2017 MERCEDES-BENZ E43AMG 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.
#Ne ver 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.
#To use the braking ef fect of the engine,
shift toa lo werge ar in good time.
* NO
TEDama getothe driv etra in and the
engine when pulling away
#Do not warm upthe engine when 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
operating temp erature.
#Do not allow the wheels tospin.
* NO
TEDama getothe catalytic con verter
due tonon-combu sted fuel
The engine is not running smoot hly 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-treate dro ads:
RDue tosalt build-up on the brake discs and
brake lining, the braking dis tance can
increase conside rably or result in braking
only on one side.
RMaintain a much greater dis tance totheve hi‐
cle in front.
To preve nt salt build-up:
RBrake occasionally while paying attention to
th e tra ffic conditions.
RCarefully depress the brake pedal at the end
of the journey and when starting the next
journe y.
ECOstart/s top function
Opera tion of the ECO start/s top function
The engine is switched off au tomatical ly:
RIf yo ubr ake theve hicle toast andstill in
transmission position hori.
RIf all vehicle conditions for an au tomatic
engine stop are met.
13 4
Driving and pa rking

Speed control cruise control
Function of cruise control
Cruise cont rol accelerates and brakes theve hi‐
cle automatically in order tomaintain a pr evi‐
ously stored speed.
If yo u accelerate toove rtake, forex ample, the
st ored speed is not dele ted. If youre mo veyour
fo ot from the accelerator pedal af terove rtaking,
cruise control will resume speed regulation back
to thestored speed.
Yo u can operate cruise cont rol with the cruise
control le ver.
If yo ufa ilto adapt your drivin gst yle, cruise con‐
trol can neither reduce therisk of an accident
nor override the la wsof ph ysics. It cannot take
into account road, weather or traf fic conditions.
Cruise control is only an aid. You are responsible
fo rth e dis tance totheve hicle in front, forve hi‐
cle speed, for braking in good time and forst ay ‐
ing in your lane.
Sy stem limitations
Cruise control may be unable tomaintain the
st ored speed on uphill gradients. The stored
speed is resumed when the gradient evens out. Do not use cruise control in
thefo llowing situa‐
tions:RIn traf fic situations whi chrequ ire frequent
ch anges of speed, e.g. in heavy traf fic, on
winding roads.
ROn slippery roads. Accelerating can cause
th e drive wheels tolose traction and the
ve hicle could then skid.
RWhen visibility is poor.
Operating cruise control
& WARNING Risk of accident due to
unkno wnstored speed
If yo u call up thestored speed and this is
lo we rth an your cur rent speed, theve hicle
decelerates.
If yo udo not kn owthestored speed, the
ve hicle could decelerate unexpectedly.
#Take into account the tra ffic situation
before calling up thestored speed.
#If th estored speed is not known, store
th e desired speed again.
Change into a lo werge ar in good time on long
and steep downhill gradients. Take particular
no te ofthis when driving a laden vehicle. By
doing so, youwill make use of the braking ef fect
of the engine. This relie vesth e load on the brake
sy stem and pr events the brakes from overheat‐
ing and wearing tooqu ickl y.
Re quirements
RCruise control is selected.
RESP®must be switched on, but not inter ven‐
ing.
RThe driving speed must be at least15mp h
(20 km/h).
16 0
Driving and pa rking

openthe cap, you could bescalded byhot
coolant spr aying out.
#Let the mo tor cool down before opening
th e cap.
#When opening the cap, wearglove s and
pr otective eyew ear.
#Slowly turn the cap half a turn toallow
pressure toescape.
#Park theve hicle on a flat 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).
#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:
RIfth e engine is cold, up tomar ker bar 2
RIfth e engine is warm, up to0.6 in (1.5 cm)
ove r mar ker bar 2
#If necessar y,add coolant that has been tes‐
te d and appr ovedby Mercedes-Benz.
RFurther information on coolant (→page 376)
Re filling the windshield washer sy stem
&
WARNING Risk of burn s 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 burn s when open‐
ing the engine hood
If yo u open the engine hood when the engine
has overheated or during a fire inthe engine
compartment, you could come into contact
wit h hot gases or other escaping operating
fl uids.
#Before opening the engine hood, allow
th e engine tocool down.
#Intheeve nt of a fire inthe engine com‐
partment, keep the engine hood closed
and call thefire service.
Maintenance and care 309

Coolant
Notes on coolant
Obser vethe no tes on operating fluids
(
→page 372).
&
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.
#Make surethat 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.
Fu rther information on coolant:
RIn the Mercedes-Benz Specifications for
Operating Fluids 310.1, e.g. online at
http://be vo.mercedes-benz.com.
RAt aqu alified specialist workshop.
* NO
TEOverheating at high outside tem‐
peratures
If an inappro priate 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 an appropriate coolant.
Ha ve the coolant regularly changed at a qualified
specialist workshop. The proportion of cor
rosion inhibitor/ antifreeze
concentrate in the engine cooling sy stem should
be:
RA minimum of 50% (antifreeze pr otection
down toappr oximately -35 °F (-37 °C)).
RA maximum of 55% (antifreeze pr otection
down to-49 °F (-45 °C)).
Coolant filling capacity
Model Filling capacity
All models 12.7 US qt (12.0 l)
Note s on windshield washer fluid
Obser vethe no tes on operating fluids
(→page 372).
&
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.
37 6
Tech nical da ta

