2015 MERCEDES-BENZ B-Class ELECTRIC traction control

Doors
Automatic locking (on-board com-
puter) ............................................ .198
Automatic locking (switch) .............. .80
Central locking/unlocking
(SmartKey) ...................................... .72
Control panel .................................. .36
Display message ............................ 224
Emergency locking ........................... 81
Emergency unlocking ....................... 80
Important safety note s.................... 79
Opening (from inside) ...................... 79
Drinking and driving ......................... 157
Drive system
Jump-starting ................................. 290
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 ................. 272
Driving on flooded roads .................. 161
Driving safety systems
ABS (Anti-lock Braking System) ....... 63
ADAPTIVE BRAK E............................. 68
Adaptive Brake Assist ...................... 65
BAS (Brake Assist System) .............. 63
COLLISION PREVENTION ASSIST
PLUS ................................................ 64
Distance warning function ............... 64
EBD (electronic brake force distri- bution) ............................................. 68
ESP ®
(Electronic Stability Pro-
gram) ............................................... 66
ETS (Electronic Traction System) ..... 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 ............................ 219
HOLD function ............................... 163
PARKTRONIC ................................. 165 Rear view camera .......................... 172
Driving tips
Brakes ........................................... 158
Break-in perio d.............................. 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
Energ y........................................... 157
General .......................................... 157
Hydroplaning ................................. 161
Icy road surfaces ........................... 161
Limited braking efficiency on sal-
ted roads ....................................... 159
Snow chains .................................. 303
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/note s................................ 68
ECO display
Function/note s............................. 157
On-board compute r....................... 187
Electric motor number ...................... 331
Electrical energy generated
(COMAND) .......................................... 142
Emergency
Automatic measures after an acci-
dent ................................................. 56
Emergency release
Driver's door .................................... 80
Vehicle ............................................. 80
Emergency Tensioning Devices
Activation ......................................... 54
Emergency unlocking
Tailgate ............................................ 82
Energy
Driving tip s.................................... 157
Energy flow display ........................... 1878
Index

ESP
®
(Electronic Stability Pro-
gram)
Activating/deactivating (on-
board computer) ............................ 194
Characteristics ................................ .67
Deactivating/activating (notes )....... 67
Display message ............................ 201
ETS .................................................. 66
Function/note s................................ 66
General notes .................................. 66
Important safety information ........... 66
Warning lamp ................................. 233
ETS (Electronic Traction System) ....... 66
Exhaustive discharging (high-volt-
age battery) ....................................... 288
Exterior lighting
Cleaning ......................................... 275
see Lights
Exterior mirrors
Adjusting ......................................... 94
Dipping (automatic) ......................... 95
Out of position (troubleshooting) ..... 94
Storing settings (memory func-
tion) ................................................. 97
Storing the parking position ............. 95
Eyeglasses compartment ................. 241F
Flat tire MOExtended tire s.......................... 281
Preparing the vehicle ..................... 280
TIREFIT kit ...................................... 282
Floormats ........................................... 265
Folding table ...................................... 242
Front-passenger seat
Folding the backrest forward/
back ............................................... 243
Fuses
Allocation chart ............................. 297
Before changing ............................. 296
Fuse box in the engine compart-
ment .............................................. 296
Fuse box in the front-passenger
footwell .......................................... 297
Important safety notes .................. 296 G
Garage door opener Clearing the memory ..................... 264
General notes ................................ 261
Important safety notes .................. 261
Opening/closing the garage doo r..2 64
Programming (button in the rear-
view mirror) ................................... 262
Synchronizing the rolling code ....... 262
Generated electrical energy (Audio
20) ...................................................... 142
Genuine parts ...................................... 19
Glove box .......................................... .241 H
Hazard warning lamps Display message ............................ 226
Switching on/off ........................... 102
Head restraints
Adjusting ......................................... 90
Adjusting (manually) ........................ 91
Adjusting (rear) ................................ 91
Headlamps
Fogging up ..................................... 104
see Automatic headlamp mode
Heating
see Climate control
High beam flasher ............................. 102
High voltage
see Safety notes
High-beam headlamps
Adaptive Highbeam Assist ............. 103
Changing bulb s.............................. 108
Display message ............................ 215
Switching on/of f........................... 102
High-voltage battery
Battery care ................................... 145
Charging (charging station) ............ 149
Charging (mains socket) ................ 146
Charging cable warming ................ 145
Cruise range .................................. 142
Discharged battery ........................ 141
Display message ............................ 218
Displaying energy consumption
(on-board computer) ...................... 188 Index
9

