2014 MERCEDES-BENZ E400 HYBRID ECU

H
High voltage see Safety notes
High-voltage battery
Charge level (COMAND) ................... 29
Charging .......................................... 38
Charging (on-board computer) .........29
Exhaustive discharging ....................38
General safety notes ........................15
High-voltage battery charge level
(COMAND) ............................................ 29
Hybrid system Deactivated automatically ...............15
Overview .......................................... 10
READY indicator ............................... 21 I
Indicator COMAND displa y............................. 29
High-voltage battery charg elevel
(COMAND )....................................... 29
Multifunctio ndisplay ....................... 29
Indicator lamps
see Warning and indicator lamps
Instrument cluster
Overview .......................................... 11
Power displa y.................................. 28
Internal combustion engine
Malfunction ...................................... 24
Starting ............................................ 21J
Jump-starting ....................................... 39L
Lamps see Warning and indicator lamps M
Message memory (on-board
computer) ............................................ 32
Messages see Warning and indicator lamps
Modifications to the vehicle ................. 7 O
On-board computer Message memory ............................ 32
Overview .......................................... 28
Operating mode
Boost function ................................. 26
Extended overru nmode ................... 23
Overru nmode .................................. 23
Stationary vehicle ............................ 26
Operating safety .................................... 7
Overrun mode ...................................... 23 P
Parking ................................................. 25
Program selector button ....................21
Protection of the environment ............. 7
Pulling away ......................................... 22 Q
Qualified specialist workshop .............. 7 R
RBS (Recuperative Brake System) Function/notes ................................ 15
Malfunction ...................................... 24
Warning lamp ................................... 34
READY indicator .................................. 21
Recharging statistics (COMAND) see Generated electricity
Refrigerant (air-conditioning
system)
Important safety notes ....................46
Risk of fire
see Safety notes
Roof load (maximum) ..........................47 S
Safety see Operating safety
Safety notes ......................................... 14
Service products Refrigerant (air-conditioning
system) ............................................ 46
Specialist workshop .............................. 7 Index
5

Automatic deactivation of the hybrid
system
The hybrid system is deactivated
automatically if:
R SRS (Supplemental Restrain tSystem)
activates the restraint system in an
accident
R a short circui tis detected in the hybrid
system.
R one of the hybrid system’s electrical
connections is disconnected.
This ensures that you do not come into
contact with high voltage. High-voltage battery
G
WARNING
The high-voltage battery in the hybrid system
is located on the front bulkhead in the engine
compartment on the right-hand side when
viewed in the direction of travel. If, e. g. in the
event of a vehicle fire, the internal pressure of
the high-voltage battery exceeds a certain
value, flammable gas escapes through a line
in the area of the right front wheel. This
prevents the high-voltage battery from
exploding.
Leave the danger area. If necessary, set up
the warning triangle at asuitable distance.
Observe legal requirements. Driving safety systems
ABS (Anti-lock Braking System)
Braking If ABS intervenes when braking, the yellow
÷ ESP®
indicator lamp flashes in the
instrument cluster (Y page 35). You only
feel the brake pedal pulsating in certain
situations, e.g .onslippery roads.
i Further information about ABS; (see
vehicle Operator's Manual). RBS (Recuperative Brake System)
RBS supports you when braking with an
electronically-controlled brake boost mode
and enables the recovery of kinetic energy. G
WARNING
Always have work on the RBS system, e.g.
replacemen tofbrake pads, carried out at a
qualified specialist workshop.
Certain points must be taken into account
when carrying out work on the RBS system,
e.g. for system restart.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop. G
WARNING
If RBS malfunctions, braking resistance may
be reduced and brake pedal travel may be
longer than usual. The brake system is still
fully functional .Ifnecessary, depress the
brake pedal further. Adjust your driving style
and vehicle speed accordingly.
i The first time the brake pedal is
depressed after switching on the engine,
braking resistance may be reduced and
brake pedal travel may be greater than
usual. When you release the brake pedal,
pedal travel then returns to normal.
Remember the following points about RBS
(Y page 20).
The yellow éRBS warning lamp and/or
the red $brake warning lamp light up in
the instrument cluster if RBS is
malfunctioning. Follow the instructions in the
multifunction display (Y page 31).
i Further information about the brake
system and about driving tips; (see vehicle
Operator's Manual). Driving safet
ysystems
15Safety Z

