check engine light SMART FORTWO 2016 User Guide

Problems with the engine
ProblemPossible causes/consequences and0050Solutions
The engine does not
start. The starter motor
can be heard.RThere is a malfunction in the engine electronics.
RThere is a malfunction in the fuel supply.
XSwitch off the engine before attempting to start the engine
again (Ypage 101).
XTry to start the engine again (Ypage 87). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
XConsult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 168).
If the engine does not start despite attempts to jump-start it:
XConsult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
XAllow the starter motor to cool down for approximately two
minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult a qualified specialist workshop.
The engine is not run-
ning smoothly and is
misfiring.There is a malfunction in the engine electronics or in a mechan-
ical component of the engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
XHave the cause rectified immediately at a qualified specialist
workshop.
The coolant tempera-
ture exceeds 230 ‡
(110 †). The red coolant
temperature warning
lamp comes on while the
engine is running. A
warning tone also
sounds. The Stop
Switch Off Enginemessage appears.
The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 153). Observe the warning notes
as you do so and add coolant if necessary.
90Driving
>> Driving and parking.

XCompletely insert the filler neck of the
fuel pump nozzle into the tank, hook in
place and refuel.
XOnly fill the tank until the pump nozzle
switches off.
iDo not add any more fuel after the pump
stops filling for the first time. Otherwise,
fuel may leak out.
Closing the fuel filler flap
XReplace the cap on the filler neck and turn
clockwise until it engages audibly.
XClose the fuel filler flap.
iClose the fuel filler flap before locking
the vehicle.
iIf you are driving with the fuel filler cap
open, the 00B6reserve fuel warning lamp
flashes. A message appears in the multi-
function display (
Ypage 125).
In addition, the 00B9Check Engine warning
lamp may light up (
Ypage 136).
For further information on warning and
indicator lamps in the instrument cluster,
see (
Ypage 136).
Refueling99
>> Driving and parking.
Z

more quickly and protecting them against
corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt
residue may form on the brake discs and brake
pads. This can result in a significantly lon-
ger braking distance.
RBrake occasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so.
RCarefully depress the brake pedal and the
beginning and end of a journey.
RMaintain a greater distance to the vehicle
ahead.
Servicing the brakes
!The brake fluid level may be too low, if:
Rif the red brake warning lamp lights up
in the instrument cluster and
Ryou hear a warning tone while the engine
is running
Observe additional warning messages in
the multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immedi-
ately. Consult a qualified specialist work-
shop to arrange this.
!A function or performance test should
only be carried out on a 2-axle dynamome-
ter. If you wish to operate the vehicle on
such a dynamometer, please consult a
qualified specialist workshop in advance.
You could otherwise damage the drive train
or the brake system.
!As the ESP®system operates automati-
cally, the engine and the ignition must be
switched off (the SmartKey must be in posi-
tion 0or 1in the ignition lock) if:
Rthe parking brake is tested using a brake
dynamometer (maximum 10 seconds).
Rthe vehicle is towed with the front axle
raised.
Braking triggered automatically by ESP
®
may seriously damage the brake system. All checks and maintenance work on the brake
system must be carried out at a qualified
specialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the function-
ality of your brakes at regular intervals.
When having brake pads/linings fitted, smart
recommends that you only use those which are
approved for smart vehicles or are of an
equivalent quality standard. Brake pads/
linings which have not been approved for
smart vehicles or which are not of an equiv-
alent quality could affect your vehicle's
operating safety.
smart recommends that you only use brake
fluid which is approved for smart vehicles or
is of an equivalent quality standard. Brake
fluid which has not been approved for smart
vehicles or which
is not of an equivalent
quality could affect your vehicle's operating
safety.
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth on the road surface, there is a danger of hydro-
planing occurring, even if:
Ryou drive at low speeds.
Rthe tires have adequate tread depth.
For this reason, in the event of heavy rain or in conditions in which hydroplaning may
occur, you must drive in the following man-
ner:
Rlower your speed.
Ravoid ruts.
Ravoid sudden steering movements
Rbrake carefully.
Driving on flooded roads
!Bear in mind that vehicles traveling in
front or in the opposite direction create
waves. This may cause the maximum per-
missible water depth to be exceeded.
Failure to observe these notes may result in damage to the engine, electrical systems
and transmission.
104Driving tips
>> Driving and parking.

