2008 SMART FORTWO COUPE check engine

Jump starting
276
>> Practical hints.
!
Do not tow start vehicle.
!
Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine using a
battery quick charge unit.
If the engine does not run after several
unsuccessful starting attempts, have it
checked at the nearest authorized smart cen

ter.
Excessive unburned fuel generated by
repeated failed starting attempts may damage
the catalytic converter and may present a fire
risk.
Make sure the jumper cables do not have loose
or missing insulation.
Make sure the cable clamps do not touch any
other metal part while the other end is still
attached to a battery.If the battery is discharged, the engine can be
started with jumper cables and the battery of
another vehicle. Observe the following:
• Jump starting should only be performed
when the engine and catalytic converter are
cold.
• Do not start the engine if the battery is
frozen. Let the battery thaw out first.
• Only jump start from batteries with the
same voltage rating (12 V). Jump starting
with a higher voltage battery could damage
the vehicle’s electrical system, which will
not be covered by the smart Limited
Warranty.
• Only use jumper cables with sufficient
cross
section and insulated terminal
clamps.
• 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.
G
Warning!
Failure to follow these directions will
cause damage to the electronic compo

nents, and can lead to a battery explosion
and severe injury or death.
Never lean over batteries while connect

ing or jump starting, you might get in

jured.
Battery fluid contains sulfuric acid. Do
not allow this fluid to come in contact with
eyes, skin or clothing. In case it does, im

mediately flush affected area with water,
and seek medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and very explosive.
K e e p f l a m e s o r s p a r k s a w a y f r o m b a t t e r y ,
avoid improper connection of jumper
cables, smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing per

sonal injury.
Read all instructions before proceeding.

Jump starting>> Practical hints.
277 Jump start assistance
Your vehicle’s battery is located in the
passenger’s footwell below the footrest
(
page 273).
For jump starting, use the terminals of the
battery, keeping the leads connected.
>Make sure the two vehicles do not touch.
>Set the parking brake.
>Move the gear selector lever to park
positionP.
>Turn off all electrical accessories.
>Turn off the engine.>Get access to the battery in the passen

ger’s footwell (

page 273).
>Remove the positive terminal cover.
1
Positive terminal of discharged battery
2
Negative terminal of charged battery
3
Positive terminal of charged battery
4
Negative terminal of discharged battery
!
Never invert the terminal connections!>Connect positive terminals
1
and
3 with
the jumper cable.
Clamp the cable to positive terminal3 of
the charged battery first.
>Start the engine of the vehicle with the
charged battery and run at idle speed.
>Connect negative terminals
2 and
4 with
the jumper cable.
Clamp the cable to negative terminal2 of
the charged battery first.
>Start the engine of the disabled vehicle.
You can now turn on the electrical accesso

ries. Do not switch on the headlamps under
any circumstances.
>Remove the jumper cables first from
negative terminals
2 and
4 and then from
positive terminals
1 and
3.
You can now switch on the headlamps.
>Have the battery checked at the nearest
authorized smart center.
G
Warning!
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and
precautions when handling automotive
batteries (

page 271).P54.10
2749
31

Service fluids and capacities
>> Technical data.
309 Coolants
The engine coolant is a mixture of water and
anticorrosion/antifreeze, which provides:
• Corrosion protection
• Freeze protection
• Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection to
approximately
35°F (
37°C) and corrosion
protection.!
Add premixed coolant solution only.
Adding water and MB 325.0 Anticorrosion/An

tifreeze separately from each other, could
cause engine damage not covered by the
smart Limited Warranty.
If the antifreeze mixture is effective to
35°F
(
37°C), the boiling point of the coolant in the
pressurized cooling system is reached at
approximately 266°F (130°C).The coolant solution must be used year round,
even in countries which have high tempera

tures to provide the necessary corrosion
protection and increase boiling protection.
Refer to Maintenance/ Service Booklet for re

placement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the Mainte

nance booklet is only applicable if MB 325.0
Anticorrosion/Antifreeze solution or other
smart approved products of equal specifica

tion are used to renew the coolant concentra

tion or bring it back up to the proper level.
For information on other smart approved
products of equal specification, contact an
authorized smart center.
To provide important corrosion protection,
the solution must be at least 50% anticorro

sion/antifreeze (equivalent to freeze protec

tion to approximately
35°F [
37°C]).If you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protection
to approximately
49°F [
45°C]), the engine
temperature will increase due to the lower
heat transfer capability of the solution.
Therefore, do not use more than this amount
of anticorrosion/antifreeze.
If the coolant level is low, water and MB 325.0
Anticorrosion/Antifreeze should be used to
bring it up to the proper level (have cooling
system checked for signs of leakage). Please
make sure the mixture is in accordance with
label instructions.
Always use anticorrosion/antifreeze that have
been approved by smart. For information
contact an authorized smart center.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you are
not sure about the water quality, consult an
authorized smart center.

Service fluids and capacities
310
>> Technical data. Anticorrosion/antifreeze
Your vehicle contains a number of aluminum
parts. The use of aluminum components in
motor vehicle engines necessitates that
anticorrosion/antifreeze coolant used in such
engines be specifically formulated to protect
the aluminum parts.Failure to use such anticorrosion/antifreeze
coolant will result in a significantly shortened
service life.
Therefore, the following product is strongly
recommended for use in your vehicle: MB
325.0 Anticorrosion/Antifreeze agent.Before the start of the winter season (or once
a year in hot southern regions), you should
have the anticorrosion/antifreeze concentra

tion checked. The coolant is also regularly
checked each time you bring your vehicle to
an authorized smart center for service.
Anticorrosion/antifreeze quantity:
Approximate freeze protection
35°F (
37°C)

49°F (
45°C)
All models
2.27 US qt (2.15 l)
2.45 US qt (2.32 l)