OK, if this calibration trick did not help you, then indeed there is something else to look at.

Could be simply one of the wheel speed sensors, which started taking water ingress. They are not too expensive to repair. The procedure has been explained on this forum.

Electronic modules do not tend to go wrong without a clear physical cause. So look for something mechanical that got damaged (wheel speed sensor, damaged wiring, etc.)

Of course, the ABS pump or one of the ABS/TC valves could be the culprit. The workshop diagnostic analyzer (CANBUS, OBD2.) should have fault error codes stored, which may point in the right direction.

I understand the concept. That's actually the first thing
I tried even before new battery. I tried multiple times. No effect ! :/

No obd errors. And all sensors are good.

No sensor at fault is a nasty one!

Did you try a reset by leaving off the battery for a 1/2 hour?

Over a completely different track: have the brakes recently been serviced? Is it possible that one of the brakes does not work, despite all sensors and actuators working?

Would replenishing the braking system help?

I'm on the guessing track now.

I did the battery reset and the brakes were not serviced lately.