brake fluid MERCEDES-BENZ B-Class ELECTRIC 2016 W246 Owner's Manual

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

Recharging statistics (COMAND)see Electrical energy generated
Recuperative Brake System
Driving safety systems ..................... 68
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 337
Remote control
Garage door opener ....................... 263
Programming (garage door
opener) .......................................... 264
Replacing bulbs
Important safety notes .................. 104
Overview of bulb types .................. 105
Removing/replacing the cover
(front wheel arch) .......................... 106
Reporting safety defects .................... 26
Rescue card ......................................... 27
Reserve
High-voltage battery ...................... 238
Restraint system
Display message ............................ 210
Introduction ..................................... 40
Warning lamp ................................. 238
Warning lamp (function) ................... 41
Reverse gear
Engaging ........................................ 135
Reversing feature
Side windows ................................... 83
Roadside Assistance (breakdown) .... 22
Roof carrier ........................................ 251
Roof lining and carpets (cleaning
guidelines) ......................................... 280
Roof load (maximum) ........................ 338
S
Safety
Children in the vehicle ..................... 56
Safety system
see Driving safety systems
Seat belts
Adjusting the height ......................... 44
center rear-compartment seat ......... 45
Cleaning ......................................... 279
Correct usage .................................. 44
Fastening ......................................... 44
Important safety guidelines ............. 42 Introduction ..................................... 42
Releasing ......................................... 45
Warning lamp ................................. 229
Warning lamp (function) ................... 45
Seats
Adjusting (electrically) ..................... 91
Adjusting (manually) ........................ 90
Adjusting the 4-way lumbar sup-
port .................................................. 92
Adjusting the head restraint ............ 91
Cleaning the cover ......................... 279
Correct driver's seat position ........... 88
Folding the backrest (rear com-
partment) forwards/back .............. 246
Important safety notes .................... 89
Seat heating problem ...................... 94
Storing settings (memory func-
tion) ................................................. 98
Switching seat heating on/off ......... 92
Securing a load
see Securing cargo
Securing cargo .................................. 247
Selector lever
Cleaning ......................................... 278
see DIRECT SELECT lever
Sensors (cleaning instructions) ....... 277
Service menu (on-board com-
puter) .................................................. 194
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 335
Coolant (engine) ............................ 336
Important safety notes .................. 335
Refrigerant (air-conditioning sys-
tem) ............................................... 337
Washer fluid ................................... 336
Setting the air distribution ............... 120
Setting the airflow ............................ 121
Setting the maximum charge cur-
rent (Control system) ........................ 196
Settings
Factory (on-board computer) ......... 198
On-board computer ....................... 195
Side impact air bag ............................. 48
Si de marker lamp (display mes-
sage) ................................................... 216
14Index

