tire size MERCEDES-BENZ B-Class ELECTRIC 2015 W246 Owner's Manual

Reached (TIREFIT) .......................... 284
Recommended ..............................
.303
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 309
Function/notes ............................ .307
General notes ................................ 307
Important safety notes .................. 307
Radio type approval for the tire
pressure monitor ........................... 310
Restarting ...................................... 309
Warning lamp ................................. 238
Warning message .......................... 309
TIREFIT kit .......................................... 282
Tires
Aspect ratio (definition) ................. 320
Average weight of the vehicle
occupants (definition) .................... 319
Bar (definition) ............................... 318
Changing a wheel .......................... 321
Characteristics .............................. 318
Checking ........................................ 301
Curb weight (definition) ................. 320
Definition of terms ......................... 318
Direction of rotatio n...................... 321
Display message ............................ 221
Distribution of the vehicle occu-
pants (definition) ............................ 321
DOT (Department of Transporta-
tion) (definition) ............................. 319
DOT, Tire Identification Number
(TIN) ............................................... 318
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 319
General notes ................................ 325
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 319
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 319
Important safety notes .................. 300
Increased vehicle weight due to
optional equipment (definition) ...... 319
Information on driving .................... 300
Kilopascal (kPa) (definition) ........... 319
Labeling (overview) ........................ 315
Load bearing index (definition) ...... 320
Load index ..................................... 317
Load index (definition) ................... 319 M+S tire
s....................................... 302
Maximum load on a tire (defini-
tion) ............................................... 320
Maximum loaded vehicle weight
(definition) ..................................... 319
Maximum permissible tire pres-
sure (definition) ............................. 320
Maximum tire load ......................... 317
Maximum tire load (definition) ....... 320
MOExtended tire s.......................... 302
Optional equipment weight (defi-
nition) ............................................ 320
PSI (pounds per square inch) (def-
inition) ........................................... 320
Replacing ....................................... 321
Service life ..................................... 302
Sidewall (definition) ....................... 320
Speed rating (definition) ................ 319
Storing ........................................... 321
Structure and characteristics
(definition) ..................................... 318
Summer tire s................................. 302
Temperature .................................. 314
TIN (Tire Identification Number)
(definition) ..................................... 320
Tire bead (definition) ...................... 320
Tire pressure (definition) ................ 320
Tire pressures (recommended) ...... 319
Tire size (data) ............................... 325
Tire size designation, load-bearing capacity, speed rating .................... 315
Tire tread ....................................... 301
Tire tread (definition) ..................... 320
Total load limit (definition) ............. 321
Traction ......................................... 314
Traction (definition) ....................... 320
Tread wear ..................................... 314
Uniform Tire Quality Grading
Standards ...................................... 313
Uniform Tire Quality Grading
Standards (definition) .................... 319
Wear indicator (definition) ............. 320
Wheel and tire combination ........... 327
Wheel rim (definition) .................... 319
see Flat tire
Top Tether ............................................ 59
Towing away
Important safety guidelines ........... 292 16
Index

Brakes ........................................... 229
Distance warning ........................... 237
ESP
®
.............................................. 233
ESP ®
OFF ....................................... 234
Overview .......................................... 32
PASSENGER AIR BAG ...................... 41
RBS (Recuperative Brake Sys-
tem) ............................................... 229
Restraint system ............................ 236
Seat belt ........................................ 228
Tire pressure monitor .................... 238
Warranty .............................................. 20
Washer fluid
Display messag e............................ 225
Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 325
Wheel chock ...................................... 322
Wheels
Changing a whee l.......................... 321
Checking ........................................ 301
Cleaning ......................................... 274
General notes ................................ 325
Important safety notes .................. 300
Information on driving .................... 300
Interchanging/changing ................ 321
Mounting a new whee l................... 324
Removing a whee l.......................... 324
Storing ........................................... 321
Tightening torque ........................... 325
Wheel size/tire size ....................... 325
Window curtain air bag
Display message ............................ 211
Operation ......................................... 48
Windows
see Side windows
Windshield
Defrosting ...................................... 121
Windshield washer system
Adding washer fluid ....................... 270
Note s............................................. 333
Windshield wipers
Display message ............................ 225
Problem (malfunction) ................... 114
Rear window wipe r........................ 111
Replacing the wiper blades ............ 112
Switching on/of f........................... 111 Winter driving
Slippery road surfaces ................... 161
Snow chains .................................. 303
Winter operation
General notes ................................ 302
Winter tires
M+S tire s....................................... 302
Wiper blades
Cleaning ......................................... 275
Important safety notes .................. 112
Replacing (rear window )................ 113
Replacing (windshield) ................... 112
Wooden trim (cleaning instruc-
tions) .................................................. 277 Z
ZONE function Switching on/of f........................... 121 18
Index