As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving condi-
tions may also cause Brake Assist to inter-
vene.
If adaptive Brake Assist is not available due to a malfunction in the radar sensor system, thebrake system remains available with full
brake boosting effect and BAS.
With the help of adaptive Brake Assist, the
distance warning signal can detect obstacles
that are in the path of your vehicle for an
extended period of time.
If adaptive Brake Assist detects a risk of col-
lision with the vehicle in front, it calculates
the braking force necessary to avoid a colli-
sion. If you apply the brakes forcefully, adap-
tive Brake Assist will automatically increase
the braking force to a level suitable for the
traffic conditions.
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will work normally again if: R you release the brake pedal.
R there is no longer any danger of a collision.
R no obstacle is detected in front of your
vehicle.
Adaptive Brake Assist is then deactivated.
If adaptive Brake Assist demands particularly
high braking force, preventative passenger
protection measures (PRE-SAFE ®
) are activa-
ted simultaneously.
Up to a speed of approximately 155 mph
(250 km/h), adaptive Brake Assist is capable
of reacting to moving objects that have
already been detected as such at least once
over the period of observation. Up to a speed of approximately 44 mph
(70 km/h), adaptive Brake Assist reacts to
stationary obstacles. ESP
®
(Electronic Stability Program)
General notes i
Observe the "Important safety notes" sec-
tion (Y page 62).
ESP ®
monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
ETS (Electronic Traction System) i
Observe the "Important safety notes" sec-
tion (Y page 62).
ETS traction control is part of ESP ®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ®
.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 62). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further driv- ing safety systems are deactivated. This
increases the risk of skidding and an accident. 66
Driving safety systemsSafety

If you deactivate ESP
®
:
R ESP ®
no longer improves driving stability.
R engine torque is no longer limited and the
drive wheels are able to spin.
The spinning of the wheels results in a cut-
ting action for better traction on loose sur-faces.
R traction control is still activated.
R ESP ®
still provides support when you
brake. EBD (electronic brake force distribu-
tion)
General information EBD monitors and controls the brake pres-
sure on the rear wheels to improve driving
stability while braking.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 62). G
WARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps (Y page 230) as well as dis-
play messages (Y page 205).ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In addi- tion to the braking function, ADAPTIVE BRAKE
also has the HOLD function (Y page 163) and
hill start assist (Y page 134). STEER CONTROL
General information STEER CONTROL helps you by transmitting a
noticeable steering force to the steering
wheel in the direction required for vehicle
stabilization.
This steering assistance is provided in partic-
ular if:
R both right wheels or both left wheels are on
a wet or slippery road surface when you
brake.
R the vehicle starts to skid.
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 62).
No steering assistance is provided from
STEER CONTROL, if: R ESP ®
is malfunctioning.
R the lighting is faulty.
If ESP ®
is malfunctioning, you will be assisted
further by the electrical power steering. Recuperative Brake System
G
WARNING
In the event of malfunctions in the Recupera- tive Brake System, the following may occur:
R the braking performance of the electric
motor may be either reduced or not effec-
tive
R brake pedal resistance may be lower than
usual
R pedal travel may be longer than usual
If you do not make an additional effort to apply
the brake yourself, the braking effect may not be sufficient. There is a risk of an accident.
In the event of this malfunction, continue to
depress the brake pedal. The brake system is
still fully functional. 68
Driving safety systemsSafety

