2017 MERCEDES-BENZ B-Class key

Electric parking brake
General notes G
WARNING
If you leave children unsupervised in the vehi- cle, they could set it in motion by, for example:
R release the parking brake.
R shift the transmission out of park position
P.
R start the vehicle's drive system.
They could also operate the vehicle's equip-
ment. 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 unsupervised in the vehicle.
The function of the electric parking brake and
the parking lock is dependent on the on-board
voltage. If the on-board voltage is low or if there is a malfunction in the system:
R it may not be possible to apply the released
parking brake
R it may no longer be possible to shift the trans-
mission to position P
X If this is the case, only park the vehicle on
level ground and secure it to prevent it rolling away.
X Shift the transmission to position P.
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is a malfunction in the system. Contact a
qualified specialist workshop.
The electric parking brake carries out a function check at regular intervals when the drive system
is switched off. The sounds that can be heard
while this is occurring are normal. Applying or releasing manually X
To engage: push handle 0043.
When the electric parking brake is applied,
the red 0049(USA only) or 0024(Canada
only) indicator lamp lights up in the instru-
ment cluster.
The electric parking brake can also be applied when the SmartKey is removed.
X To release: pull handle0043.
The red 0049(USA only) or 0024(Canada
only) indicator lamp in the instrument cluster
goes out.
The electric parking brake can only be
released:
R when the SmartKey is in position 1or 2in
the ignition lock (Y page 109) or
R if the ignition was switched on using the
Start/Stop button
Applying automatically When the vehicle's HOLD function is holding the
vehicle at a standstill, the electric parking brake is engaged automatically.
In addition, at least one of the following condi-
tions must be fulfilled:
R the drive system is switched off.
R the driver is not wearing a seat belt and the
driver's door is opened
R there is a system malfunction
R the power supply is insufficient
R the vehicle is stationary for a lengthy period
The red 0049(USA only) or 0024(Canada only)
indicator lamp in the instrument cluster lights
up. 130
ParkingDriving and parking

Wet roads
If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first
time. This may also occur after the vehicle has
been washed or driven through deep water.
You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance.
R In order to prevent any salt build-up, apply the
brakes occasionally while paying attention to
the traffic conditions.
R Carefully depress the brake pedal and the
beginning and end of a journey.
R Maintain a greater distance to the vehicle
ahead.
Servicing the brakes !
The brake fluid level may be too low, if:
R if the red brake warning lamp lights up in
the instrument cluster and
R you hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
! A function or performance test should only
be carried out on a 2-axle dynamometer. If
you wish to operate the vehicle on such a
dynamometer, please consult a qualified spe- cialist workshop in advance. You could oth-
erwise damage the drive train or the brake
system. !
As the ESP ®
system operates automatically,
the engine and the ignition must be switched
off (the SmartKey must be in position 0or 1in
the ignition lock) if:
R the electric parking brake is tested on a
brake dynamometer (for a maximum of
ten seconds)
R the vehicle is towed with the front axle
raised.
Braking triggered automatically by ESP ®
may
seriously damage the brake system.
All checks and maintenance work on the brake
system must be carried out at a qualified spe-
cialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the functional- ity of your brakes at regular intervals.
You can find a description of Brake Assist (BAS)
on (Y page 59).
Mercedes-Benz recommends that you only have brake pads/linings installed on your vehicle
which have been approved for Mercedes-Benz
vehicles or which correspond to an equivalent
quality standard. Brake pads/linings which havenot been approved for Mercedes-Benz vehicles
or which are not of an equivalent quality could
affect your vehicle's operating safety.
Mercedes-Benz recommends that you only use
brake fluid that has been specially approved for
your vehicle by Mercedes-Benz, or which corre- sponds to an equivalent quality standard. Brakefluid which has not been approved for
Mercedes-Benz vehicles or which is not of an
equivalent quality could affect your vehicle's
operating safety.
Checking brake lining thickness You can measure the break pad/lining thick-
ness using a test gage. Color-coding (green or
red) on the test gage allows you to determine
whether the brake pad/lining thickness is still
sufficient. The test gage is in the vehicle docu-
ment wallet in the glove box. 134
Driving tipsDriving and parking

