Check the brake fluid reservoir, with some vehicles they share the low fluid light and the e-brake light.
Release the handbrake
Either the switch (on the handbrake) is sticking or you have a short circuit, usually caused by corroded wires or connections.
Either your handbrake switch is broken and will not turn off or you have low brake fluid.
that means your brake fluid is low
turn the light off
No they don't.
Handbrake turn!
You will "flat spot" your tires doing so.
On a Saxo, the handbrake can sometimes come loose and needs to be tightened. To do so, first turn the engine on and place your foot on the brake. Push in the handbrake button and then pull up on the handbrake until tension is felt. Repeat as needed.
Handbrake Turn
The bulb is blown or someone has removed it.
To adjust the handbrake on a Peugeot 107, first, ensure the vehicle is on a level surface and the handbrake is fully engaged. Lift the center console cover to access the handbrake adjustment nut, usually located at the base of the handbrake lever. Use a wrench to turn the nut clockwise to tighten the handbrake or counterclockwise to loosen it, ensuring that the handbrake holds the vehicle securely when engaged. Finally, test the handbrake to confirm it operates effectively before replacing the console cover.