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Replacing the Thermostat of the Mercedes A-Class CDI

Model: Mercedes Classe A W169 - Years 2004-2012
Part: Thermostat

Today's instructions will show you how to remove and replace the thermostat of the Mercedes A-Class CDI. First, open the hood of the vehicle and start unscrewing the screws securing the air filter box to remove it; then disconnect the intake hose and remove the filter box, as shown in the video. At this point, disconnect the thermostat hose and unscrew the mounting screws to remove it and replace it with the new one, as well as the original, reassembling everything and pouring in the new coolant!

Updated on 10 September 2026 by ScegliAuto

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