child lock MERCEDES-BENZ B-Class ELECTRIC 2015 W246 Owner's Manual

Cargo tie down rings
.........................245
CD player/CD changer (on-board
computer) .......................................... 191
Center console
Lower section .................................. 35
Upper section .................................. 34
Central locking
Automatic locking (on-board com-
puter) ............................................. 198
Locking/unlocking (SmartKey) ....... .72
Changing bulbs
Cornering light function ................ .109
High-beam headlamps ................... 108
License plate lighting ..................... 110
Low-beam headlamps .................... 108
Parking lamps ................................ 108
Rear fog lamp ................................ 109
Reversing lamps ............................ 109
Standing lamps (front) ................... 108
Turn signals (front) ......................... 108
Charge level display .......................... 184
Charging
with RANGE PLUS .......................... 196
see Charging the high-voltage battery
Charging cable
Connecting ................................... .148
Controls ......................................... 146
Important safety notes .................. 146
Removing ....................................... 148
Storing .......................................... .146
Warming up ................................... 145
Charging the high-voltage battery
(important safety notes) ................... 140
Child
Restraint system .............................. 57
Child seat
Forward-facing restraint system ...... 61
LATCH-type (ISOFIX) child seat
anchors ............................................ 58
On the front-passenger sea t............ 60
Rearward-facing restraint system .... 60
Top Tether ....................................... 59
Child-proof locks
Important safety notes .................... 61
Rear doors ....................................... 62
Children
Special seat belt retractor ............... 57 Cigarette lighter
................................ 252
Cleaning
Mirror turn signal ........................... 275
Climate control
Automatic climate control (dual-
zone) .............................................. 117
Auxiliary climate control (on-
board computer) ............................ 196
Controlling automaticall y............... 120
Convenience opening/closing
(air-recirculation mode) ................. 123
Cooling with air dehumidification .. 118
Defrosting the window s................. 122
Defrosting the windshield .............. 121
General notes ................................ 116
Immediate pre-entry climate con-
trol ................................................. 125
Indicator lamp ................................ 120
Information about using auto-
matic climate control ..................... 117
Maximum cooling .......................... 122
Overview of systems ...................... 116
Pre-entry climate control at
departure time ............................... 125
Pre-entry climate control at time
of departure (on-board computer) .. 196 Pre-entry climate control via key ... 124
Pre-entry climate control via key
(on-board computer) ...................... 196
Problem with the rear window
defroster ........................................ 123
Problems with cooling with air
dehumidification ............................ 120
Refrigerant ..................................... 333
Refrigerant filling capacity ............. 334
Setting the air distribution ............. 120
Setting the air vents ...................... 126
Setting the airflow ......................... 121
Setting the temperature ................ 120
Switching air-recirculation mode
on/of f............................................ 123
Switching on/of f........................... 118
Switching the rear window
defroster on/of f............................ 122
Switching the ZONE function on/
off .................................................. 121
Cockpit
Overview .......................................... 30 6
Index

Displaying the range (on-board
computer) ...................................... 188
Energy consumption ...................... 142
General notes ................................ 141
Method of operation ...................... 141
Outside temperatures .................... 142
Overvoltage protection .................. 145
Problems with the charging proc-
ess ................................................ .151
Reserve, warning lamp ................... 236
Terms of use .................................. 145
High-voltage disconnect device ......... 23
Hill start assist .................................. 134
HOLD function
Activating ....................................... 164
Deactivating ................................... 164
Display message ............................ 219
Function/notes ............................ .163
Hood
Closing .......................................... .269
Display message ............................ 224
Important safety notes .................. 268
Opening ......................................... 268
Horn ...................................................... 30
Hydroplaning ..................................... 161 I
Ignition lock see Key positions
Immobilizer .......................................... 69
Indicator and warning lamps
COLLISION PREVENTION ASSIST
PLUS .............................................. 237
Indicator lamps
see Warning and indicator lamps
Instrument cluster
Overview .......................................... 31
Power displa y................................ 183
Setting s......................................... 197
Warning and indicator lamps ........... 32
Instrument cluster lighting .............. 182
Interior lighting
Control ........................................... 105
Emergency lighting ........................ 106
Overview ........................................ 105
Reading lamp ................................. 105 Internet connection
Via mobile service modul e............. 153 J
Jack Storage location ............................ 280
Using ............................................. 322 K
Key positions Start/Stop button .......................... 131
KEYLESS-GO
Convenience closing feature ............ 84
Deactivation ..................................... 73
Locking ............................................ 73
Unlocking ......................................... 73
Kickdown
Driving tip s.................................... 137
Knee bag .............................................. 48 L
Lamps see Warning and indicator lamps
LATCH-type (ISOFIX) child seat
anchors ................................................ 58
License plate lamp
Changing bulbs .............................. 110
License plate lamp (display mes-
sage) ................................................... 215
Light function, active
Display message ............................ 216
Light sensor (display message) ....... 217
Lights
Adaptive Highbeam Assist ............. 103
Automatic headlamp mode ............ 100
Cornering light function ................. 103
Fogged up headlamp s.................... 104
Hazard warning lamps ................... 102
High beam flasher .......................... 102
High-beam headlamp s................... 102
Light switch ................................... 100
Low-beam headlamp s.................... 101
Parking lamps ................................ 101
Rear fog lamp ................................ 101
Setting exterior lighting ................. 100
Standing lamps .............................. 101 10
Index

