2019 MERCEDES-BENZ S-CLASS CABRIOLET check engine

*
NO
TEEngine dama gecaused byan
incor rect oil filter, incor rect oil or addi‐
tives #
Do not use engine oils or oil filters
which do not cor respond tothe specifi‐
cations explicitly prescribed forthe
service inter vals. #
Do not alter the engine oil or oil filter in
order toachie velonger change inter vals
th an presc ribed. #
Do not use additives. #
Follow the instructions in the service
inter val display rega rding the oil
ch ange. *
NO
TEDama gecaused byadding too
much engine oil To
o much engine oil can damage the engine
or the catalytic con verter. #
Have excess engine oil remo ved at a
qu alified specialist workshop. #
Turn cap 1counter-clockwise and remo ve
it. #
Add engine oil. #
Replace cap 1and turn it clockwise as far
as it will go. #
Check the oil le vel again . Checking coolant le
vel &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain components in the engine compart‐
ment can be very hot, e.g. the engine, the
ra diator and parts of theex haust sy stem. #
Allow the engine tocool down and only
to uch co mponent parts described in the
fo llowing. &
WARNING Risk of scalding from hot
coolant
The engine cooling sy stem is pressurized,
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. Maintenance and care
341

#
Park theve hicle on a le vel sur face. #
Check the coolant temp erature display in the
instrument clus ter.
The coolant temp erature must be below
15 8 °F (70 °C). #
If necessa ry,re mo vethe co ver. #
Slowly turn cap 1counter-clockwise to
re lie ve ove rpressure. #
Continue turning cap 1counter-clockwise
and remo 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 to0.6 in (1.5 cm)
ov er mar ker bar 2. #
If necessar y,add coolant that has been
appr ovedby Mercedes-Benz.
R Further information on coolant:
(→ page 414) Ad
ding washer fluid tothe windshield
wa sher sy stem &
WARNING Risk of bu rns from hot com‐
ponent parts in the engine compartment
Cer tain component parts in the engine com‐
partment can be very hot, e.g. the engine,
th e cooler and parts of theex haust sy stem. #
Let the engine cool down and only
to uch the component parts described
as follo ws. &
WARNING Danger of bu rns when open‐
ing the hood
If yo u open the hood when the engine has
ove rheated or during a fire inthe engine
compartment, you could come into contact
with hot gases or other escaping operating
fl uids. #
Before opening the hood, allow the
engine tocool down. #
Intheeve nt of a fire inthe engine com‐
partment, keep the hood closed and
call thefire service. &
WARNING ‑ Risk of fire and injury from
windshield washer concentrate
Wi ndshield 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 windshield washer
concentrate spills out next tothefiller
opening. 342
Maintenance and care

#
When giving starting assis tance, al ways
make sure that you on lyconnect bat‐
te ry term inals with identical polarity. #
During starting assis tance, you must
obse rveth e described order for con‐
necting and disconnecting the jumper
cables. #
Do not connect or disconnect the bat‐
te ry cla mp s while the engine is running. &
WARNING Risk ofexplosion during
ch arging process and starting assis tance
During thech arging process and starting
assis tance, the battery may release an explo‐
sive gas mixture. #
Avoid fire , open flames, creating spar ks
and smoking. #
Make sure that there is suf ficient venti‐
lation du ring thech arging process and
during starting assis tance. #
Do not lean over a batter y. &
WARNING Risk ofexplosion from a fro‐
zen battery
A dischar ged battery may freeze at temp era‐
tures slightly abo veor below freezing point.
During starting assis tance or battery charg‐
ing, bat tery gas may be released. #
Alw aysth aw a frozen bat tery out first
before charging it or per form ing start‐
ing assis tance. If
th e indicator/warning lamps in the instrument
clus ter do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has fro‐
zen. In this case you may neither jump-s tart the
ve hicle nor charge the batter y.
The service life of a battery that has been
th awe d may be dramatically shor tened. The
st arting characteristics may be impaired, espe‐
cially at low temp eratures.
It is recommended that you ha veathaw ed bat‐
te ry checked at a qualified specialist workshop. All
vehicles
* NO
TEDama gecaused bynumerous or
ex tended attem ptsto start the engine Nume
rous or extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting
assis tance and when charging the battery:
R Only use undamaged jumper cables/charg‐
ing cables with a suf ficient cross-section and
insula tedte rm inal clamps.
R Non- insulated parts of thete rm inal clamps
must not come into con tact wi thother me tal
parts while the jumper cable/charging cable
is connected tothe battery/jump-s tart con‐
nection point.
R The jumper cable/cha rging cable must not
come into con tact wi thany parts which may
mo vewhen the engine is running. Breakdown assi
stance 365

