Mercedes CLS55 AMG W219, New Coolant Expansion Reservoir

Also took the liberty to replace the old coolant expansion reservoir/tank with a fresh new one. The new reservoir was including a new coolant cap and coolant level sensor.

I have no idea when it was last replaced. Also it was leaking from the cap, even though I tried a new cap (see my previous post: https://www.ducked.nl/mercedes-cls55-amg-w219/mercedes-cls55-amg-w219-new-coolant-expansion-reservoir-cap-oil-filler-cap/ )