Reserve
High-voltage battery ...................... 236
Restraint system
Display messag e............................ 210
Introduction ..................................... 40
Warning lamp ................................. 236
Warning lamp (function) ................... 41
Reverse gear
Engaging ........................................ 135
Reversing feature
Side windows ................................... 83
Roadside Assistance (breakdown) .... 21
Roof carrier ........................................ 249
Roof lining and carpets (cleaning
guidelines) ......................................... 278
Roof load (maximum) ........................ 334S
Safety Children in the vehicle ..................... 56
Seat belts
Adjusting the height ......................... 44
center rear-compartment sea t......... 45
Cleaning ......................................... 278
Correct usage .................................. 44
Fastening ......................................... 44
Important safety guidelines ............. 42
Introduction ..................................... 42
Releasing ......................................... 45
Warning lamp ................................. 228
Warning lamp (function) ................... 45
Seats
Adjusting (electrically) ..................... 90
Adjusting (manually) ........................ 90
Adjusting the 4-way lumbar sup-
port .................................................. 91
Adjusting the head restraint ............ 90
Cleaning the cover ......................... 277
Correct driver's seat position ........... 88
Folding the backrest (rear com-
partment) forwards/back .............. 244
Important safety notes .................... 89
Seat heating problem ...................... 93
Storing settings (memory func-
tion) ................................................. 97
Switching seat heating on/of f......... 92
Securing cargo .................................. 245 Selector lever
Cleaning ......................................... 277
see DIRECT SELECT lever
Sensors (cleaning instructions) ....... 275
Service menu (on-board com-
puter) .................................................. 195
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 332
Coolant (engine) ............................ 332
Important safety notes .................. 331
Refrigerant (air-conditioning sys-
tem) ............................................... 333
Washer fluid ................................... 333
Setting the air distribution ............... 120
Setting the airflow ............................ 121
Setting the maximum charge cur-
rent (Control system) ........................ 197
Settings
Factory (on-board computer) ......... 199
On-board compute r....................... 195
Side impact air bag ............................. 48
Side marker lamp (display mes-
sage) ................................................... 216
Side windows
Cleaning ......................................... 274
Convenience closing feature ............ 84
Convenience opening feature .......... 84
Important safety information ........... 83
Opening/closing .............................. 84
Problem (malfunction) ..................... 86
Resetting ......................................... 85
Reversing feature ............................. 83
SmartKey
Changing the battery ....................... 75
Changing the programming ............. 74
Checking the battery ....................... 75
Convenience closing feature ............ 84
Convenience opening feature .......... 84
Display message ............................ 226
Door central locking/unlocking ....... 72
Important safety notes .................... 72
KEYLESS-GO start function .............. 74
Loss ................................................. 77
Mechanical key ................................ 74
Positions (ignition lock) ................. 131 14
Index

