jump start MERCEDES-BENZ B-Class ELECTRIC 2016 W246 Owner's Manual

Automatic headlamp mode.............. 100
Automatic transmission
Display message ............................ 225
B
Backup lamp
Changing bulbs .............................. 107
Display message ............................ 216
Bag hook ............................................ 247
BAS (Brake Assist System) .................63
Battery (SmartKey)
Checking .......................................... 75
Important safety notes .................... 75
Replacing ......................................... 75
Battery (vehicle)
Charging ........................................ 289
Display message ............................ 218
Important safety notes .................. 287
Jump starting ................................. 292
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 194
Display message ............................ 220
Notes/function .............................. 177
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 208
Notes ............................................. 335
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 215
Brake system
Driving safety systems ..................... 68
Brakes
ABS .................................................. 63
Adaptive Brake Assist ...................... 65
BAS .................................................. 63
Brake fluid (notes) ......................... 335
Display message ............................ 201
EBD .................................................. 68
Hill start assist ............................... 134
HOLD function ............................... 163 Important safety notes .................. 158
Maintenance .................................. 159
Parking brake ................................ 155
Riding tips ...................................... 158
Warning lamp ................................. 231
Breakdown
Towing away .................................. 294
Where will I find...? ........................ 282
see Flat tire
Brightness control (instrument
cluster lighting) ................................... 31
Buttons on the steering wheel ......... 184
C
California
Important notice for retail cus-
tomers and lessees .......................... 22
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
Car wash ........................................ 274
Carpets .......................................... 280
Display ........................................... 278
Exterior lights ................................ 277
Gear or selector lever .................... 278
Interior ........................................... 278
Matte finish ................................... 276
Notes ............................................. 273
Paint .............................................. 275
Plastic trim .................................... 278
Power washer ................................ 275
Rear view camera .......................... 278
Roof lining ...................................... 280
Seat belt ........................................ 279
Seat cover ..................................... 279
Sensors ......................................... 277
Steering wheel ............................... 278
Trim pieces .................................... 278
Washing by hand ........................... 274
Wheels ........................................... 276
Windows ........................................ 276
Wiper blades .................................. 277
Wooden trim .................................. 278
Cargo compartment cover
Important safety notes .................. 248
Index5

Displaying electrical consumption
(on-board computer).........................188
Displaying energy consumption
(on-board computer) ......................... 188
Distance recorder .............................187
Distance warning (warning lamp) .... 239
Distance warning function
Function/notes ................................ 64
Warning lamp ................................. 239
Doors
Automatic locking (on-board com-
puter) ............................................. 198
Automatic locking (switch) .............. .80
Central locking/unlocking
(SmartKey) ...................................... .72
Control panel .................................. .37
Display message ............................ 226
Emergency locking ........................... 81
Emergency unlocking ....................... 80
Important safety notes .................... 79
Opening (from inside) ...................... 79
Drinking and driving ......................... 157
Drive system
Jump-starting ................................. 292
Starting with the SmartKey ............ 133
Starting with the Start/Stop but-
ton ................................................. 133
Switching off .................................. 154
Driver's door
see Doors
Driving abroad
Mercedes-Benz Service ................. 273
Driving on flooded roads .................. 161
Driving safety systems
ABS (Anti-lock Braking System) ....... 63
ADAPTIVE BRAKE ............................. 68
Adaptive Brake Assist ...................... 65
BAS (Brake Assist System) .............. 63
COLLISION PREVENTION ASSIST
PLUS ................................................ 63
Distance warning function ............... 64
EBD (electronic brake force distri-
bution) ............................................. 68
ESP
®(Electronic Stability Pro-
gram) ............................................... 66
Important safety information ........... 62
Overview .......................................... 62 STEER CONTROL ............................. 68
Driving systems
Active Parking Assist ..................... 168
ATTENTION ASSIST ........................ 176
Blind Spot Assist ............................ 177
Cruise control ................................ 162
Display message ............................ 220
HOLD function ............................... 163
PARKTRONIC ................................. 165
Rear view camera .......................... 172
Driving tips
Brakes ........................................... 158
Break-in period .............................. 130
Checking brake lining thickness .... 160
Downhill gradient ........................... 158
Drinking and driving ....................... 157
Driving in winter ............................. 161
Driving on flooded roads ................ 161
Driving on wet roads ...................... 161
Energy ........................................... 157
General .......................................... 157
Hydroplaning ................................. 161
Icy road surfaces ........................... 161
Limited braking efficiency on sal-
ted roads ....................................... 159
Snow chains .................................. 305
Wet road surface ........................... 159
DVD video
Operating (on-board computer) ..... 191
E
E‑CELL display ................................... 183
EBD (electronic brake force distri-
bution)
Display message ............................ 205
Function/notes ................................ 68
ECO display
Function/notes ............................. 157
On-board computer ....................... 187
Electric motor number ...................... 334
Electrical energy generated
(COMAND) .......................................... 144
Electronic Stability Program
see ESP
®(Electronic Stability Program)
Emergency
Automatic measures after an acci-
dent ................................................. 56
8Index