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).Points to remember
G
WARNING
When the vehicle is stationary and the green
READY indicator in the instrument cluster is
lit, this means that the engine has been
switched off automatically. All of the vehicle's
systems remain active.
If you remove your foot from the brake pedal
while in transmission position DorR, the
vehicle may pull away automatically.
There is a risk of an accident.
Exit the vehicle only if:
R both the green and yellow READY
indicators in the instrument cluster are off
R you have secured the vehicle to preven tit
from rolling away.
The hybrid syste mcombines a fuel efficient
internal combustion engine with a powerful
electric motor. The hybrid system
automatically selects the most efficient
operating mode for every driving situation.
Drive the vehicle in the usual manner.
In order to save fuel, the hybrid system
switches the engine off as often as possible,
whenever less power output is required as
you drive. The electric motor provides the
propulsion. The engine is switched on, even
while the vehicle is in motion, when a higher
power output is required. The engine is usually switched off when the vehicle is
stationary. The typical idling of conventional
engines is therefore generally absent.
For the high-consumption tasks of pulling
away and accelerating, the electric motor
assists the internal combustion engine using
the stored energy from the high-voltage
battery. This energy is also used for driving in
partially electric mode (Y
page 25), to
operate the electric refrigerant compressor
and support the 12V on-board electrical
system. In this manner, the hybrid drive
makes a crucial contribution to fuel
conservation.
Notes on driving and parking (Y page 21).
You can display the hybrid system's current
operating mode in the multifunction display
and the COMAND display (Y page 28).
In the COMAND display, you can also call up
a graphic display of the fuel consumption and
generated electricity (Y page 31). RBS
RBS (Y page 15) uses the electric motor as a
generator in overrun mode (Y page 23) and
when braking. The hybrid system converts
the kinetic energy of the vehicle into
electricity and stores it in the high-voltage
battery. It is unnecessary to additionally
charge the high-voltage battery via an
external power system. 20
Points to rememberDriving and parking

Driving
Automatic transmission
Program selector button Drive programs
X
Press program selecto rbutton :
repeatedly until the lette rfor the desired
gearshift program appears in the
multifunction display.
Common driving characteristics of the
individual drive programs:
R Boost function (Y page 26)
R Recuperation (Y page 15)
Special driving characteristic of the drive
program: E
Economy R
Electric operation mode
is used as often as
possible
R The ECO start/stop
function is available
R Noiseless start
R Overrun mode S
Sport R
Sporty driving style with
boost mode
R Electric-only operation
is not possible
R The ECO start/stop
function is not available i
For further information about the
automatic drive program, see the vehicle
Operator's Manual. Briefly in manual drive program M
Using the left steering wheel paddle shifter
you can briefly shift to manual drive program
M.T he transmission must be in position D.
Activating when driving with the electric
motor
X Pull the left-hand steering wheel paddle
shifter.
The combustion engine is switched on.
Manual drive program Mis temporarily
activated. The selected gear and Mappear
in the multifunction display.
i If drive program Mis not active, pulling on
the right-hand steering wheel paddle
shifter switches to overrun mode.
Activating when driving with the combustion
engine
X Pull the left-hand steering wheel paddle
shifter.
Manual drive program Mis temporarily
activated. The selected gear and Mappear
in the multifunction display.
Manual drive program Mis characterized by
the following: M
Manual R
Manual gear shifting
R Electric-only operation
is not possible
R The ECO start/stop
function is not available Starting the engine
G
WARNING
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, for example when
parking or when your vehicle has not been
seen by other road users.
This requires you to adopt aparticularly
anticipatory driving style, as it is necessary to
allow for the possibility that other road users
may behave erratically. Driving
21Driving and parking Z