Drive on carefully. Have ESP
®
checked at a
qualified specialist workshop.
When towing your vehicle with the front axle
raised, observe the notes on ESP ®
(Y page 295).
When towing the vehicle with the rear axle
raised, observe the notes on ESP ®
(Y page 295).
ESP ®
is only deactivated if the åwarning
lamp is lit continuously.
If the ÷ warning lamp and the åwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 233) and display messages which
may be shown in the instrument cluster
(Y page 201).
Only use wheels with the recommended tire
sizes. Only then will ESP ®
function properly.
Characteristics of ESP ®Characteristics of ESP
®
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP ®
is automatically
active.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any circum-
stances.
X Only depress the accelerator pedal as far as
necessary when pulling away.
X Adapt your driving style to suit the prevail-
ing road and weather conditions. Deactivating/activating ESP
® Important safety notes
You can select between the following states
of ESP ®
:
R ESP ®
is activated.
R ESP ®
is deactivated. G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following.
It may be best to deactivate ESP ®
in the fol-
lowing situations:
R when using snow chains
R in deep snow
R on sand or gravel
i Activate ESP ®
as soon as the situations
described above no longer apply. ESP ®
will
otherwise not be able to stabilize the vehi-
cle if the vehicle starts to skid or a wheel
starts to spin.
! Avoid spinning the driven wheels for an
extended period with ESP ®
deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP ®
You can deactivate or activate ESP ®
via the
on-board computer (Y page 194).
ESP ®
deactivated:
The å ESP®
OFF warning lamp in the
instrument cluster lights up.
ESP ®
activated:
The å ESP®
OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP ®
is deactivated
If ESP ®
is deactivated and one or more wheels
start to spin, the ÷ESP®
warning lamp in
the instrument cluster flashes. In such situa-
tions, ESP ®
will not stabilize the vehicle. Driving safety systems
67Safety Z

Always close the cargo compartment floor
before a journey.
! The maximum load capacity of the stow-
age well under the cargo compartment
floor is 55 lbs (25 kg).
There is a stowage area for TIREFIT, the vehi-
cle tool kit, a folding box, etc. underneath the
cargo compartment floor.
Opening/closing the cargo compart-
ment floor X
To open: open the tailgate.
X Holding ribbing ;, press handle :down-
wards.
Handle :folds up.
X Swing the cargo compartment floor
upwards using handle :until it rests
against the cargo compartment cover. X
Fold out hook =on the underside of the
cargo compartment floor. X
Attach hook =to the cargo compart-
ment's upper seal ?.
X To close: detach hook =from upper
seal ?.
X Fasten hook =to the bracket on the
underside of the cargo compartment floor.
X Fold the cargo compartment floor down.
X Press the cargo compartment floor down
until it engages.
Setting the height of the cargo compart- ment floor The stowage well under the cargo compart-
ment floor can be increased or decreased in
size as necessary. To do this, you can lock the
floor at two different heights. The upper catch gives a flat load surface when the rear benchseat is folded forward. X
To raise: using handle :, lift up cargo
compartment floor ;in the direction of
arrow =and pull it upwards.
X Lower cargo compartment floor ;again.
To do this, push the cargo compartment 248
Stowage areasSto
wage an d features

