Mercedes-Benz CLS Operator's Manual page 373

370 Technical data
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)
Notes on windscreen washer fluid
Observe the notes on operating fluids
( page 362).
/
& WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Windscreen washer concentrate is highly flam-
mable. It could ignite if it comes into contact
with hot engine component parts or the
exhaust system.
Make sure that no windscreen washer
#
concentrate spills out next to the filler
opening.
* NOTE Damage to the exterior lighting due
to unsuitable windscreen washer fluid
Unsuitable windscreen washer fluids may
damage the plastic surface of the exterior
lighting.
Only use windscreen washer fluids which
#
are also suitable for use on plastic surfa-
ces, e.g. MB SummerFit or MB WinterFit.