2019 MERCEDES-BENZ S-CLASS CABRIOLET engine overheat

&
WARNING Risk of accident due tothe
brake sy stem overheating
If yo u lea veyour foot on the brake pedal
when driving, the brake sy stem may over‐
heat.
This increases the braking dis tance and the
brake sy stem may evenfa il. #
Never use the brake pedal as a foot re st. #
Do not depress the brake pedal and the
accelerator pedal at the same time
while driving. *
NO
TEWearing out the brake linings by
continuously dep ressing the brake pedal #
Do not depress the brake pedal contin‐
uously whilst driving. #
Touse the braking ef fect of the engine,
shift toa lo werge ar in good time. *
NO
TEDama getothe driv etra in and
engine when pulling away #
Do not warm upthe engine while the
ve hicle is stationar y.Pull away immedi‐
atel y. #
Avoid high engine speeds and driving at
full thro ttle until the engine has reached
its operating temp erature. *
NO
TEDama getothe catalytic con verter
due tonon-combu sted fuel The engine is not
running smo othly and is
misfiring.
Non-combus ted fuel may get into the cata‐
lytic con verter. #
Only depress the accelera tor pedal
slightl y. #
Have the cause rectified immediately at
a qu alified specialist workshop. Limited braking ef
fect on salt-trea tedro ads:
R Due tosalt build-up on the brake discs and
brakepads, the braking dis tance can increase
conside rably or result in braking only on one
side
R Maintain a much greater safe dis tance tothe
ve hicle in front
To preve nt salt build-up:
R Brake occasionally while paying attention to
th e tra ffic conditions
R Carefully depress the brake pedal at the end
of the journey and when starting the next
journey ECO
start/s top function Ope
ration of the ECO start/s top function
Mercedes -AMG vehicles: observeth e no tes in
th e Supplement. Otherwise, you may failto rec‐
ognize dangers. 13 6
Driving and pa rking

doing so,
you will make use of the engine's brak‐
ing ef fect. This relie vesth e load on the brake
sy stem and pr events the brakes from overheat‐
ing and wearing tooqu ickl y.
Do not use cruise control in thefo llowing situa‐
tions:
R In traf fic situations whi chrequ ire frequent
ch anges of speed, e.g. in heavy traf fic, on
winding roads.
R On slippe ryroads. Accelerating can cause
th e drive wheels tolose traction and the
ve hicle could then skid.
R Ifyo u are driving when visibility is poor.
Ope rating cruise control &
WARNING Risk of accident due tostored
speed
If yo u call up thestored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates. #
Take into account the tra ffic situation
before calling up thestored speed. Re
quirements:
R ESP ®
must be activated, but not inter vening.
R The driven speed is at least 15mph
(20 km/h).
R The transmission is in position 005B. #
Toactivate cruise control: pressrock er
switch 1up. #
Toactivate cruise control: pressrock er
switch 2up (SET/+) or down (SET/-).
The cur rent speed is stored and maintained
by theve hicle.
or #
Press rocker switch 3up (RES).
The last stored speed is called up and main‐
ta ined bytheve hicle.
If th e last stored speed has pr eviously been
dele ted, the cur rently driven speed is stored.
% When you swit choff theve hicle, the last
speed stored is cleared. #
Toincrease/reduce speed: pressrock er
switch 2up/down tothe pressure point.
The stored speed is increased or reduced by
1 mp h (1 km/h).
or #
Press rocker switch 2beyond the pressure
point.
The stored speed is increased or reduced by
5 mp h (1 0 km/h).
or #
Accelerate theve hicle tothe desired speed. Driving and parking
16 5

R
at a qualified specialist workshop Coolant
Note
s on coolant
Obser vethe no tes on operating fluids
(→ page 410). &
WARNING ‑ Risk of fire and injury from
antifreeze
If antifreeze comes into con tact wi thhot
component parts in the engine compart‐
ment, it may ignite. #
Allow the engine tocool down before
adding antifreeze. #
Makesure that no antifreeze spills out
next tothefiller opening. #
Thoroughly clean off any antifreeze
from component parts before starting
th eve 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
- Athttp://be vo.mercedes-benz.com
- Inthe Mercedes-Benz BeVo app
R Ataqu alified 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 -35 °F (-37 °C))
R a maximum of 55% (antifreeze pr otection
down to-49 °F (-45 °C))
Coolant capacity Mode
lC apacity
S 560 15.0 US qt (14.2 l) Note
s on windshield washer fluid Obser
vethe no tes on operating fluids
(→ page 410). 414
Tech nical da ta

