2016 SMART FORTWO check engine

Useful information
i
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's Man- ual. Country-specific differences are pos-
sible. Bear in mind that your vehicle may
not feature all functions described here.
This also applies to safety-relevant sys-
tems and functions.
iRead the information on qualified spe-
cialist workshops: (Ypage 20).
Checking service products
Engine compartment (rear)
Engine compartment cover
GWARNING
The engine compartment cover may become
very hot. If you remove the cover to do work on the engine compartment, there is a risk
of injury!
Allow the engine to cool down and then
remove the engine compartment cover after
cooling has taken place.
GWARNING
Combustion engines emit poisonous
exhaust gases such as carbon monoxide. If
the engine compartment cover has not been installed correctly, when the engine is
running, particularly if the vehicle is
moving, exhaust fumes could enter the
passenger compartment. There is a risk of
poisoning.
Always switch off the engine before remov-
ing the engine compartment cover. Make
sure that the engine compartment cover has
been installed correctly.
XTo open: apply the parking brake.
XSelect a gear.
XSwitch the ignition off.
XRemove the SmartKey from the ignition
lock.
XOpen the upper and lower tailgate
(Ypage 57).
XFor vehicles with the subwoofer: remove the
subwoofer (Ypage 149).
XRemove luggage compartment cover 0043if
necessary (Ypage 144).
XHold the carpet on the right and left sides
and fold upwards.
XVehicles with a trunk cover: attach the hook to upper bracket of trunk cover 0043
(
Ypage 144).
XUnscrew screws 0087from engine compart-
ment cover 0044manually.
XRemove engine compartment cover 0044.
XTo close:slide engine compartment
cover 0044forward as far as it will go.
XRetighten screws 0087manually.
XVehicles with a trunk cover: unhook the
hooks.
XPut the carpet back into the vehicle.
XFold down the carpet and push it under the
side paneling.
XFor vehicles with the subwoofer: fit the
subwoofer again (Ypage 149).
XClose the tailgate.
Engine oil
General notes
Depending on your driving style, the vehicle
consumes up to 0.55 US qt (0.5 liters) of oil per
600 miles (1000 km). The oil consumption may
be higher than this when the vehicle is new or
if you frequently drive at high engine speeds.
Checking service products149
>> Maintenance and care.
Z

When checking the oil level:
Rpark the vehicle on a level surface.
Rthe engine should be switched off for
approximately 5 minutes if the engine is at
normal operating temperature
Rif the engine is not at normal operating
temperature, e.g. if the engine was only
started briefly, wait approximately
30 minutes before carrying out the meas-
urement
Checking the oil level using the oil dip-
stick
GWARNING
Certain components in the engine compart- ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a risk of injury.
Where possible, let the engine cool down
and touch only the components described in
the following.
GWARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
GWARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or
start again suddenly when the ignition is
off. There is a risk of injury.
If you need to do any work inside the engine compartment:
Rswitch off the ignition
Rnever reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area
Rremove jewelry and watches
Rkeep items of clothing and hair, for
example, away from moving parts
XOpen the engine compartment cover
(Ypage 149).
Example
XPull oil dipstick 0043out of the dipstick
guide tube.
XWipe off oil dipstick 0043.
XSlowly slide oil dipstick 0043into the guide
tube to the stop, and take it out again.
If the level is between MIN mark 0087and MAX
mark 0044, the oil level is correct.
Adding engine oil
GWARNING
Certain components in the engine compart- ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a risk of injury.
Where possible, let the engine cool down
and touch only the components described in
the following.
GWARNING
If engine oil comes into contact with hot
components in the engine compartment, it
may ignite. There is a risk of fire and
injury.
Make sure that engine oil is not spilled
next to the filler neck. Let the engine cool down and thoroughly clean the engine oil
off the components before starting the
engine.
150Checking service products
>> Maintenance and care.