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment 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 special-
ist workshops (Y page 25). Panic alarm
X
To activate: press and hold the
! button :for approx. one second.
A visual and audible alarm is triggered if the alarm system is armed.
X To deactivate: press!button :
again.
or
X Insert the SmartKey into the ignition lock.
or, in vehicles with KEYLESS-GO start-func-
tion or KEYLESS ‑GO
X Press the Start/Stop button.
The SmartKey must be in the vehicle. Occupant safety
Restraint system: introduction
The restraint system reduces the risk of vehi-
cle occupants coming into contact with parts of the vehicle's interior in the event of an
accident. The restraint system can also
reduce the forces to which vehicle occupants
are subjected during an accident.
The restraint system comprises:
R Seat belt system
R Air bags
R Child restraint system
R Child seat securing systems
The components of the restraint system work
in conjunction with each other. They can only deploy their protective function if, at all times,
all vehicle occupants:
R have fastened their seat belts correctly
(Y page 44)
R have adjusted their seat and head restraint
properly (Y page 89).
As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the cor-
rect driver's seat position (Y page 88).
You also have to make sure that an air bag can inflate properly if deployed (Y page 46).
An air bag supplements a correctly worn seat
belt. As an additional safety device, the air
bag increases the level of protection for vehi-
cle occupants in the event of an accident. For example, if, in the event of an accident, the
protection offered by the seat belt is suffi-
cient, the air bags are not deployed. When an
accident occurs, only the air bags that
increase protection in that particular accident
situation are deployed. However, seat belts
and air bags generally do not protect against objects penetrating the vehicle from the out-
side.
Information on restraint system operation
can be found under "Triggering of the Emer-
gency Tensioning Devices and air bags"
(Y page 54). 40
Occupant safetySafety

For more information about children traveling
with you in the vehicle and on child restraint
systems, see "Children in the vehicle"
(Y page 56). Important safety notes
G
WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify an air bag system to
accommodate a person with disabilities, con- tact an authorized Mercedes-Benz Center for
details. USA only: for further information con- tact our Customer Assistance Center at
1-800-FOR-MERCede s (1‑800‑367 ‑6372). Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and
at regular intervals while the drive system is
running. Therefore, malfunctions can be
detected in good time.
The 6 restraint system warning lamp in
the instrument cluster lights up when the igni- tion is switched on. It goes out no later than afew seconds after the vehicle is started. The
components of the restraint system are in
operational readiness. A malfunction has occurred if the
6
restraint system warning lamp:
R does not light up after the ignition is
switched on
R does not go out after a few seconds with
the drive system running
R lights up again while the drive system is
running G
DANGER
If the restraint system is malfunctioning, indi- vidual restraint system components may be
triggered unintentionally or might not be trig-
gered at all in the event of an accident with a high rate of vehicle deceleration. This could
affect Emergency Tensioning Devices or air
bags, for example. The vehicle's high-voltage
electrical system may also not be deactivated
as intended in the event of an accident. You
could suffer an electric shock if you touch the damaged components of the vehicle's high-
voltage electrical system. This poses an
increased risk of injury or even fatal injury.
Have the restraint system checked and
repaired immediately at a qualified specialist
workshop. Immediately switch off the ignition
and remove the SmartKey from the ignition
lock after an accident. PASSENGER AIR BAG indicator lamp
PASSENGER AIR BAG OFF indicator lamp
:
and PASSENGER AIR BAG ON indicator
lamp ;are part of the Occupant Classifica-
tion System (OCS). Occupant safety
41Safety Z

The indicator lamps display the status of the
front-passenger front air bag.
R PASSENGER AIR BAG ON lights up: the
front-passenger front air bag is enabled. If,
in the event of an accident, all deployment
criteria are met, the front-passenger front
air bag is deployed.
R PASSENGER AIR BAG OFF lights up: the
front-passenger front air bag is deactiva-
ted. It will then not be deployed in the event of an accident.
Depending on the person in the front-
passenger seat, the front-passenger front air
bag must either be deactivated or enabled;
see the following points. You must make sure
of this both before and during a journey.
R Children in a child restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the
installed child restraint system, and the age and size of the child. Therefore, be sure to
observe the notes on the "Occupant Clas-
sification System (OCS)" (Y page 49) and
on "Children in the vehicle" (Y page 56).
There you will also find instructions on rear-
ward and forward-facing child restraint sys- tems on the front-passenger seat.
R All other persons: depending on the clas-
sification of the person in the front-
passenger seat, the front-passenger front
air bag is enabled or deactivated
(Y page 49). Be sure to observe the notes
on "Seat belts“ (Y page 42) and "Air bags"
(Y page 46). There you can also find infor-
mation on the correct seat position. Seat belts
Introduction Seat belts are the most effective means of
restricting the movement of vehicle occu-
pants in the event of an accident or the vehi-
cle rolling over. This reduces the risk of vehi- cle occupants coming into contact with parts
of the vehicle interior or being ejected from the vehicle. Furthermore, the seat belt helps
to keep the vehicle occupant in the best posi-
tion in relation to the air bag.
The seat belt system comprises:
R Seat belts
R Emergency Tensioning Devices for the
front seat belts and the outer seat belts in
the rear
R Seat belt force limiters for the front seat
belts and the outer seat belts in the rear
If the seat belt is pulled out of the belt outlet quickly or with a jerky movement, the belt
retractor locks. The belt strap cannot be
extracted any further.
The Emergency Tensioning Device tightens
the seat belt in an accident, pulling the belt
close against the body. However it does not
pull the vehicle occupant back in the direction
of the backrest.
The Emergency Tensioning Device does not
correct an incorrect seat position or the rout- ing of an incorrectly fastened seat belt.
When triggered, a seat belt force limiter helps
to reduce the force exerted by the seat belt on
the vehicle occupant.
The seat belt force limiters for the front seats
are synchronized with the front air bags,
which absorb part of the deceleration force.
This can reduce the force exerted on the vehi- cle occupants during an accident.
! If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle of the front-passenger seat. This may oth-
erwise lead to the triggering of the Emer-
gency Tensioning Device in the event of anaccident, which will then need to be
replaced.
Important safety notes The use of seat belts and child restraint sys-
tems is required by law in:
R all 50 states
R the U.S. territories 42
Occupant safetySafety