The ECO display does not indicate the actual
fuel consumption. A fixed percentage count
in the ECO display does not indicate a fixed
consumption.
Apart from driving style, consumption is
dependent on many factors such as, e.g.:
R load
R tire pressure
R cold start
R choice of route
R electrical consumers switched on
These factors are not included in the ECO dis-
play.
The evaluation of your driving style is carried
out using the following three categories:
R Acceleration
Acceleration (evaluation of all accelera-
tion processes):
- The bar fills up: moderate acceleration,
especially at higher speeds
- The bar empties: sporty acceleration
R Constant
Constant (assessment of driving behavior
at all times)
- The bar fills up: constant speed and
avoidance of unnecessary acceleration
and deceleration
- The bar empties: fluctuations in speed
R Coasting
Coasting (assessment of all deceleration
processes)
- The bar fills up: anticipatory driving,
keeping your distance and early release
of the accelerator. The vehicle can coast
without use of the brakes.
- The bar empties: frequent braking
To achieve a higher value in the categories
Acceleration Acceleration andConstant
Constant, drive the vehi-
cle in drive program E+orE.
On long journeys at a constant speed, e.g. on
the highway, only the bar for Constant
Constantwill
change.
The ECO display summarizes the driving char- acteristics from the start of the journey to its completion. For this reason, the bars change
dynamically at the beginning of the journey.
On longer journeys, there are fewer changes. For more dynamic changes, carry out a man-
ual reset.
For further information on the ECO display,
see (Y page 187). Braking
Important safety notes G
WARNING
If you increase the recuperation level on slip- pery road surfaces, the drive wheels may lose
their traction. There is an increased danger of skidding and accidents.
Do not increase the recuperation level on slip-
pery road surfaces.
The braking performance of the electric
motor using recuperative braking is, in some
operating modes, either reduced or not effec- tive:
R when the condition of charge of the high-
voltage battery increases
R if the high-voltage battery is not yet at a
normal operating temperature
R when driving close to the maximum speed
R when the vehicle is almost stationary
R in transmission position N
R during and after ESP stability control
If you do not make an additional effort to
apply the brake yourself, the braking effect
may not be sufficient. If necessary, counter-
act the reduced regenerative braking effect
by applying the brake yourself.
Downhill gradients On long, steep gradients, you must reduce the
load on the brakes by selecting maximum
recuperation. This helps you to avoid over-
heating the brakes and wearing them out
excessively.
Recuperation allows the vehicle to be decel-
erated without placing a load on the braking
system. 158
Driving tipsDriving and parking

X
Hold test gage Avertically on brake
disc :and slide measuring pin ;onto
brake disc :.
X Check which color field ?the arrow on
measuring pin ;is pointing to.
Green: the brake pad/lining thickness is
sufficient.
Red: the brake pad/lining thickness is not
sufficient. Have the brake pads/lining
checked at a qualified specialist workshop.
To avoid an inaccurate measurement:
R make sure you position the wheels suitably
R do not put the measuring pin on a recess in
the brake disc Driving on wet roads
Hydroplaning If water has accumulated to a certain depth
on the road surface, there is a danger of
hydroplaning occurring, even if:
R
you drive at low speeds.
R the tires have adequate tread depth.
For this reason, in the event of heavy rain or in conditions in which hydroplaning may occur,
you must drive in the following manner:
R lower your speed.
R avoid ruts.
R avoid sudden steering movements.
R brake carefully.
Driving on flooded roads !
Do not drive through flooded areas.
Check the depth of any water before driving through it. Drive slowly through standing
water. Otherwise, water may enter the
vehicle interior or the engine compartment.
This can damage the electronic compo-
nents in the engine or the automatic trans- mission. Water can also be drawn in by the
engine's air suction nozzles and this can
cause engine damage. Winter driving
G
WARNING
If you increase the recuperation level on slip- pery road surfaces, the drive wheels may lose
their traction. There is an increased danger of skidding and accidents.
Do not increase the recuperation level on slip-
pery road surfaces.
At the onset of winter, have your vehicle win- terized at a qualified specialist workshop, e.g.
at an authorized Mercedes-Benz Center.
Drive particularly carefully on slippery road
surfaces. Avoid sudden acceleration, steering
and braking maneuvers. Do not use cruise
control.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the DIRECT SELECT lever to position
N.
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.
You should pay special attention to road con-
ditions when temperatures are around freez-
ing point.
For more information on driving with snow
chains, see (Y page 303).
For more information on driving with summer tires, see (Y page 302).
Observe the notes in the "Winter operation"
section (Y page 302). Driving tips
161Driving and parking Z