This indicates that you have now reached the
minimum distance.
Deactivating or activating Parking
Assist PARKTRONIC 0043
Indicator lamp
0044 Deactivates or activates Parking Assist
PARKTRONIC If indicator lamp
0043is lit, Parking Assist
PARKTRONIC is deactivated.
i Parking Assist PARKTRONIC is automati-
cally activated when you turn the SmartKey to
position 2in the ignition lock.
Problems with Parking Assist PARKTRONIC Problem
Possible causes/consequences and
0050 0050Solutions Only the red segments in
the Parking Assist
PARKTRONIC warning
displays are lit. You also
hear a warning tone for
approximately two sec-
onds.
Parking Assist
PARKTRONIC is then
deactivated and the indi-
cator lamp on the
PARKTRONIC button
lights up. Parking Assist PARKTRONIC has malfunctioned and has been deacti-
vated.
X If problems persist, have Parking Assist PARKTRONIC checked at a
qualified specialist workshop. Only the red segments in
the Parking Assist
PARKTRONIC warning
displays are lit. Parking
Assist PARKTRONIC is
then deactivated. The Parking Assist PARKTRONIC sensors are dirty or there is inter-
ference.
X Clean the Parking Assist PARKTRONIC sensors (Y page 237).
X Switch the ignition back on. The problem may be caused by an external source of radio or ultra-
sound waves.
X Check to see if Parking Assist PARKTRONIC works at a different
location. Driving systems
141Driving and parking Z

Activating/deactivating the rear view
camera X
To activate: make sure that the SmartKey is
in position 2in the ignition lock.
X Make sure that the Activation by R gear
Activation by R gear
function is selected in the multimedia system; see the Digital Operator's Manual.
X Engage reverse gear.
The area behind the vehicle is shown with
guide lines in the multimedia system display.
The image from the rear view camera is avail-
able throughout the maneuvering process.
To deactivate: the rear view camera deacti-
vates if you shift the transmission to Por after
driving forwards a short distance.
Messages in the multimedia system dis- play The rear view camera may show a distorted view
of obstacles, show them incorrectly or not at all.The rear view camera does not show objects in
the following positions:
R very close to the rear bumper
R under the rear bumper
R in the area immediately above the tailgate
handle
! Objects not at ground level may appear to
be further away than they actually are, e.g.:
R the bumper of a parked vehicle
R the drawbar of a trailer
R the ball coupling of a trailer tow hitch
R the rear section of an HGV
R a slanted post
Use the guidelines only for orientation.
Approach objects no further than the bottom- most guideline. 0043
Yellow guide line at a distance of approx-
imately 13 ft (4.0 m) from the rear of the
vehicle
0044 White guide line without turning the steering
wheel, vehicle width including the exterior
mirrors (static)
0087 Yellow guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
0085 Yellow lane marking of the tires at current
steering wheel angle (dynamic) 0083
Yellow guide line at a distance of approx-
imately 3 ft (1.0 m) from the rear of the vehi-
cle
0084 Vehicle center axle (marker assistance)
006B Bumper
006C Red guide line at a distance of approximately
12 in (0.30 m) from the rear of the vehicle 146
Driving systemsDriving an
d parking

