Use only charging cables which have been
approved and recommended for the vehicle.
Do not use:
R extension chords
R cable reels
R multiple sockets
R travel adapters
i When possible, only charge the high-
voltage battery when the charge level is
below 80 %.
It is recommended to charge the high-
voltage battery prior to reaching less
than 20% state of charge.
Discharged high-voltage battery When the high-voltage battery is com-
pletely discharged, the drive system is
switched off. This protects the battery
from exhaustive discharge.
i By switching the ignition off and on
again, the drive system can be briefly
reactivated once. This allows you to park the vehicle safely.
Do not allow your vehicle to remain sta-
tionary for more than 14 days with a dis-
charged, or nearly discharged, high-volt-
age battery. You can check the charge level with the charge level gauge (Y page 81).
High or low outside temperatures The efficiency of the high-voltage battery
is temperature-dependent and decreases
at high or low temperatures. Additionally, the electrolytes used can gel at very low
temperatures.
You can check the maximum capacity avail-
able using the indicator in the multifunc- tion display (Y page 87). Energy consumption and range The available energy of the high-voltage
battery is reduced by:
R low outside temperatures
R switching on electrical consumers
At low temperatures and after being parked for an extended period without charging,
the physical properties of the high-volt-
age battery:
R can cause a significant reduction in the
performance of the battery
R can lead to longer charging times
In extreme cases, you will not be able to
start the vehicle. For this reason, always
connect the charging cable or make sure the battery is completely charged when park-
ing the vehicle in low outside tempera-
tures or for an extended period of time.
Due to its physical properties, the capa-
city of a high-voltage battery decreases
over its lifespan.
Thus, the following are reduced:
R the maximum attainable range of the
vehicle
R the maximum performance output (accel-
eration) of the vehicle
You can actively contribute to the reduc-
tion of the vehicle's energy consumption
by:
R driving conservatively
R maintaining the vehicle regularly
R decreasing the use of electrical consum-
ers
Notes on battery care Avoid storing and transporting the vehicle
at high temperatures for extended periods
of time (e. g. container transport).
When out of use for longer periods of time,
connect the vehicle to a voltage supply.
If the vehicle is not connected to a voltage supply, it must remain within a tempera- High-voltage battery
113>> Operation. Z
ture range from
Ò4‡(Ò20 ¥) to 104 ‡
(40 ¥) .
When the vehicle is exposed to tempera-
tures below Ò13‡(Ò25 ¥) for longer than
seven days, irreversible damage by frost
can occur.
Terms of use Observe the following notes:
R exclusions of the high-voltage battery
terms of use in the battery rental con-
tract
R exclusions and limitations in the war-
ranty and guarantee documents, as well as
in the Service Booklet
R maintenance notes for the high-voltage
battery in the Service Booklet
Overvoltage protection !
Overvoltage in the on-board powersup-
ply system can damage the vehicle.
The vehicle is therefore equipped with a
protective device against overvoltage in the power supply system. This protective
device can be activated in severe thun-
derstorms, for example, and lead to
security systems being triggered. This
function is used to protect the vehicle.
Once the security system has been reac-
tivated, the charging process continues
automatically.
Reactivate the security system after it has been triggered. Otherwise the charging
process will not continue. The high-volt-
age battery is not being charged, which may result in the vehicle not being ready to
start.
If you have secured other devices using the same security system, they will also be
deactivated after this is triggered. Make
sure that these devices do function after
reactivating the security system. Charging cable and ‑connecter warming Observe the safety notes on (Y
page 112).
Charging cable and ‑connecter can become warmed during charging process when con-
nected to a power source.
This warming is caused by
R high charge currents
R charging time
R transfer resistances at the plug contacts
R resistances of the charging cable
If the infrastructure of the power supply
system and charging cable are in good
order, the charging cable and ‑connecter
will only warm up within admissible
threshold.
Damaged charging cable plug or its con-
tacts may lead to warming above admissi-
ble threshold. In case of this, have the
cable, respectively power socket,
exchanged or disposed by a qualified elec-
trician. Charging at an AC power socket or a
private wallbox
Charging at an AC power socket G
WARNING
If you apply improperly installed power
sockets or adapters, extension cables or
similar to connect the charging cable to
power sockets, this may cause fire or lead
to electric shock. Risk of life!
In order to avoid the risk, please observe
the following:
R Connect the charging cable only to power
sockets which are
- properly installed
- approved by a qualified electrician
R For safety reasons only use charging
cables which have been supplied and
approved for the vehicle.