HEnvironmental note
When adding oil, take care not to spill any.
If oil enters the soil or waterways, it is
harmful to the environment.
!Do not add too much oil. adding too much
engine oil can result in damage to the
engine or to the catalytic converter. Have
excess engine oil siphoned off.
You will find further information on engine
oils you can use in the "Technical data" sec-
tion (
Ypage 209).
XTurn cap 0043counter-clockwise and remove
it.
XAdd engine oil.
If the oil level is at or below the MIN mark on the oil dipstick, top up once with a max-
imum of 1.1 US qt (1 l) of engine oil.
XReplace cap 0043on the filler neck and turn
clockwise.
Ensure that the cap locks into place
securely.
XCheck the oil level again with the oil dip- stick (Ypage 150).
Front compartment
Service cover
Important safety notes
GWARNING
If the service cover is not locked, it may
come loose during driving and block your
view or endanger other road users. There is
a risk of an accident and injury.
Therefore, make sure that the service cover
is locked before every journey.
GWARNING
If the windshield wipers begin to operate
while the service cover is open, there is a
danger of injury from the wiper arms. There
is a risk of injury.
Always switch off the windshield wipers
and the ignition before opening the ser-
vice cover.
!To ensure unhindered air intake, care-
fully remove any snow or dirt from the ven- tilation slots above the service cover.
To prevent it from becoming damaged or
dirty, the service cover can be removed and
hung on the front of the vehicle.
The service cover is attached to the rear side
of the vehicle body with a strap.
XPark the vehicle on a flat, level surface.
XApply the parking brake.
XSelect a gear.
XSwitch the ignition off.
Removing
XTo unlock: remove lock cover 0043(driver's
side only) with the key.
XInsert the key into the lock and turn it to
position 0092.
Checking service products151
>> Maintenance and care.
Z

Coolant
Important safety notes
GWARNING
The cooling system is pressurized, partic- ularly when the motor is warm. If you open
the cap, you could be scalded if hot coolant
sprays out. There is a risk of injury.
Let the engine cool down before you open
the cap. Wear gloves and eye protection.
Slowly open the cap to relieve pressure.
Checking the coolant
The coolant expansion tank is in the area
under the service cover.
XOpen the service cover (Ypage 151).
XLet the coolant cool down for at least
30 minutes.
XPark the vehicle on a level surface.
Only check the coolant level when the vehi-cle is on a level surface and the engine has
cooled down.
XCheck the reservoir visually.
The fluid level must be between MIN and
MAX.
Adding coolant
XCover cap 0043of coolant expansion tank 0044
with a cloth.
XSlowly turn cover cap 0043anti-clockwise to
allow excess pressure to escape.
XTurn cap 0043further anti-clockwise and
remove it.
XDo not exceed the maximum filling level
when adding coolant.
XScrew on cap 0043tightly. For further information on coolant, see
(
Ypage 210).
Windshield washer system
GWARNING
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
components in the front compartment, it
may ignite. There is a risk of fire and
injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
XOpen the service cover (Ypage 151).
XTo open: pull cap0043upwards by the tab.
XIf available, pull the removable nozzle up
as far as the stop.
XAdd the premixed washer fluid.
XTo close: if available, push the removable
nozzle down and push it inside.
XPress cap 0043onto the filler neck until it
engages.
Further information on windshield washer
fluid/antifreeze (
Ypage 211).
Maintenance
Service display
Service message
The service display informs you of the next
service due date. Depending on the operating
conditions of the vehicle, the remaining time
or distance until the next service due date is displayed.
Maintenance153
>> Maintenance and care.
Z

