2017 MERCEDES-BENZ B-Class brake

Warning/
indicator
lamp
0051
0051 Signal type
Possible causes/consequences and 0050 0050Solutions 00E500BB
00C6004D
0051
00C6 (USA only), 004D(Canada only): the yellow ESP ®
, ESP ®
OFF and RBS/
brake system warning lamps are lit while the drive system is running.
ESP ®
, BAS, the HOLD function and hill start assist are temporarily unavailable.
Adaptive Brake Assist may also have failed.
ATTENTION ASSIST is deactivated.
Self-diagnosis is not yet complete.
G WARNING
The braking performance of the electric motor using recuperative braking may be
either reduced or not effective. 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.
The brake system continues to function normally, but without the functions listed
above.
The braking distance in an emergency braking situation can thus increase.
If ESP ®
is not operational, ESP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
X Carefully drive a suitable distance, making slight steering movements at a speed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on: X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 00240049
0051
0049 (USA only), 0024(Canada only): the red indicator lamp for the electric
parking brake flashes or lights up and/or the yellow warning lamp for the electric
parking brake lights up.
X Observe the additional display messages in the multifunction display. 0075
0051
The red restraint system warning lamp is lit while the drive system is running.
The restraint system is malfunctioning.
G WARNING
The air bags or Emergency Tensioning Devices may either be triggered uninten-
tionally or, in the event of an accident, may not be triggered.
There is an increased risk of injury.
X Observe the additional display messages in the multifunction display.
X Drive on carefully.
X Contact a qualified specialist workshop and have the restraint system checked.
For further information about the restraint system, see (Y page 38).198
Warning and indicator lamps in the instrument clusterOn-board computer and displays

Drive system
Warning/
indicator
lamp
0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00D9
0051
The yellow battery charge warning lamp is on.
The condition of charge of the high-voltage battery has dropped into the reserve
range.
X Charge the high-voltage battery. Driving systems
Warning/
indicator
lamp 0051 0051
Signal type
Possible causes/consequences and 0050
0050Solutions 00BA
0051
The red distance warning lamp lights up while the vehicle is in motion. A warning
tone also sounds.
You are approaching a vehicle or a stationary obstacle in your line of travel at too high a speed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to brake or take
evasive action.
Further information on the distance warning function of Active Brake Assist
(Y page 60). Wa
rning and indi cator lamps in the instrument cluster
199On-board computer and displays Z

Information about Service
Resetting the ASSYST PLUS service
interval display !
If the ASSYST PLUS service interval display
has been inadvertently reset, this setting can
be corrected at a qualified specialist work-
shop.
Have service work carried out as described in the Maintenance Booklet. This may otherwise
lead to increased wear and damage to the
major assemblies or the vehicle.
A qualified specialist workshop, e.g. an author-
ized Mercedes-Benz Center, will reset the
ASSYST PLUS service interval display after the
service work has been carried out. You can also obtain further information on maintenance
work, for example.
Special service requirements The specified maintenance interval takes only
the normal operation of the vehicle into
account. Service work will need to be performed
more often if the vehicle is operated under ardu-
ous conditions or increased loads. This can be
the case, for example, when driving frequently in mountainous areas or on poor road surfaces.
In these or similar operating conditions have the interior filter, for example, changed more fre-
quently. Under arduous operating conditions,
the tires must be checked more often. Further
information can be obtained at a qualified spe-
cialist workshop, e.g. an authorized Mercedes-
Benz Center.
Driving abroad An extensive Mercedes-Benz Service network is
also available in other countries. You can obtain further information from any authorized
Mercedes-Benz Center. Care
General notes
H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible man- ner. !
For cleaning your vehicle, do not use any of
the following:
R dry, rough or hard cloths
R abrasive cleaning agents
R solvents
R cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective films
with hard objects, e.g. a ring or ice scraper.
You could otherwise scratch or damage the
surfaces and protective film.
! Do not park your vehicle for a long period of
time directly after cleaning, particularly after
cleaning the wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore,
drive for a few minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a long period of time.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents recom-
mended and approved by Mercedes-Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash G
WARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
! If the HOLD function is activated, the vehicle
brakes automatically in certain situations.
To prevent damage to the vehicle, deactivate the HOLD function in the following or other
similar situations:
R when towing the vehicle
R in the car wash
! Never clean your vehicle in a Touchless
Automatic Car Wash as these use special
cleaning agents. These cleaning agents can
damage the paintwork or plastic parts. 234
CareMaintenance and care