Securing from rolling away ............ 324
Starting .......................................... 132
Transporting .................................. 297
Unlocking (in an emergency) ........... 80
Unlocking (SmartKey) ...................... 72
Vehicle data ................................... 338
Vehicle data
Roof load (maximum) ..................... 338
Trunk load (maximum) ................... 338
Vehicle dimensions ........................... 338
Vehicle emergency locking ................ 81
Vehicle Homepage
Data protection .............................. 152
Functions ....................................... 153
General information ....................... 152
Internet connection ....................... 153
Vehicle identification number
see VIN
Vehicle identification plate .............. 334
Vehicle tool kit .................................. 282
Ventilation
Setting the vents ........................... 126
Video
Operating the DVD ......................... 191
VIN
Seat ............................................... 334
Type plate ...................................... 334
W
Warning and indicator lampsABS ................................................ 232
Brakes ........................................... 231
Distance warning ........................... 239
ESP
®.............................................. 235
ESP®OFF ....................................... 236
Overview .......................................... 32
PASSENGER AIR BAG ...................... 41
RBS (Recuperative Brake Sys-
tem) ............................................... 231
Restraint system ............................ 238
Seat belt ........................................ 229
Tire pressure monitor .................... 240
Warranty .............................................. 21
Washer fluid
Display message ............................ 227
Wheel and tire combinations
Tires ............................................... 329 Wheel bolt tightening torque
........... 326
Wheel chock ...................................... 324
Wheels
Changing a wheel .......................... 323
Checking ........................................ 303
Cleaning ......................................... 276
General notes ................................ 327
Important safety notes .................. 302
Information on driving .................... 302
Interchanging/changing ................ 323
Mounting a new wheel ................... 326
Removing a wheel .......................... 326
Storing ........................................... 323
Tightening torque ........................... 326
Wheel size/tire size ....................... 327
Window curtain air bag
Display message ............................ 211
Operation ......................................... 49
Windows
see Side windows
Windshield
Defrosting ...................................... 121
Windshield washer system
Adding washer fluid ....................... 272
Important safety notes .................. 336
Windshield wipers
Display message ............................ 227
Problem (malfunction) ................... 114
Rear window wiper ........................ 110
Replacing the wiper blades ............ 110
Switching on/off ........................... 109
Winter driving
Slippery road surfaces ................... 161
Snow chains .................................. 305
Winter operation
General notes ................................ 304
Winter tires
M+S tires ....................................... 304
Wiper blades
Cleaning ......................................... 277
Important safety notes .................. 110
Replacing (rear window) ................ 112
Replacing (windshield) ................... 111
Woode n trim (cleaning instruc-
tions) .................................................. 278
Workshop
see Qualified specialist workshop
18Index

Do not depress the brake pedal continuously
while the vehicle is in motion, e.g. causing the
brakes to rub by constantly applying light
pressure to the pedal. This results in exces-
sive and premature wear to the brake pads.
Heavy and light loads
GWARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This increases the stopping distance and can even
cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest. Never
depress the brake pedal and the accelerator
pedal at the same time.
!Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately.
Drive on for a short while. This allows the air-
flow to cool the brakes more quickly.
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 vehi-
cle washed, brake firmly while paying atten-
tion to the traffic conditions. This will warm up
the brake discs, thereby drying them more
quickly and protecting them against corro-
sion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt
residue may form on the brake discs and brake pads. This can result in a significantly
longer braking distance.
RIn order to prevent any salt build-up, apply
the brakes occasionally while paying atten-
tion to the traffic conditions.
RCarefully depress the brake pedal and the
beginning and end of a journey.
RMaintain a greater distance to the vehicle
ahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up in
the instrument cluster and
Ryou hear a warning tone while the engineis 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 immedi-
ately. Consult a qualified specialist work-
shop to arrange this.
!A function or performance test should
only be carried out on a 2-axle dynamom-
eter. If you wish to operate the vehicle on
such a dynamometer, please consult a
qualified specialist workshop in advance.
You could otherwise damage the drive train
or the brake system.
!As the ESP®system operates automati-
cally, the engine and the ignition must be
switched off (the SmartKey must be in posi-
tion 0or 1in the ignition lock) if:
Rthe electric parking brake is tested on a
brake dynamometer (for a maximum of
ten second s)
Rthe vehicle is towed with the front axle
raised.
Braking triggered automatically by ESP
®
may seriously damage the brake system.
Driving tips159
Driving and parking
Z

All checks and maintenance work on the
brake system must be carried out at a quali-
fied specialist 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 function-
ality of your brakes at regular intervals.
You can find a description of Brake Assist
(BAS) on (
Ypage 63).
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 have not been approved
for Mercedes-Benz vehicles or which are not
of an equivalent quality could affect your vehi-
cle'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 corresponds to an equivalent quality
standard. Brake fluid 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 determinewhether the brake pad/lining thickness is still
sufficient. The test gage is in the vehicle docu-
ment wallet in the glove box.
Front wheel
Rear wheel
XBring the vehicle and wheels into a suitable
position so that you can attach test gage
A.
XSecure the vehicle against rolling away
(
Ypage 153).
XEngage park position P.
XSwitch off the drive system.
XPlace test gageAbetween the wheel's
spokes on brake pad/lining =.
160Driving tips
Driving and parking

