Emergency parking brake noise and light on the dash

What is your question?

The emergency brake pedal is not engaged I keep pulling the lever nothing happens parking brake failure keeps illuminating and making beeping noise every 2 to 3 minutes while I'm driving the car it's driving me insane

How long has your 2001 Mercedes-Benz E320 had this problem?

I pushed the emergency brake pedal down roll back up to his position in every sense message to displays parking brake engage even though it isn't and keep making beeping noises while I'm driving