charging MERCEDES-BENZ S CLASS 2016 Owner's Manual

E-SAVE R
Electric mode or driving
with the internal combus-
tion engine is possible R
Automatic selection of
drive mode with electric
mode as often as possi-
ble R
The current condition of
charge of the high-volt-
age battery is maintained
so the electrical energy
can be used at a later
time.
CHARGE R
Electric drive is not pos-
sible R
The high-voltage battery
is charging while driving
with the combustion
engine
In automatic drive program S ( Y
page 250) and
in manual drive program M ( Y
page 250), only
HYBRID operating mode is available.
If you switch from automatic drive program S to
automatic drive program E or E+ , HYBRID oper-
ating mode continues to be selected.
If manual drive program M is deactivated, the
automatic transmission shifts: R
into the automatic drive program that was last
selected R
into the driving mode that was last selected
Each time the engine is started, HYBRID mode
is automatically selected.
Power meter The power meter supports you in electric mode
and displays the output obtained.
If you select the E-MODE operating mode, the
instrument cluster will display the power meter
instead of the tachometer.
i The tachometer appears again if: R
you select HYBRID , E-SAVE or CHARGER
the current state of charge of the high-volt-
age battery is too low to drive the vehicle in
the E-MODE electrical operating mode The power meter is divided into the following
areas: R
Limit C (OFF):
If the needle reaches limit C , the electric
motor and the combustion engine are
switched off. R
Area D to

Engine running while vehicle is stationary
The combustion engine is running while the
vehicle is stationary. The high-voltage battery is
not being charged.
The arrows for the energy flow are not shown.
The combustion engine is highlighted.
Charging while vehicle is stationary
The engine powers the electric motor. The elec-
tric motor operates as a generator. The high-
voltage battery is being charged.
The arrow representing energy flow is shown in
white.
Driving using the engine
The engine powers the vehicle. The arrows for the energy flow are shown in
white.
Driving using the engine plus boost mode
If you rapidly depress the accelerator, the elec-
tric motor supports the internal combustion
engine by providing additional torque.
The arrows for the energy flow are shown in red.
Driving using the engine plus energy
recovery
The engine powers the vehicle. The electric
motor is operating as a generator, e.g. in over-
run mode and when braking ( Y
page 253). The
kinetic energy of the vehicle is converted into
electrical energy. The high-voltage battery is
being charged.
The arrows for the energy flow are shown in
green.246
PLUG ‑ IN HYBRID operation
Driving and parking

Driving using th e internal combustion
engin e and charging th e high-voltage bat -
tery
The engin e powers th e vehicle. The engin e also
powers th e electric motor. The electric motor
operates as a generator. The high-voltag e bat -
tery is bein g charged.
The arrows fo r th e energ y flo w are shown in
white.
Driving using th e internal combustion
engin e and discharging th e high-voltage
battery
The engin e powers th e vehicle. If th e vehicl e is
approachin g a downhill gradien t wit h a hig h
potential fo r energ y recuperation , th e condition
of charg e of th e high-voltag e battery is inten-
tionally kept low or intentionally reduced.
The arrows fo r th e energ y flo w are shown in
white.
Further information on th e route-based operat -
in g strategy ( Y
page 253). Electri c operation mode
The electric motor powers th e vehicle. The high-
voltag e battery supplies energ y to th e electric
motor.
The arrows fo r th e energ y flo w are shown in
green .
Electri c operation mode and charging th e
high-voltage batter y
The electric motor is operatin g as a generator,
e.g. in overrun mod e and when brakin g
( Y
page 253). The kineti c energ y of th e vehicl e
is converted into electrica l energy. The high-
voltag e battery is bein g charged.
The arrows fo r th e energ y flo w are shown in
green .PLUG ‑ IN HYBRID operation 247
Driving and parking Z