Display messagesPossible causes/consequences andMSolutions
F(USA
only)
!(Canada
only)
Parking
BrakeInop‐
erative
The yellow !warning lamp lights up. The red F(USA only)
or ! (Canada only) indicator lamp flashes for about ten sec-
onds after the electric parking brake has been applied or released.
It then goes out or remains lit.
The electric parking brake is malfunctioning, e.g. because of over-
voltage or undervoltage.
XRectify the cause of the overvoltage or undervoltage, e.g. by
chargin gth ebattery or restarting the drive system.
XEngage or release the electric parking brake.
If it remains impossible to apply or release the electric parking
brake:
XSwitc h offthe ignition and turn it back on.
XEngage or release the electric parking brake.
If th e electric parking brake still cannot be released:
XConsult a qualified specialist workshop.
If th e electric parking brake still cannot be applied:
XVisit a qualified specialist workshop.
The yellow !warning lamp lights up and the red F(USA
only) or !(Canada only) indicator lamp flashes.
It is no t possible to apply the electric parking brake manually.
XShift th e transmission to position P.
XVisit a qualified specialist workshop.
$(USA
only)
J(Canada
only)
Check Brake Fluid
Level
There is not enough brake fluid in the brake fluid reservoir.
A warning tone sounds. The $(USA only) or J(Canada
only) warning lamps in the instrument cluster may also light up.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecur eth e vehicle against rolling away (Ypage 153).
XConsult a qualified specialist workshop.
XDo no t add brake fluid. This does not correctth e malfunction.
208Display messages
On-board computer and displays

Vehicle
Display messagesPossible causes/consequences andMSolutions
Depress Brake to
Start Engine
You have attempted to start the drive system with the transmis-
sion in positionNwithout depressing the brake pedal.
XDepress the brake pedal.
To Deselect P or
N, Depress Brake
and Start Engine
You have attempted to shift the transmission to position Ror D
without starting the drive system.
XStart the drive system.
XDepress the brake pedal.
iIt is only possible to shift the transmission from position Pto
the desired position if you depress the brake pedal. Only then
can the parking lock be deactivated. If you do not depress the
brake pedal, the DIRECT SELECT lever can still be moved but the parking lock remains engaged.
iAt transmission fluid temperatures below Ò4‡( Ò20 †) you can
only shift out of position Pinto another transmission position
when the engine is running.
Apply Brake to
Shift from 'P'
You have attempted to shift the transmission to position R,Nor D
without depressing the brake pedal.
XDepress the brake pedal.
Transmission Not
in P Risk of Vehi‐
cle Rolling Away
The driver's door is open or not fully closed and the transmission
is in position R,Nor D.
A warning tone also sounds.
GWARNING
The vehicle may roll away.
There is a risk of an accident.
XShift the transmission to position P.
XSecure the vehicle against rolling away (Ypage 153).
XClose the driver's door completely.
Display messages225
On-board computer and displays
Z

ProblemPossible causes/consequences andMSolutions
$(USA only)
J (Canada only)
The red brake system
warning lamp is lit while
the drive system is run-
ning. A warning tone
also sounds.There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 153).
XDo not add brake fluid. Adding more will not remedy the mal-
function.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
!֌
é (USA only)
J (Canada only)
The yellow ABS, ESP
®,
ESP®OFF and
RBS (USA only)/brakes
(Canada only) warning
lamps are lit while the
drive system is running.
ABS (Anti-lock Braking System) is deactivated due to a malfunc-
tion. Therefore, BAS (Brake Assist), COLLISION PREVENTION
ASSIST PLUS, ESP
®(Electronic Stability Program), RBS, the HOLD
function and hill start assist are also deactivated, for example.
ATTENTION ASSIST is deactivated.
GWARNING
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 regen-
erative braking effect by applying the brake yourself.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely affec-
ted. The braking distance in an emergency braking situation can
increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
If the ABS control unit is malfunctioning, other systems may also
not be available, e.g. the navigation system.
232Warning and indicator lamps in the instrument cluster
On-board computer and displays

