engine coolant MERCEDES-BENZ CLS COUPE 2018 Owners Manual

1
Speedom eter →
253
2 ÷ ESP®
→
525
3 #! Turn signal light →
124
4 Ð Powe r-assis tedsteering malfunctioning →
534
5 Multifunction display →
257
6 ! ABS malfunction →
525
7 ; Engine diagnostics →
536
8 Rev counter →
253
9 % Diesel engine: preglow
A ! Electric parking brake applied (red) →
525
B J Brakes (red) →
525
C # Electrical fault →
536
D L Distance warning →
532
E ? Coolant too hot/cold →
536
F Coolant temp erature display →
253
G J Brakes (yellow) →
525 H
! Electric pa rking brake (yellow) →
525
I 6 Restra int sy stem →
33
J ü Seat belt not fastened →
531
K ï Trailer hit chis not operational or is swivel‐
ling →
534
L T Side lamps →
12 2
M Fuel le vel display
8 Fuelreser vewith fuel filler flap location
indicator →
536
N K High beam →
124
O L Low beam →
12 2
P R Rear fog light →
12 3
Q AIR BODY CONTROL/DYNAMIC BODY CONTROL
malfunctioning →
532
R h Tyre pressure monitor →
539
S å ESP®
OFF →
525 At
aglance – Warning and indicator lamps 11

1
Speedom eter →
253
2 AIR BODY CONTROL/DYNAMIC BODY CONTROL
malfunctioning →
532
3 #! Turn signal light →
124
4 Multifunction display →
257
5 Rev counter →
253
6 å ESP®
OFF →
525
÷ ESP®
→
525
7 K High beam →
124
L Low beam →
12 2
T Side la mps →
12 2
8 ? Coolant too hot/cold →
536
9 Coolant temp erature display →
253
A L Distance warning →
532
B Ð Powe r-assis tedsteering malfunctioning →
534
C # Electrical fault →
536 D
J Brakes (red) →
525
E ü Seat belt not fastened →
531
F Fuel le vel display
G 8 Fuelreser vewith fuel filler flap location
indicator →
536
H R Rear fog light →
12 3
I 6 Restra int sy stem →
33
J % Diesel engine: preglow
K ; Engine diagnostics →
536
L J Brakes (yellow) →
525
M ! Electric pa rking brake applied (red) →
525
N h Tyre pressure monitor →
539
O ! ABS malfunction →
525
P ! Electric pa rking brake (yellow) →
525
Q ï Trailer hit chis not operational or is swivel‐
ling →
534 At
aglance – Warning and indicator lamps 13

R
Speed limiter (→ page 193)
R Active Dis tance Assi stDISTRONIC
(→ page 196)
* NO
TEEngine dama gedue toexcessively
high engine speeds The engine will be damaged if
you drive with
th e engine in theov errevving range. #
Do not drive wi th the engine in theove r‐
re vving range. The fuel supply is inter
rupted toprotect the
engine when there d mark on there v counter 3
(o ve rrev ving range) is reached.
During no rmal operating conditions, coolant
te mp erature display 4may rise to120 °C. &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. Ve
hicles with a 48 V on-board electrical sys‐
te m (EQ Boo sttech nology) R
POWER 1shows th e electrical drive sup‐
port as a percentage.
R CHARGE 2showsthe electric mo tor's recu‐
peration po wer as a percentage. õ
showsthe drive sy stem's operational read‐
iness . Overview of
the but tons on thest eering
wheel 1
¤ Back/Home button (press and hold),
on-board computer
2 Touch Control, on-board co mputer
3 Control panel for cruise control/limiter or
Ac tive Dis tance Assi stDISTRONIC
4 Control panel for multimedia sy stem:
£ LINGU ATRO NIC or voice control sys‐
tem 254
Instrument Display and on-board computer