Charging the high-voltage battery when
stationary
The engine and electric motor are switched off.
The arrows for the energy flow are not shown.
Further information on charging the high-volt-
age battery via: R
a mains socket ( Y
page 183)R
a charging station ( Y
page 186)R
a wallbox ( Y
page 185)
Displaying the total range and electrical
range
The approximate range is based on the current
driving style. X
Use

X
Use d or c to select the DriveAssist
submenu. X
Press v to confirm your selection.X
Press the d or c button to select
Lane Keeping Assist .X
Press v to confirm.
The current selection, Standard or Adap‐
tive , appears.X
To change the setting: press v again.
For further information about Active Lane Keep-
ing Assist, see ( Y
page 237).
HYBRID submenu (PLUG-IN HYBRID
vehicles) Setting the maximum charge current Using the Max. Charge Current function, you
can limit the charge current value at which the
high-voltage battery should be charged.
Before starting the charging process at a power
socket, check the maximum permissible charge
current for the relevant power socket or the
building.
Only set the maximum permissible charge cur-
rent using the function if: R
it is not possible to set the charge current on
the charging cable R
the precise maximum permitted charge cur-
rent can only be set via the on-board com-
puter
Before charging the high-voltage battery at a
wallbox or charging station, ensure that the
charging current is not limited by the function. If
charging at a wallbox or a charging station,
select the maximum value.
Further information on charging the high-volt-
age battery and setting the charge current
(PLUG-IN HYBRID vehicles) ( Y
page 181).X
Press

condition of charge of the high-voltage bat-
tery for the departure time set.
Further information on charging the high-volt-
age battery (PLUG-IN HYBRID vehicles)
( Y
page 181).
Head-up display submenu Selecting other displays
C
Vehicle speed displayD
Vehicle speed and navigation instruction
display

Display messages
Possible causes/consequences and P Solutions
I (USA
only)
$ ( Canada
only)
Parkin g Brake Inop‐
erativ e The yellow $ warning lamp lights up. The red I (US A only)
or $ (Canada only) indicator lamp flashes for about te n seconds
after th e electric parking brak e has been applie d or released. It then
goe s out or remain s lit .
The electric parking brak e is malfunctioning , e.g. because of over-
voltag e or undervoltage. X
Remove th e caus e for th e overvoltage or undervoltage, e.g. by
charging th e battery or restarting th e engine.X
Engage or release th e electric parking brake.
If it remain s impossible to apply or release th e electric parking brake:X
Switc h off th e ignition and tur n it bac k on .X
Engage or release th e electric parking brake.
If th e electric parking brak e still canno t be released:X
Consult a qualified specialist workshop .
If th e electric parking brak e still canno t be applied:X
Visit a qualified specialist workshop .
The yellow $ warning lamp lights up and th e red I (US A only)
or $ (Canada only) indicator lamp flashes .
It is no t possibl e to apply th e electric parking brak e manually.X
Shift th e transmission to position P .X
Visit a qualified specialist workshop .
' (USA
only)
M ( Canada
only)
Check Brake Fluid
Level There is no t enough brak e flui d in th e brak e fluid reservoir .
In addition , th e ' (US A only) or M (Canada only) warning lamp
lights up in th e instrumen t cluste r and a warning tone sounds.
G WARNIN G
The braking effec t may be impaired.
There is a ris k of an accident.X
Pull ove r and stop th e vehicl e safely as soo n as possible, payin g
attention to roa d and traffic conditions. Do no t continu e drivin g
under any circumstances. X
Secur e th e vehicl e against rollin g away ( Y
page 189).X
Consult a qualified specialist workshop .X
Do no t add brak e fluid . This does no t correc t th e malfunction .
& Check Brake Pad Wea r The brak e pads/linings hav e reached their wear limit.
US A only: th e red ' brak e system warning lamp also lights up while
th e engin e is running. X
Visit a qualified specialist workshop .
S Inoperative On e or mor e main features of th e mbrace system are malfunctioning .X
Visit a qualified specialist workshop .Display messages 28 3
On-board computer and displays Z