Engine
Display messagesPossible causes/consequences and0050Solutions
00B9
Reduced Power SeeOperator's Manual
The engine is running in emergency mode. For example, the fuel
injection may be faulty.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
iIn some states, you must immediately visit a qualified spe-
cialist workshop as soon as the yellow Check Engine warning
lamp lights up. This depends on the locally applicable legal
requirements. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.
00EF
Malfunction VisitWorkshop
The battery monitoring is malfunctioning.
XVisit a qualified specialist workshop.
00EF
StopSeeOperator'sManual
The battery is not being charged.
Possible causes are:
Ra defective alternator
Ra torn poly-V-belt
Ra malfunction in the electronics
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
00B3
Stop Switch OffEngine
The oil pressure is too low. There is a risk of engine damage.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 100).
XCheck the oil level (Ypage 150).
XIf necessary, add engine oil (Ypage 150).
Information on approved engine oils can also be obtained from any
qualified specialist workshop.
124Display messages
>> On-board computer and displays.

Safety systems
ProblemPossible causes/consequences and0050Solutions
0075
The red restraint sys-
tem warning lamp is lit
while the engine is
running.The restraint system is faulty.
GWARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
XDrive on carefully.
XHave the restraint system checked at a qualified specialist
workshop immediately.
For further information about the restraint system, see
(
Ypage 29).
0027 (USA only)
004D (Canada only)
00E50025
The red brake system
warning lamp, the yel-
low ESP
®warning lamp
and the yellow ABS
warning lamp light up
while the engine is
running.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
0027 (USA only)
004D (Canada only)
The red brake system
warning lamp comes on
while the vehicle is
moving. A warning tone
also sounds.You are driving with the parking brake engaged.
XRelease the parking brake.
The warning lamp goes out and the warning tone ceases.
132Warning and indicator lamps in the instrument cluster
>> On-board computer and displays.

ProblemPossible causes/consequences and0050Solutions
00E5
The yellow ESP®warn-
ing lamp is lit while
the engine is running.
ESP®is not available due to a malfunction.
Other driving systems could be switched off automatically.
GWARNING
The brake system continues to function normally, but without the
functions listed above.
The braking distance in an emergency braking situation can thus
increase.
The brake lamps may not be functioning and thus no longer working
when braking.
If ESP
®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSecure the vehicle against rolling away (Ypage 100).
XObserve the additional display messages in the display.
XCheck that the brake lamps are working.
If the brake lamps are not working:
XConsult a qualified specialist workshop.
If the brake lamps are working:
XDrive on carefully.
XVisit a qualified specialist workshop.
^
The yellow distance
warning function warn-
ing lamp comes on
while the vehicle is
moving.
In addition the \
door warning lamp and
other warning lamps,
e.g. 00E5, light up.The central vehicle electronics system is malfunctioning.
After the engine is switched off:
Rdo not lock/unlock the doors using the remote control function of
the key
Ryou can no longer start the engine.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster135
>> On-board computer and displays.
Z

ProblemPossible causes/consequences and0050Solutions
^
The yellow distance
warning function warn-
ing lamp comes on
while the vehicle is
moving.The distance warning function is malfunctioning or temporarily
inoperative. Possible causes are:
Rthe smart logo in the radiator trim is dirty.
Rfunction is impaired due to heavy rain or snow.
Rthe radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
Rthe system is outside the operating temperature range.
RThe on-board voltage is too low.
If the causes listed above no longer apply, the distance warning
function is operational again.
If the distance warning lamp continues to light up, the distance
warning function electronics are malfunctioning.
XVisit a qualified specialist workshop.
00BA
The red distance warn-
ing lamp lights up
while the vehicle is in
motion. A warning tone
also sounds.You are approaching a vehicle or a stationary obstacle in your line
of travel at too high a speed.
XBe prepared to brake immediately.
XPay careful attention to the traffic situation. You may have to
brake or take evasive action.
Further information on the distance warning function (
Ypage 48).
Engine
ProblemPossible causes/consequences and 0050Solutions
00B9
The yellow Check
Engine warning lamp
flashes while the
engine is running.The ignition system is malfunctioning. The engine is misfiring,
for example, which means the catalytic converter could become
damaged.
XVisit a qualified specialist workshop immediately.
iIn some states, you must immediately visit a qualified spe-
cialist workshop as soon as the yellow Check Engine warning
lamp lights up. This depends on the locally applicable legal
requirements. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.
00B9
The yellow Check
Engine warning lamp
lights up while the
engine is running. The
engine power output is
also reduced.The engine is running in emergency mode. This may lead to a mal-
functioning of the fuel injection system, for example.
XDrive on carefully.
XVisit a qualified specialist workshop immediately.
iIn some states, you must immediately visit a qualified spe-
cialist workshop as soon as the yellow Check Engine warning
lamp lights up. This depends on the locally applicable legal
requirements. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.
136Warning and indicator lamps in the instrument cluster
>> On-board computer and displays.