care cannot always be completely repaired. In
such cases, visit a qualified specialist workshop.
X Remove dirt immediately, where possible,
while avoiding rubbing too hard.
X Soak insect remains with insect remover and
rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse off
the treated areas afterwards.
X Remove coolant, brake fluid, tree resin, oils,
fuels and greases by rubbing gently with a
cloth soaked in petroleum ether or lighter
fluid.
X Use tar remover to remove tar stains.
X Use silicone remover to remove wax.
If water no longer forms "beads" on the paint
surface, use the paint care products recommen-
ded and approved by Mercedes-Benz. This is the
case approximately every three to five months,
depending on the climate conditions and the
care product used.
If dirt has penetrated the paint surface or if the
paint has become dull, the paint cleaner recom- mended and approved by Mercedes-Benz
should be used.
Do not use these care products in the sun or on
the hood while the hood is hot.
X Use a suitable touch-up stick, e.g. MB Touch-
Up Stick, to repair slight damage to the paint-
work quickly and provisionally.
Matte finish care !
Never polish the vehicle or the light alloy
wheels. Polishing causes the finish to shine.
! The following may cause the paint to
become shiny and thus reduce the matte
effect:
R strong rubbing of the paintwork with
unsuitable materials
R frequent use of automatic car washes
R washing the vehicle in direct sunlight
! Never use paint cleaner, buffing or polishing
products, or gloss preserver, e.g. wax, for the purpose of paintwork care. These products
are only suitable for high-gloss surfaces. Their
use on vehicles with matte paintwork leads to considerable surface damage or, more spe-
cifically, to shiny, spotted areas.
Always have paintwork repairs carried out at a
qualified specialist workshop. !
Do not use wash programs with a hot wax
treatment under any circumstances.
Observe these notes if your vehicle has a clear
matte finish. This will help you to avoid damage to the paintwork due to incorrect treatment.
These notes also apply to light alloy wheels with
a clear matte finish.
The vehicle should ideally be washed by hand
using a soft sponge, car shampoo and plenty of water.
Use only insect remover and car shampoo from
the range of approved Mercedes-Benz care
products. Cleaning the vehicle parts
Cleaning the wheels G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! Do not park your vehicle for a long period of
time directly after cleaning, particularly after
cleaning the wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore,
drive for a few minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a long period of time.
Cleaning the windows G
WARNING
You could become trapped by the windshield wipers if they start moving while cleaning the
windshield or wiper blades. There is a risk of
injury. 236
CareMaintenance and care

X
Switch off the engine of both vehicles.
X Shift the transmission to position P.
X Switch off all electrical consumers.
X Remove battery cover 0043.
X Connect positive terminal 0044on the vehicle with the flat battery to positive terminal 0087of the
donor vehicle using the red jumper cable. Begin with the flat battery.
X Connect negative terminal 0085of the donor vehicle to negative terminal 0083of the vehicle with the
flat battery using the black jumper cable, beginning with donor vehicle's battery 0084.
X Start the engine of the donor vehicle and run it at idling speed.
X Switch on the ignition in the vehicle with the flat battery.
X If 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.
i Jumper cables and further information regarding jump-starting can be obtained at any qualified
specialist workshop. Towing
Important safety notes
G
WARNING
Functions relevant to safety are restricted or
no longer available if:
R the ignition is switched off
R the brake system or the power steering is
malfunctioning
R there 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. G
WARNING
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. G
WARNING
When towing or tow-starting another vehicle
and its weight is greater than the permissible gross weight of your vehicle, the:
R the towing eye could detach itself
R the 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 iden-
tification plate (Y page 282).
! When Active Brake Assist or the HOLD func-
tion is activated, the vehicle brakes automat- ically in certain situations. To avoid damage to the vehicle, deactivate these systems in the
following or similar situations:
R when towing the vehicle
R in 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. Towing
251Breakdown assistance Z