ProblemPossible causes/consequences andMSolutions
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of
the SmartKey.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote
control function:
XUnlock (Ypage 80) or lock (Ypage 81) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
The drive system can-
not be started using the
SmartKey.the on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the drive system again.
If this does not work:
XCheck the 12 V battery and charge it if necessary (Ypage 289).
or
XCheck the high-voltage battery and charge it if necessary
(
Ypage 141).
or
XJump-start the vehicle (Ypage 292).
or
XConsult a qualified specialist workshop.
The drive system can-
not be started using the
Start/Stop button. The
SmartKey is in the vehi-
cle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 75) and replace it if nec-
essary (
Ypage 75).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
78SmartKey
Opening and closing

Useful information............................282
Where will I find...? ...........................282
Flat tire .............................................. 282
Batteries ............................................ 287
Jump-starting .................................... 292
Towing ............................................... 294
Fuses .................................................. 298
281
Breakdown assistance

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 (
Ypage 63) and (Ypage 66).
GWARNING
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-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. A build-
up of electrostatic charge can be caused, for
example:
Rby wearing clothing made from synthetic
fibers
Rdue to friction between clothing and seats
Rif you push or pull the battery across the
carpet or other synthetic materials
Rif you wipe the battery with a cloth
GWARNING
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.
RMake sure that the positive terminal of a
connected battery does not come into con- tact with vehicle parts.
RNever place metal objects or tools on a bat-
tery.
RIt is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting a battery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
RIt is particularly important to observe the
described order when connecting and dis-
connecting the jumper cables.
RNever connect or disconnect the battery
terminals while the engine is running.
GWARNING
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 with
plenty of clean water and seek medical atten-
tion.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately and recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
!Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the Main-
tenance Booklet or contact a qualified spe-
cialist workshop for more information.
Comply with safety precautions and take pro-
tective measures when handling batteries.
288Batteries
Breakdown assistance

Risk of explosion.
Fire, open flames and smoking are
prohibited when handlingthe bat-
tery. Avoid creating sparks.
Battery acid is caustic. Avoid con-
tact with skin, eyes or clothing.
Wear suitable protective clothing,
especially gloves, apron and face-
guard.
Rinse any acid spills immediately
with clear water. Contac taphysi-
cian if necessary.
Wear eye protection.
Keep children away.
Observe this Operator's Manual.
Fo r safety reasons, Mercedes-Benz recom-
mends that you only use batteries which have
been tested and approved for your vehicle by
Mercedes-Benz. These batteries provide
increased impact protection to preven t vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event of
an accident.
In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In this case, have the battery discon-
nected at a qualified specialist workshop. You
can also charge the battery withacharger
recommended by Mercedes-Benz. Contac ta
qualified specialist workshop for further infor- mation. Have
the battery condition of charge checked
more frequently if you use the vehicle mainly
for short trips or if you leave it standing idle
for a lengthy period. Consult a qualified spe-
cialist workshop if you wish to leave your
vehicle parked for a long period of time.
Only replace a battery withabattery that has
been recommended by Mercedes-Benz.
Remove th eSm artKe
y if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy,
thus conservin g battery power.
Afte r an interruption to the power supply, e.g.
due to a discharged battery, you must reset
th e clock using Audio 20 or COMAND. You
can find further information in the separate
operating instructions.
Charging the 12 ‑volt battery
GWARNING
During chargin g and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do no t lean overabattery.
GWARNING
Battery aci d is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do
no t inhale any battery gases. Do not lean over
th e battery. Keep children away from batter-
ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-
tion .
GWARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases
can escape from the battery. There is a risk of
an explosion.
Batteries289
Breakdown assistance
Z

