Rthe radar sensors in the front or rear bumpers
or the radiator trim are dirty, e.g. obscured by
snow
Rthere are no, several or unclear lane markings
for a lane, e.g. in areas with road construction
work
Rthe lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
Rthe distance to the vehicle in front is too small
and the lane markings thus cannot be detec-
ted
Rthe lane markings change quickly, e.g. lanes
branch off, cross one another or merge
Rthe road is narrow and winding
Rthere are strong shadows cast on the road
If no vehicle is detected in the adjacent lane and
broken lane markings are detected, no lane-cor-
recting brake application is made.
Warning vibration in the steering wheel
A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of
intermittent vibration in the steering wheel for
up to 1.5 second s.
In orde r that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes
Ryou cut the corner on a bend
Lane-correcting brake application
If you leave your lane, under certain circumstan-
ces the vehicle will brake briefly on one side.
This is meant to assist you in bringing the vehicle
back to the original lane.
GWARNING
A lane-correcting brake application cannot
always bring the vehicle back into the original lane. There is a risk of an accident.
Always steer, brake or accelerate yourself,
especially if Active Lane Keeping Assist warns
you or makes a lane-correcting brake appli-
cation.
GWARNING
Active Lane Keeping Assist does not detect
traffic conditions or road users. In very rare
cases, the system may make an inappropriate brake application, e.g. after intentionally driv-
ing over a solid lane marking. There is a risk of
an accident.
An inappropriate brake application may be
interrupted at any time if you steer slightly in
the opposite direction. Always make sure that
there is sufficient distance on the side for
other traffic or obstacles.
If a lane-correcting brake application occurs,
display :appears in the multifunction display.
The brake application also slightly reduces vehi-
cle speed.
A lane-correcting brake application can be made
after driving over a lane marking recognized as
being solid or broken. Before this, a warning
must be given by means of intermittent vibration
in the steering wheel. In addition, a lane with
lane markings on both sides must be recog-
nized.
In the case of a broken lane marking being
detected, a lane-correcting brake application
can only be made if a vehicle has been detected
in the adjacent lane. The following vehicles can
have an influence on brake application: oncom-
ing traffic, vehicles that are overtaking and vehi-
cles that are driving parallel to your vehicle.
iA further lane-correcting brake application
can only occur after your vehicle has returned
to the original lane.
238Driving systems
Driving and parking
No lane-correcting brake application occurs if:
Ryou clearly and actively steer, brake or accel-erate.
Ryou cut the corner on a sharp bend.
Ryou have switched on the turn signal.
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist.
Ryou have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration.
RESP®is switched off.
Rthe transmission is not in position D.
Ra loss of tire pressure or a defective tire has
been detected and displayed.
Ran obstacle in the lane in which you are driving
has been detected.
Active Lane Keeping Assist may not detect other
road users or traffic situations. An inappropriate
brake application may be interrupted at any time
if you:
Rsteer slightly in the opposite direction
Rswitch on the turn signal
Rclearly brake or accelerate
A lane-correcting brake application is interrup-
ted automatically if:
Ra driving safety system intervenes, e.g. ESP®,
PRE-SAFE®Brake or Active Blind Spot Assist.
Rlane markings can no longer be recognized.
Switching on Active Lane Keeping Assist
XPress button ;.
Indicator lamp :lights up. The Lane Keep‐
ingAssistOnmessage appears in the mul-
tifunction display. If all conditions have been
satisfied, a warning or steering intervention
may be made.
If you drive at speeds above 40 mph
(60 km/h) and lane markings are detected, the lines in the assistance graphics display
(
Ypage 268) are shown in green. Active Lane
Keeping Assist is ready for use.
XTo switch off: press button;.
Indicator lamp :goes out. The Active Lane
Keeping Assist is deactivated. The Lane
Keeping Assist Offmessage appears in
the multifunction display.
Selecting Standard or Adaptive setting
XIn the DriveAssistmenu on the on-board
computer, select the Active Lane Keep‐
ing Assistfunction (Ypage 271).
XSelectStandardorAdaptive.
When Standardis selected, no warning vibra-
tion occurs if:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, such as
ABS, BAS or ESP®.
When Adaptive
is selected, no warning vibra-
tion occurs if:
Ryou switch on the turn signals. In this event,
the warnings are suppressed for a certain
period of time.
Ra driving safety system intervenes, e.g.
ABS, BAS or ESP®.
Ryou accelerate hard, e.g. kickdown.
Ryou brake hard.
Ryou steer actively, e.g. swerve to avoid an
obstacle or change lanes quickly.
Ryou cut the corner on a sharp bend.
In order that you are warned only when neces-
sary and in good time if you cross the lane mark-
ing, the system recognizes certain conditions
and warns you accordingly.
