A2 TDi scary steering / differential issue....

ah yes, steering angle sensor also.. Been reading about it (didn't know where it was though!) I've never had the wheel alignment done so a failing sensor could be a possibility.
 
Been following this thread and was just looking to see if there was a conclusion.
I’ve applied a bit of logical thought, sometimes I’m wrong and sometimes I’m spot on. I have no expertise at all in this area.
Seems to me that your ABS is checking the wrong wheel therefore inducing a slide rather than correcting one. To do that it must think the wheel it is checking is rotating disproportionately quickly compared to the other. Logical conclusion; it doesn’t know where your steering wheel is.
Now for the bonkers. Choose a cold morning, wrap up warm, switch the heating off, wind all the windows down and drive. If the problem persists longer my money is on the slipper ring. Not sure how you prove it though. If it doesn’t know it’s wrong will it log a fault? Do you have VCS on your PC?
Edit, missed a bit. I’m thinking your sensor is not detecting the full angle of turn until it is fully warmed up. Therefore the ABS thinks it’s more straight ahead than it actually is.
 
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Been following this thread and was just looking to see if there was a conclusion.
I’ve applied a bit of logical thought, sometimes I’m wrong and sometimes I’m spot on. I have no expertise at all in this area.
Seems to me that your ABS is checking the wrong wheel therefore inducing a slide rather than correcting one. To do that it must think the wheel it is checking is rotating disproportionately quickly compared to the other. Logical conclusion; it doesn’t know where your steering wheel is.
Now for the bonkers. Choose a cold morning, wrap up warm, switch the heating off, wind all the windows down and drive. If the problem persists longer my money is on the slipper ring. Not sure how you prove it though. If it doesn’t know it’s wrong will it log a fault? Do you have VCS on your PC?
Edit, missed a bit. I’m thinking your sensor is not detecting the full angle of turn until it is fully warmed up. Therefore the ABS thinks it’s more straight ahead than it actually is.
Once I've got a few other niggles sorted I'll get back to this one, got some alloys with good tyres on the way from A2Steve, then I'll get wheel alignment done, just because its never been done in almost 200K miles, and to rule it out as a cause. Have no VCS, although a couple colleagues at work were thinking of chipping in for the diagnostic stuff. Just have a basic code reader at the mo
 
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