2012 SMART FORTWO COUPE engine

Vehicle
Problem Possible causes/consequences and
M Solutions#
The battery
indicator lamp
illuminates
while driving
or does not go
out after the
engine is
started. The alternator is malfunctioning. The battery is no longer
charged.
X
Stop the vehicle immediately in a safe location.
X Do not continue to drive.
X Turn off the engine.
X Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized smart center. The poly-V-belt is broken. The battery is no longer charged.
X
Stop the vehicle immediately in a safe location.
X Do not continue to drive.
X Turn off the engine.
X Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized smart center. !
Among other possible causes, the poly-V-belt could be broken. Do not continue to
drive.
Otherwise, the engine will overheat due to an inoperative water pump which may
result in damage to the engine. 168
What to do if ...>> Practical hints.

Problem Possible causes/consequences and
M Solutions# !
The turn signal
indicator lamp(s)
flashes at double
frequency. One of the turn signals is malfunctioning.
X
Replace the bulb as soon as possible ( Y page 179).
or
X Have the turn signal checked at an authorized smart center
as soon as possible. ®
The fuel cap
indicator lamp
comes on when
the engine is
running. The fuel cap may not be closed properly or the fuel system may
be leaky.
X
Check the fuel cap ( Y page 116).
X If it is not closed properly: Close the fuel cap.
X If it is closed properly: Have the fuel system checked at an
authorized smart center. Engine
Problem Possible causes/consequences and
M Solutions?
The red coolant
temperature
warning lamp
illuminates
while the
engine is
running. The coolant is too hot.
X
Stop the vehicle immediately in a safe location.
X Do not continue to drive.
X Turn off the engine.
X Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized smart center. The coolant level has fallen below the marking bar on the
coolant reservoir (Y page 122).
X
Add coolant as required.
X Have the coolant system checked for leaks at an authorized
smart center. G
WARNING
Driving when your engine is overheated can cause some fluids which may have leaked into
the engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening
the engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of
the vehicle and do not stand near the vehicle until the engine has cooled down.
! Among other possible causes, the poly-V-belt could be broken. Do not continue to
drive.
Otherwise, the engine will overheat due to an inoperative water pump which may
result in damage to the engine. 170
What to do if ...
>> Practical hints.

Problem Possible causes/consequences and
M Solutions;
The engine
malfunction
indicator lamp
illuminates
while driving. There is a malfunction in the system.
X
Have the vehicle checked at an authorized smart center
immediately. i
Some states may by law require you to visit a workshop as soon as the engine
malfunction indicator lamp comes on. Check local requirements. Problem Possible causes/consequences and
M Solutions5
The engine oil
pressure
indicator lamp
illuminates
while driving. The engine oil pressure is low.
X
Stop the vehicle immediately in a safe location.
X Do not continue to drive.
X Turn off the engine.
X Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized smart center. 5
The engine oil
pressure
indicator lamp
goes out before
the engine
starts. The engine oil pressure indicator lamp has failed.
X
Check the engine oil level.
X Have the system checked at an authorized smart center. !
The engine oil pressure indicator lamp should not be ignored. Extended driving with
the engine oil pressure indicator lamp illuminated could result in serious engine
damage that is not covered by the smart Limited Warranty. What to do if ...
171
>> Practical hints. Z

G
WARNING
If the 4 0 indicator lamp does not illuminate or remains out with the weight of
a typical 12‑month‑old child in a standard child restraint or less on the passenger seat, do
not transport a child on the passenger seat until the system has been repaired. Engine
Problem Possible causes/consequences and
M SolutionsThe engine does not
start.
X
Check 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.
X
Wait for a few seconds.
X Repeat the starting procedure.
Remember that extended starting attempts can drain the
vehicle battery. The engine does not
start after several
starting attempts.
X
Engage the parking brake when leaving the vehicle.
X Contact Roadside Assistance or an authorized smart center. Loss of key
Problem Possible causes/consequences and
M SolutionsYou lose a key. X
Have the key deactivated at an authorized smart center.
X Report the loss of the key to your car insurance company
immediately.
X If necessary, have the mechanical lock replaced.
Your authorized smart center will be glad to supply you with a
replacement following an identity check. 174
What to do if ...
>> Practical hints.

Acoustic warning signals
Problem Possible causes/consequences and
M SolutionsOnce the anti-theft
warning system* has
been armed, a visual
and audible alarm is
triggered. The alarm is triggered when
R
someone opens a door or the tailgate
R the driver’s door is unlocked with the key (Y page 176)
R the vehicle’s interior is entered
R there is motion inside the vehicle
R the vehicle is raised
To cancel the alarm:
X Insert the key in the starter switch.
X Turn the key to starter switch position 1.
or
X Press button # or * on the key.A warning signal
sounds. The door is opened while a gear is engaged with the engine
running and neither the brake nor accelerator pedals are
depressed.
X
Close the driver’s and passenger door.
X Move the gear selector lever to park position P.
or
X Turn off the engine. You open the driver’s door with the key in starter switch
position 0 to remind you not to leave the key in the vehicle.
X
Close the driver’s door.
or
X Remove the key from the starter switch. A warning signal
sounds. The seat belts are not fastened when the engine is started. For
details, see seat belt telltale (
Y page 165).
X Fasten your seat belts. What to do if ...
175>> Practical hints.
* optional Z

