The SAS is your Steering Angle Sensor. This sensor has little wire brushes that rotate around a resistive circle to report an angle via CAN data. You can VERY easily look at the data for this module and use the steering wheel to turn back and forth to verify logical data.

If you have INPA, you can very easily use this tool and look at the SAS module.

Unfortunately this sensor is a wear-item. It is actually not too hard to change as you just need to lay on your back while under the driver's foot-well.

If you need help with this, create a new thread and I can easily walk you through it using INPA.

When SAS starts to.fail you can usually recalibrate by turning the steering wheel full left to full right a couple times. Clear codes and hope for the best. My car had an SAS trifecta 2-3x in the past couple years.

I plan to get the eBay repair kit vs replacement as they are stupid expensive.

I think I only paid like $300 for a new SAS sensor. I would be interested in learning how to repair the brushes on my old one...but didn't find a reliable source online for this.

eBay $85

Is that just for the brushes? If that's the case, $85 for the tiny little brushes is a freakn RIP.

I just checked for a new SAS they're going for around $200 on ebay. They seem to be more plentiful for a new genuine at a better price than when I picked mine up.

It’s pricy but has a bonus of no Re-code. It’s actually a 3D printed replacement brush sweeping assembly and a kit including proper grease. Go look at the kit.

$200 for new oem? I would not consider non oem.

This is the price for original part in Europe.

https://www.bmwautoparts.net/en/sear...ry=32306793632

Looks OEM to me!

There's no recoding necessary for the SAS. Only calibration is needed--which is simple.

https://www.ebay.com/itm/BMW-E38-740...8AAOSwW-heGfvk