2014 MERCEDES-BENZ E400 HYBRID engine

X
Press Wthe COMAND controller.
The system display is shown as full screen
(without system menu).
X Slide XVY or turn cVdthe COMAND
controller until the desired display appears.
X To exit the full-screen display: pressW
the COMAND controller.
The system menu appears. Displays in the multifunction display
and in the COMAND display Example: information in the COMAND operating
mode display
1 Internal combustion engine
2 Electric motor
3 High-voltage battery
4 High-voltage battery condition of charge
5 Energy flow
i You can view the curren toperating mode
in the multifunction display and the
COMAND display. The active hybrid
components are highlighted. Operating mode in the multifunction
display and in the COMAND display
Automatic engine switch-off Example: COMAND display The engine and electric motor are switched
off. The arrows indicating energy flow are not
shown.
i
The condition of charge for the high-
voltage battery is shown only when the
SmartKey is in position 2in the ignition.
Engine running while vehicle is
stationary Example: COMAND display
The engine is running while the vehicle is
stationary. The high-voltage battery is not
being charged. The engine is highlighted in
the multifunction display and the COMAND
display.
Charging while vehicle is stationary
Example: COMAND display
The engine powers the electric motor. The
electric motor operates as a generator. The
high-voltage battery is being charged.
Driving using the engine
Example: COMAND display Menus and submenus
29On-board computer and displays

The engine powers the vehicle.
The arrows for the energy flow are shown in
white.
Driving using the engine plus boost
mode
Example: COMAND display
If you depress the accelerator pedal quickly,
the electric motor assists the engine by
providing extra torque.
The arrows indicating energy flow are red.
Driving using the engine plus energy
recovery Example: COMAND display
The engine powers the vehicle.
The electric motor is operating as a
generator, e.g. in overrun mode and when
braking (Y page 26). The kinetic energy of the
vehicle is converted into electrical energy and
stored in the high-voltage battery.
The arrows for the energy flow turn green. Driving using the engine while charging
the high-voltage battery Example: COMAND display
The engine powers the vehicle. The engine
also powers the electric motor
.The electric
motor operates as a generator. The high-
voltage battery is being charged.
The arrows for the energy flow are shown in
white.
Electric drive Example: COMAND display
The electric motor powers the vehicle. The
high-voltage battery supplies energy to the
electric motor.
The arrows for the energy flow turn green.
Electric drive while charging the high-
voltage battery
Example: COMAND display
The electric motor is operating as a
generator, e.g. in overrun mode and when
braking. The kinetic energy of the vehicle is30
Menus and submenusOn-board computer and displays

Internal combustion engine
Display messages Possible causes/consequences and
M Solutions
~
Malfunction The hybrid system is malfunctioning.
X
Visit a qualified specialist workshop. # The battery is no
tbeing charged.
Aw arning tone also sounds.
Possible causes are:
R faulty power electronics
R a torn poly-V-belt
R a malfunction in the electronics
X Pull ove rand stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle to prevent it from rolling away.
X Ope nthe hood.
X Check whether the poly-V-belt is torn. Vehicle
Display messages Possible causes/consequences and
M Solutions
d
Malfunction The drive system is malfunctioning. The ECO start/stop function
may not be working and the vehicle may accelerate more slowly
than usual.
X Visit a qualified specialist workshop. Display messages
33On-board computer and displays