!
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:
R Secure the tow rope on the same side on
both vehicles.
R Ensure that the tow 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.
R Only secure the tow cable to the towing
eye.
R Observe the brake lamps of the towing
vehicle while driving. Always maintain a dis-
tance so that the tow rope does not sag.
R Do not use steel cables or chains to tow
your vehicle. You could otherwise damage
the vehicle.
! Do not use the towing eyes for recovery pur-
poses as this could damage the vehicle. If in
doubt, recover the vehicle with a crane.
! When towing, pull away slowly and
smoothly. If the tractive power is too high, the vehicles could be damaged.
! The vehicle can be towed a maximum of
30 miles (50km). The towing speed of 30 mph
(50km/h) must not be exceeded.
If the vehicle has to be towed more than
30 miles (50km), the front axle must be raised
or the entire vehicle raised and transported.
! Do not tow with sling-type equipment. This
could damage the vehicle.
! To tow vehicles with KEYLESS-GO, use the
SmartKey instead of the Start/Stop button.
The transmission may otherwise shift to posi- tion Pwhen you open the driver's or front-
passenger door, which could damage the
transmission.
Observe the legal requirements for the relevant countries when towing away.
Make sure that no charging cable is plugged in.
The parking lock cannot be released if a charg-
ing cable is plugged in.
It is better to have the vehicle transported than
to have it towed away. If the vehicle can no longer be driven because of
an accident or breakdown, you have the follow-
ing options:
R transporting the vehicle
As a rule, you should have the vehicle trans-
ported.
R towing the vehicle with a tow rope or tow bar
Only tow the vehicle in exceptional cases.
Observe the following notes.
The vehicle may not be towed and must always be transported if:
R the multifunction display is not working
R one of more of the following warning lamps is
lit up:
- Drive system
- 12 V battery
R one or both of the following display messages
have appeared:
- Stop Switch Engine Off
Stop Switch Engine Off
- Service Required Do Not Shift Service Required Do Not Shift
Gears Visit Dealer Gears Visit Dealer
R you have to tow the vehicle over a longer dis-
tance than 30 miles (50 km).
The battery must be connected and charged.
Otherwise, you:
R cannot turn the SmartKey to position 2in the
ignition lock
R cannot release the electric parking brake
R cannot move the transmission to position N
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 sys- tem malfunction:
R the electric parking brake may not be applied
in certain circumstances, or
R the transmission may not be shifted to P
Switch off non-essential consumers, e.g. the
radio.
Disarm the automatic locking feature before the
vehicle is towed (Y page 166). You could other-
wise be locked out when pushing or towing the
vehicle. 252
TowingBreakdown assistance

