S80l polten front left. But the friendly finds nothing ??

Moin, a well-known problem with the S80I It is poltert on the front axle. Stabi, coupling rod already renewed. This morning I drive from the yard, hit the steering wheel in and “KWAAANNNNNn” bangs it in the axle. (Certainly extreme and unique. Otherwise it is only a poltern) Animally scared off to the Who can find nothing and Murphys Law prevented the demonstration of the noise. What else can that be? So they already believed me and it also for later complaints noted in the file. It’s crazy. It’s always on the front left. And sometimes the moose drags in the same direction. Sometimes, after bumps, it appears on the road, sometimes while steering, sometimes during a slight bend ride on the flat road and sometimes when the axle is relieved. (ground wave or similar). Very irregular and hard to reproduce Greeting Andre S80I T6 130tkm EZ Dec. 2002