Renault Grand Scenic 2 lax front axle

Hello together, I feel slight blows on the steering wheel at my Scenic and hear so a dull “kacker” . This happens however only after approx. 2-3km. It also happens on straight road. Other tires, new brakes and discs did not help. At the TÜV nothing unusual was seen. I jacked up the car and let down the tires on stones once more to hear if the shock absorber , springs makes noises , but nothing is to be heard. before I go to a workshop and start changing one after the other, maybe without a plan, I wanted to ask you for advice? Lg Isi