Allow the frozen battery to thaw out before
charging it or jump-starting.
!Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
!Onlycharge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment (
Ypage 292).
XOpen the hood.
XConnect the battery charger to the positive terminal and ground point in the same
order as when connecting the donor bat-
tery in the jump-starting procedure
(
Ypage 292).
If the indicator/warning lamps do not light up
at low temperatures, it is very likely that the
discharged battery has frozen. 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, particu-
larly at low temperatures. Have the thawed-
out battery checked at a qualified specialist
workshop.
Only charge the installed battery with a bat-
tery charger which has been tested and
approved by Mercedes-Benz. A battery
charger unit specially adapted for Mercedes-
Benz vehicles 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 informa-
tion and availability. Read the battery charg-
er's ope rating instructions before charging
the battery.
High-voltage battery – important
safety notes
GDANGER
The vehicle's high-voltage electrical system is under high voltage. If you modify components
in the vehicle's high-voltage electrical system
or touch damaged components, you may be
electrocuted. The components in the vehi-
cle's high-voltage electrical system may be
damaged in an accident, although the damage
is not visible. There is a risk of fatal injury.
Following an accident, do not touch any high-
voltage components and never modify the
vehicle's high-voltage electrical system. Have
the vehicle towed away after an accident and
the vehicle's high-voltage electrical system
checked by a qualified specialist workshop.
GWARNING
In the event of a vehicle fire, the internal pres- sure of the high-voltage battery can exceed a
critical value. In this case flammable gas
escapes through a ventilation valve on the
underbody. The gas can ignite. There is a risk
of injury.
Leave the danger zone immediately. Secure
the danger area at a suitable distance, whilst
observing legal requirements.
The vehicle's high voltage electrical system is
under high voltage.
RDo not handle high-voltage components orthe orange cables of the vehicle's high-volt-
age electrical system.
RDo not touch high-voltage components or
the orange cables of the high-voltage elec-
trical system when a vehicle has been
involved in a crash.
RDo not touch any damaged components or
the damaged orange cables of the vehicle's
high-voltage electrical system.
RDo not remove the covers of the high-volt-
age electrical system components that are
marked with a warning sticker.
Do not leave the vehicle parked for longer
than 14 days with a high-voltage battery con- dition of charge below 20%.
You can check the condition of charge in the
charge level display (
Ypage 184).
If you park the vehicle and leave it stationary
for longer periods, connect it to a power sup-
ply.
290Batteries
Breakdown assistance

Jump-starting
For the jump-starting procedure, use only the jump-starting connection point, consisting of a
positive terminal and a ground point, in the engine compartment.
GWARNING
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 batteries. Wash away battery acid immediately with plenty of
clean water and seek medical attention.
GWARNING
During charging and jump-starting, explosive gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating sparks and smoking. Ensure there is sufficient ven-
tilation while charging and jump-starting. Do not lean over a battery.
GWARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or sparks
are created, the hydrogen gas can ignite. There is a risk of an explosion.
RMake sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
RNever place metal objects or tools on a battery.
RIt is important that you observe the described order of the battery terminals when connecting
and disconnecting a battery.
RWhen jump-starting, make sure that the battery poles with identical polarity are connected.
RIt is particularly important to observe the described order when connecting and disconnecting
the jumper cables.
RNever connect or disconnect the battery terminals while the engine is running.
GWARNING
A discharged battery can freeze at temperatures below freezing point. When jump-starting 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.
!Avoid repeated and lengthy starting attempts.
Do not use a rapid-charging device to start the engine.
If the indicator/warning lamps do not light up at low temperatures, it is very likely that the
discharged battery has frozen. 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. Have the thawed-out
battery checked at a qualified specialist workshop.
If the 12 V battery is discharged, or after the vehicle has been jump-started, the Service
RequiredDoNotShiftGearsVisitDealermessage appears. There is a malfunction in
the on-board voltage. Visit a qualified specialist workshop immediately.
292Jump-starting
Breakdown assistance