X
Switch on the ignition.
X Start the vehicle.
READY indicator :lights up in the
multifunction display .The vehicle is ready
to drive.
X Depress the brake pedal and select a gear.
i The first time the brake pedal is
depressed, braking resistance is reduced
and brake pedal travel is greater than usual.
Noiseless start
When you start the vehicle, electric operation
mode can be used. The engine starts up when
the power required by the driver exceeds the
power currently available from the electric
motor.
Noiseless start is dependent on the outside
temperature and the operating temperature
of the hybrid system.
If the hybrid system has been started using
noiseless start, green READY indicator :
lights up in the multifunction display.
Pulling away If you are depressing the brake pedal when
shifting the transmission from
Pto Dor Rand
still see the Apply Brake to Shift from 'P' display message in the multifunction
display:
X Depress the brake pedal more firmly and
select the desired transmission position.
i For further information about pulling
away, see the vehicle Operator's Manual. ECO start/stop function Important safety notes
G
WARNING
When the vehicle is stationary and the green
READY indicator in the instrument cluster is
lit, this means that the engine has been
switched off automatically. All of the vehicle's
systems remain active.
If you remove your foot from the brake pedal
while in transmission position DorR, the
vehicle may pull away automatically.
There is a risk of an accident.
Exit the vehicle only if:
R both the green and yellow READY
indicators in the instrument cluster are off
R you have secured the vehicle to preven tit
from rolling away.
General notes
The ECO start/stop function automatically
switches off the engine at higher speeds
(Y page 23) and whe nthe vehicle comes to
a stop.
The ECO start/stop function is only available
in drive program E.
The system is operational when READY
indicator :turns green in the multifunction
display.
All vehicle systems remain active, e.g. the
automatic climate control.
Automatic engine switch-off
The engine is switched off automatically,
including when:
R the driver releases the accelerator pedal
and does not exceed a speed of 90 km/h
(140 km/h) (Y page 23) or
R the engine has reached its operating
temperature
R the driver’s seat belt is fastened and the
driver’s door is closed
R the driver only slightly depresses the
accelerator pedal
R the hood is closed and engaged properly 22
DrivingDriving and parking

R
the high-voltage battery is charged
sufficiently
R there are no malfunctions in the hybrid
system
i Yellow READY indicator :may still
appear in the multifunctio ndisplay, even if
all conditions for automatic engine switch-
off are met. Continue to maintain a speed
above 15 mph (20 km/h) until READY
indicator :turns green in the
multifunction display.
If all the conditions for automatic engine
switch-off have not been fulfilled, yellow
READY indicator :lights up. The internal
combustio nengine will not be switched off
automatically, if:
R the self-diagnosis functio nofthe engine
control unit is still active
R the temperature of the coolant or catalytic
converter is too low
R there is a malfunction in the hybrid system
R the climate control of the vehicle requires
it
R the high-voltage battery is being charged
(Y page 29)
R the vehicle has rolled back shortly
beforehand
R automatic emissions tests are running
Automatic engine start
The automatically switched-off internal
combustion engine starts automatically in
certain situations, if:
R you demand more power than the electric
motor can provide by depressing the
accelerator pedal
R the condition of charge of the high-voltage
battery has reached the lower limit
R the settings of the automatic climate
control require it, e.g. at high outside
temperatures above 86‡ (30 †) Overrun mode
The engine is switched off and disconnected
from the drive train. The electric motor
operates as a generator to produce the power
required for the auxiliary consumers and
charges the high-voltage battery.
Overrun mode is available in the speed range
below 90 mph (140 km/h).
Extended overrun mode
Overrun mode allows you to increase the
vehicle range.
When the vehicle is in overrun mode:
X
Pull the right-hand steering wheel paddle
shifter.
Recuperation is reduced so that only the
power supply for the auxiliary consumers
currently operating is covered. The high-
voltage battery is not being charged.
You can tell that recuperation is no longer
operating at full capacity by looking at the
power display for the electric motor
(Y page 28).
In this operating mode, the vehicle
decelerates less rapidly than a conventional
vehicle.
This function is deactivated again if:
R the engine starts up
R you depress the brake pedal
R you pull the left-hand steering wheel paddle
shifter Driving
23Driving and parking Z