#
Turn cap 1anti-clockwise and remo veit. #
Top up the engine oil. #
Replace cap 1and turn it clockwise as far
as it will go. #
Check the oil le vel again (→ page 391). Checking
the coolant le vel &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine,
th era diator and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
below: &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. &
WARNING Risk of scalding from hot
coolant
The engine cooling sy stem is pressurised,
particularly when the engine is warm. If you
open the cap, you could be scalded byhot
coolant spr aying out. #
Let the engine cool down before open‐
ing the cap. #
When opening the cap, wear pr otective
gl ove s and saf etygl asses. #
Open the cap slowly torelease pres‐
sure. #
Park theve hicle on a le vel sur face. Maintenance and care
393

#
Check the coolant temp erature display in the
instrument clus ter.
The coolant temp erature must be below
70 °C. #
Slowly turn cap 1anti-clockwise torelie ve
ov erpressure. #
Continue turning cap 1anti-clockwise and
re mo veit.
The coolant le vel is cor rect:
R ifth e engine is cold, up tomar ker bar 2
R ifth e engine is warm, up to1.5 cm over
mar ker bar 2 #
If necessar y,top up with coolant that has
been appr ovedby Mercedes-Benz.
R Further information on coolant
(→ page 459). To
pping up the windsc reen washer sy stem &
WARNING Danger of bu rns from hot
component parts in the engine compart‐
ment
Cer tain component parts in the engine com‐
partment may be very hot, e.g. the engine,
th era diator and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
below: &
WARNING Danger of bu rns when open‐
ing the bonn et
If yo u open the engine bonn etwhen the
engine has overheated or during a fire inthe
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids. #
Before opening the bonn et, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the engine bonn et
closed and call thefire service. &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact wi thhot engine component parts or
th eex haust sy stem. #
Make sure that no windsc reen washer
concentrate spills out next tothefiller
opening. 394
Maintenance and care

If
th e engine oils lis ted in theta ble are not avail‐
able, you may add a maximum of 1.0 litr e ofthe
fo llowing engine oils once only:
R petrol engines: MB-Freigabe or MB-Appr oval
229. 31orAC EA C3
R diesel engines:
- CLS 300 d: ACEA C3
- allother models: MB-F reigabe or MB-
Appr oval 229. 51orAC EA C3
The following values referto an oil change,
including the oil filter.
Re placement amount Mode
lR eplacement
amount
CLS 300 d6 .8 litres
CLS 350 d9 .0 litres
CLS 350 6.6 litres
CLS 350 4MATIC 6.0 litres Mode
lR eplacement
amount
CLS 450 4MATIC 8.5 litres
All other models 8.0 litres Note
s on brake fluid Obser
vethe no tes on operating fluids
(→ page 452). &
WARNING Risk of an accident due to
va pour poc kets form ing in the brake sys‐
tem
The brake fluid cons tantly absorbs moi sture
from the air. This lo wersthe boiling point of
th e brake fluid. If the boiling point is too lo w,
va pour poc kets may form inthe brake sys‐
te m when the brakes are applied hard.
This impairs the braking ef fect. #
Have the brake fluid rene we d at the
specified inter vals. Ha
ve the brake fluid regularly replaced at a
qu alified specialist workshop.
Only use brake fluid appr ovedby Mercedes-Benz
according toMB-F reigabe or MB-Appr oval 33 1.0.
Yo u can obtain fur ther information on brake fluid
in thefo llowing places:
R inthe Mercedes-Benz Specifications for
Operating Fluids
- at http://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop Coolant
Note
s on coolant
Obser vethe no tes on operating fluids
(→ page 452). &
WARNING Risk offire ‑ and inju ryfrom
antifreeze
If antifreeze comes into contact with hot
component parts in the engine compart‐
ment, it may ignite. Te
ch nical da ta459