Problem Possible causes/consequences and
M SolutionsA warning signal
sounds when parking. You have not engaged the parking brake before releasing the
brake pedal, turning off the engine, and switching off the
ignition.
X
Switch on the ignition to deactivate the acoustic warning.
X Engage the parking brake.
X Make sure the gear selector lever is in park position P.
X Turn the key to starter switch position 0.
X Remove the key from the starter switch.
For safety, it is important that you perform the parking
procedure as described (Y page 80). You can hear a
continuous
noise from
the front axle when
braking. The vehicle is equipped with a mechanical/acoustic brake pad
indicator.
X
Have the brake pads checked at an authorized smart center. Unlocking/locking manually
Unlocking the vehicle
You can unlock the driver’s door and the
fuel filler flap by unlocking the driver’s
door using the key. The lock cylinder is
fitted with a cap.
X Press button # on the key.
The anti-theft warning system* is
disarmed.
i If the transmitter battery in the key is
discharged, the anti-theft warning
system* can no longer be disarmed with
button # on the key.
For replacing the transmitter battery
(Y page 177).
Unlocking the vehicle with the key and
opening a door or the tailgate will
trigger the anti-theft warning system*
(Y page 48).
To cancel the alarm:
X Insert the key in the starter switch.
X Turn the key to starter switch position 1. X
Remove cap : from lock cylinder ;.
X Unlock the driver’s door.
The

driver’s door and the fuel filler flap
are unlocked.
i To unlock the vehicle centrally press
the

central unlocking switch in the upper
center console ( Y page 27). Locking the vehicle
If
you can no longer lock the vehicle using
the remote control and you do not have a
spare transmitter battery at hand, please
proceed as follows: 176
Unlocking/locking manually
>> Practical hints.
* optional

Left bulb carrier with bulb sockets (right bulb
carrier in reverse)
:
Retaining tab
= Brake, tail, turn signal and side marker
lamp bulb
? Backup lamp bulb
X Depending on which bulb needs to be
replaced, press gently onto bulb =
or ? and turn it counterclockwise.
X Pull the bulb out of the bulb socket.
X Installing: Insert the new bulb into the
bulb socket.
X Press gently onto the bulb and turn it
clockwise until it engages.
X Insert the bulb carrier into the tail lamp
housing.
X Press gently onto the bulb carrier.
Let retaining tab : engage.
X Fold the damping material backward, if
necessary.
X Reinstall the side cover in the cargo
compartment. High-mounted brake lamp X
Removing: Unscrew retaining screws :.
X Remove high-mounted brake lamp ?.
X Detach electrical connector ;
from bulb
socket =.
X Turn the bulb counterclockwise and pull
it out of its socket.
X Installing: Install in the reverse order.
License plate lamps G
WARNING
High outside temperature, stop-and-go
traffic, driving on long uphill grades, or
driving

at high engine speed may increase
the temperature in the engine
compartment. Therefore the area around the
air slots in the rear apron may be hot. Let
the engine cool off before touching this
area to prevent burns. Replacing bulbs
183
>> Practical hints. Z

X
Removing: Fold the wiper arm away from
the
rear window until you feel it engage.
X Fold wiper blade :
away from the wiper
arm in direction of arrow ; until it
disengages from its mounting.
X Detach wiper blade :.
X Installing:
Push the new wiper blade onto
the wiper arm until you feel it engage.
X Fold the wiper blade into a position
parallel to the wiper arm.
X Fold the wiper arm backward to rest on
the rear window.
Make sure to hold on to the wiper when
folding the wiper arm back.
! Make sure the wiper blade is properly
installed. An improperly installed
wiper blade may cause rear window
damage. Adjusting the washer jet nozzles
:
Front washer jet nozzles
; Rear washer jet nozzles
X Adjusting: Use a needle to move washer
jet nozzles : or ; left, right, up, or
down.
i Check the setting of the washer jet
nozzles at regular intervals. The washer
jet nozzles are correctly set when the
water

jet hits the windshield or the rear
window approximately in the center. Flat tire
Preparing the vehicle
Upon experiencing any type of problem
with the vehicle’s tires, switch on the
hazard warning flasher, carefully slow
down and exit the roadway in a cautious
manner.
X Park the vehicle at a safe distance from
moving traffic on a hard, flat surface
when possible.
X Make sure the tire valve of the damaged
tire

is located below the horizontal axle
of the wheel hub.
X Engage the parking brake.
X Turn the steering wheel so that the front
wheels are in a straight ahead position.
X Move the gear selector lever to park
position P.
X Turn off the engine.
X Remove the key from the starter switch
and take the key with you.
i Open
door only when conditions are safe
to do so.
X Have any passenger exit the vehicle at a
safe distance from the roadway. Using the tire repair kit
! Depending

on the type of damage on the
tire, the tire sealant could damage the
sensor of the Tire Pressure Monitoring
System (TPMS)*. Such damage is not
covered by the smart Limited Warranty.
When having the damaged tire replaced,
also have the TPMS sensors* checked for
proper function. When the sensor is
damaged, the TPMS* will not function
properly. The sensor must then be
replaced at an authorized smart center as
soon as possible.
i Depending on production date of your
vehicle, it will be equipped with version
1 or version 2 of the tire repair kit. 186
Flat tire
>> Practical hints.
* optional