Problems with "Pre-entry climate control via SmartKey"
ProblemPossible causes/consequences andMSolutions
"Pre-entry climate con-
trol via SmartKey" can-
not be switched on or
has switched itself off.The condition of charge of the high-voltage battery is under the speci-
fied minimum condition of charge.
XStart the engine when the vehicle is at a standstill.
The engine powers the electric motor. The electric motor operates
as a generator. The high-voltage battery is being charged.
Further information on charging the high-voltage battery via:
Ra mains socket (Ypage 172)
Ra charging station (Ypage 175)
Ra wallbox (Ypage 175)
"Pre-entry climate control via SmartKey" has been started more than
twice with the engine switched off.
XSwitch on the engine and let it run for more than ten seconds.
XTry again to switch on "Pre-entry climate control via SmartKey".
Pre-entry climate control at time of
departure
Important safety notes
GWARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
General notes
The "Pre-entry climate control at departure
time" function is only available in PLUG-IN
HYBRID vehicles.
You can use the "Pre-entry climate control at
departure time" function to cool or heat the
vehicle interior if the engine is not running.
The "Pre-entry climate control at departure
time" function can be activated regardless of
whether or not the vehicle is connected to an
electric power supply. The condition of charge of
the high-voltage battery must be higher than the
specified minimum condition of charge, how-
ever.
When the vehicle is connected to an electric
power supply, priority is given to charging the
high-voltage battery to the specified minimum charge. "Pre-entry climate control at departure
time" is only activated subsequently.
The running time of the "Pre-entry climate con-
trol at departure time" function may be reduced
if:
Rthe vehicle is not connected to an electric
power supply and
Rthe high-voltage battery is not fully charged
With active "Pre-entry climate control at depar-
ture time" the condition of charge of the high-
voltage battery can be reduced, even if the
charge cable connector is connected.
When the vehicle is cooled, the following func-
tions are activated if required:
RClimate control system
RBlower
RSeat ventilation
When the vehicle is heated, the following func-
tions are activated if required:
RClimate control system
RBlower
RSeat heating
If you have activated ionization via the multime-
dia system, it is activated together with "Pre-
entry climate control".
Switch on ionization (see the separate operating
instructions).
140Operating the climate control systems
Climate control
energy and stored in the high-voltage battery.
Information on overrun mode (Ypage 253).
The high-voltage battery can be charged as fol-
lows:
Rthrough energy recuperation while the vehicle
is in motion
Rthrough the combustion engine while driving
in CHARGE operating mode (Ypage 246)
Rwith the relevant charging cable at an electri-
cal outlet while the vehicle is stationary
Rat a wallbox while the vehicle is stationary
Rat a charging station while the vehicle is sta-
tionary
The high-voltage battery can be charged in a
nominal voltage range from 100 V to 240 V.
You can view the condition of charge of the high-
voltage battery in the multifunction display. You
can find information in "PLUG-IN HYBRID oper-
ation", section "Menus and submenus" under
"Energy flow display" (
Ypage 247).
High and low outside temperatures
Low outside temperatures
At very low outside temperatures the maximum
power output of the high-voltage battery may be
reduced. The high-voltage battery is then no
longer able to provide the normal electrical
power output.
High outside temperatures
To prevent damage to the high-voltage battery
due to very high outside temperatures, the max-
imum power output of the high-voltage battery
is reduced by the vehicle.
Energy consumption and electrical
range
The maximum electrical range is generally
reduced by:
Rhigh and low outside temperatures
Roperating the climate control system
Rswitching on consumers
The battery's physical characteristics are such
that leaving the vehicle parked for long periods
at low outdoor temperatures without charging it
can lead to:
Ra reduction in battery performance
Rlonger charge times
Notes on battery care
Avoid storing or transporting the vehicle at
excessively high or low temperatures over a long
period.
If you park the vehicle and leave it stationary for
long periods:
Rcheck the condition of charge of the high-
voltage battery more often
Rconnect the vehicle to a power supply
This prevents self-discharge and damage to the high-voltage battery.
Terms of use
Please note the information on exceptions and
limitations in warranty documentation and in
the Maintenance Booklet.
Handling the charging cable and charg-
ing cable controls
Do not leave the charging cable controls
(Ypage 172) hanging loose from an electrical
outlet. Otherwise, this could result in a poor
contact with the electrical outlet and malfunc-
tions when charging the vehicle.
To ensure that the brackets within the charging
cable controls are not subjected to incorrect
loads, observe the following:
RNever lift or carry the controls by the charging
cable connector or the mains plug.
