4WAS working continuously?

[KarolGT]

Hi

I was searching on this forum but usually 4was problems are related to the lights and other error codes, in my case it is different:

I was driving on the highway today and suddenly I felt like the wind was very strong from one side. But that was not the wind. Car started shaking, I thought I do not have air in tire or something happended to one of the tire. I stopped, checked everything, slowly I back to mechanics, we checked tires, suspension, but we did not find anything. Also no error codes, on dashboard and also when I checked with CarScanner.

Then I recognized that running below 35 km/h car is ok, but exactly at 35/h I feel another "hit" and above 35 km/h car is shaking. So I removed the 4WAS fuse (under the hood, number 37 as I remember)

Of course now I have 5 or 6 lights on dashboard but car is running fine even above 35 km/h.

What may be the issue? Any sensor? Looks like car thinks is turning left or right all the time?

[KarolGT]

Today I did few tests:

1) I put the 4WAS fuse back, then I disconnected they YAW sensor - still the same rear wheels behaviour, then I connected YAW sensor back
2) I disconnected battery for few minutes, still nothing changed
3) I removed the 4WAS sensor fuse (driver fuse box) - without this fuse the car is also running fine.
because in point 3 the ABS is not working, for now I removed the 4WAS motor fuse.
I do not have any other idea I can test.
I'm waiting for my colleague to connect Consult 3

[KarolGT]

I'm updating this thread, maybe finally someone will have any idea

Today I connected Cosult 3.
No error codes in Engine, ABS, 4WAS, nothing (except that I removed 1 fuse)

all ABS sensors are showing the speed properly
steering wheel angle sensor - also working properly

I did 4WAS test - running correctly (moving wheels on Parking)
but suddenly at 35 km/h 4WAS motor is receiving power lefr-right and car is shaking.

any idea what else I can check? calibrate 4was?

[Are_Gee_r88]

Hello. Did you ever figure out what was goin on?