
EngineProblemPossible causes/consequences and 0050 SolutionsThe engine does not
start.XCheck if
R the gear selector lever is in park position P
R the brake pedal has been depressed
R the transmission position indicator is on P or NThe engine does not
start within
4 seconds.XWait for a few seconds.XRepeat the starting procedure.
Remember that extended starting attempts can drain the
vehicle battery.The engine does not
start after several
starting attempts.XEngage the parking brake when leaving the vehicle.XContact Roadside Assistance or an authorized smart center.
Loss of key
ProblemPossible causes/consequences and 0050 SolutionsYou lose a key.XHave the key deactivated at an authorized smart center.XReport the loss of the key to your car insurance company
immediately.XIf necessary, have the mechanical lock replaced.
Your authorized smart center will be glad to supply you with a
replacement following an identity check.
160What to do if ...>> Practical hints.
451_AKB; 3; 22, en-USd2ureepe,Version: 2.11.8.12009-07-27T09:36:34+02:00 - Seite 160

XAfter attaining a tire inflation pressure
of at least 26 psi (1.8 bar), press 0 on
electric air pump switch 006E.
The electric air pump is switched off.XTurn the key in the starter switch to
position 0.XUnscrew the end of filler hose 0088 from
tire valve 0072.GWarning!
The filler hose may still be hot.
Please exercise appropriate caution.
XPlug filler hose with the stopper.XTire sealant container 0070 remains
screwed onto flange 0071.XPlace the tire repair kit securely in the
vehicle.XDrive off immediately.
The tire sealant will distribute itself
evenly inside the tire.GWarning!
Do not exceed vehicle speed of 50 mph
(80 km/h). A tire sealant repair is not
designed to operate at higher speeds.
The sticker must be attached on the
instrument cluster where it will be easily
seen by the driver.
Vehicle handling characteristics of a tire
sealant repaired tire may change. Adapt
your driving accordingly.
XAfter driving for about 1.8 miles (3 km)
or ten minutes, take all of the
appropriate safety precautions and then
take the tire repair kit from the vehicle.XScrew the end of filler hose 0088 onto tire
valve 0072.XCheck the tire inflation pressure using
pressure gauge 0047.GWarning!
If tire inflation pressure has fallen below
20 psi (1.3 bar) do not continue to drive the
vehicle.
Park your vehicle safely away from the
roadway and contact the nearest smart
center or call Roadside Assistance.
Have the damaged tire replaced.
XIf the tire inflation pressure is at least
20 psi (1.3 bar), inflate or deflate the
tire to correct tire inflation pressure
(see Tire and Loading Information
placard located on the driver’s door
B‑pillar).
R To increase the tire inflation
pressure: Switch on the electric air
pump.
R To decrease the tire inflation
pressure: Open vent screw 008A. Recheck
the tire inflation pressure with the
electric air pump’s pressure gauge.XAfter checking the tire inflation
pressure, unscrew the end of filler
hose 0088 from tire valve 0072.XPlug filler hose with the stopper.XPlace the tire repair kit securely in the
vehicle.XScrew the valve cap onto the tire valve.
! The manufacturer is unable to
guarantee that all tire punctures can be
repaired with the tire repair kit, in
particular cuts or perforations larger
than approximately 0.16 in (4 mm) or away
from the tire’s tread. The manufacturer
is not liable for damage sustained
through improper use of the tire repair
kit.
GWarning!
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated
tires wear excessively and/or unevenly,
176Flat tire>> Practical hints.
451_AKB; 3; 22, en-USd2ureepe,Version: 2.11.8.12009-07-27T09:36:34+02:00 - Seite 176