The shoulder section of the seat belt must
always be routed across the center of the
shoulder. Adjust the belt outlet if necessary.
X To raise: slide the belt outlet upwards.
The belt outlet will engage in various posi-
tions.
X To lower: hold belt outlet release ?and
slide belt outlet downwards.
X Let go of belt outlet release ?in the
desired position and make sure that the
belt outlet engages.
All seat belts except the driver's seat belt are equipped with a special seat belt retractor tosecurely fasten child restraint systems in the
vehicle. Further information can be found
under "Special seat belt retractor"
(Y page 57).
Seat belt for the center rear seat If the left-hand rear seat backrest is folded
down and back up again, the rear center seat
belt may lock. The seat belt can then not be
pulled out.
X To release the rear center seat belt: pull
the seat belt out approximately 1 in
(25 mm) at the belt outlet on the backrest
and then release it again.
The seat belt is retracted and released.
Releasing seat belts !
Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door, the door trim panel and the seat belt. Dam-
aged seat belts can no longer fulfill their
protective function and must be replaced.
Visit a qualified specialist workshop. X
Press release button :, hold belt
tongue ;firmly and guide it back towards
belt outlet =.
Belt warning for the driver and front
passenger The
7 seat belt warning lamp in the instru-
ment cluster is a reminder that all vehicle
occupants must wear their seat belts. It may
light up continuously or flash. In addition,
there may be a warning tone.
Regardless of whether the driver's seat belt
has already been fastened, the 7seat belt
warning lamp lights up for six seconds each
time the drive system is started. If the front
doors are closed and the driver or front-
passenger seat belt has not been fastened,
the 7 seat belt warning lamp lights up
again after the six seconds. As soon as the
driver's and front-passenger seat belts are
fastened or a front door is opened again, the
7 seat belt warning lamp goes out.
If the driver's seat belt is not fastened after
the drive system is started, an additional
warning tone will sound. The warning tone Occupant safety
45Safety Z

However, it does not protect the chest or
arms.
In the event of a side impact, the window cur-
tain air bag is deployed on the side on which
the impact occurs.
If the system determines that they can offer
additional protection to that provided by the
seat belt, a window curtain air bag may be
deployed in other accident situations
(Y page 54). Occupant Classification System
(OCS)
Introduction The Occupant Classification System (OCS)
categorizes the person in the front-passenger
seat. Depending on that result, the front-
passenger front air bag is either enabled or
deactivated.
The system does not deactivate:
R the side impact air bag
R the window curtain air bag
R the Emergency Tensioning Devices
Prerequisites To be classified correctly, the front passenger
must sit:
R with the seat belt fastened correctly
R in an almost upright position with their
back against the seat backrest
R with their feet resting on the floor, if possi-
ble
If the front passenger does not observe these
conditions, OCS may produce a false classi-
fication, e.g. because the front passenger:
R transfers their weight by supporting them-
selves on a vehicle armrest
R sits in such a way that their weight is raised
from the seat cushion
If it is absolutely necessary to install a child
restraint system on the front-passenger seat,
be sure to observe the correct positioning of the child restraint system. Never place
objects under or behind the child restraint
system, e.g. cushions. The entire base of the
child restraint system must always rest on the
seat cushion of the front-passenger seat. The
backrest of the forward-facing child restraint system must lie as flat as possible against the
backrest of the front-passenger seat.
The child restraint system must not touch the
roof or be subjected to a load by the head
restraint. Adjust the angle of the seat back-
rest and the head restraint position accord-
ingly.
Only then can OCS be guaranteed to function correctly. Always observe the child restraint
system manufacturer's installation instruc-
tions.
Operation of Occupant Classification
System (OCS) :
PASSENGER AIR BAG OFF indicator lamp
; PASSENGER AIR BAG ON indicator lamp
The indicator lamps inform you whether the
front-passenger front air bag is deactivated or
enabled.
X Press the Start/Stop button once or twice,
or turn the key to position 1or 2in the
ignition lock.
The system carries out self-diagnostics.
The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps
must light up simultaneously for approx-
imately six second s. Occu
pant safety
49Safety Z