Problems with the engine
Problem Possible causes/consequences and
M Solutions
You cannot start the
internal combustion
engine. The
multifunction display
shows no display
messages. The READY
indicator in the
multifunction display is
off. For example, the self-diagnosis is not yet complete or the hybrid
system is malfunctioning.
X
Switch off the ignition and turn it back on.
X Try to start the internal combustion engine again.
X If the internal combustion engine does not start, consult a
qualified specialist workshop. You wish to pull away
and the ECO start/stop
function does not start
the internal
combustion engine.
The READY indicator in
the multifunction
display is off. The ECO start/stop function may be malfunctioning. The warning
and indicator lamps in the instrumen
tcluster light up.
X Shift the transmission to P.
X Switch off the ignition and turn it back on.
X Start the engine. The hybrid system is malfunctioning.
X
Consult a qualified specialist workshop. Problems with RBS (Recuperative Brake System)
Problem Possible causes/consequences and
M Solutions
Braking resistance is
reduced and brake
pedal travel is longer
than usual. RBS system tes
trequired.
The first time the brake pedal is depressed after switching on the
engine, braking resistance is reduced and brake pedal travel is
greater than usual. When you release the brake pedal, pedal travel
then returns to normal. G
Risk of accident
RBS is malfunctioning.
X Observe any additional display messages in the multifunction
display ( Ypage 31) and the indicator and warning lamp
messages in the instrument cluster (Y page 34).The brake pedal
pulsates. RBS assists you when braking with an electronically-controlled
brake boosting effect.
X
Observe the notes on the ESP ®
warning lamp ( Ypage 35). 24
DrivingDriving and parking

Problem with the hybrid system
Problem Possible causes/consequences and
M Solutions
The hybrid system was
deactivated
automatically. Your vehicle has been involved in an accident.
The hybrid system remains deactivated if:
R
you cannot restart the internal combustion engine after several
seconds.
R red SRS warning lamp 6in the instrument cluster is lit.
X Consult a qualified specialist workshop. The hybrid system was
deactivated
automatically. The
multifunction display
also shows a display
message. An electrical short circuit has occurred in the hybrid system or one
of the hybrid system’s electrical connections has been
disconnected.
X Observe the additional display messages in the multifunction
display (Y page 31).
X Consult a qualified specialist workshop. Parking
G
WARNING
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, for example when
parking or when your vehicle has not been
seen by other road users.
This requires you to adopt aparticularly
anticipatory driving style, as it is necessary to
allow for the possibility that other road users
may behave erratically. G
WARNING
When the vehicle is stationary and the green
READY indicator in the instrument cluster is
lit, this means that th eengine has been
switched off automatically. All of the vehicle's
systems remai nactive.
If you remove your foot from the brake pedal
while in transmission position DorR, the
vehicle may pull away automatically.
There is a risk of an accident. Exit the vehicle only if:
R
both the green and yellow READY
indicators in the instrument cluster are off
R you have secured the vehicle to preven tit
from rolling away.
X Apply the parking brake.
The red $indicator lamp in the
instrument cluster lights up.
X Use the DIRECT SELECT lever to shift the
transmission to P.
X Switch the ignition off.
The green or yellow READY indicator in the
instrument cluster goes out.
i For further information about parking and
switching off the internal combustion
engine, see the vehicle Operator's Manual. Driving tips
Driving at optimum consumption
R Drive carefully and maintain a safe distance
from the vehicle in front.
R Avoid frequent and sudden acceleration as
well as abrupt braking. Driving tips
25Driving and parking Z