X
Use a windshield washer concentrate
labeled for summer and water for tem-
peratures above freezing point.
X Use a windshield washer concentrate
labeled for winter and water for temper-
atures below freezing point.
! Always use a windshield washer concen-
trate labeled for winter where tempera-
tures may fall below freezing point.
Failure to do so could result in damage
to the washer system/reservoir.
X Premix the windshield washer fluid in a
suitable container.
Observe mixing ratios depending on the
outside temperature (Y page 218).
X Use the tab to pull cap 0043upwards.
X Refill the windshield washer reservoir.
X Push cap 0043onto the windshield washer
reservoir.
X Remount the service flap and close it
(Y page 123). Brake fluid
G
WARNING
During vehicle operation, the boiling
point of the brake fluid is continuously
reduced through the absorption of moisture
from the atmosphere. Under extremely
strenuous operating conditions, this mois-
ture content can lead to the formation of
bubbles in the system, thus reducing the
system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle’s Mainte-
nance Booklet for replacement interval.
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.
! If you find that the brake fluid in the
brake fluid reservoir has fallen to the minimum mark or below, have the brake
system checked for brake pad thickness
and leaks immediately. Contact an
authorized electric drive smart center
immediately. Do not add brake fluid as
this will not solve the problem.
X Remove the service flap and insert it on
the front of the vehicle (Y page 123).
The brake fluid reservoir is located in the
front compartment on the passenger side. Checking brake fluid level
X
Perform a visual check of the brake fluid
reservoir 0043.
The brake fluid level is correct when it
is between the minimum mark and the
maximum mark.
R If the brake fluid level has fallen
slightly below the minimum mark,
drive to an authorized electric drive
smart center.
R If the brake fluid level has fallen sig-
nificantly below the minimum mark,
call Roadside Assistance or an author-
ized electric drive smart center.
X Remount the service flap and close it
(Y page 123). Tires and wheels
Safety notes
Contact an authorized electric drive smart
center for information on tested and rec- Tires and wheels
127>> Operation. Z
X
If you have overfilled the tire, release
tire inflation pressure by pushing the
metal stem of the valve with e.g. a tip of
a pen. Then recheck the tire inflation
pressure with the tire gauge.
X Install the valve cap.
X Repeat this procedure for each tire.
Tire Pressure Monitoring System
(TPMS)* Your vehicle may be equipped with a
Tire
Pressure Monitoring System (TPMS).
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 different
size 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- Tires and wheels
131>> Operation.
* optional Z
X
Press Restarting TPMS button 0043.
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.
After driving a few minutes the system
verifies that the current tire inflation
pressures are within the system’s speci-
fied range. Afterwards the current tire
inflation pressures are accepted as refer-
ence pressures and then monitored. Maximum tire inflation pressure
G
WARNING
Never exceed the max. tire inflation pres-
sure. Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated
tires wear excessively and/or unevenly,
adversely affect handling and energy con-
sumption, and are more likely to fail from
being overheated.
Do not overinflate tires. Overinflated
tires can adversely affect handling and
ride comfort, wear unevenly, increase
stopping distance, and result in sudden
deflation (blowout) because they are more
likely to become punctured or damaged by
road debris, potholes etc. i
For illustration purposes only. Actual
data on tires are specific to each vehicle
and may vary from data shown in above
illustration.
This is the maximum permissible tire
inflation pressure 0043for the tire.
Always follow the recommended tire infla-
tion pressure (Y page 128) for proper tire
inflation. Loading the vehicle
Two labels on your vehicle show how much
weight it may properly carry.
1) The Tire and Loading Information plac- ard can be found on the driver’s door
B‑pillar. This placard tells you impor-
tant information about the number of
people that can be in the vehicle and
the total weight that can be carried in
the vehicle. It also contains informa-
tion on the proper size and recom-
mended tire inflation pressures for the
original equipment tires on your vehi-
cle.