Opening
&
WARNING Risk of inju ryfrom using the
windshield wipers while the engine hood
is open
When the engine hood is open and the wind‐
shield wipers are set in motion, you can be
trapped bythe wiper linkage. #
Alw ays switch off the windshield wipers
and ignition before opening the engine
hood. #
Release retaining clips 1.
Pull co ver2 up. #
Remo veany existing moisture from the fuse
box using a dry clo th. #
Loosen scr ews4, and remo vefuse box lid
3 from theto p.
Closing #
Check whe ther the seal is positioned cor‐
re ctly in lid 3. 374
Breakdown assis tance

Display messages
Possible causes/consequences and 0050
0050Solutions
See Operator's Manual *NO
TEPossible engine damage if you continue driving #
Do not continue driving under any circum stances. #
Consult a qualified specialist workshop. #
Pull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions. #
Consult a qualified specialist workshop.
003D Stop Vehicle Leave Engine
Running *T
he battery charge leve l is too lo w. #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. Do not
continue driving under any circums tances. #
Lea vethe engine running. #
Wait until the display message disappears before pulling away.
Check Coolant Level See
Operator'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 341).
00B6 *T
here has been pressure loss in the fuel sy stem. The fuel filler cap is not closed cor rectly or the fuel sy stem is
leaking. #
Close the fuel filler cap. 442
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions
Check Engine Oil Level
(Add 1 quart) *
NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
When next refueling, add 1 quart of engine oil.
To p up engine oil (→ page 340).
No tes on engine oil (→ page412).
00B2 Che ck Engine Oil At Next
Refueling *T
he engine oil le vel has dropped tothe minimum le vel.
* NO
TEEngine dama gecaused bydriving with insuf ficient engine oil #
Avoid long journe yswith insuf ficient engine oil. #
Check the engine oil le vel when next refueling.
Ad d engine oil (→ page 340).
No tes on engine oil (→ page412). Tr
ansmission Display messages
Possible causes/consequences and 0050
0050Solutions
* The transmission is malfunctioning. The transmission shifts toposition 005Cautomaticall y. Displ
aymessa ges and warning/indicator lamps 447

Display messages
Possible causes/consequences and 0050
0050Solutions #
Stop theve hicle immediately, paying attention toroad and traf fic conditions. #
Close the hood.
0051 *A
t least one door is open. #
Close all doors.
0084 *T
he trunk lid is open. &
DANG ER Risk of exhaust gas poisoning
Combustion engines emit poisonous exhaust gases such as carbon monoxide. Exhaust gases can enter the
ve hicle interior if the trunk lid is open when the engine is running, especial lyifth eve hicle is in motion. #
Alw ays switch off the engine before opening the trunk lid. #
Never drive with the trunk lid open. #
Close the trunk lid.
00B2
Check Washer Fluid *T
hewasher fluid le vel in thewa sher fluid reser voir has dropped below the minimum. #
Addwa sher fluid (→ page 342). 458
Display messages and warning/indicator lamps

Climate control
Displ
aymessages
Possible causes/consequences and 0050
0050Solutions
Air Conditioning Malfunc-
tion See Operator's Manual *O
peration of the climate control sy stem is temp orarily restricted. Air flow and fresh air supply are set toautomatic
mode. #
Have the climate control sy stem checked at a qualified specialist workshop.
Let fresh air into the vehi-
cle interior. Air Condition-
ing Malf. Visit Workshop *T
he climate contro l system is malfunctioning. &
WARNING Risk of inju ryand accident due toan insuf ficient supply of fresh air
If th e climate control sy stem is malfunctioning, carbon dioxide le vels may inc rease in theve hicle interior.
Breathing in carbon dioxide may cause dizziness. #
Open the window toensure that there is a suf ficient supply of fresh ai r. #
Open the window toensure that there is an adequate supply of fresh air. #
Visit a qualified specialist workshop immediatel y. Soft
top Display messages
Possible causes/consequences and 0050 0050Solutions
0059 *T
he on-board electrical sy stem voltage is too lo w. #
Start the engine. Display messages and
warning/indicator lamps 459