Displaymessages
Possible causes/consequences and MSolutions
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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 burn s 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.
#Wa it until the engine has cooled down.
#Make sure that the air supply tothera diator is not obstructed.
#Av oiding high loads on the engine, drive on tothe nearest qualified specialist workshop. In doing so, ensure that
th e coolant temp erature display remains below 248 °F (120 °C).
406
Display message s andwarning/indicator lamps

Displaymessages
Possible causes/consequences and MSolutions
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he transmission has overheated. Pulling away can 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.
#St art the engine.
#Wa it until the display message disappears before pulling away.
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he auxiliary batteryforth e transmission is no longer being charge d.
#Consult a qualified specialist workshop.
#Un tilthen, manually set the transmission toposition jbefore you switch offthe engine.
#Before leaving theve hicle, apply the electric parking brake.
Ð
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&DUHIXOO\ 6HUYLFH 5HTXLUHG *T
he po wer assi stance of thesteering is malfunctioning. You may need touse more forc eto steer.
#Drive on carefull y.
#Consult aqualified specialist workshop.
Display messages and warning/indicator lamps 41
7

Warning/indicator lamp
Possible causes/consequences and MSolutions
?
Coolantwarning lamp The
red coolant warning lamp is lit while the engine is running.
Po ssible causes are:RThe temp erature sensor is malfunctioning
RThe coolant le vel is too low
RThe air supply tothera diator is obstructed
RThe radiator fan is de fective
If th ere is an additional warning tone, the coolant temp erature has exceeded 248 °F (120 °C).
&
WARNING Danger of burn s 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.
#Pull over and stop theve hicle safely and switch off the engine, paying attention toroad and traf fic conditions. Do
not continue driving under any circums tances.
#Obser vethe messages in the multifunction displa y.
If th e coolant temp erature display is at the lo wer end of thete mp erature scale:
#Consult a qualified specialist workshop.
438
Display messages and warning/indicator lamps

ÐSteering Malfunction Stop
Immediately See Operator's Manual ....418
St eering Pilot Cur rently Unavailable
See Operator's Manual ........................ 403
St eering Pilot Inoperative .................... 403
St op Vehicle Lea veEngine Running
Wa itTransmission Cooling ...................417
#St opVehicle Lea veEngine Run‐
ning ..................................................... 408
#St opVehicle See Operator's
Manual ................................................ 407
ÉSt opVehicle Vehicle Too Low ...... 398
bSwitch Off Lights .........................422
bSwitch On Headlamp s................. 422
Ti re Press. Monitor Cur rently
Un available .......................................... .411
Ti re Press. Monitor Inoperative ............412
Ti re Pressure Monitor Inoperative No
Wheel Sensors .....................................4 12
Ti re s Overheated ..................................4 12Ti
re s Overheated Decrease Speed .......413
To Deselect P or N,Dep ress Brake
and Start Engine .................................. 415
Tr af fic Sign Assist CameraView
Re stricted See Ope rator's Manual .......400
Tr af fic Sign Assist Currently Unavail‐
able See Operator's Manual ................ 403
Tr af fic Sign Assist Inoper
ative............. 403
Tr an

smission Malfunction Stop ............ 416
FTu rnOn the Ignition to Release
th ePa rking Brake ................................ 386
dVe hicle Operational Switch the
Ignition Off Before Exiting ....................416
ÉVe hicle Rising Please Wait.......... .397
ÉVe hicle Rising .............................. 397
hWa rning Tire Malfunction .............411
hWheel Sensor(s) Missing ..............412
Distance cont rol
see Dis tance Pilot DISTRONIC Di
stance Pilot DISTRONIC ...................... .161
Ac tivating ............................................ 164
Ac tivation conditions ........................... 164
Callin g up a speed .............................. .164
Deactivating ........................................ 164
Fu nction ............................................... 161
Le ver ................................................... 164
Setting a speed ................................... 164
St oring a speed ................................... 164
Sy stem limits ....................................... 161
Distance recorder .................................. .204
DI STRO NIC
see Dis tance Pilot DISTRONIC
Door Locking (emergency key) ...................... .63
Opening (from inside) ............................6 0
Un locking (emer gency key) .................. .63
Un locking (from inside) ........ ...
.............
.60
Door cont rol panel .................................... .14
DO T,Tire Identification Number (TIN) ... 351
Drinking and driving ................................132
Driv eAwa y Assist .................................... 188
452
Index