2) The certification label, also found on the driver’s door B‑pillar, tells you
about the gross weight capacity of your
vehicle, called the Gross Vehicle
Weight Rating (GVWR). The GVWR
includes the weight of the vehicle, all
occupants, automotive fluids and
cargo. The certification label also
tells you about the front and rear axle
weight capacity, called the Gross Axle Tires and wheels
133>> Operation. Z
systems. In this case, it is important to
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 48).
! 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.
Standing water
Do not drive through flooded areas or water
of unknown depth. Before driving through
water, determine its depth. Never acceler-
ate before driving into water.
If you must drive through standing water,
drive slowly to prevent water from entering
R the front compartment
R the engine compartment
R the passenger compartment
! Water in these areas could cause dam-
age to
R electrical components
R electrical wiring
R the drive system
R the high-voltage battery
Any such damage is not covered by the
smart Limited Warranty. Passenger compartment
G
WARNING
Always fasten items being carried as
securely as possible.
In an accident, during hard braking or sud-
den maneuvers, loose items thrown around
inside the vehicle may injure vehicle
occupants.
The cargo compartment is the preferred
place to carry objects. Control and operation of radio trans-
mitters
Radio and telephone G
WARNING
Please do not forget that your primary
responsibility is to drive the vehicle
safely. Only operate the radio or tele- phone
8
if road, weather and traffic condi-
tions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approx-
imately 14 m) every second.
Telephones and two-way radios G
WARNING
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e.
without being connected to an external
antenna) from inside the vehicle while the
drive system is switched on. Doing so could
lead to a malfunction of the vehicle’s elec-
tronic system, possibly resulting in an
accident and/or serious personal injury.
Radio transmitters, such as a mobile phone
or a citizens band unit should only be used
inside the vehicle if they are connected to
an antenna that is installed on the outside
of the vehicle.
Refer to the radio transmitter operation
instructions regarding use of an external
antenna. Coolant temperature
During severe operating conditions and
stop-and-go city traffic, the coolant tem-
perature may rise.
! Excessive coolant temperature causes
the red coolant temperature warning
lamp 00AC in the instrument cluster to
come on.
The drive system should not be operated
with the red coolant temperature warn-
ing lamp 00ACilluminated. Doing so may
cause serious damage to the drive system
and the high-voltage battery, which is
not covered by the smart Limited War-
ranty.
8 Observe all legal requirements. 152
Driving instructions>> Operation.
Display messages
The following display messages appear in the multifunction display (Y page 83).
You can confirm certain display messages.
X Confirming messages: Press the OK button on the control lever briefly (Y page 83).Display messages Possible causes/consequences and
0050
0050Solutions 00AC
Switch Off Engine Switch Off Engine The coolant is too hot.
In addition, the
00ACwarning lamp in the instrument cluster
lights up and a warning signal sounds.
X Stop the vehicle immediately as soon as it is safe to do so.
X Switch off the drive system immediately.
X Engage the parking brake.
X Make sure the air supply for the radiator is uninterrupted.
X Only start the drive system again after the display message
disappears. You could otherwise damage the drive system. 0027
(USA only)
004D (Canada only)
Release Parking Release Parking
Brake Brake You are driving with the parking brake engaged.
In addition, the
0027(USA only), 004D(Canada only) warning
lamp in the instrument cluster lights up and a warning signal
sounds.
X Release the parking brake. 0027
(USA only)
004D (Canada only)
Brake System See Brake System See
Operator's Manual Operator's Manual There is a slight malfunction in the vacuum supply of the brak-
ing system.
X
When braking, continue to depress the brake pedal.
X Contact an authorized electric drive smart center. 0027
(USA only)
004D (Canada only)
Brake Malfunction Brake Malfunction
0096Service Required Service Required There is a serious malfunction in the vacuum supply of the
braking system.
In addition, a warning signal sounds.
X
Contact an authorized electric drive smart center. 0068
Shift Shift
to
toN
Nor
or P
Pto
to
Start
Start You have attempted to start the engine while the automatic
transmission was in reverse gear
Ror drive position D.