The warning vibration occurs earlier if:
Ryou approach the outer lane marking on a
bend.
Rthe road has very wide lanes, e.g. a highway.
Rthe system recognizes solid lane markings.
The warning vibration occurs later if:
Rthe road has narrow lanes
Ryou cut the corner on a bend
Driving systems239
Driving and parking
Z
PLUG‑IN HYBRID operation
Points to remember
General notes
Hybrid technology combines a fuel efficient
internal combustion engine with a powerful
electric motor. In HYBRIDmode, the hybrid
drive system automatically selects the most effi-
cient operating mode for every driving situation. Drive the vehicle in the usual manner.
To save fuel in HYBRIDmode, the hybrid drive
system switches off the combustion engine as
often as possible during the journey when power
output requirements are low. When power out-
put requirements are low, the electric motor
powers the vehicle. The combustion engine is
automatically activated when power output
requirements are high. The engine is usually
switched off when the vehicle is stationary. Con-
sequently, there is usually no engine idling as
with combustion engine vehicles.
For pulling away and accelerating, the electric
motor supports the internal combustion engine
using the power stored in the high-voltage bat-
tery. In addition, the power is used for partially
electric driving, operation of the electric coolant
compressor and to support the 12 V on-board
electrical system. In this way the hybrid drive
system helps to reduce your vehicle's fuel con-
sumption.
Observe the driving tips on PLUG-IN HYBRID
operation (
Ypage 251).
Recuperative Brake System
If you release the accelerator pedal when the
vehicle is in motion, overrun recuperation is ini-
tiated. The electric motor is operated as a gen-
erator when in overrun mode and when you
brake. Hybrid technology converts the kinetic
energy of the vehicle into electricity and stores
it in the high-voltage battery.
Observe the important safety notes for the
Recuperative Brake System (
Ypage 44).
Important safety notes
If the engine is switched off by the ECO start/
stop function and you open the driver's door:
Ra message appears in the multifunction dis-
play and
Ra warning tone sounds
Further information (
Ypage 297).
All of the vehicle's systems remain active, if:
Rthe vehicle is stationary
Rthe combustion engine is switched off and
Rthe READY indicator in the instrument cluster
lights up
If you remove your foot from the brake pedal
while in transmission position D or R, the vehicle
may pull away automatically.
Observe the notes on the READY display of the
ECO start/stop function (
Ypage 252).
Vehicles with an electric motor generate much
less driving noise than vehicles with internal
combustion engines. As a result, your vehicle
may not be heard by other road users in certain
situations.
Depending on the vehicle's equipment and
country-specific regulations, the vehicle can be
equipped with Acoustic Vehicle Indication.
Acoustic Vehicle Indication generates a certain
sound at a speed between 0 and 19 mph
(30 km/h). This helps other road users, partic-
ularly pedestrians and cyclists, to hear your
vehicle better. The sound can also be heard
inside the vehicle.
The volume depends on the engine speed. The
faster you accelerate, the louder the sound is. At
a speed of over 19 mph (30 km/h) the sound is switched off. Above this speed, the natural
sounds from the vehicle are sufficient that it can
be heard in good time by other road users.
240PLUG‑IN HYBRID operation
Driving and parking
Displaying fuel consumption andgenerated electricit y
:Fuelconsumption
;Electrical energ ygenerate d
Every bar of th egraph displays th eaverag evalu efo ron eminute.
Fue lconsumption indicator :may diffe rfrom th eindicator in th eFro m
Starttrip compute rin th e
Tri pmenu.
To reset th evalues: thevalues are reset alon gwit hth eFro mStart
trip compute r (Ypage 262).
XTo selectConsumption:turn and press th econtroller .
Fue lconsumption :and electrical energ y; generate dfo rth elast 15 minutes are shown in th e
COMAN Ddisplay.
Starting th eengin e
The vehicle start sin electric mode without th e
internal combustion engin e(noiseles sstart).
The internal combustion engin estart sonly after
th epowe rdemanded by th edriver exceeds th e
available powe rthat th eelectric moto rcan cur -
rentl yprovide.
Noiseless start operation is dependen ton th e
outsid etemperature and th eoperatin gtemper-
ature of th einternal combustion engine. If no tall
condition sfo rnoiseles sstart operation are ful-
filled, th evehicle start swit hth einternal com-
bustion engine.
XSwitc hon th eignition .
XDepress th ebrake pedal.
XObserv eth enote son startin gth eengin e
(Ypage 164).
XStart th evehicle (Ypage 164).
The vehicle is operational when READY indi-
cator :lights up.
