are so many cars with red flashing lights with keys ,go on youtube but post your car

Good morning ,
It happened with me one time after i left the long time fixed on the board , and it disappeared without doing any thing ,
don't worry
Regards

What does your manual say, it will inform you as to the symbol and what a flashing or steady light means etc. Also to be on the safe side it would be in your best interest to also include the make and model of your car for a better answer.

If i had a idea what the symbol on the flashing light looked like i might have a better idea as to what it could be .

This symbol is normally the car electronic immobiliser symbol and should not be lit once the car is started.

If it keeps on flashing and the electronic immobiliser is installed properly, it will prevent your car from being started.

Flashing symbols means immobiliser code is invalid or uncoded.
Hope the information is useful.

the red light is telling potential thieves that the car is immobilsed(dead) without the right key.....

That light means that you are setting the tire pressure guage. there is nothing wrong with the van.

This is the security indicator light. Designed to alert potential theives that the alarm is active. It is a L.E.D. lamp, and will not drain the aux battery. Nothing to worry about, this is normal. Hope this helps, and Thanks for choosing FixYa!