Steering Dash Message and Code issues
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Joined: Nov 2025
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From: New York
Steering Dash Message and Code issues
Have a 2021 Turbo with 11k miles (purchased a few months ago), overall great car with no issues. Recently replaced the original battery (it was time), fully charged it, and used iCarSoft to register the new battery. I now have the "Steering Support Limited" dash message, with iCarSoft listing 3 faults:
C10AD29 - power steering control unit faulty
B2000049 - power steering control unit faulty
C10ACF0 - steering end stops not learned
Have tried the steering wheel spin side to side with many variations, but no change.
Car still drives/steers fine, so lots of reading about potential rack replacement (or control board fix), but thinking it would be worth trying to clear the codes first.
iCarSoft sensor/teach calibration does not clear the codes.
C10AD29 - power steering control unit faulty
B2000049 - power steering control unit faulty
C10ACF0 - steering end stops not learned
Have tried the steering wheel spin side to side with many variations, but no change.
Car still drives/steers fine, so lots of reading about potential rack replacement (or control board fix), but thinking it would be worth trying to clear the codes first.
iCarSoft sensor/teach calibration does not clear the codes.
- Would PIWIS clear the codes?
- Is there a separate way to test the rack module?
Last edited by kredmore1; Nov 25, 2025 at 05:57 PM.
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Joined: Nov 2025
Posts: 13
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From: New York
Yes, I will try that later today, easy enough, and sometimes power disconnect can help clear some codes, so we'll see, thank you.
Last edited by kredmore1; Nov 25, 2025 at 02:41 PM.
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Have a 2021 Turbo with 11k miles (purchased a few months ago), overall great car with no issues. Recently replaced the original battery (it was time), and using iCarSoft, registered the new battery. I now have the "Steering Support Limited" dash message, with iCarSoft listing 3 faults:
C10AD29 - power steering control unit faulty
B2000049 - power steering control unit faulty
C10ACF0 - steering end stops not learned
Have tried the steering wheel spin side to side with many variations, but no change.
Car still drives/steers fine, so lots of reading about potential rack replacement (or control board fix), but thinking it would be worth trying to clear the codes first.
iCarSoft sensor/teach calibration does not clear the codes.
C10AD29 - power steering control unit faulty
B2000049 - power steering control unit faulty
C10ACF0 - steering end stops not learned
Have tried the steering wheel spin side to side with many variations, but no change.
Car still drives/steers fine, so lots of reading about potential rack replacement (or control board fix), but thinking it would be worth trying to clear the codes first.
iCarSoft sensor/teach calibration does not clear the codes.
- Would PIWIS clear the codes?
- Is there a separate way to test the rack module?
Thread Starter
AutoX
Joined: Nov 2025
Posts: 13
Likes: 1
From: New York
Also make sure you battery is fully charged and go on a drive... sometime the steering message is due to low battery because they are electric power steering and need to see a certain voltage holding well. It worth it eliminateing that detail since it simple, then searching for the next if that is not the issue.
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From: New York
@kredmore1 Did disconnecting the battery clear the error codes?
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More....I also tried a friend's PIWIS II, but the software is too old for Macan. I noticed in the iCarSoft too that it says the steering wheel teaching/learning/calibration can only happen once all other steering codes are clear, so that is why the iCarSoft steering teaching/learning/calibration doesn't work (with the other steering module faults), so could also be why the wheel turning attempts don't work either. The question is starting to become if there is a real steering module issue or it's just codes that need to be cleared for the module. So, thinking a newer PIWIS/dealer at this point to clear the codes (or another scanner tool). Any other suggestions are welcome.
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