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How to Reset the Check Engine Light on the Mercedes C-Class?

Model: Mercedes Classe C W204 - Years: 2007, 2008, 2009, 2010, 2011, 2012, 2013
Part: Warning light – error code

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Video tutorial

When the check engine light appears on the Mercedes C-Class instrument cluster, it indicates a generic issue with the vehicle's injection system. You can identify the problem by performing a diagnosis with a suitable scanner.

Connect a diagnostic tool to the vehicle's OBD port, located at the lower left of the steering column. Once the scanner is connected, you can determine the cause of the issue and resolve it. This will allow the check engine light to disappear from the instrument cluster.


Updated on 12 October 2026 by ScegliAuto


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How to Replace the Glow Plugs in the Fiat Ducato 2.3 Multijet?

Glow plugs, as the name suggests, raise the temperature of the engine in diesel vehicles to allow for easier starting. The manufacturer, in this case, Fiat for the Ducato 2.3 Multijet, specifies how often they should be replaced, and a warning light will illuminate when it's time. This work is carried out under the bonnet. First, remove the upper engine cover, then lift the coil and, using a socket wrench of the appropriate size, unscrew the glow plug to remove it from the base, followed by installing the new one.

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