XPosition jack 0046 under take-up
bracket 0047 so that it is always vertical
as seen from the side, even if the vehicle
is parked on an incline.
The take-up brackets are identified by
the embossed recesses in the area of the
door sills.
! Only position the jack on the
designated take-up brackets. Otherwise,
the vehicle could be damaged.
XJack up the vehicle until the wheel is a
maximum of 1.2 in (3 cm) from the ground.XUnscrew and remove the wheel bolts.
! Do not place wheel bolts in sand or dirt.
This could result in damage to the wheel
bolts and wheel hub threads.
XRemove the wheel.
Mounting the wheel
GWarning!
Always replace wheel bolts that are
damaged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact
an authorized smart Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly
tightened wheel bolts can cause the wheel
to come off. This could cause an accident.
Be sure to use the correct wheel bolts.GWarning!
Only use genuine smart wheel bolts. Other
wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle
could fall off the jack.
XClean contact surfaces of wheel and wheel
hub.
! To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt.
XGuide the wheel onto the wheel hub and
push it on.XInsert two wheel bolts and tighten them
slightly.XVehicles with wheel trim cap on steel
rim: Attach the wheel trim cap so that it
is held by the two wheel bolts.XInstall last wheel bolt and tighten it
slightly.XLower the vehicle until the vehicle is
resting fully on its own weight.XRemove the jack.XTighten the wheel bolts. Observe a
tightening torque of 80 lb-ft (110 Nm).GWarning!
Have the tightening torque checked after
changing a wheel. The wheels could come
Wheel change179>> Practical hints.451_AKB; 3; 22, en-USd2ureepe,Version: 2.11.8.12009-07-27T09:36:34+02:00 - Seite 179Z

start power by an external battery or
starter pack.
R Jump starting should only be performed
when the engine and catalytic converter
are cold.
R Do not start the engine if the battery is
frozen. Let the battery thaw out first.
R Only jump start from batteries with the
same voltage rating (12 V). Jump starting
with a more powerful battery could
damage the vehicle’s electrical system.
Such damage will not be covered by the
smart Limited Warranty.
R Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.
R Always make sure the jumper cables are
not on or near pulleys, fans or other parts
that move when an engine is started or
running.
R Should the battery be drained
completely, let the donating power
source charge the vehicle for several
minutes before reattempting the
starting process.GWarning!
Keep flames or sparks away from battery. Do
not smoke.
Observe all safety instructions and
precautions when handling automotive
batteries.
Jump start assistance
Your vehicle’s battery is located in the
passenger footwell below the footrest
( Y page 182).
For jump starting, use the terminals of the
battery, keeping the leads connected.
XMake sure the two vehicles do not touch.XSwitch off all electrical consumers.XEngage the parking brake.XMove the gear selector lever to park
position P.XTurn off the engine.XGet access to the battery in the passenger
footwell ( Y page 181).XRemove the positive terminal cover.184Jump starting>> Practical hints.
451_AKB; 3; 22, en-USd2ureepe,Version: 2.11.8.12009-07-27T09:36:34+02:00 - Seite 184

GWarning!
With the engine not running, there is no
power assistance for the brake and
steering* 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.
! Do not tow the vehicle with the front
axle raised. Doing so may cause serious
damage to the brake system which is not
covered by the smart Limited Warranty.
! Before towing the vehicle observe the
following instructions:
R Do not tow with sling-type equipment
attached to suspension parts. This may
cause damage to the radiator and other
supports if towing on a bumpy road.
R Towing the vehicle should only be done
using the properly installed towing
eye bolt. Never attach a tow cable, tow
rope, or tow rod to the vehicle chassis,
frame, or suspension parts.
! Make sure the ignition is switched off
while towing the vehicle. Doing
otherwise may result in
R the ESP ®
being activated. Active
braking action through the ESP ®
may
seriously damage the brake system
which is not covered by the smart
Limited Warranty.
R a discharged battery.
! Make sure the gear selector lever is in
neutral position N while towing the
vehicle. Doing otherwise may result in
significant transmission damage.
! Towing the vehicle with a luggage
rack* mounted is not permissible. The
vehicle must not be towed by the luggage
rack*.
i If the battery is disconnected or
discharged, the gear selector lever will
remain locked in park position P.
Contact an authorized smart center for
assistance or call Roadside Assistance.
Towing eye bolt
The towing eye bolt is located in the
passenger footwell under the carpet.
XUnscrew the carpet holder in the
passenger footwell ( Y page 148).XLift the carpet.XTake out towing eye bolt 0046.
Covers
Depending of whether you are towing a
vehicle or being towed, the towing eye bolt
can be screwed into threaded holes which
are located behind covers on the front and
rear bumper.
Front cover
186Towing>> Practical hints.* optional451_AKB; 3; 22, en-USd2ureepe,Version: 2.11.8.12009-07-27T09:36:34+02:00 - Seite 186