PLUG‑ IN HYBRID operation249
Driving an d parking
Z
a generator and stores the recovered energy
in the high-voltage battery
Rwhen the brakes are applied lightly, the vehi-
cle is slowed down further by the electric
motor. This increases the energy recovery
taking place (
Ypage 240). The electric motor
operates as a generator and stores the recov-
ered energy in the high-voltage battery
Rwhen the brakes are applied with greater
force, the service brakes are also used to slow
the vehicle down. The two systems work
together
Urban driving
Energy is recuperated during frequent deceler-
ation and stopping in city traffic.
The vehicle can be driven by the electric motor
alone up to a speed of approximately 81 mph
(130 km/h).
The vehicle is driven by the electric motor alone
only when all conditions for the automatic
engine switch-off are fulfilled.
Further information on the automatic engine
switch-off (
Ypage 252).
Driving on inter-urban roads
The following phases are possible when driving
on inter-urban roads:
Rrapid acceleration (boost mode)
Rconstant energy consumption
Renergy recuperation
Relectric operation mode
A great deal of recovered energy may be avail-
able, depending on the route profile. This
reduces consumption and emissions.
Highway driving
During highway driving, fuel consumption and
emissions are favorably influenced in particular
by reduced power losses.
The internal combustion engine will be switched
off automatically, if:
Rthe driver removes his or her foot from the
accelerator pedal in drive program Eand a
speed of 81 mph (130 km/h) is not exceeded
Rthe driver removes his or her foot from the
accelerator pedal in drive program E+and a
speed of 112 mph (180 km/h) is not excee-
ded
Further information on the automatic engine
switch-off (
Ypage 252).
ECO start/stop function
General notes
The ECO start/stop function switches the inter- nal combustion engine off automatically when
the vehicle stops moving and at high speeds
(
Ypage 253).
All vehicle systems remain active, e.g. the auto-
matic climate control.
The ECO start/stop function is only available in
drive programs Eand E+. Electric-only operation
is only possible in drive programs Eand E+.
Additional information for drive programs Eand
E+ (
Ypage 250).
Automatic engine switch-off
The engine is switched off automatically, includ-
ing when:
Rthe driver removes his or her foot from the
accelerator pedal in drive program Eand a
speed of 81 mph (130km/ h)is not exceeded
(
Ypage 253)
Rthe driver removes his or her foot from the
accelerator pedal in drive program E+and a
speed of 112 mph (180 km/h) is not excee-
ded (
Ypage 253)
Rthe engine has reached its operating temper- ature
Rthe driver’s seat belt is fastened and the
driver’s door is closed
Rthe driver only slightly depresses the accel-
erator pedal in order to, for example, maintain
the current speed for a limited distance
Rthe hood is closed and engaged properly
Rthe high-voltage battery is charged suffi-
ciently
Rno malfunctions are present in the hybrid
drive system
The internal combustion engine will not be
switched off automatically, if:
Rthe self-diagnosis function of the engine con-
trol unit is still active
Rthere is a malfunction in the hybrid drive sys-
tem
Rthe climate control of the vehicle requires it
Rthe high-voltage battery is being charged
(Ypage 246)
Rautomatic emissions tests are running
252PLUG‑IN HYBRID operation
Driving and parking
Automa tic engine start
The automatically switched-off internal combus -
tio nengin estart sautomatically in certai nsitua-
tions ,if:
Rth epower demand from th edriver via th e
accelerato rpedal is greate rthan th eelectric
motor alon ecan provide
Rth edriver switches to driv eprogram Sor M
Rthecondition of charge of th ehigh-voltage
battery has reached th elower limit
Rth esettings of th eautomatic climat econtrol
require it, e.g. at external temperatures abov e
30 †
Overru nmod e
In overrun mode, th ecombustio nengin eis
switched off and is disconnected from th edriv e
train. The electric motor:
Rgenerates low thrust ,whic hcorrespond sto
th eoverrun mod eof an active combustio n
engin e
Rfunction sas agenerator and produce sth e
necessary energ yfor th eauxiliary consumer s
and charge sth ehigh-voltage battery
Ove rrun mod eis possible in th efollowin gspee d
range:
Rin driv eprogram Ebelow 81 mph (13 0km/h)
Rin driv eprogram E+below 11 2mph
(18 0km/h)
In driv eprogram E+,after th eaccelerato rpedal
has been released th ecoasting characteristic s
of th evehicl eare adapted to th etraffic condi-
tions .Further information about th ehaptic
accelerato r
p
edal (Ypage 251).
Route-based operating strategy
Forth eroute-based operating strategy, th esys-
te m factors in information about th eexpecte d
rout ewhen rout eguidance is active.
