Astra J flickering indicator on dash- maybe someone know what is it

Hi need help

I have on dash this indicator and its filkering after ignition on and egine running
in car diagnostic zero errors
Anyone have idea what is it?
thx for any help

The light is on - the electric parking brake works less well. The light is flashing - the brake is in service mode. Engage and disengage the brake, then drive to a workshop to have the fault rectified.

The light is on - the electric parking brake works less well. The light is flashing - the brake is in service mode. Engage and disengage the brake, then drive to a workshop to have the fault rectified.

i try with diag tool leave in service mode and no luck, sound that all working but still flashing and no fault

What equipment do you use to check for errors? Sometimes, when you use a weak OBD cube, it will not detect all errors.