Driving systems
Cruise control
General notes Cruise control maintains a constant road
speed for you. It brakes automatically in order to avoid exceeding the set speed. Change into
transmission position D-
(Y page 138) on long
and steep downhill gradients. This increases
recuperation in overrun mode. This relieves
the load on the brake system and prevents
the brakes from overheating and wearing too quickly.
Use cruise control only if road and traffic con- ditions make it appropriate to maintain a
steady speed for a prolonged period. You can store any road speed above 20 mph
(30 km/ h).
The speed indicated in the speedometer may differ slightly from the speed stored.
Important safety notes If you fail to adapt your driving style, cruise
control can neither reduce the risk of an acci-
dent nor override the laws of physics. Cruise
control cannot take into account the road,
traffic and weather conditions. Cruise control is only an aid. You are responsible for the dis-
tance to the vehicle in front, for vehicle speed, for braking in good time and for staying in
your lane.
Do not use cruise control:
R in road and traffic conditions which do not
allow you to maintain a constant speed e.g.
in heavy traffic or on winding roads
R on slippery road surfaces. Braking or accel-
erating could cause the drive wheels to lose
traction and the vehicle could then skid
R when there is poor visibility, e.g. due to fog,
heavy rain or snow
If there is a change of drivers, advise the new driver of the speed stored. Cruise control lever
:
To activate or increase speed
; To activate or reduce speed
= Deactivating cruise control
? To activate at the current speed/last
stored speed
When you activate cruise control, the stored
speed is shown in the multifunction display
for five seconds.
Activation conditions To activate cruise control, all of the following
activation conditions must be fulfilled:
R the electric parking brake must be
released.
R ESP ®
must be active, but not intervening.
R the transmission must be in position D.
Storing, maintaining and calling up a
speed Storing and maintaining the current
speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
X Accelerate the vehicle to the desired
speed.
X Briefly press the cruise control lever up :
or down ?.
X Remove your foot from the accelerator
pedal.
Cruise control is activated. The vehicle
automatically maintains the stored speed. 162
Driving systemsDriving an
d parking

Display messages
Possible causes/consequences and
M
MSolutions Cruise Control
Cruise Control
Inoperative Inoperative Cruise control is malfunctioning.
A warning tone also sounds.
X Visit a qualified specialist workshop. Cruise Control Cruise Control
- - - mph - - - mph A condition for activating cruise control has not been fulfilled.
You have tried to store a speed below 20 mph
(30 km/h), for
example.
X If conditions permit, drive faster than 20 mph (30 km/ h)and
store the speed.
X Check the activation conditions for cruise control (Y page 162).Tires
Display messages
Possible causes/consequences and
M MSolutions Please Correct
Please Correct
Tire Pressure Tire Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressures at the next opportunity (Y page 307).
X If necessary, correct the tire pressure.
X Restart the tire pressure monitor (Y page 309).Check Tires
Check Tires The tire pressure in one or more tires has dropped significantly.
The wheel position is displayed in the multifunction display.
A warning tone also sounds.
G WARNING
Tire pressures that are too low pose the following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X Secure the vehicle against rolling away (Y page 153).
X Check the tires and, if necessary, follow the instructions for a
flat tire (Y page 280).
X Check the tire pressure (Y page 307).
X If necessary, correct the tire pressure. Display messages
221On-board computer and displays Z