X
Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 153).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the drive system.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO start-func-
tion or KEYLESS-GO: open the driver's
door.
The on-board electronics now have status
0. This is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO start-func-
tion or KEYLESS-GO: remove the Start/
Stop button from the ignition lock
(Y page 131).
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door.
i Vehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires. A TIREFIT kit can be obtained from a quali-
fied specialist workshop. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking next to the tire size designation, the load-
bearing capacity and the speed index
(Y page 315).
MOExtended tires may only be used in con-
junction with an active tire pressure monitor.
If a pressure loss warning message
appears in the multifunction display:
R observe the instructions in the display mes-
sages (Y page 221).
R check the tire for damage.
R if driving on, observe the following notes.
The driving distance possible in run-flat mode is approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden.
In addition to the vehicle load, the driving dis-
tance possible depends upon:
R vehicle speed
R road condition
R outside temperature
The driving distance possible in run-flat mode may be reduced by extreme driving condi-
tions/maneuvers, or it can be increased
through a moderate style of driving.
The driving distance possible in run-flat modeis counted from the moment the tire pressure
loss warning appears in the multifunction dis-
play.
You must not exceed a maximum speed of
50 mph (80 km/h). Flat tire
281Roadside Assistance

When replacing one or all tires, please
observe the following specifications for your
vehicle's tires:
R size
R type and
R the "MOExtended" mark
If a tire has gone flat and cannot be replaced
with a MOExtended tire, a standard tire may
be used as a temporary measure. Make sure
that you use the proper size and type (sum-
mer or winter tire).
Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory. It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit if
you mount tires that do not feature run-flat
properties, e.g. winter tires. A TIREFIT kit may
be obtained from a qualified specialist work-
shop.
Important safety notes G
WARNING
When driving in emergency mode, the driving characteristics deteriorate, e.g. when corner-
ing, accelerating quickly and when braking.
There is a risk of an accident.
Do not exceed the stated maximum speed.
Avoid abrupt steering and driving maneuvers,
and driving over obstacles (curbs, potholes,
off-road). This applies in particular to a laden
vehicle.
Stop driving in emergency mode if:
R you hear banging noises.
R the vehicle starts to shake.
R you see smoke and smell rubber.
R ESP ®
is intervening constantly.
R there are tears in the sidewalls of the tire.
After driving in emergency mode, have the
wheel rims checked at a qualified specialist
workshop with regard to their further use. The defective tire must be replaced in every case. TIREFIT kit
Important safety notes TIREFIT is a tire sealant.
You can use TIREFIT to seal punctures of up to
0.16 in (4 mm), particularly those in the tire
tread. You can use TIREFIT at outside tem-
peratures down to Ò4 ‡ (Ò20 †). G
WARNING
In the following situations, the tire sealant is
unable to provide sufficient breakdown assis- tance, as it is unable to seal the tire properly:
R there are cuts or punctures in the tire larger
than those mentioned above.
R the wheel rim is damaged.
R you have driven at very low tire pressures or
on a flat tire.
There is a risk of an accident.
Do not drive the vehicle. Contact a qualified
specialist workshop. G
WARNING
The tire sealant is harmful and causes irrita-
tion. It must not come into contact with your
skin, eyes or clothing or be swallowed. Do not inhale TIREFIT fumes. Keep tire sealant away
from children. There is a risk of injury.
If you come into contact with the tire sealant,
observe the following:
R Rinse off the tire sealant from your skin
immediately with water.
R If the tire sealant comes into contact with
your eyes, immediately rinse them thor-
oughly with clean water.
R If tire sealant is swallowed, immediately
rinse your mouth out thoroughly and drink
plenty of water. Do not induce vomiting,
and seek medical attention immediately.
R Immediately change out of clothing which
has come into contact with tire sealant.
R If an allergic reaction occurs, seek medical
attention immediately. 282
Flat tireRoadside Assistance