X Shift the automatic transmission into park position Por
neutral position N.
X Make sure that Nor Pis shown in the multifunction display. Display messages
161>> Practical hints. Z
Display messages Possible causes/consequences and
0050
0050Solutions 0068
Transmission Not Transmission Not
in P in P The driver's door is open and the gear selector lever is in
position
R,Nor D.
In addition, a warning signal sounds.
X Move the gear selector lever to P.0068
Malfunction Serv. Malfunction Serv.
Req. Req. There is a malfunction in the coolant compressor or in the
heating/coolant circuit.
X
Contact an authorized electric drive smart center. 0068
Battery Power Too Battery Power Too
Low Low The outside temperature is too low. The full battery capacity
is not available.
The vehicle does not start.
X
Charge the high‑voltage battery (Y page 112).00FF
High-voltage Bat‐ High-voltage Bat‐
tery at Reserve tery at Reserve
Level Level The high‑voltage battery has reached reserve level.
X
Charge the high‑voltage battery (Y page 112).0051
Charge HV Battery Charge HV Battery
Immediately Immediately The charge level of the high‑voltage battery is below 5 %.
In addition, a warning signal sounds.
X
Charge the high‑voltage battery (Y page 112).0075
Engine Engine
Restart
Restart Not
Not
Possible
Possible There is a serious malfunction in the drive system. The drive
system can no longer be started.
In addition, a warning signal sounds.
X
Do not restart the drive system.
X Contact an authorized electric drive smart center. 0075
High-Voltage Sys‐ High-Voltage Sys‐
tem tem
0096Service Required
Service Required There is a malfunction in the drive system, the electric motor
or the high‑voltage battery. There is a high‑voltage safety
problem.
In addition, the
0075warning lamp in the instrument cluster
lights up and a warning signal sounds.
X Contact an authorized electric drive smart center. 00ED
Reduce Reduce
0096Speed
Speed The vehicle speed exceeds 84 mph (135 kmh).
In addition, a warning signal sounds.
X
Reduce the speed.
The message disappears. 162
Display messages>> Practical hints.
Display messages Possible causes/consequences and
0050
0050Solutions 00ED
Drive System Drive System
0096Service Required
Service Required There is a malfunction in the drive system, the electric motor
or the high‑voltage battery.
In addition, the yellow
00EDwarning lamp in the instrument
cluster lights up.
X Contact an authorized electric drive smart center. 00ED
Drive System Drive System
0096Switch
Switch Engine EngineOff
Off There is a malfunction in the drive train. If the drive system
continues to run, the drive train can become damaged.
In addition, the red
00EDwarning lamp in the instrument clus-
ter lights up and a warning signal sounds.
X Switch off the drive system.
X Do not continue driving.
X Contact an authorized electric drive smart center. 0051
Do Not Tow Do Not Tow
(Away)
(Away) Either the drive or the high‑voltage system is faulty.
In addition, the
0075warning lamp in the instrument cluster
lights up.
X It is recommended to have the vehicle transported by a
qualified specialist workshop.
Do not tow the vehicle on its own wheels. 0051
Charging Charging
Not
NotPossi‐
Possi‐
ble
ble There is a malfunction in the on-board charger. The high‑volt-
age battery cannot be charged.
X
Contact an authorized electric drive smart center. 0051
Parking Lock Inac‐ Parking Lock Inac‐
tive tive The gear selector lever is in position
P, but the parking lock
is not detected.
In addition, a warning signal sounds.
X Apply the parking brake.
X Move the gear selector lever to another position, e.g. to R.
X Move the gear selector lever to Pagain. 00DA
Driver´s Door Ajar Driver´s Door Ajar The driver’s door is open.
X
Close the driver’s door. 00DB
Door Ajar Door Ajar The passenger door is open.
X
Close the passenger door. 00D9
Tailgate Open Tailgate Open A tailgate or the rear soft top
9
is open.
X Close the tailgates or the rear soft. 9
cabriolet only. Display messages
163>> Practical hints. Z