The information on th erout eis provide dby th e
multimedia system and includes th efollowing:
Rroad categories
Rspee dlimitation s
Rdataon downhill gradients The use of electric energ
yis automatically opti-
mally distributed from th ebeginnin gto th een d
of th ejourney, usin ginformation about th e
route. The distribution is pre-emptive and takes
int oconsideration :
Rthesections of th ejourney ahead
Rth eenerg yconsumption on th ewhole rout e
The condition of charge of th ehigh-voltage bat -
tery is thus systematically controlled. In addi-
tion, th econtrol function takes int oaccoun t
that:
Rth efuel saving sthroug hth euse of electrical
energ ycan vary, depending on th erout e(e.g.
urban ,interurban or highway)
Rth euse of electrical energ yis held available in
particular for electric operation (e.g. urban
routes)
The vehicl ethus automatically select sth eopti-
mum driving mod efor th erespectiv esectio nof
th eroute.
The route-based operating strategy is available
under th efollowin gconditions:
Rdriv eprogram E+is selected
RHYBRID driving mod eis selected
Ractive rout eguidance is activated
Rsuitable map dat ais available
When th eroute-based operating strategy is
bein gused, th earea in fron tof th evehicl eis
shown as green in th emultifunction display.
Parking
XApply th eelectric parking brake.
The red !indicator lamp in th einstrumen t
cluste rlight sup.
XUse th eDIRECT SELECT leve rto shif tth e
automatic transmission to P.
XSwitch theignition off .
The READY indicator in th einstrumen tcluste r
goes out .
Further information on parking and switching off
th einternal combustio nengin e (
Ypage 190).
PLUG‑ IN HYBRID operation253
Driving and parking
Z
Problems with PLUG-IN HYBRID operation
Internal combustion engine
ProblemPossible causes/consequences and MSolutions
You cannot start the
internal combustion
engine. The multifunc-
tion display shows no
display messages. The
READY indicator in the
multifunction display is
off.For example, self-diagnosis is not yet complete or the hybrid drive
system is malfunctioning.
XSwitch off the ignition and turn it back on.
XTry to start the internal combustion engine again.
If the internal combustion engine still does not start:
XConsult a qualified specialist workshop.
You wish to pull away,
but the ECO start/stop
function does not start
the internal combustion
engine. The READY indi-
cator in the multifunc-
tion display is off.The ECO start/stop function has failed. The warning and indicator
lamps in the instrument cluster light up.
XShift the transmission to P.
XSwitch off the ignition and turn it back on.
XStart the engine.
The hybrid drive system is faulty.
XConsult a qualified specialist workshop.
Recuperative Brake System
ProblemPossible causes/consequences and MSolutions
Braking resistance is
reduced and brake pedal
travel is longer than
usual.GRisk of accident
The Recuperative Brake System is malfunctioning.
XObserve the additional display messages in the multifunction dis-
play (Ypage 277).
XObserve the information regarding indicator and warning lamps in
the instrument cluster (Ypage 315) .
254PLUG‑IN HYBRID operation
Driving and parking
RDistance warning and the autonomous
braking function COLLISION PREVENTION
ASSIST PLUS (
Ypage 71)
RPRE-SAFE®Brake (Ypage 75)
RActive Blind Spot Assist (Ypage 234)
RATTENTION ASSIST (Ypage 228)
RActive Lane Keeping Assist (Ypage 237)
XPress:to display the ATTENTION ASSIST
assessment.
Service menu
Introduction
Depending on the equipment installed in the
vehicle, you have the following options in the
Service
menu:
RCalling up display messages in message
memory (Ypage 277)
RRestarting the tire pressure loss warning sys-
tem (Ypage 394)
RChecking the tire pressure electronically
(Ypage 390)
RCalling up the service due date (Ypage 358).
RDisplaying the coolant temperature (PLUG-IN
HYBRID vehicles) (Ypage 269)
RChecking the oil level using the on-board com-
puter (Ypage 355) (only S 600, Mercedes-
Maybach S 600 and Mercedes-AMG S 65
models)
Displaying the coolant temperature
The Coolantmenu is only available on PLUG ‑IN
HYBRID vehicles.
XPress the òbutton on the steering wheel
to open the menu list.
XPress :or9 on the steering wheel to
select the Servicemenu.
XConfirm by pressing aon the steering
wheel.
XPress the :or9 button to select
Coolant.
XPress ato confirm the selection.
The multifunction display shows the coolant
temperature in a bar display.
Settings menu
Introduction
Depending on the equipment installed in the
vehicle, you have the following options in the
Settings
menu:
RChanging assistance settings (Ypage 269)
RChanging HYBRID settings (PLUG-IN HYBRID
vehicles) (Ypage 272)
RChanging head-up display settings
(Ypage 273)
RChanging the light settings (Ypage 274)
RChanging the instrument cluster settings
(Ypage 274)
RRestoring the factory settings (Ypage 275)
Assistance submenu
Deactivating/activating ESP®
Observe the "Important safety notes" section in
the description of ESP®(Ypage 73).
Menus and submenus269
On-board computer and displays
Z