R Do not use a damaged charging cable. 114
High-voltage battery>> Operation.
of charge service life you can continue to
use the "Vehicle Homepage" with costs.
Further information can be obtained at any
authorized electric drive smart center.
The "Vehicle Homepage" is available in the following languages:
R German
R English
R French
R Italian
R Spanish
R Portuguese
R Dutch
i Further information concerning sup-
ported end devices and available lan-
guages can be found under the following
address: http://vh.smart.com/info.
In order to call up the "Vehicle Homepage", the vehicle must be connected to the Inter-
net.
This is enabled:
R via a mobile service module (if your
vehicle is equipped with it)
(Y page 122)
R via powerline (Y page 122)
Further information can be found here
(Y page 114).
Personal area setup You must first set up your personal access
under http://vh.smart.com in order to
access the "Vehicle Homepage". For this,
you need a valid Email address.
Following registration, you then have
access to your personal area on the "Vehi-
cle Homepage". The vehicle must be regis-
tered in the personal area for you to access the settings of your vehicle. Call up the
corresponding input field within the
"Vehicle Homepage". Enter the vehicle
identification number (VIN) and the vehi-
cle verification code (VVC). This informa- tion can be obtained at your authorized electric drive smart center when you
receive the vehicle.
Notes on data protection Please note that the "Vehicle Homepage"
allows access to your personal data. For
this reason, keep your vehicle verification
code (VVC) and your user data in a secure
place and safe from unauthorized persons.
Each person who has access to the above
information can use the functions on the
"Vehicle Homepage". For this reason, make
sure than no unauthorized persons have
access to your personal area.
After selling the vehicle, you are required to delete the vehicle from your personal
area on the "Vehicle Homepage". You must
also destroy the vehicle verification code
(VVC) documents.
If you have bought a pre-owned vehicle, it
may be possible that the previous owner
still has access to the "Vehicle Homepage". For this reason, have a new vehicle veri-
fication code (VVC) reissued to you at an
authorized electric drive smart center
after purchase. With this new code you can
set up the access to your vehicle as descri- bed in the "Personal area setup" section.
Here you can also deactivate the previous
owner's access, should it still be active.
Calling up the functions of the "Vehicle
Homepage" If the vehicle is registered in your per-
sonal area of the "Vehicle Homepage", you
can, for example, access the following
functions:
R call up the current charge level
R program the departure time
R activate the "Air conditioning before
start" function
When the vehicle is being charged, you can call up the estimated charging time and the
attainable range. Both results are estima- High-voltage battery
121>> Operation. Z
It monitors the tire inflation pressure in
all four tires. A warning is issued to alert
you to a decrease in pressure in one or more of the tires.
The Tire Pressure Monitoring System
(TPMS) is equipped with a combination low
tire pressure/TPMS malfunction telltale in the instrument cluster. Depending on how
the telltale illuminates, it indicates a low
tire pressure condition or a malfunction in
the TPMS system itself:
R If the telltale illuminates continuously,
one or more of your tires is significantly
underinflated. There is no malfunction
in the TPMS.
R If the telltale flashes for 60 seconds and
then stays illuminated, the TPMS system
itself is not operating properly.
The TPMS only functions on wheels that are
equipped with the proper electronic sen-
sors. G
WARNING
The TPMS does not indicate a warning for
wrongly selected inflation pressures.
Always adjust tire inflation pressure
according to the Tire and Loading Infor-
mation placard on the driver’s door B‑pil- lar.
The TPMS is not able to issue a warning due to a sudden dramatic loss of pressure (e.g.
tire blowout caused by a foreign object). In
this case bring the vehicle to a halt by
carefully applying the brakes and avoiding abrupt steering maneuvers. G
WARNING
Each tire should be checked monthly when
cold and inflated to the inflation pressure recommended by the vehicle manufacturer
on the Tire and Loading Information plac-
ard. If your vehicle has tires of a differentsize than the size indicated on the Tire and
Loading Information placard, you should
determine the proper tire inflation pres-
sure for those tires. As an added safety feature, your vehicle has
been equipped with a tire pressure moni-
toring system (TPMS) that illuminates a low
tire pressure telltale when one or more of
your tires is significantly underinflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and
check your tires as soon as possible, and
inflate them to the proper pressure. Driv-
ing on a significantly underinflated tire
causes the tire to overheat and can lead to
tire failure.
Underinflation also increases energy con-
sumption, reduces tire tread life, and may
affect the vehicle’s handling and stopping
ability. Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
underinflation has not reached the level to trigger illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately
1 minute and then remain continuously
illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the mal-
function exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.
