2016 MERCEDES-BENZ S CLASS engine

PLUG ‑ IN HYBRID operation
Points to remember
General notes Hybrid technology combines a fuel efficient
internal combustion engine with a powerful
electric motor. In HYBRID mode, 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 HYBRID mode, 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 ( Y
page 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 ( Y
page 44). Important safety notes If the engine is switched off by the ECO start/
stop function and you open the driver's door: R
a message appears in the multifunction dis-
play and R
a warning tone sounds
Further information ( Y
page 297).
All of the vehicle's systems remain active, if: R
the vehicle is stationary R
the combustion engine is switched off and R
the 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 ( Y
page 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.240
PLUG ‑ IN HYBRID operation
Driving and parking

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

The electric motor supports the combustion
engine by providing additional torque when: R
the needle has exceeded area

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

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

Displaying fuel consumption an d generated electricit y
C
Fue l consumptionD
Electrical energ y generate d
Every bar of th e graph displays th e averag e valu e fo r on e minute.
Fue l consumption indicator C may diffe r from th e indicator in th e Fro m Start trip compute r in th e
Tri p menu.
To reset th e values: th e values are reset alon g wit h th e Fro m Start
trip compute r ( Y
page 262).X
To selec t Consumption : turn and press th e controller .
Fue l consumption C and electrical energ y D generate d fo r th e last 15 minutes are shown in th e
COMAN D display.
Starting th e engin eThe vehicle start s in electric mode without th e
internal combustion engin e (noiseles s start).
The internal combustion engin e start s only after
th e powe r demanded by th e driver exceeds th e
available powe r that th e electric moto r can cur -
rentl y provide.
Noiseless start operation is dependen t on th e
outsid e temperature and th e operatin g temper-
ature of th e internal combustion engine. If no t all
condition s fo r noiseles s start operation are ful-
filled, th e vehicle start s wit h th e internal com-
bustion engine. X
Switc h on th e ignition .X
Depress th e brake pedal. X
Observ e th e note s on startin g th e engin e
( Y
page 164). X
Start th e vehicle ( Y
page 164).
The vehicle is operational when READY indi-
cator C lights up.PLUG ‑ IN HYBRID operation 24 9
Driving an d parking Z

Pulling away X
Depress the brake pedal and keep it
depressed. X
Shift the transmission to position D or R .X
If the Apply Brake to Shift from 'P'
display message appears in the multifunction
display, depress the brake pedal more firmly
and select the desired transmission position. X
Release the brake pedal. X
Carefully depress the accelerator pedal.
For further information on pulling away
( Y
page 165).
Driving
Program selector button Automatic drive programs E, S and E+
X
Press program selector button C to change
the drive program.
The selected drive program appears in the
multifunction display. The program selector button allows you to
choose between different driving characteris-
tics.
E Economy R
Comfortable, economical
driving R
Electric operation mode
is used as often as possi-
ble R
ECO start/stop function
is available
S Sport R
Sporty driving style with
boost mode R
The internal combustion
engine is always
switched on
E+ Economy
Plus R
Comfortable, economical
driving R
Electric operation mode
is used as often as possi-
ble R
The ECO start/stop func-
tion is available R
Double pulses in the hap-
tic accelerator pedal, as
an indication to release
the accelerator pedal
( Y
page 251) R
After the accelerator
pedal has been released,
the coasting characteris-
tics of the vehicle are
adapted to the traffic
conditions
For further information on the automatic drive
program, see ( Y
page 174).
Manual drive program
In addition to automatic drive programs E and S ,
you can switch to manual drive program M using
the steering wheel paddle shifters.
In manual drive program M , you can briefly
change gear yourself by using the steering
wheel paddle shifters. The transmission must be
in position D . In manual drive program M the
internal combustion engine is always switched
on.250
PLUG ‑ IN HYBRID operation
Driving and parking

Activating when driving with the electric motor: X
Pull the left or right steering wheel paddle
shifter ( Y
page 174).
The combustion engine is switched on. Man-
ual drive program M is temporarily activated.
The selected gear and M appear in the multi-
function display.
Activating when driving with the combustion
engine: X
Pull the left or right steering wheel paddle
shifter ( Y
page 174).
Manual drive program M is temporarily acti-
vated. The selected gear and M appear in the
multifunction display.
The ECO start/stop function is not available in
manual drive program M .
Haptic accelerator pedal General notes The haptic accelerator pedal helps you to
reduce the fuel consumption and emissions of
your vehicle.
There are two different functions available for
this purpose: R
an additional point of resistance in E-MODE
operating mode ( Y
page 243)R
a double impulse in E+ operating mode
( Y
page 250)
Additional point of resistance in the hap-
tic accelerator pedal The maximum available electric performance is
indicated by a tangible point of resistance in the
haptic accelerator pedal.
The additional point of resistance is available in
E-MODE operating mode ( Y
page 243).
If you depress the haptic accelerator pedal
beyond the pressure point, the combustion
engine is switched on.
Double pulses in the haptic accelerator
pedal
A tangible double pulse in the haptic accelerator
pedal gives you a recommendation to release
the accelerator pedal. The combustion engine
can switch off and be disconnected from the
drive train (overrun mode).
The double pulse is available in drive program E+
( Y
page 250). After the accelerator pedal has been released,
the coasting characteristics of the vehicle are
adapted to the traffic conditions.
To avo id getting too close to the vehicle in front,
y
ou must apply the brakes manually when nec-
essary.
Driving tips General driving tips Drive carefully and maintain a safe distance
from the vehicle in front. Avoid frequent and
sudden acceleration as well as abrupt braking.
During partial electric driving, pulling away and
acceleration, the electric motor supports the
internal combustion engine.
During overrun in transmission position D and
braking, the electric motor will operate as a gen-
erator.
Further information on the ECO start/stop func-
tion ( Y
page 252).
Additional driving tips ( Y
page 192).
Stationary vehicle If the vehicle is stopped, the combustion engine
is, for the most part, switched off. Automatic
climate control continues to function. The elec-
tromechanically assisted steering gear allows
you to use the power steering without reduced
comfort.
Acceleration Depending on the operating mode, pulling away
and driving under low load conditions are per-
formed: R
entirely by electric propulsion R
in combination with the internal combustion
engine
When accelerating at an increased or full load,
boost mode is utilized. The electric motor sup-
ports the internal combustion engine by provid-
ing additional torque when the accelerator is
depressed rapidly.
Overrun mode or braking
There are three possible operating modes when
the hybrid vehicle is decelerating: R
energy recovery takes place even when the
vehicle is decelerating purely in overrun mode
( Y
page 240). The electric motor operates asPLUG ‑ IN HYBRID operation 251
Driving an d parking Z