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Guide to replacing the thermostat of the Mercedes Class B

Model: Mercedes Classe B W245, MK 1 - Years 2005-2011
Part: Thermostat

Today we will see the main instructions on how to disassemble and replace the engine cooling circuit thermostat of the Mercedes Class B. First, let's open the car's hood and start disconnecting the air intake hose, then disconnect the EGR valve tube; unscrew the fastening screws of the latter to remove it, thus gaining access to the thermostat, as shown in the video. At this point, disconnect the coolant pipes from the thermostat, unscrewing its screws to remove it; replace it with the new one and reassemble all the other components.

Posted on 10 January 2026 by ScegliAuto

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