Other generations: Mk4 (W205) 2014-2023 · Mk5 (W206) 2021-Present · Mk3 (W204) 2007-2014
The third-generation Mercedes C-Class (W204, 2007-2014) – saloon, estate and coupe – keeps its owner resets in the instrument cluster and the steering-wheel buttons. The ASSYST PLUS menu resets the service reminder, and the same call+OK entry opens the hidden diagnostics display; the windows and sunroof re-learn their travel after a battery disconnection. This section covers the resets and initialisations a W204 owner can do without a dealer – service reset, window and sunroof normalisation, tyre-pressure reset, a safe 12V battery disconnect and the smart-key battery – each verified against Mercedes service data and the owner handbook.