Battery (vehicle)
12 V battery – important safety notes PLUG-IN HYBRID vehicles are equipped with a
12 V battery and a high-voltage battery. The fol-
lowing notes refer to the 12 V battery. Notes on
the high-voltage battery can be obtained in the
"High-voltage battery – important safety notes"
section ( Y
page 374).
Special tools and expert knowledge are required
when working on the battery, e.g. removal and
installation. You should therefore have all work
involving the battery carried out at a qualified
specialist workshop.
G WARNING
Work carried out incorrectly on the battery
can lead, for example, to a short circuit and
thus damage the vehicle electronics. This can
lead to function restrictions applying to
safety-relevant systems, e.g the lighting sys-
tem, the ABS (anti-lock braking system) or the
ESP ®
(Electronic Stability Program). The oper-
ating safety of your vehicle may be restricted.
You could lose control of the vehicle, for
example: R
when braking R
in the event of abrupt steering maneuvers
and/or when the vehicle's speed is not
adapted to the road conditions
There is a risk of an accident.
In the event of a short circuit or a similar inci-
dent, contact a qualified specialist workshop
immediately. Do not drive any further. You
should have all work involving the battery car-
ried out at a qualified specialist workshop.
For further information about ABS and ESP ®
,
see ( Y
page 68) and ( Y
page 73).
All vehicles except Mercedes-AMG vehicles:
G WARNING
Electrostatic build-up can lead to the creation
of sparks, which could ignite the highly explo-
sive gases of a battery. There is a risk of an
explosion. Before handling the battery, touch the vehicle
body to remove any existing electrostatic
build-up.
The highly flammable gas mixture forms when
charging the battery as well as when jump-start-
ing.
Always make sure that neither you nor the bat-
tery is electrostatically charged. A build-up of
electrostatic charge can be caused, for exam-
ple: R
by wearing clothing made from synthetic
fibers R
due to friction between clothing and seats R
if you push or pull the battery across the car-
pet or other synthetic materials R
if you wipe the battery with a cloth
G WARNING
During the charging process, a battery produ-
ces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion. R
Make sure that the positive terminal of a
connected battery does not come into con-
tact with vehicle parts. R
Never place metal objects or tools on a bat-
tery. R
It is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting a battery. R
When jump-starting, make sure that the
battery poles with identical polarity are
connected. R
It is particularly important to observe the
described order when connecting and dis-
connecting the jumper cables. R
Never connect or disconnect the battery
terminals while the engine is running.
G WARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter-
ies. Wash away battery acid immediately with372
Battery (vehicle)
Breakdo wn assis tance