#
Allow the engine tocool down before
yo uto p up the antif reeze. #
Make sure that no antifreeze spills out
next tothefiller opening. #
Thoroughly clean the antif reeze from
component parts before starting the
ve hicle. *
NO
TEDama gecaused byincor rect cool‐
ant #
Only add coolant that has been pre‐
mixed with therequ ired antifreeze pro‐
te ction.
Information on coolant is available at thefo l‐
lowing locations:
R inthe Mercedes-Benz Specification for
Operating Fluids 310.1
- at http://be vo.mercedes-benz.com
- inthe Mercedes-Benz BeVo app
R at a qualified specialist workshop *
NO
TEOverheating at high outside tem‐
peratures If an inapp
ropriate coolant is used, the
engine cooling sy stem is not suf ficiently pro‐
te cted against overheating and cor rosion at
high outside temp eratures. #
Alw ays use coolant appr ovedby
Mercedes-Benz. #
Obser vethe instructions in the
Mercedes-Benz Specifications for Oper‐
ating Fluids 310.1. Ha
ve the coolant regularly replaced at a qualified
specialist workshop.
The proportion of cor rosion inhibitor/antifreeze
concentrate in the engine cooling sy stem should
be:
R a minimum of 50% (antifreeze pr otection
down toappr oximately -37 °C)
R a maximum of 55% (antifreeze pr otection
down to-45 °C) Note
s on windscreen washer fluid Obser
vethe no tes on operating fluids
(→ page 452). &
WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Wi ndsc reen washer concentrate is highly
fl ammable. It could ignite if it comes into
con tact wi thhot engine component parts or
th eex haust sy stem. #
Make sure that no windsc reen washer
concentrate spills out next tothefiller
opening. *
NO
TEDama getotheex terior lighting
due tounsuitable windsc reen washer
fl uid Uns
uitable windsc reen washer fluids may
damage the plastic sur face of theex terior
lighting. #
Only use windscreen washer fluids
which are also suitable for use on plas‐ 460
Tech nical da ta

Engine
Display messages
Possible causes/consequences and M
MSolutions
Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* NO
TEEngine dama gedue toinsuf ficient coolant #
Avoid long journe yswith insuf ficient coolant. #
Add coolant (→ page 393).
?
Coolant Stop vehicle
Switch engine off *T
he coolant is too hot. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. &
WARNING Danger of bu rns when opening the bonn et
If yo u open the engine bonn etwhen the engine has overheated or during a fire inthe engine compartment, you
could come into contact wi thhot gases or other escaping operating fluids. #
Before opening the bonn et, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the engine bonn etclosed and call thefire service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
Avoiding significant loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure
th at the coolant temp erature display remains below 120 °C. Displ
aymessa ges and warning/indicator lamps 493

Display messages
Possible causes/consequences and M
MSolutions
? *T
hefan mo tor is defective. #
Avoiding high loads on the engine, drive tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 120 °C.
#
See Owner's Manual *T
he battery is not being charge d.
* NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Stop theve hicle immediately, paying attention toroad and traf fic conditions, and switch off the engine. #
Consult a qualified specialist workshop. 494
Display messages and warning/indicator lamps

8
Fu
elreser vewith fuel filler flap loca‐
tion indicator (→ page 536)
? Coolant
too hot/cold (→ page 536)h
Ty
re pressure monitoring sy stem
(→ page 539) ï
Tr
ailer hit chis not operational or is
swivelling (→ page 534) Saf
ety sy stems Wa
rning/indicator lamp
Possible causes/consequences and M
MSolutions
J Brake sy stem warning lamp
(yellow) The
yellow brake sy stem warning lamp is lit while the engine is running. &
WARNING Risk of an accident due toa brake sy stem malfunction
If th e brake sy stem is malfunctioning, braking characteristics may be impaired. #
Drive on carefull y. #
Have the brake sy stem checked immediately at a qualified specialist workshop. #
Adjust your speed and continue todrive carefull y,leaving a suitable dis tance totheve hicle in front. #
Ifth e multifunction display sho wsa display message, please obse rveth is. #
Consult a qualified specialist workshop. Display messages and
warning/indicator lamps 525