Installing/removing the towing eye
Installing the towing eye The brackets for the screw-in towing eye are
located in the bumpers. They are at the rear and
at the front, under covers 0043.
X Remove the towing eye from the stowage
space.
The towing eye is located in the stowage well
under the cargo compartment floor.
Vehicles with the TIREFIT kit: the towing eye is
beneath the tire inflation compressor.
X Press the mark on cover 0043inwards in the
direction of the arrow.
X Take cover 0043off the opening.
X Screw in the towing eye clockwise to the stop.
Removing the towing eye X
Unscrew and remove the towing eye.
X Place the towing eye in the stowage well
beneath the cargo compartment floor in the
cargo compartment (Y page 241).
X Vehicles with the TIREFIT kit: put back the tire
inflation compressor. Towing a vehicle with both axles on
the ground
It is important that you observe the safety
instructions when towing away your vehicle
(Y page 251). X
Vehicles with KEYLESS-GO: use the Smart-
Key instead of the Start/Stop button
(Y page 110).
The transmission automatically shifts to posi-
tion Pwhen you open the driver's or front-
passenger door or when you remove the Smart-
Key from the ignition lock. In order to ensure
that the transmission stays in position Nwhen
towing the vehicle, you must observe the fol-
lowing points:
X Make sure that the vehicle is stationary.
X Turn the SmartKey to position 2in the ignition
lock.
X Depress and hold the brake pedal.
X Shift the transmission to position N.
X Release the brake pedal.
X Release the electric parking brake.
X Switch on the hazard warning lamps
(Y page 89).
X Leave the SmartKey in position 2in the igni-
tion lock.
If the 12 V battery indicator lamp lights up, you must observe the following points:
X Pull over and stop the vehicle safely as soon
as possible, paying attention to road and traf-
fic conditions.
X Shift the transmission to position P.
X Apply the electric parking brake.
i In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination
switch as usual. In this case, only the indicator lamps for the direction of travel flash. After
resetting the combination switch, the hazard
warning lamp starts flashing again. Towing the vehicle with the front axle
raised
Observe the important safety notes when tow-
ing your vehicle with the front axle raised
(Y page 251).
! The ignition must be switched off if the vehi-
cle is being towed with the front axle raised.
Otherwise, ESP ®
may intervene and damage
the brake system. Towing
253Breakdown assistance Z

X
Vehicles with KEYLESS-GO: use the Smart-
Key instead of the Start/Stop button
(Y page 110).
X Make sure that the vehicle is stationary.
X Turn the SmartKey to position 2in the ignition
lock.
X When the vehicle is stationary, depress the
brake pedal and keep it depressed.
X Shift the transmission to position P.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the automatic locking
(Y page 166).
X Switch on the hazard warning lamps
(Y page 89).
X Turn the SmartKey in the ignition lock to posi-
tion 0and leave the SmartKey in the ignition
lock. Towing the vehicle with the rear axle
raised
When towing your vehicle with the rear axle
raised, it is important that you observe the
safety instructions (Y page 251).
! The ignition must be switched off if you are
towing the vehicle with the rear axle raised.
Intervention by ESP ®
could otherwise dam-
age the brake system.
The transmission automatically shifts to posi-
tion Pwhen you open the driver's or front-
passenger door or when you remove the Smart-
Key from the ignition lock. In order to ensure
that the transmission stays in position Nwhen
towing the vehicle, you must observe the fol-
lowing points:
X Vehicles with KEYLESS-GO: use the Smart-
Key instead of the Start/Stop button
(Y page 110).
X Make sure that the vehicle is stationary.
X Turn the SmartKey to position 2in the ignition
lock.
X Depress and hold the brake pedal.
X Shift the transmission to position N.
X Release the brake pedal.
X Apply the electric parking brake.
X Switch off the automatic locking
(Y page 166). X
Bring the front wheels into the straight-ahead
position.
X Switch on the hazard warning lamps
(Y page 89).
X Turn the SmartKey in the ignition lock to posi-
tion 0and leave the SmartKey in the ignition
lock. Transporting the vehicle
All vehicles !
You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
X Turn the SmartKey to position 2in the ignition
lock (Y page 109).
X Shift the transmission to position N.
As soon as the vehicle has been loaded: X Prevent the vehicle from rolling away by
applying the electric parking brake.
X Shift the transmission to position P.
X Turn the SmartKey to position 0in the ignition
lock and remove it.
X Secure the vehicle.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting pur- poses. Fuses
Important safety notes
G
WARNING
If you manipulate or bridge a faulty fuse or if
you replace it with a fuse with a higher amper- age, the electric cables could be overloaded.
This could result in a fire. There is a risk of an
accident and injury.
Always replace faulty fuses with the specified
new fuses having the correct amperage.
! Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse rating for the system concerned.
Only use fuses marked with an "S". Other- 254
FusesBreakdown assistance