Mercedes-Benz AMG C43 2020–2026 — technical service bulletin

Bulletin LI82.90-P-080159 · NHTSA communication 11029091 · issued Feb 28, 2026

Technical service bulletin

communication type

Steering

component

2020–2026

model years

vehicle entries

Official summary

Complaint Stored DTC C220564 - "There is an internal fault in the steering angle sensor. There is an implausible signal." In the quick test, there are also no other DTC's in other control units that point to or reference N80 Steering Column Control Module ("SCCM"). There is no effect on any other components or vehicle functions and it does not cause an instrument cluster light. Cause The DTC only ever occurs during initialization (initialization occurs after bus sleep). The SCCM then resets itself. Remedy 1. If the error is stored and no other control unit points to the N80 SCCM – ignore and e

Vehicles covered

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.