Warning and indicator lamps in the instrument cluster
Problem Possible causes/consequences and
M Solutions
é
The yellow RBS
(recuperative
brake system)
warning lamp is
on. In addition,
there may be a
warning tone. G
Risk of accident
RBS is malfunctioning. Pedal travel may be longe rthan usual and
braking performance may be affected. The automatic engine
switch-off function may also be deactivated.
X Observe any display messages shown in the multifunction
display (Y page 31).
X Drive on carefully.
X Visit a qualified specialist workshop. $
The red brake
system warning
lamp is on. A
warning tone
also sounds. G
Risk of accident
RBS is malfunctioning. Pedal travel may be longer than usual and
braking performance may be affected.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Consult a qualified specialist workshop immediately.
X Observe the additional messages in the multifunction display
(Y page 31) (see vehicle Operator's Manual). G
Risk of accident
There is not enough brake fluid in the brake fluid reservoir.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Consult a qualified specialist workshop immediately.
X Observe the additional messages in the multifunction display
(see vehicle Operator's Manual).
Do not add brake fluid. This does not correct the malfunction. 34
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 7).Batteries
Important safety notes
G
WARNING
The electrolyte of the high-voltage battery is
poisonous and corrosive. Avoid contact with
the skin, eyes or clothing, e.g. in the even tof
an accident.
Immediately rinse electrolyte splashes off
thoroughly with plenty of clean water. Consult
a docto rimmediately.
! Exhaustive discharge caused by the
vehicle standing idle for lengthy periods
can damage the high-voltage battery.
If the vehicle is idle for lengthy periods, run
it for a few minutes once every six weeks
to charge up the high-voltage battery.
During the charging process, switch off all
electrical consumers, e.g. the automatic
climate control or the seat heating.
Yourv ehicle is equipped with two 12V
batteries and one high-voltage battery. The
high-voltage battery stores the energy for the
electric motor. The engine can be started
using the electric motor.
Have any work on the batteries carried out at
a qualified specialist workshop.
i Observe the safety information
(Y page 14) and information about the 12V battery (see the vehicle Operator's
Manual).
Installation locations of the 12V and high-
voltage batteries (Y page 10).
Consult an authorized Mercedes-BenzC enter
if you wish to leave your vehicle parked for a
long period of time. High-voltage battery
G
WARNING
Never leave the engine running in enclosed
spaces. The exhaust gases contain toxic
carbon monoxide. Breathing in exhaust fumes
is a health hazard and can lead to
unconsciousness or death.
! Charge the high-voltage battery only in
"Charging while stationary" mode. Do not
connecta ny battery chargers to the high-
voltage battery .This could damage the
vehicle’s high-voltage electrical system.
X Bring the vehicle to a stop with the engine
running.
The engine powers the electric motor. The
electric motor operates as a generator. The
high-voltage battery is being charged.
i In the "Charging when stationary"
operating mode, the high-voltage battery
can be charged to a maximum of 70%. You
can monitor the condition of charge of the
high-voltage battery in the COMAND
display and in the multifunction display
(Y page 29). Charging the 12 V battery
i Observe the safety information and
information on charging the 12 Vbattery in
the vehicle Operator's Manual. 38
BatteriesBreakdown assistance

Wheel and tire combinations
Points to remember
i For further information about wheels and tires, see the vehicle Operator’s Manual. Tires
Depending on the country, engine and wheels fitted, you rvehicle may be equipped with TIREFIT
or with MOExtended tires (tires featuring run-flat characteristics).
i The specified tire pressure is printed in yellow on the emergency spare wheel.
Summer tires R18
Tires Alloy wheels
BA: 245/40 R18 97 Y XL
1 FA: 8.5 J x 18 H2
Wheel offset: 1.89 in (48 mm)
FA: 245/40 R18 97 Y XL
1
RA: 265/35 R18 97 Y XL 1 FA: 8.5 J x 18 H2
Wheel offset: 1.89 in (48 mm)
RA: 9.0 J x 18 H2
Wheel offset: 2.13 in (54 mm)
All-weather tires
R17
Tires Alloy wheels
BA: 245/45 R17 99 H XL M+S
1 BA: 8.0 J x 17 H2
Wheel offset: 1.89 in (48 mm)
BA: 245/45 R17 95 H XL
M+SMOExtended
2 BA: 8.0 J x 17 H2
Wheel offset: 1.89 in (48 mm)
BA: 245/45 R17 99 H XL M+S
1 BA: 8.5 J x 17 H2
Wheel offset: 1.89 in (48 mm)
BA: 245/45 R17 95 H XL
M+SMOExtended
2 BA: 8.5 J x 17 H2
Wheel offset: 1.89 in (48 mm)
1
Canada only.
2 MOExtended tires (tires with run-flat properties). Wheel and tire combinations
43Wheels and tires

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 7).Information on the technical data
i The data stated here specifically refers to
a vehicle with standard equipment .Consult
an authorized Mercedes-Benz Center for
the data for all vehicle variants and trim
levels. Service products and filling
capacities Engine oil
Points to remember Only engine oils approved by Mercedes-Benz
may be used in Mercedes-Benz engines (for
further information see the vehicle
Operator's Manual).
Model Engine
model MB
Approval
E 400 HYBRID
276 229.5
Filling capacities
The following values refer to an oil change
including the oil filter.
Engine with oil filter
Capacity
6.9 US qt (6.5 l) Climate control system refrigerant
Important safety notes !
Only the refrigerant R-134a and the PAG
oil approved by Mercedes-Benz may be
used. The approved PAG oil may not be
mixed with any other PAG oil that is not
approved for R-134a refrigerant.
Otherwise, the climate control system may
be damaged.
Service work, such as topping-up refrigerant
or replacing components, may only be carried
out by a qualified specialist workshop. All
applicable regulations must be adhered to,
SAE standard J639 included.
Always have work on the climate control
system carried out at a qualified specialist
workshop.
Refrigerant instruction label Example: refrigerant instruction label
:
Warning symbol
; Refrigerant filling capacity
= Applicable SAE standards
? PAG oil part number
A Type of refrigerant
Warning symbols :indicate:
R possible dangers
R that it is necessary to have maintenance
work carried out at a qualified specialist
workshop 46
Service products and filling capacitiesTechnical data