https://www.youtube.com/watch?v=sEIQVpXhJYo

I did what this video shows starting about 2:40 from the start. Used a small wire cutter and with not much strength and gradually pinched the brass bushing at different places. Not intending to cut. Just to deform and make brass bushing loose. Brass bushing eventually got loose and came off.

Some written instructions. https://www.odometergears.com/documentation/Mercedes-Benz_Electronic_Odometer_Repair.pdf