Mercedes-Benz AMG C43 2002–2025 — technical service bulletin

Bulletin LI54.71-P-078498 · NHTSA communication 11009036 · issued Oct 16, 2024

Technical service bulletin

communication type

Electrical System

component

2002–2025

model years

vehicle entries

Official summary

Complaint "Active Emergency Stop Assist Currently Unavailable" and "Active Steering Assist Inoperative" instrument cluster messages along with Tire Pressure Light on in Instrument Cluster. Cause Both systems are temporarily unavailable due to low tire pressures. An active tire pressure monitor light may result in some assistance features being temporarily unavailable until tire pressures are corrected. Remedy Check/adjust tire pressures and reset monitoring through the instrument cluster.

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.