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Replacing the Radiator Expansion Tank

Model: Mercedes Classe M W163 - Years 1997-2005
Part: Antifreeze coolant

If you need to replace the coolant expansion tank, make sure to proceed only after the engine has completely cooled down. Start by draining the coolant through the designated drain plug located under the radiator. Once all the coolant has been drained, proceed to remove the tank located at the rear of the engine bay, centrally positioned, just below the windscreen: essentially, disconnect the various hoses and finally remove the fixing screws of the tank itself.

Updated on 18 February 2026 by ScegliAuto

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