TPMS malfunctions may occur for a variety
of reasons, including the installation of
incompatible replacement or alternate
tires or wheels on the vehicle that prevent
the TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on
your vehicle to ensure that the replacement Tires and wheels
131>> Operation.
Z
or alternate tires and wheels allow the
TPMS to continue to function properly.
i If a condition causing the TPMS to mal-
function develops, it may take up to
10 minutes for the system to signal a mal-
function using the TPMS telltale flash-
ing and illumination sequence.
The telltale extinguishes after a few
minutes driving if the malfunction has
been corrected.
i Operating radio transmission equip-
ment (e.g. wireless headsets, two-way
radios) in or near the vehicle could
cause the TPMS to malfunction.
i USA only:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
R This device may not cause harmful
interference, and
R this device must accept any interfer-
ence received, including interference
that may cause undesired operation.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
i Canada only:
This device complies with RSS‑210 of
Industry Canada. Operation is subject to
the following two conditions:
R This device may not cause interfer-
ence, and
R this device must accept any interfer-
ence received, including interference
that may cause undesired operation of
the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment. Restarting the TPMS G
WARNING
It is the driver’s responsibility to cali-
brate the TPMS on the recommended cold
inflation pressure. Underinflated tires
affect the ability to steer or brake and
might cause you to lose control of the vehi- cle.
When you restart the TPMS, the system sets
new reference values for each tire.
The TPMS must be restarted when you have
adjusted the tire inflation pressure to a
new level (e.g. because of different load or driving conditions). The TPMS is then
recalibrated to the current tire inflation
pressures.
X Using the Tire and Loading Information
placard on the driver’s door B‑pillar
(Y page 133), make sure the tire infla-
tion pressure of all four tires is correct.
i Restart the TPMS after adjusting the
tire inflation pressure to the inflation
pressure recommended for the vehicle
operating condition. Tire pressure
should only be adjusted on cold tires.
Observe the recommended tire inflation
pressure on the Tire and Loading Infor-
mation placard on the driver’s door
B‑pillar (Y page 133). X
Press Restarting TPMS button :.
The combination low tire pressure/TPMS malfunction telltale in the instrument
cluster (Y page 23) flashes for approx-
imately 5 seconds and then goes out. 132
Tires and wheels>> Operation.
The traction grades, from highest to low-
est, are AA, A, B, and C. Those grades rep-
resent the tire’s ability to stop on wet
pavement as measured under controlled
conditions on specified government test
surfaces of asphalt and concrete. A tire
marked C may have poor traction perform-
ance.
Temperature G
WARNING
The temperature grade for this tire is
established for a tire that is properly
inflated and not overloaded. Excessive
speed, underinflation, or excessive load-
ing, either separately or in combination,
can cause excessive heat build-up and pos- sible tire failure.
The temperature grades are A (the highest),
B, and C, representing the tire’s resistance to the generation of heat and its ability todissipate heat when tested under control-
led conditions on a specified indoor lab-
oratory test wheel. Sustained high temper- ature can cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to sudden
tire failure. The grade C corresponds to a
level of performance which all passenger
car tires must meet under the Federal Motor
Vehicle Safety Standard No. 109. Grades B
and A represent higher levels of perform-
ance on the laboratory test wheel than the
minimum required by law. Rotating tires
G
WARNING
Do not rotate front and rear wheels as they
have different dimensions, e.g. rim size,
wheel offset etc. Otherwise, the handling
can be affected and you could endanger
yourself and others. Thoroughly clean the mounting face of the
wheels and brake discs, i.e. the inner side of the wheels/tires each time the wheels/
tires are changed. Check for and ensure
proper tire inflation pressure. G
WARNING
Have the tightening torque checked after
changing a wheel. Wheels could become
loose if not tightened with a torque of
81 lb‑ft (110 Nm).
Only use genuine smart wheel bolts speci-
fied for your vehicle’s rims.
For information on wheel change, see “Flat
tire” (Y page 187). Tire labeling
Besides tire name (sales designation) and
manufacturer name, a number of markings
can be found on a tire.
Following are some explanations for the
markings on your vehicle’s tires: :
Uniform Quality Grading Standards
(Ypage 138)
; DOT, Tire Identification Number (TIN)
(Ypage 142)
= Maximum tire load (Y page 136)
? Maximum tire inflation pressure
(Ypage 133) Tires and wheels
139>> Operation. Z
Treadwear indicators
Narrow bands, sometimes called “wear
bars” that show across the tread of a tire
when only 1
/ 16 in (1.6 mm) of tread remains.