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). Important safety notes
G
WARNING
If wheels and tires of the wrong size are used, the wheel brakes or suspension components
may be damaged. There is a risk of an acci-
dent.
Always replace wheels and tires with those
that fulfill the specifications of the original
part.
When replacing wheels, make sure to use the
correct:
R designation
R model
When replacing tires, make sure to use the
correct:
R designation
R manufacturer
R model G
WARNING
A flat tire severely impairs the driving, steer-
ing and braking characteristics of the vehicle.
There is a risk of accident.
Tires without run-flat characteristics:
R do not drive with a flat tire.
R immediately replace the flat tire with your
emergency spare wheel or spare wheel, or
consult a qualified specialist workshop. Tires with run-flat characteristics:
R pay attention to the information and warn-
ing notices on MOExtended tires (tires with
run-flat characteristics).
Accessories that are not approved for your
vehicle by Mercedes-Benz or are not being
used correctly can impair the operating
safety.
Before purchasing and using non-approved
accessories, visit a qualified specialist work-
shop and inquire about:
R suitability
R legal stipulations
R factory recommendations
Information on the sizes and types of wheels
and tires for your vehicle can be found under "Wheel/tire combinations" (Y page 325).
Information on tire pressure can be found:
R on the vehicle's Tire and Loading Informa-
tion placard on the B-pillar (Y page 310)
R on the tire pressure label on the charge
socket flap (Y page 148)
R under "Tire pressure" (Y page 303) Operation
Information on driving
Check the tire pressure when the vehicle is
heavily laden and adjust prior to a trip.
While driving, pay attention to vibrations,
noises and unusual handling characteristics,
e.g. pulling to one side. This may indicate that
the wheels or tires are damaged. If you sus-
pect that a tire is defective, reduce your
speed immediately. Stop the vehicle as soon
as possible to check the wheels and tires for
damage. Hidden tire damage could also be
causing the unusual handling characteristics. If you find no signs of damage, have the tires
and wheels checked at a qualified specialist
workshop.
When parking your vehicle, make sure that
the tires do not get deformed by the curb or 300
OperationWheels and tires

approximately
áin(1.6 mm) has been
re ached. If this is the case, the tire is so worn
that it must be replaced. Selecting, mounting and replacing
tires
R Only mount tires and wheels of the same
type and make.
Exception: it is permissible to install a dif-
ferent type or make in the event of a flat
tire. Observe here the "MOExtended tires
(tires with run-flat characteristics)" section (Y page 281).
R Only mount tires of the correct size onto
the wheels.
R Break in new tires at moderate speeds for
the first 60 miles (100 km). They only reach
their full performance after this distance.
R Do not drive with tires which have too little
tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
R Replace the tires after six years at the lat-
est, regardless of wear. MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires.
MOExtended tires may only be used in con-
junction with an active tire pressure monitor
and only on wheels specifically tested by
Mercedes-Benz.
Notes on driving with MOExtended tires with
a flat tire (Y page 281).
Vehicles equipped with MOExtended tires are
not equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit if
you mount tires that do not feature run-flat
properties, e.g. winter tires. A TIREFIT kit may be obtained from a qualified specialist work-
shop. Winter operation
General notes
Have your vehicle winter-proofed at a quali-
fied specialist workshop at the onset of win-
ter.
Observe the notes in the "Changing a wheel"
section (Y page 321). Driving with summer tires
At temperatures below 45 ‡(+7 †), summer
tires lose elasticity and therefore traction and braking power. Change the tires on your vehi-cle to M+S tires. Using summer tires at very
cold temperatures could cause cracks to
form, thereby damaging the tires perma-
nently. Mercedes-Benz cannot accept
responsibility for this type of damage. G
WARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control of your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately. M+S tires
G
WARNING
M+S tires with a tire tread depth of less than
ã in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There is
a risk of an accident.
M+S tires with a tread depth of less than ãin
(4 mm) must be replaced immediately.
At temperatures below 45 ‡(+7 †), use win-
ter tires or all-season tires. Both types of tire are identified by the M+S marking.
Only winter tires bearing the isnowflake
symbol in addition to the M+S marking pro- 302
Winter operationWheels and tires