case if the vehicles are driving on the inner side
of their lane.
Due to the nature of the system:
R warnings may be issued in error when driving
close to crash barriers or similar solid lane
borders.
R warnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.
Warning display 0043
Warning display
Blind Spot Assist is not active at speeds below
approximately 20 mph (30 km/h). Vehicles in
the monitoring range are then not indicated.
When Blind Spot Assist is activated, indicator
lamp 0043in the exterior mirrors lights up yellow
at speeds of up to 20 mph (30 km/h). At speeds
above 20 mph (30 km/h), the indicator lamp
goes out and Blind Spot Assist is operational.
If a vehicle is detected within the blind spot
monitoring range at speeds above 20 mph
(30 km/h), warning lamp 0043on the correspond-
ing side lights up red. This warning is always
emitted when a vehicle enters the blind spot
monitoring range from behind or from the side.
When you overtake a vehicle, the warning only
occurs if the difference in speed is less than
7 mph (12 km/h).
The yellow indicator lamp goes out if reverse
gear is engaged. In this event, Blind Spot Assist is no longer active.
The brightness of the indicator/warning lamps
is adjusted automatically according to the ambi-
ent light. Collision warning If a vehicle is detected in the monitoring range of
Blind Spot Assist and you switch on the corre-
sponding turn signal, a double warning tone
sounds. Red warning lamp 0043flashes. If the turn
signal remains on, vehicles detected are indica-
ted by the flashing of red warning lamp 0043.
There are no further warning tones.
Switching on Blind Spot Assist X
Make sure that Blind Spot Assist is activated
in the on-board computer (Y page 163).
X Turn the SmartKey to position 2in the ignition
lock.
Warning lamps 0043in the exterior mirrors light
up red for approximately 1.5 seconds and
then turn yellow. Driving systems
151Driving and parking Z

i
The
Energy Flow
Energy Flow menu can also be dis-
played in the COMAND/Audio display.
The condition of charge of the high-voltage bat- tery has dropped into the reserve range if the
drive system is running and:
R the Drive Battery Reserve Level
Drive Battery Reserve Level mes-
sage appears in the display
R the indicator lamp in the instrument cluster
lights up
Charge the high-voltage battery from a condi-
tion of charge of less than 20% at:
R an electrical outlet
R a charging station
The braking performance of the electric motor
using recuperative braking is, in some operating
modes, either reduced or not effective:
R when the condition of charge of the high-volt-
age battery increases
R if the high-voltage battery is not yet at a nor-
mal operating temperature
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, counteract the reduced regenerative braking effect by applying the
brake yourself. Operating the on-board computer
Overview 0043
Multifunction display
0044 Vehicles with Audio 20: switches on voice-
operated control for navigation (see manu-
facturer's operating instructions)
Vehicles with COMAND: switches on the
Voice Control System (see the separate
operating instructions)
0087 Right control panel
0085 Left control panel
0083 Back button
X To activate the on-board computer: turn
the SmartKey to position 1in the ignition lock.
You can control the multifunction display and
the settings in the on-board computer using the buttons on the multifunction steering wheel. 154
Displays and operationOn-board computer and displays