RTo transport the charging cable, the charging cable can be:
-wrapped around the controls or
-secured to the housing of the controls
Heat generated by the charging cable
and charging cable connector
Pay attention to the "Important safety notes"
(Ypage 169).
During the charging process, the charging cable
and charging cable connector may heat up.
The charging cable and the charging cable con-
nector will only heat up within the permissible
limiting values, provided that:
Rthe power supply and the charging cable are
not damaged
Rthe instructions for handling the charging
cable and controls on the charging cable are
observed
Charging the high-voltage battery171
Driving and parking
Z
If the charging cable or charging cable connec-
tor become too hot, have the mains power sup-
ply checked.
Protection device against overvoltage
!Overvoltage in the mains supply may dam-
age the vehicle. For this reason, the vehicle is equipped with a protection device against
overvoltage in the mains supply. This device
may be triggered during severe thunder-
storms, for example, and may lead to the buil-
ding's fuse being tripped and an interruption
in the power supply. These functions protect
the vehicle. After the building fuse is switched
on again, the charging process resumes auto-
matically. Following an interruption in the
power supply or tripping of the building's fuse,
it may take up to 10 minutes for charging to
resume automatically.
Switch on the building protection system again
after it has been triggered. Otherwise, the
charging process cannot be continued.
General information about the charging
procedure
Pay attention to the "Important safety notes"
(Ypage 169).
The vehicle socket is located in the rear bumper
on the right below the tail lamp.
The charge socket flap and the vehicle are cen-
trally locked or unlocked simultaneously.
Charging the high-voltage battery via
the electrical outlet
Charging cable for electrical outlets
Important safety notes
!Only use the charging cable to charge the
high-voltage battery. Do not use the charging
cable for other purposes. It may otherwise be
damaged.
The vehicle is supplied with a country-specific
charging cable for connection to a mains socket.
Only use the charging cable supplied with the
vehicle or a charging cable approved for the
vehicle.
iIf you use the supplied 12 A charging cable
to charge a high-voltage battery:
Rthe charge time increases considerably
Relectrical consumption increases consider-
ably
Where possible, charge the high-voltage bat-
tery at a charging station (
Ypage 175). Only
then can certified electrical energy consump-
tion levels be reached.
iThe charging process can vary depending on
the power supply. Therefore, always observe
the local information.
Information about charging from a wallbox
(
Ypage 175).
Information on charging at a charging station
(
Ypage 175).
Stowing the charging cable
The charging cable can be stowed and secured
in the bag provided in the cargo compartment of
the vehicle.
Controls on the charging cable
:On-board voltage indicator
;Protective and indicator system display
=Charge current indicator
?Charge current setting button
When displays :and ;on the charging cable
light up, this means the following:
Display :
Lights up
greenThe on-board voltage is con-
nected. The high-voltage bat-
tery can be charged.
Flashes redThe power supply from the
building is faulty.
172Charging the high-voltage battery
Driving and parking
Charging the high-voltage battery
from the wallbox
General notes
It is recommended that you charge your vehicle
using a wallbox or at a charging station.
Make sure that the maximum charging current is
not limited in the Settings
menu of the on-
board computer. You must select the maximum
value if charging at a wallbox or a charging sta-
tion (
Ypage 273).
Pay attention to the "Important safety notes"
(
Ypage 169).
Connecting the charging cable
XShift the transmission to position P.
XSwitch the ignition off.
XPress the charge socket flap in direction of
arrow:.
The charge socket flap swings up.
XPress fastener ;to the left.
Socket cap =is open.
XInsert the charging cable connector into vehi-
cle socket ?to the stop.
Indicator lamp Afirst flashes orange and
then green. The high-voltage battery is being charged.
If the charging cable is plugged in to the vehicle, you cannot start the engine or move the vehicle.
When the charging process begins, you can view
the charging prediction in the Settings
menu
of the on-board computer. The charging predic-
tion is either the anticipated condition of charge at the programmed departure time or the time
when the high-voltage battery will be fully
charged (
Ypage 274).
iDepending on the temperature, the fan and
battery cooling system may audibly switch on
during the charging process.
Removing the charging cable
The high-voltage battery is fully charged when:
Rthe charge level display reaches 100% in the
multifunction display (Ypage 247)
Rthe indicator lamp in the vehicle socket lights up green after unlocking or locking the vehicle
XPress and hold button Bon the charging
cable connector and remove the charging
cable connector from the vehicle socket.
XClose socket cap =.
XClose charge socket flap :.
Charging the high-voltage battery at
the charging station
Before beginning the charging process at a
charging station without communication capa-
bilities, you must first activate the station, e.g.
using an RFID card. Observe the on-site opera-
tor instructions for the charging station.
The connection for the vehicle at a charging sta-
tion is identical to the connection on a wallbox
(
Ypage 175).
