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424 Technical data
Have the brake fluid renewed at the
#
specified intervals.
Have the brake fluid regularly replaced at a quali-
fied specialist workshop.
Only use a brake fluid approved by Mercedes-
Benz according to MB-Freigabe or MB-Approval
331.0.
Coolant
▌Notes on coolant
Observe the notes on operating fluids
(
page 417).
/
& WARNING Risk of fire‑ and injury from
antifreeze
If antifreeze comes into contact with hot com-
ponent parts in the engine compartment, it
may ignite.
Allow the engine to cool down before
#
you top up the antifreeze.
Make sure that no antifreeze spills out
#
next to the filler opening.
Thoroughly clean the antifreeze from
#
component parts before starting the
vehicle.
* NOTE Damage caused by incorrect cool-
ant
Only use coolant that has been premixed
#
with the required antifreeze protection.
Information on coolant is available at the fol-
lowing locations:
In the Mercedes-Benz Specification for
R
Operating Fluids 320.1
At https://operatingfluids.mercedes-
-
benz.com
At a qualified specialist workshop
R
* NOTE Overheating at high outside temper-
atures
If an inappropriate coolant is used, the cooling
system is not sufficiently protected against
overheating and corrosion at high outside
temperatures.
Only use coolant approved for
#
Mercedes-Benz.
Observe the instructions in the
#
Mercedes-Benz Specifications for Oper-
ating Fluids 320.1.
Have the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the cool-
ing system:
A minimum of 50% (antifreeze protection down
R
to about -37°C)
A maximum of 55% (antifreeze protection
R
down to -45°C)
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