Selecting the departure time
X Press the 0059or0065 button on the steering
wheel to select the Settings
Settings menu.
X Press 0063or0064 on the steering wheel to
select the E‑CELL
E‑CELLmenu.
X Press 0063or0064 to select Depart.
Depart. Time
Time.
X Press 0076to confirm.
X Press the 0064or0063 button to select one
of the three departure times or Timer
TimerOff
Off(no
timer active).
X Press 0076to confirm.
Charging with RANGE PLUS
If you have engaged Pand the charging cable is
connected, the on-board computer displays:
R the expected charge time of the high-voltage
battery or
R the RANGE PLUS condition of charge for the
departure time set
RANGE PLUS charges when:
R you have activated RANGE PLUS via the cen-
ter console prior to charging and
R the high-voltage battery is fully charged
If charging is not complete by departure time,
the maximum range will notbe available. Example:
R Set departure time: 6:41 a.m.
R End time for standard high-voltage battery
charging: 6:00 a.m.
R RANGE PLUS condition of charge at
6:41 a.m.: half of the additional range
R The maximum additional range is decreased
by 50 percent.
Pre-entry climate control at time of depar- ture
If you activate the "Rem. Climate Control at
departure time" function, the vehicle interior is
heated or cooled prior to a desired departure
time. i
To heat or cool the vehicle interior for a
desired departure time, the high-voltage bat-
tery must be sufficiently charged. Activate the
climate control function primarily when the
high-voltage battery is being charged. You
must also set a departure time using the E-
E-
CELL
CELL submenu (Y page 163).
Switching "Pre-entry climate control at
departure time" on/off
X Press the 0059or0065 button on the steering
wheel to select the Sett. Sett.menu.
X Use 0063 or0064 to select the E-CELL
E-CELLsub-
menu.
X Press 0076to confirm.
X Press 0063or0064 to select Pre-Entry
Pre-Entry
Climate Ctrl. at Departure Time:
Climate Ctrl. at Departure Time:.
X Press 0076to activate or deactivate.
The vehicle interior will then be heated or
cooled prior to the predefined departure time.
If a departure time is selected, the yellow
indicator lamp lights up on the auxiliary heat-
ing button.
You can use the on-board computer to specify
up to three departure times in the E-CELL E-CELLsub-
menu. One of the specified departure times may
be preselected (Y page 163).
Pre-entry climate control (via SmartKey)
Pre-entry climate control via the key is switched on temporarily when the vehicle is unlocked
using the key. In order to switch on pre-entry
climate control via the SmartKey, the function
has to be activated using the on-board com-
puter.
Activating/deactivating pre-entry climate
control via the key
X Press the 0059or0065 button on the steering
wheel to select the Sett. Sett.menu.
X Use 0063 or0064 to select the E-CELL
E-CELL sub-
menu.
X Press 0076to confirm.
X Press 0063or0064 to select Pre-Entry
Pre-Entry
Climate Ctrl. (Via Key):
Climate Ctrl. (Via Key):.
X Press 0076to activate or deactivate.
If pre-entry climate control via key is activa-
ted, pre-entry climate control using the key is switched on temporarily when you unlock thevehicle. 164
Menus and submenusOn-board computer and displays

Display messages
Possible causes/consequences and
0050
0050Solutions 0049(USA
only)0024(Canada only)
Turn On the Igni‐ Turn On the Igni‐
tion tion to
toRelease
Release the
the
Parking Brake
Parking Brake The red
0049(USA only) or 0024(Canada only) indicator lamp lights
up.
You attempted to release the electric parking brake while the ignition
was switched off.
X SmartKey: turn the SmartKey to position 1in the ignition lock.
X KEYLESS-GO: switch on the ignition. 0049(USA
only)0024(Canada only)
Please Please Release
Release Park‐
Park‐
ing Brake
ing Brake The red
0049(USA only) or 0024(Canada only) indicator lamp flashes
and a warning tone sounds. A condition for automatic release of the
electric parking brake is not fulfilled (Y page 130).
You are driving with the electric parking brake applied.
X Release the electric parking brake manually. The red
0049(USA only) or 0024(Canada only) indicator lamp flashes
and a warning tone sounds.
You are using the electric parking brake for emergency braking
(Y page 130). 0049(USA
only)0024(Canada only)
Parking Brake See Parking Brake See
Operator's Manual Operator's Manual The yellow
0024warning lamp lights up.
The electric parking brake is malfunctioning.
To apply:
X Switch the ignition off.
X Press the electric parking brake handle for at least ten seconds.
X Shift the transmission to position P.
X Consult a qualified specialist workshop. The yellow
0024warning lamp and the red 0049(USA only) or 0024
(Canada only) indicator lamp light up.
The electric parking brake is malfunctioning.
To release:
X Switch off the ignition and turn it back on.
X Release the electric parking brake manually.
or X Release the electric parking brake automatically (Y page 130).
If the electric parking brake still cannot be released:
X Do not drive on.
X Consult a qualified specialist workshop. Display
messages
171On-board computer and displays Z