XRinse the vehicle with clean water and dry
thoroughly withachamois.
XDo not let the cleaning agent dry on the
paintwork.
Carefully remove all deposits of road salt as
soon as possible when driving in winter.
Power washers
GWARNING
The water jet froma circular jet nozzle (dirt
blasters) can cause invisible exterior damage
to th e tires or chassis components. Compo-
nent s damaged in this way may fail unexpect-
edly. There is a risk of an accident.
Do no t use power washers with circular jet
nozzles to clean th e vehicle. Have damaged
tires or chassis components replaced imme-
diately.
!Always maintainadistance of at least
11.8 in (30 cm)betwee n thevehicl e and the
power washer nozzle. Information about
the correct distance is available from the
equipment manufacturer.
Move the power washer nozzle around
when cleaning your vehicle.
Do not aim directly at any of the following:
Rtires
Rdoor gaps, roof gaps, joints, etc.
Relectrical components
Rbattery
Rconnectors
Rlights
Rseals
Rtrim
Rventilation slots
Damaged seals or electrical components
can lead to leaks or failures.
Cleaning the paintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosive deposits, areas affected
by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit a qualified spe-
cialist workshop.
XRemove dirt immediately, where possible,
while avoiding rubbing too hard.
XSoak insect remains with insect remover
and rinse off the treated areas afterwards.
XSoak bird droppings with water and rinse
off the treated areas afterwards.
XRemove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with a cloth soaked in petroleum ether or
lighter fluid.
XUse tar remover to remove tar stains.
XUse silicone remover to remove wax.
If water no longer forms "beads" on the paint surface, use the paint care products recom-
mended and approved by Mercedes-Benz.
This is the case approximately every three to
five months, depending on the climate con-
ditions and the care product used.
If dirt has penetrated the paint surface or if
the paint has become dull, the paint cleaner
recommended 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.
XUse a suitable touch-up stick, e.g. MB
Touch-Up Stick, to repair slight damage to
the paintwork quickly and provisionally.
Care275
Maintenance and care
Z

Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonous and haz-
ardous to health. There is a risk of injury.
Comply with instructions on the use, storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children.
HEnvironmental note
Dispose of service products in an environ-
mentally responsible manner.
Service products include the following:
RLubricants, e.g. transmission oil
RCoolant
RBrake fluid
RWindshield washer fluid
RClimate control system refrigerant
Components and service products must be
matched. Only use products recommended
by Mercedes-Benz. Damage which is caused
by the use of products which have not been
recommended is not covered by the
Mercedes-Benz warranty or goodwill ges-
tures. They are listed in this Mercedes-Benz
Operator's Manual in the appropriate section.
Information on tested and approved products
can be obtained at an authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved
by Mercedes-Benz by the following inscrip-
tion on the containers:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB-Approval (e.g. MB-Approval 229.51)
Other designations or recommendations indi-
cate a level of quality or a specification in
accordance with an MB Sheet Number (e.g. MB 229.5). They have not necessarily been
approved by Mercedes-Benz.
Other identifications, for example:
R0 W-30
R5 W-30
R5 W-40
Brake fluid
GWARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake
fluid is too low, vapor pockets may form in the
brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
When handling brake fluid, observe the
important safety notes on service products
(
Ypage 335).
The brake fluid change intervals can be found
in the Maintenance Booklet.
Only use brake fluid approved by Mercedes-
Benz in accordance with MB-Freigabe or MB-
Approval 331.0.
Information about approved brake fluid can
be obtained at any qualified specialist work-
shop or on the Internet at
http://bevo.mercedes-benz.com.
iHave the brake fluid regularly replaced at
a qualified specialist workshop and the
replacement confirmed in the Maintenance
Booklet.
Service products and filling capacities335
Technical data
Z