Automatic measures after an acci-
dent
Immediately after an accident, the following
measures are implemented, depending on
the type and severity of the impact:
R the hazard warning lamps are activated
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered
R the drive system and the high-voltage elec-
trical system are switched off
R vehicles with mbrace: automatic emer-
gency call Children in the vehicle
Important safety notes
Accident statistics show that children
secured in the rear seats are safer than chil-
dren secured in the front-passenger seat. For this reason, Mercedes-Benz strongly advises
that you install a child restraint system on a
rear seat. Children are generally better pro-
tected there.
If a child younger than 12 years and under 5 ft
(1.50 m) in height is traveling in the vehicle:
R always secure the child in a child restraint
system suitable for Mercedes-Benz vehi-
cles. The child restraint system must be
appropriate to the age, weight and size of
the child
R be sure to observe the instructions and
safety notes in this section in addition to
the child restraint system manufacturer's
installation instructions
R be sure to observe the instructions and
safety notes on the "Occupant classifica-
tion system (OCS)" (Y page 49) G
WARNING
If children are left unsupervised in the vehicle, they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the transmission out of park position P
R start the vehicle's drive system.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
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. G
WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight. Pro- tect it with a blanket, for example. If the childrestraint system has been exposed to direct
sunlight, let it cool down before securing the
child in it. Never leave children unattended in the vehicle.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit- ting properly. Particular attention must be
paid to children. 56
Children in the vehicleSafety

Always comply with the manufacturer's
installation and operating instructions for the child restraint system used.
Before every trip, make sure that the LATCH-
type (ISOFIX) child restraint system is
engaged correctly in both LATCH-type (ISO-
FIX) securing rings
! When installing the child restraint system,
make sure that the seat belt for the middle seat does not get trapped. The seat belt
could otherwise be damaged. :
LATCH-type (ISOFIX) securing rings
X Install the LATCH-type (ISOFIX) child
restraint system on both LATCH-type (ISO-
FIX) securing rings :.
ISOFIX is a standardized securing system for
specially designed child restraint systems on
the rear seats. LATCH-type (ISOFIX) securing rings :for two LATCH-type (ISOFIX) child
restraint systems are installed on the left and
right rear seats.
Non-LATCH-type (ISOFIX) child seats may
also be used and can be installed using the
vehicle's seat belt system. Install the child
seat according to the manufacturer's instruc-
tions. Top Tether
Introduction Top Tether provides an additional connection
between the child restraint system secured
with a LATCH-type (ISOFIX) child seat mount
and the vehicle. This helps reduce the risk of injury even further. If the child restraint sys-
tem is equipped with a Top Tether belt, this
should always be used.
Important safety notes G
WARNING
If the rear seat backrests are not locked, they
could fold forwards in the event of an acci-
dent, heavy braking or sudden changes of
direction. As a result, child restraint systems
cannot perform their intended protective
function. Rear seat backrests that are not
locked can also cause additional injuries, e.g. in the event of an accident. This poses an
increased risk of injury or even fatal injury.
Always lock rear seat backrests after instal-
ling a Top Tether belt. Observe the lock veri-
fication indicator. Adjust the rear seat backr-
ests so that they are in an upright position.
If the rear backrest is not engaged and
locked, the red lock verification indicator will
be visible (Y page 244).
Top Tether anchorages The Top Tether anchorages are located on the
rear side of the rear seat backrests. Children in the vehicle
59Safety Z