The drive system cannot be started if the 12 V battery is discharged. This is not dependent on
whether the high-voltage battery is charged or not. The vehicle cannot be jump-started if the
high-voltage battery is discharged. The high-voltage battery must be charged first.
The drive system can be started using another vehicle.
ROnly use batteries with an equal nominal voltage (12 volts).
RMake sure that the battery of the donor vehicle does not have a significantly lower capacitythan the discharged battery.
RUse jumper cables with a sufficient cross-section and insulated terminal clamps from a
qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.
RMake sure that the two vehicles do not touch.
RRoute the jumper cables so that they cannot be caught by rotating components in the engine
compartment.
RDo not disconnect the discharged battery from the vehicle's electrical system.
XSwitch off the engine of both vehicles.
XShift the transmission to position P.
XSwitch off all electrical consumers.
XRemove battery cover:.
XConnect positive terminal ;on the vehicle with the flat battery to positive terminal =of the
donor vehicle using the red jumper cable. Begin with the flat battery.
XConnect negative terminal ?of the donor vehicle to negative terminal Aof the vehicle with
the flat battery using the black jumper cable, beginning with donor vehicle's battery B.
XStart the engine of the donor vehicle and run it at idling speed.
XSwitch on the ignition in the vehicle with the flat battery.
XIf the drive system cannot be activated immediately, wait for approximately 60 seconds
between starting attempts.
If the drive system does not start, call a breakdown service.
Jump-starting293
Breakdown assistance
Z

iJumper cables and further information regarding jump-starting can be obtained at any
qualified specialist workshop.
Towing
Important safety notes
GWARNING
Functions relevant to safety are restricted or
no longer available if:
Rthe ignition is switched off
Rthe brake system or the power steering is
malfunctioning
Rthere is a malfunction in the power supply
or the vehicle's electrical system
If your vehicle is being towed, much more
force may be necessary to steer or brake.
There is a risk of an accident.
In such cases, use a tow bar. Before towing,
make sure that the steering moves freely.
GWARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged. There
is a risk of an accident.
Always switch off the ignition when towing the
vehicle with a tow cable or a tow bar.
GWARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible
gross weight of your vehicle, the:
Rthe towing eye could detach itself
Rthe vehicle/trailer combination could roll-
over.
There is a risk of an accident.
When towing or tow-starting another vehicle,
its weight should not be greater than the per- missible gross weight of your vehicle.
Details on the permissible gross vehicle
weight of your vehicle can be found on the
vehicle identification plate (
Ypage 334).
!When COLLISION PREVENTION ASSIST
PLUS or the HOLD function is activated, the
vehicle brakes automatically in certain sit-
uations. To avoid damage to the vehicle,
deactivate these systems in the following
or similar situations:
Rwhen towing the vehicle
Rin the car wash
!Make sure that the electric parking brake
is released. If the electric parking brake is
faulty, visit a qualified specialist workshop.
Mercedes-Benz recommends that you use
an authorized Mercedes-Benz Center for
this purpose.
!Only secure the tow rope or tow bar at the
towing eyes. Otherwise, the vehicle could
be damaged.
!Observe the following points when towing
with a tow rope:
RSecure the tow rope on the same side on
both vehicles.
REnsure that the t ow cable is not longer
than legally permitted. Mark the tow
cable in the middle, e.g. with a white
cloth (30 x 30 cm). This will make other
road users aware that the vehicle is being
towed.
ROnly secure the tow cable to the towing
eye.
RObserve the brake lamps of the towing
vehicle while driving. Always maintain a
distance so that the tow rope does not
sag.
RDo not use steel cables or chains to tow
your vehicle. You could otherwise dam-
age the vehicle.
!Do not use the towing eyes for recovery
purposes as this could damage the vehicle. If in doubt, recover the vehicle with a crane.
294Towing
Breakdown assistance