Charging the high-voltage battery175
Driving and parking
Z
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) (
Ypage 170).
XPress the=or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
HYBRID PLUSsubmenu.
XConfirm by pressing aon the steering
wheel.
XPress the :or9 button to select the
Maximum Charge Current:function.
You will see the selected setting.
XPress the abutton to save the setting.
The maximum charge current values in the on-
board computer may deviate from the charg- ing cable values.
Further information on charging the high-volt-
age battery (PLUG-IN HYBRID vehicles)
(
Ypage 170).
Setting the departure time
You can climatize the vehicle interior prior to
your departure with the "Set departure time"
function. Further information on pre-entry cli-
mate control (
Ypage 140).
If you recharge the high-voltage battery, the
function also displays the charging prediction.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
HYBRID PLUSsubmenu.
XConfirm by pressing aon the steering
wheel.
XPress the :or9 button to select the
Departure Time:function.
You will see the selected setting.
XTo set no departure time: press the:or
9 button to select No Preselection
.
XPressato confirm.
If you recharge the high-voltage battery, the
multifunction display also shows the time
when the high-voltage battery will be fully
charged.
or
XTo set a departure time: press the:or
9 A
,Bor Cto select the desired preset.
XPress the abutton to confirm the selec-
tion.
XPress :or9 to set the hours.
XPress ato confirm.
XPress :or9 to set the minutes.
XPress ato confirm.
If you recharge the high-voltage battery, the
multifunction display shows the expected
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)
(
Ypage 170).
Instrument cluster submenu
Selecting the distance unit
The Display Unit Speedometer / Odome‐ter:function allows you to choose whether
certain displays appear in kilometers or miles in
the multifunction display.
XPress the =or; button on the steering
wheel to select the Sett.menu.
XPress the:or9 button to select the
Instrument Clustersubmenu.
XPress ato confirm.
XPress the :or9 button to select the
Display Unit Speedometer / Odometer
function.
You will see the selected setting: kmormiles.
XPress the abutton to save the setting.
The selected unit of measurement for distance
applies to:
RDigital speedometer in the Tripmenu
ROdometer and the trip odometer
RTrip computer
RCurrent consumption and the range
RNavigation instructions in the Navimenu
RCruise control
RDISTRONIC PLUS
RASSYST PLUS service interval display
Selecting permanent display
ThePermanent Display:function allows you
to choose whether the multifunction display
always shows the outside temperature or the
speed.
The speed display is inverse to the speedome-
ter.
274Menus and submenus
On-board computer and displays
Display messagesPossible causes/consequences andMSolutions
ServiceRequiredDoNot Shift GearsVisit Dealer
You canno tchang eth etransmission position due to amalfunction .
A warning tone also sounds.
If transmission position Dis selected:
XDrive to aqualified specialist workshop without shifting th etrans -
mission from position D.
If transmission position R,N or Pis selected:
XSecur eth evehicl eagainst rollin gaway (Ypage 178).
XNotify aqualified specialist workshop or breakdown service.
ReversingNotPossi‐bleServic eRequiredYou canno tshift int oth etransmission position Rdue to amalfunction .
The transmission position sP,N or Dcontinu eto be available.
A warning tone also sounds.
XVisit aqualified specialist workshop .
Transmission Mal‐function StopAmalfunction has occurred in th emechanical transmission compo -
nents.
A warning tone also sounds. The gearbox automatically shift sto posi-
tion N.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions.
XShift th etransmission to position P.
XSecureth evehicl eagainst rollin gaway (Ypage 178).
XNotify aqualified specialist workshop or breakdown service.
Sto pVehicl eLeaveEngineRunnin gWaitTransmission Cool‐ing
PLUG-I NHYBRID vehicles:
The transmission has overheated. Pullin gaway can be temporarily
impaire dor no tpossible.
XPull ove rand stop th evehicl esafely as soo nas possible, payin g
attention to roa dand traffic conditions. Do no tcontinu edrivin g
under any circumstances.
XWait until th edisplay message disappear sbefore pullin gaway.
Auxiliary Batter yMalfunctionThe auxiliary battery for th eautomatic transmission is no longer bein g
charged.
XVisit aqualified specialist workshop .
XUntilthen ,set th eautomatic transmission to position Pbefore you
switch off th eengine.
XBefor eleaving th evehicle, apply th eelectric parking brake.
AThe tailgat eis open .
GWARNIN G
Whe nth eengin eis running, exhaust gase scan ente rth evehicl einte-
rio rif th etailgat eis open .
There is aris kof poisoning .
XCloseth etailgate.
312Display messages
On-board computer and displays