ProblemPossible causes/consequences and0050Solutions
00B9
The yellow Check
Engine warning lamp
lights up while the
engine is running.There may be a malfunction, for example:
Rin the engine management
Rin the exhaust system
Rin the fuel system
Rwith the accelerator pedal sensor
XVisit a qualified specialist workshop immediately.
iIn some states, you must immediately visit a qualified spe-
cialist workshop as soon as the yellow Check Engine warning
lamp lights up. This depends on the locally applicable legal
requirements. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving.
00EF
The red battery warning
lamp is lit while the
engine is running. A
warning tone also
sounds.The battery is not being charged.
Possible causes are:
Ra defective alternator
Rthe battery is faulty
Ra torn poly-V-belt
Ra malfunction in the electronics
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
Warning and indicator lamps in the instrument cluster137
>> On-board computer and displays.
Z

Tires
ProblemPossible causes/consequences and0050Solutions
0077
You are driving and the
yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
In addition the\
door warning lamp and
other warning lamps,
e.g. 00E5, light up.The central vehicle electronics system is malfunctioning.
After the engine is switched off:
Rdo not lock/unlock the doors using the remote control function of
the key
Ryou can no longer start the engine.
XObserve the additional display messages in the display.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
0077
You are driving and the
yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit. A
warning tone also
sounds.The tire pressure in one or more tires has dropped suddenly.
GWARNING
If you drive with a flat tire, there is a risk of the following haz-
ards:
RA flat tire affects the ability to steer or brake the vehicle.
Ryou could lose control of the vehicle.
RContinued driving with a flat tire will cause excessive heat
build-up and possibly a fire.
There is a risk of an accident.
XStop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
XSecure the vehicle against rolling away (Ypage 100).
XCheck the tires and, if necessary, follow the instructions for a
flat tire (Ypage 161).
Warning and indicator lamps in the instrument cluster139
>> On-board computer and displays.
Z

Vehicle
ProblemPossible causes/consequences and0050Solutions
\
The red door warning
lamp comes on while the
vehicle is moving.
In addition, further
warning lamps light up,
such as 00E5.The central vehicle electronics system is malfunctioning.
After the engine is switched off:
Rdo not lock/unlock the doors using the remote control function of
the key
Ryou can no longer start the engine.
XObserve the additional display messages in the display.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driv-
ing under any circumstances.
XSecure the vehicle against rolling away (Ypage 100).
XConsult a qualified specialist workshop.
\
The red door warning
lamp is on.A door or the tailgate is open. If you are driving at speeds above
13 mph (20 km/h), an additional warning tone will sound.
XObserve the additional display messages in the display.
XPull over at a suitable place and stop the vehicle safely, paying
attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 100).
XClose all doors and the tailgate.
0052
The yellow power steer-
ing warning lamp is lit
while the engine is
running.The power steering is malfunctioning.
GWARNING
You may need to use more force to steer.
There is a risk of an accident.
XObserve the additional display messages in the display.
XCheck whether you are able to apply the extra force required.
XIf you are able to steer safely: carefully drive on to a qualified
specialist workshop.
XIf you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop.
Warning and indicator lamps in the instrument cluster141
>> On-board computer and displays.
Z