Remove th e SmartKey if you park th e vehicl e
and do no t require any electrical consumers.
The vehicl e will then use ver y littl e energy, thus
conserving battery power .
PLUG-IN HYBRID vehicles: if th e battery
charge is sufficient, th e high-voltage battery can
also suppl y th e 12 V battery. This only happens
if th e condition of charge of th e 12 V battery
require s this, e.g. after usin g electrical consum-
ers for an extended period wit h th e engin e
switched off . As th e on-board voltag e is contin-
uously monitore d this can also be performed
when th e engin e is switched off . The condition of
charge of th e 12 V battery and th e on-board
voltag e are thereby kept stable for a longer
period.
High-voltage battery – important
safety notes Only PLUG-I N HYBRID vehicles are equipped
wit h a high-voltage battery.
G DANGER
The vehicle's high-voltage electrical system is
under high voltage. If you modify component s
in th e vehicle's high-voltage electrical system
or touch damaged components, you may be
electrocuted. The component s in th e vehi-
cle's high-voltage electrical system may be
damaged in an accident, althoug h th e damag e
is no t visible. There is a ris k of fatal injury.
Followin g an accident, do no t touch any high -
voltag e component s and never modify th e
vehicle's high-voltage electrical system. Hav e
th e vehicl e towed away after an acciden t and
th e vehicle's high-voltage electrical system
checke d by a qualified specialist workshop.
G WARNIN G
In th e event of a vehicl e fire, th e internal pres-
sur e of th e high-voltage battery can exceed a
critical value . In this cas e flammabl e gas
escapes throug h a ventilation valv e on th e
underbody. The gas can ignite. There is a ris k
of injury.
Leav e th e danger zone immediately. Secur e
th e danger area at a suitable distance, whils t
observing legal requirements . G WARNIN G
If th e housing of th e high-voltage battery has
been damaged, electrolyt e and gase s may
leak out . These are poisonous and caustic.
There is a ris k of injury.
Avoid contact wit h skin, eyes or clothing .
Immediately rinse electrolyt e splashes off
wit h water and seek medical attention
straight away.
! Exhaustive discharge caused by th e vehicl e
standing idle for lengthy periods can damag e
th e high-voltage battery. If th e vehicl e is idle
for lengthy periods leav e th e high-voltage bat -
tery connecte d to a charging station .
Consult an authorize d Mercedes-Benz Cente r if
you wish to leav e your vehicl e parked for a lon g
period of time.
Charging the 12 V battery Mercedes-AM G vehicles:
! Only use battery chargers wit h a maximum
charging voltag e of 14.4 V.
All other vehicles:
G WARNIN G
During charging and jump-starting , explosive
gase s can escape from th e battery. There is a
ris k of an explosion .
Particularly avoi d fire, open flames, creating
sparks and smoking. Ensur e there is sufficien t
ventilation while charging and jump-starting .
Do no t lean ove r a battery.
G WARNIN G
Battery acid is caustic. There is a ris k of injury.
Avoid contact wit h skin, eyes or clothing . Do
no t inhale any battery gases. Do no t lean ove r
th e battery. Kee p children away from batter-
ies. Wash away battery acid immediately wit h
plenty of clean water and seek medical atten -
tion .
G WARNIN G
A discharged battery can freez e at tempera-
tures belo w freezing point. When jump-start -374
Battery (vehicle)
Breakdown assistance

ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a maximum
charging voltage of 14.8 V.
All vehicles:
! Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment ( Y
page 376).X
Open the hood. X
Connect the battery charger to the positive
terminal and ground point in the same order
as when connecting the donor battery in the
jump-starting procedure ( Y
page 376).
Keep away from fire and open flames. Do not
lean over a battery. Never charge the battery if it
is still installed in the vehicle, unless you use a
battery charger which has been tested and
approved by Mercedes-Benz. A battery charger
unit specially adapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. It permits the
charging of the battery in its installed position.
Contact an authorized Mercedes-Benz Center
for further information and availability. Read the
battery charger's operating instructions before
charging the battery.
All vehicles except Mercedes-AMG vehicles:
if the indicator/warning lamps in the instrument
cluster do not light up at low temperatures, it is
very likely that the discharged battery has fro-
zen. In this case you may neither jump-start the
vehicle nor charge the battery. The service life of
a thawed-out battery may be shorter. The start-
ing characteristics can be impaired, particularly
at low temperatures. Have the thawed- out bat -
t ery checked at a qualified specialist workshop.
Mercedes-AMG vehicles: at low temperatures,
do not charge a battery which has been removed
using a battery charger. Allow the battery to
warm up gently first, if necessary. Otherwise,
the service life can be shortened and the start-
ing characteristics impaired, especially at low
temperatures.
PLUG-IN HYBRID vehicles: if the battery
charge is sufficient, the high-voltage battery can
also supply the 12 V battery. This only happens if the condition of charge of the 12 V battery
requires this, e.g. after using electrical consum-
ers for an extended period with the engine
switched off. As the on-board voltage is contin-
uously monitored this can also be performed
when the engine is switched off. The condition of
charge of the 12 V battery and the on-board
voltage are thereby kept stable for a longer
period.
Battery (vehicle) 375
Breakdown assistance Z