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How to Top Up the Coolant in a Mercedes B-Class

Model: Mercedes Classe B MK 1, W245 - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011
Part: Checks and maintenance

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Video tutorial

Before starting, open the bonnet of your Mercedes B-Class. The correct coolant level should be between the "MIN" and "MAX" lines.

Begin by unscrewing and removing the cap from the expansion tank. Next, insert a funnel into the opening and start pouring the coolant into the expansion tank.

Continue pouring until the level is near the "MAX" line. Once you reach the "MAX" level, remove the funnel and screw the cap back on, and the coolant top-up for your Mercedes B-Class will be complete.


Updated on 25 April 2026 by ScegliAuto


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by ScegliAuto

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