Coolant
Important safety notes
G
WARNING
If antifreeze comes into contact with hot com-
ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you top up
the antifreeze. Make sure that antifreeze is
not spilled next to the filler neck. Thoroughly
clean the antifreeze from components before
starting the engine.
!
Take care not to spill any coolant on painted
surfaces. You could otherwise damage the
paintwork.
When handling, storing and disposing of coolant
and antifreeze, please observe the relevant reg-
ulations and the important safety notes for ser-
vice products (Y page 379).
Coolant additive with corrosion and
antifreeze protection
The coolant is a mixture of water and antifreeze
and corrosion inhibitor. It performs the following
tasks:
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corrosion protection
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antifreeze protection
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raising the boiling point
When the vehicle is first delivered, it is filled with
a coolant mixture that ensures adequate anti-
freeze and corrosion protection. Coolant must
remain in the engine cooling system all year
round to ensure corrosion protection and a
higher boiling point – even in countries with high
outside temperatures.
Mercedes-Benz recommends an antifreeze and
corrosion inhibitor that meets the requirements
in the Mercedes-Benz Specifications for Service
Products Sheet Number 325.5.
Information about antifreeze and corrosion
inhibitors approved by Mercedes-Benz is avail-
able:
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from any Mercedes Benz Service Centre
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on the Internet at
http://bevo.mercedes-benz.com under the
specifications on Sheet No. 325.5
Check the corrosion inhibitor/antifreeze con-
centration in the coolant every six months.
The percentage of antifreeze and corrosion
inhibitor in the engine cooling system should:
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be at least 50%. This way, the engine cooling
system is protected against freezing down to
approximately -37 †.
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not exceed 55% (antifreeze protection down
to -45 †). Otherwise, heat will not be dissi-
pated as effectively.
If there has been coolant loss, do not refill only
with water. If the vehicle has lost coolant, top up
with equal parts water and antifreeze and cor-
rosion inhibitor. The water used as part of the
coolant mixture must fulfil certain require-
ments; these are usually fulfilled by drinking
water. If the water quality is not sufficient, you
must treat the water.
Further information may be obtained at any
qualified specialist workshop.
Maintenance interval
Have the coolant replaced at specified intervals
by a qualified specialist workshop.
Capacities
Engine cooling system
Vehicles Coolant
All models Approx. 10.4 l
Approx. 13.4 l
on vehicles with aux-
iliary heating
Washer fluid
Important safety notes
G
WARNING
If windscreen washer concentrate comes into
contact with hot components of the engine or
the exhaust system, it can ignite. There is a
risk of fire and injury.
Make sure the windscreen washer concen-
trate does not come into contact with the filler
neck.
386
Service products and capacities
Technical data
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