Uniform Tire Quality Grading Standards A tire information system that provides
consumers with ratings for a tire’s trac-
tion, temperature and treadwear. Ratings
are determined by tire manufacturers
using U.S. government testing procedures.
The ratings are molded into the sidewall of the tire.
Vehicle maximum load on the tire Load on an individual tire that is deter-
mined by distributing to each axle its
share of the maximum loaded vehicle
weight and dividing it by two. Winter driving
Before the onset of winter, have your vehi- cle winterized at an authorized electric
drive smart center.
This service includes:
R Check of anticorrosion and antifreeze
concentration.
R Addition of washer concentrate to the
water of the windshield/rear window.
Use a windshield washer concentrate
labeled for winter which is formulated
for temperatures below freezing point
(Y page 218).
R 12 V battery test. The capacity of the
12 V battery test drops with decreasing
ambient temperature.
R Tire change. Winter tires
G
WARNING
Winter tires with a tread depth of less than 1 / 6 in (4 mm) must be replaced. They are no
longer suitable for winter operation.
Always use winter tires at temperatures
below 45 ¦(7¥) and whenever wintry road
conditions prevail. Not all M+S rated tires provide special winter performance. Make
sure the tires you use show the mountain/
snowflake marking ion the tire side-
wall. These tires meet specific snow trac-
tion performance requirements of the Rub- ber Manufacturers Association (RMA) and
the Rubber Association of Canada (RAC) and
have been designed specifically for use in
snow conditions. Use of winter tires is the only way to achieve the maximum effective-
ness of the ABS and ESP ®
in winter opera-
tion.
For safe handling, make sure all mounted
winter tires are of the same make and have
the same tread design.
For information on winter tires for your
vehicle model, see the "Technical data"
section (Y page 216).
Always observe the speed rating of the win-
ter tires installed on your vehicle. If the
maximum speed for which your tires are
rated is below the speed rating of your
vehicle, you must place a notice to this
effect where it will be seen by the driver.
Such notices are available at your tire
dealer or any authorized electric drive
smart center. Snow chains*
! Remember that snow chains must always
be compatible with the tire sizes of a
vehicle. Snow chains that are approved
by smart are only permitted for the fol-
lowing tire size:
175/55 R15 on the rear axle. 146
Winter driving>> Operation.
* optional
keep in mind that a considerably higher
degree of effort is necessary to brake and
steer the vehicle. Adapt your driving
accordingly. Brakes
G
WARNING
Make sure not to endanger any other road
users when carrying out braking maneu-
vers.
Refer to the description of the hydraulic
brake assistant (Y page 47).
! Because the ESP ®
operates automati-
cally, the ignition must be switched off
when the parking brake is being tested
on a brake test dynamometer. Active
braking action through the ESP ®
may oth-
erwise seriously damage the brake sys-
tem which is not covered by the smart
Limited Warranty.
Brake pad wear or a leak in the brake system may be the reason for low brake fluid level
in the brake fluid reservoir.
The brake fluid level in the brake fluid
reservoir may be too low if the brake warn- ing lamp in the instrument cluster comes on
(Y page 23) although the parking brake is
released.
Have the brake system inspected immedi-
ately. Contact an authorized electric drive
smart center.
All checks and service work on the brake
system should be carried out by qualified
technicians only. Contact an authorized
electric drive smart center.
Only install brake pads and use brake fluid
recommended by smart. Inclines G
WARNING
Resting your foot on the brake pedal will
cause excessive and premature wear of the
brake pads.
It can also result in the brakes overheat-
ing, thereby significantly reducing their
effectiveness and your ability to stop the
vehicle in sufficient time to avoid an acci- dent.
Please observe the following guidelines to
avoid that the permitted maximum speed is
exceeded when driving on downhill grades:
R Do not move the gear selector lever to N.
R Recuperation is limited, if:
- the high-voltage battery is fully
charged or too cold
- the power electronics or the electric
motor is overheated.
When driving down long and steep grades, do not depress the brake pedal perma-
nently. Depress it in intervals instead to
reduce the vehicle speed.
High and low stresses After hard braking, it is advisable to drive
on for some time, rather than immediately
park, so that the air stream will cool down
the brakes faster.
If your brake system is normally only sub-
jected to moderate loads, you should occa- sionally test the effectiveness of the
brakes by applying above-normal braking
pressure at higher speeds. This will also
enhance the grip of the brake pads. G
WARNING
Make sure not to endanger any other road
users when carrying out these braking
maneuvers. 148
Driving instructions>> Operation.