Information on the type of service and ser-
vice intervals (see the separate Maintenance
Booklet).
For further information inquire at any smart
center or look under
http://www.smartUSA.com (only USA).
iThe service display does not show any
information on the engine oil level.
Observe the notes on the engine oil level
(
Ypage 150).
Whenever a service is due, this is shown
approximately 30 days or 1500 km (1000 miles)
beforehand. After starting the engine, a ser-
vice message appears in the instrument clus-
ter display for a few seconds; see the follow-
ing example.
Next
Servicein.. Daystogether with the
0099 or009A symbol. If the service due date
has been exceeded, Service Due .. Days
Ago.
The symbol shows the type of service. 0099
stands for a minor service and 009Afor a
major service.
The service display does not take into
account any periods of time during which the
battery is disconnected.
Maintaining the time-dependent service
schedule:
XNote down the service due date in the ser-
vice display before disconnecting the bat-
tery.
or
XAfter reconnecting the battery, subtract
the battery disconnection periods from the
service date shown on the display.
Hiding a service message
XPress the 0076button on the multifunction
steering wheel.
Calling up the service display
XSwitch on the ignition.
XPress the 0063or0064 button on the steer-
ing wheel to select the MessagesandSer‐vicemenu.
The service display shows when the service
is due.
Information about Service
Resetting the service display
!Have service work carried out as descri-
bed in the Maintenance Booklet. This may
otherwise lead to increased wear and dam-
age to the major assemblies or the vehicle.
A qualified specialist workshop, e.g. a smart center, will reset the service interval dis-
play after the service work has been carried
out. You can also obtain further information
on maintenance work, for example.
Special service requirements
The prescribed service interval is based on
normal operation of the vehicle. Service work
will need to be performed more often if the
vehicle is operated under arduous conditions
or increased loads, for example:
Rregular city driving with frequent inter-
mediate stops
Rif the vehicle is primarily used to travel
short distances
Rfor frequent operation in mountainous ter-
rain or on poor road surfaces
Rif the engine is often left idling for long
periods
In these or similar operating conditions,
have, for example, the air filter, engine oil
and oil filter changed more frequently. The
tires must be checked more frequently if the
vehicle is operated under increased loads.
You can obtain further information at a
qualified specialist workshop, e.g. a smart
center.
Driving abroad
An extensive smart service network is also
available in other countries. For further
information inquire at any smart center.
Care
General notes
HEnvironmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible
manner.
154Care
>> Maintenance and care.

Always make sure that neither you nor the bat-
tery is electrostatically charged. There is a
build-up of electrostatic charge, e.g.:
Rby wearing clothing made from synthetic
fibers
Rdue to friction between clothing and seats
Rif you push or pull the battery across the
carpet or other synthetic materials
Rif you wipe the battery with a cloth.
GWARNING
During the charging process, a battery pro-
duces hydrogen gas. If a short circuit
occurs or sparks are created, the hydrogen
gas can ignite. There is a risk of an explo- sion.
RMake sure that the positive terminal of a
connected battery does not come into
contact with vehicle parts.
RNever place metal objects or tools on a
battery.
RIt is important that you observe the
described order of the battery terminals
when connecting and disconnecting a
battery.
RWhen jump-starting, make sure that the
battery poles with identical polarity are
connected.
RIt is particularly important to observe
the described order when connecting and
disconnecting the jumper cables.
RNever connect or disconnect the battery
terminals while the engine is running.
GWARNING
Battery acid is caustic. There is a risk of
injury.
Avoid contact with skin, eyes or clothing.
Do not inhale any battery gases. Do not lean
over the battery. Keep children away from
batteries. Wash away battery acid immedi-
ately with plenty of clean water and seek
medical attention.
HEnvironmental note
Batteries contain danger-
ous substances. It is
against the law to dispose
of them with the household
rubbish. They must be col-
lected separately and recy-
cled to protect the envi-
ronment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified
specialist workshop or a
special collection point
for used batteries.
!Have the battery checked regularly at a
qualified specialist workshop.
Observe the service intervals in the Main-
tenance Booklet or contact a qualified spe-
cialist workshop for more information.
!You should have all work involving the
battery carried out at a qualified special-
ist workshop. In the exceptional case that
it is necessary for you to disconnect the
battery yourself, make sure that:
Ryou switch off the engine and remove the
SmartKey. Check that all the indicator
lamps in the instrument cluster are off.
Otherwise, electronic components, such
as the alternator, may be damaged.
Ryou first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic sys-
tem may be damaged.
The battery and the cover of the positive
terminal clamp must be installed securely
during operation.
Comply with safety precautions and take pro-
tective measures when handling batteries.
WARNING
Fire, open flames and smoking are
prohibited when handling the bat-
tery. Avoid creating sparks.
Battery (vehicle)165
>> Breakdown assistance.
Z

