Notes on coolant level - AH20.00-P-1142-01GZB

The coolant level must, on a cold engine, reach up to the marking (arrow) in the coolant expansion reservoir.

When the coolant is warm the coolant level in the coolant expansion reservoir is about 1 cm above the marking (arrow).

Fig 1: Locating Marking In Coolant Expansion Reservoir (Model 164)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.