vide the best possible grip in wintry road con-
ditions. Only these tires will allow driving
safety systems such as ABS and ESP ®
to
function optimally in winter. These tires have
been developed specifically for driving in
snow.
Use M+S tires of the same make and tread on all wheels to maintain safe handling charac-
teristics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
When you have mounted the M+S tires:
X Check the tire pressures (Y page 303).
X Restart the tire pressure monitor
(Y page 309). Snow chains
G
WARNING
If snow chains are mounted on the rear
wheels, the snow chains could cause abrasion
to the vehicle body or to chassis components.
This could cause damage to the vehicle or the tires. There is a risk of an accident.
To avoid hazardous situations:
R never mount snow chains on the rear
wheels
R only mount snow chains in pairs on the
front wheels.
! On some tire sizes there is not enough
space for snow chains. To avoid damage to the vehicle or tires, observe the "Wheel and
tire combinations" section under "Tires and wheels".
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that
have been specially approved for your vehicle
by Mercedes-Benz, or are of a corresponding standard of quality. For more information,
please contact a qualified specialist work-
shop. If you intend to mount snow chains, please
bear the following points in mind:
R Snow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel-tire combinations (Y page 325).
R Only use snow chains when driving on
roads completely covered by snow.
Remove the snow chains as soon as possi- ble when you come to a road that is not
snow-covered.
R Local regulations may restrict the use of
snow chains. Observe the appropriate reg-
ulations if you wish to mount snow chains.
R Do not exceed the maximum permissible
speed of 30 mph (50 km/h).
R When snow chains are installed, never use
Active Parking Assist (Y page 168).
You may wish to deactivate ESP ®
when pull-
ing away with snow chains installed
(Y page 66). You can thereby allow the wheels
to spin in a controlled manner, achieving an
increased driving force (cutting action). Tire pressure
Tire pressure specifications
Important safety notes G
WARNING
Underinflated or overinflated tires pose the
following risks:
R the tires may burst, especially as the load
and vehicle speed increase.
R the tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
R the driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is a risk of an accident. Tire pressure
303Wheels and tires
Z

Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
R monthly, at least
R if the load changes
R before beginning a long journey
R under different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
i The specifications on the sample Tire and
Loading Information placard and tire pres-
sure tables are examples. Tire pressure
specifications are vehicle-specific and may
deviate from the data shown here. The tire pressure specifications that are valid for
your vehicle can be found on the Tire and
Loading Information placard and tire pres-
sure table on the vehicle.
General notes The recommended tire pressures for the tires
mounted at the factory can be found on the
labels described here.
Further information on tire pressures can be
obtained at a qualified specialist workshop.
Tire and Loading Information placard :
Recommended tire pressures
The Tire and Loading Information placard is
on the B-pillar on the driver's side
(Y page 310).
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold tires. The recommended tire pressures
are valid for the maximum permissible load
and up to the maximum permissible vehicle
speed.
Tire pressure table The tire pressure table is on the inside of the
charge socket flap. Example: tire pressure table for all tires permitted
for this vehicle by the factory
The tire pressure table contains the recom-
mended pressures for cold tires for various
operating conditions, i.e. differing load and
speed conditions. Example: tire pressure table with tire dimensions
If a tire size precedes a tire pressure, the tirepressure information following is only valid
for that tire size. The load conditions "partially
laden" and "fully laden" are defined in the
table for different numbers of occupants and
amounts of luggage. The actual number of
seats may differ. 304
Tire pressureWheels and tires