Display messages
Possible causes/consequences and 0050
0050Solutions #
Consult a qualified specialist workshop.
00AC *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 there d marking.
00AC
Coolant Too Hot Stop Vehi-
cle Turn Engine Off *T
he coolant is too hot. #
Pull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions. &
WARNING Danger of bu rns when opening the hood
If yo u open the hood when 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 hood, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the hood closed and call thefire service. #
Wait until the engine has cooled down. #
Make sure that the air supply tothera diator is not obstructed. #
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 there d marking. 444
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions
Transmission Malfunction
Stop #
Pull over and stop theve hicle safely as soon as possible, paying attention toroad and traf fic conditions. #
Switch the transmission toposition 005D. #
Consult a qualified specialist workshop.
Stop Vehicle Leave Engine
Running Wait Transmission
Cooling *T
he transmission is overheating. Pulling away may be temp orarily impaired or not possible. #
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.
To Deselect P or N,
Depress Brake and Start
Engine *
Yo u ha veattem ptedto shift the transmission out of position 005Dor005C into ano ther transmission position. #
Depress the brake pedal. #
Start the engine.
Apply Brake to Shift from
'P' *
Yo u ha veattem ptedto shift the transmission out of position 005Dand into ano ther transmission position. #
Depress the brake pedal.
Service Required Do Not
Shift Gears Visit Dealer *T
he transmission is malfunctioning. The transmission position can no longer be shif ted. #
When the transmission is in position 005B, consult aqualified specialist workshop and do not change the trans‐
mission position. #
For all other transmission positions, park theve hicle safely. #
Consult a qualified specialist workshop or breakdown service.
*T he transmission is malfunctioning. Reversege ar can no lon ger be engaged. 448
Displaymessa ges and warning/indicator lamps

Display messages
Possible causes/consequences and 0050
0050Solutions #
Pull over and stop theve hicle. #
Shift the transmission toposition 005D.
Shift to 'P' or 'N' to Start
Engine *
You ha vetried tostart the engine in transmission position 005Dor005C. #
Shift the transmission toposition 005Dor005C. Ti
res Display messages
Possible causes/consequences and 0050 0050Solutions
0077 Warning Tire Malfunction *T
he tire pressure in one or more tires has dropped suddenly. The wheel position is displa yed. &
WARNING Risk of an accident from driving wi thaflat tire
Flat tires are dangerous in thefo llowing ways:
R The tires can overheat and cause a fire.
R The driving characteristics, as well as steering and braking, may be greatly impaired.
Yo u could then lose control of theve hicle. #
Do not drive with a flat tire. #
Obse rveth e no tes on flat tires. No
tes on flat tires (→ page 356). 450
Display messages and warning/indicator lamps

Wa
rning/indicator lamp
Possible causes/consequences and 0050
0050Solutions
If th e fuel filler cap has already been closed cor rectly: #
Visit a qualified specialist workshop.
00B6 Fu elreser ve wa rning lamp The
yellow fuel reser vewarning lamp is lit while the engine is running.
The fuel supply has dropped into there ser verange. #
Refuel.
00AC
Coolant warning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes are:
R The temp erature sensor is malfunctioning
R The coolant le vel is too low
R The air supply tothera diator is obstructed
R The radiator fan is faulty
If th ere is an additional warning tone, the coolant temp erature has exceeded the maximum permissible temp erature. &
WARNING Danger of bu rns when opening the hood
If yo u open the hood when 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 hood, allow the engine tocool down. #
Intheeve nt of a fire inthe engine compartment, keep the hood closed and call thefire service. Display messages and
warning/indicator lamps 473

0049Switch On Headlamps
................. 462
0077Ti rePress. Monitor Cur rently
Un available .......................................... 452
0077Ti rePress. Monitor Inoperative ... 452
0077Ti rePressure Monitor Inopera‐
tive NoWheel Sensors ........................ 452
Ti re s Overheated ................................. 453
To Deselect P or N,Dep ress Brake
and Start Engine .................................. 448
To Engage Transmiss. Position R Fir st
Dep ress the Brake ...............................4 49
Tr af fic Sign Assi stCamera View
Re stricted See Ope rator's Manual .......436
Tr af fic Sign Assi stCur rently Unavail‐
able See Operator's Manual ................ 436
Tr af fic Sign Assi stInoperative ............. 435
Tr ansmission Malfunction Stop ............ 447
0058 Trunk Partition Open ...................461
0049 Turn On the Ignition to Release
th ePa rking Brake ................................ .419 00CC
Vehicle Rising Please Wait.......... .434
00CCVe hicle Rising .............................. 436
0077Wa rning Tire Malfunction ............ 450
0077Wheel Sensor(s) Missing .............452
0059 While stationar y,apply the
brakes before operating the soft top.
.............................................................4 60
Display on the windshield
see Head-up Display
Distance control see Active Dis tance Assi stDISTRONIC
Di stance recorder
see Trip dis tance
DI STRO NIC
see Active Dis tance Assi stDISTRONIC
Door Locking (emergency key) ...................... .65
Locking (from inside) ............................. 62
Opening (from the inside) ......................62
Po we r closing function ......................... .65
Un locking (emer gency key) .................. .65
Un locking (from the inside) ...................62 Door cont
rol panel (rear passenger
compartment) ............................................ 14
DO T,Tire Identification Number (TIN) ... 389
Dr aw bar
see Tow- bar sy stem
Drinking and driving ................................13 4
Drinks holder see Cup holder
Drive Away Assist .................................... 194
Drive position Inserting .............................................. 141
Drive prog ram display ............................. 13 8
Drive prog rams
see DYNA MIC SELECT
Driver's seat see Seat
Driving lights see Automatic driving lights
Driving saf ety sy stem ............................ .155
ABS (Anti-lock Braking Sy stem) ........... 15 6
Ac tive Brake Assi st.............................. 15 9
BA S (Brake Assi stSystem) .................. 15 6 Index
489