Originally Posted by kokketiel
Just saw this now, but the reset procedure for ESP is to turn the steering wheel lock-to-lock with the car running. Not sure that might have fixed your issue, but glad it is sorted out for you. This is necessary if you replace the battery and the warning is given. My research has also shown that there are fragile wheel speed sensors that are easily damaged when doing alignments.
We had to replace our steering angle sensor last year when the car starting showing malfunctions like there was no tomorrow. It even showed coolant error! All was traced to a bad steering angle sensor, and after replacing that, all was well.
Thanks for responding! I also thought it was a broken steering angle sensor. But my MB Carsoft II reader suggested the steering angle was off, and it was WAY off. Car would pull hard to the right. Thinking I just needed the reset, I did the procedure you suggested to no avail.
After the steering wheel was corrected when I had the alignment redone, the light went away. SO my conclusion is that if the alignment was not done properly, and steering wheel NOT straight as an arrow, that WILL cause the warning light to come on an produce code c1170.
However equally as likely it would seem that the steering angle sensor could have busted, but I am glad it did not!