Jump-starting
GWARNING
Battery acid is caustic. There is a risk of injury.
Avoid contact with skin, eyes or clothing. Do not inhale any battery gases. Do not lean over
the battery. Keep children away from batteries. Wash away battery acid immediately with
plenty of clean water and seek medical attention.
GWARNING
During charging and jump-starting, explosive gases can escape from the battery. There is a
risk of an explosion.
Particularly avoid fire, open flames, creating sparks and smoking. Ensure there is suffi-
cient ventilation while charging and jump-starting. Do not lean over a battery.
GWARNING
During the charging process, a battery produces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can ignite. There is a risk of an explosion.
RMake sure that the positive terminal of a connected battery does not come into contact with
vehicle parts.
RNever place metal objects or tools on a battery.
RIt is important that you observe the described order of the battery terminals when con-
necting and disconnecting a battery.
RWhen jump-starting, make sure that the battery poles with identical polarity are con-
nected.
RIt is particularly important to observe the described order when connecting and dis-
connecting the jumper cables.
RNever connect or disconnect the battery terminals while the engine is running.
GWARNING
A discharged battery can freeze at temperatures below freezing point. When jump-starting
the vehicle or charging the battery, gases can escape from the battery. There is a risk of an
explosion.
Allow the frozen battery to thaw out before charging it or jump-starting.
!Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
If, at low temperatures, the indicator lamps/warning lamps in the instrument cluster do not
light up, it is highly likely that the discharged battery has frozen. In this case you may neither
jump-start the vehicle nor charge the battery. The service life of a thawed-out battery may be
shorter. The starting characteristics can be impaired, particularly at low temperatures. Have
the thawed-out battery checked at a qualified specialist workshop.
168Jump-starting
>> Breakdown assistance.

XStart the engine.
XBefore disconnecting the jumper cables, let the engine run for several minutes.
XFirst disconnect the jump lead from negative terminal0085and negative terminal 0087and then
from positive terminal 0043and positive terminal 0044. Begin each time at the contacts on your
own vehicle first.
XAttach the protective cover to positive terminal 0043.
XHave the battery checked at a qualified specialist workshop.
iJump-starting is not considered to be a normal operating condition.
iJumper cables and further information regarding jump starting can be obtained at any
qualified specialist workshop.
Towing and tow-starting
Important safety notes
GWARNING
Functions relevant to safety are restricted or no longer available if:
Rthe engine is not running
Rthe brake system or the power steering is
malfunctioning
Rthere is a malfunction in the power sup-
ply or the vehicle's electrical system
When your vehicle is towed away or towed
started, you may require considerably more
effort to steer and brake. There is a risk of
an accident.
In such cases, use a tow bar. Before being
towed away or tow started, make sure the
steering moves freely.
GWARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged.
There is a risk of an accident.
Always switch off the ignition when towing the vehicle with a tow cable or a tow bar.
GWARNING
When towing or tow-starting another vehi-
cle and its weight is greater than the per-
missible gross weight of your vehicle, the:
Rthe towing eye could detach itself
Rthe vehicle/trailer combination could
rollover.
There is a risk of an accident.
When towing or tow-starting another vehi-
cle, its weight should not be greater than
the permissible gross weight of your vehi-
cle.
Information on your vehicle's gross vehicle
weight rating can be found on the vehicle
identification plate (
Ypage 205).
!Do not use the towing eyes for recovery
purposes as this could damage the vehicle.
If in doubt, recover the vehicle with a
crane.
!Drive slowly and smoothly when towing.
Excessive tractive power could otherwise
damage the vehicles.
!Do not tow with sling-type equipment.
This could damage the vehicle.
!The vehicle can be towed a maximum of
30 miles (50km). The towing speed of 30 mph (50 km/h) must not be exceeded.
If the vehicle has to be towed more than
30 miles (50km), the entire vehicle must be
raised and transported.
!Vehicles with automatic transmission
must not be started by tow-starting. This
could otherwise damage the transmission.
170Towing and tow-starting
>> Breakdown assistance.