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Operation
Engine compartment
̈ Using a rag, turn cap 1 slowly approx-
imately one half turn counterclockwise
to release any excess pressure.
̈ Continue turning the cap counterclock-
wise and remove it.
The coolant level is correct if the level
ț for cold coolant: reaches the white
marking (plastic bridge) inside the cool-
ant expansion tank
ț for warm coolant: is approximately
0.6 in (1.5 cm) higher
̈ Add coolant as required.
̈ Replace and tighten cap 1.
For more information on coolant, see the
“Technical data” section (
୴ page 730).
Windshield washer system and
headlamp cleaning system
The washer fluid reservoir is located on the
left-hand side of the engine compartment
when looking in the direction of travel. It
supplies the windshield washer system
and headlamp cleaning system with wash-
er fluid.
Example illustration S 550 with Airmatic
1 Cap
Vehicles with ABC*
1 Cap
Fluid for the windshield washer system and
the headlamp cleaning system is supplied
from the windshield washer reservoir. It
has a capacity of approximately 6.87 US qt
(6.5 l).
During all seasons, add MB Windshield
Washer Concentrate “MB SummerFit” to
water. Premix the windshield washer fluid
in a suitable container.