To be honest, I'm not sure what is going on.
We typically have three areas that cause pull, besides damage. Alignment, tyres, suspension wear. Or a combination of two, or all three. You have swapped tyres. Have you tried side to side? Several alignments, with decent readings. Changed some buses, Is everything else tight?
Not totally convinced it is definitely the SAS, as you say your wheel in on centre when driving straight, but agree it needs checking. SAS does need to be absolute zero 'on centre' to prevent oddities in the steering. How it would have lost its calibration is where I have issue.
Your comment... Just trying to eliminate a possible 'physical' error. These EPS systems are very sensitive.
Quote:
Originally Posted by medlyleeds
When driving straight the steering wheel is perfectly centered (where I asked the wheel alignment guy to centre it) but to keep it in this position....
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Is that aligned to the dash, like paddle or stalk positions, or do you mean you have it different to where the alignment guy wanted it centred?