Page 176 of 314
Engine compartment
>> Operation
175
Be careful not to spill any oil when adding to
avoid environmental damage caused by oil
entering the ground and water.!
Excess engine oil must be siphoned or
drained off. It could cause damage to the
engine or emission control system not
covered by the smart Limited Warranty.
>Screw filler cap
1
back on filler neck.
>Close the engine compartment cover.
Page 221 of 314

Driving instructions
220
>> Operation
Passenger compartment Control and operation of radio
transmitters
Radio and telephoneTelephones and twoway radios
Radio transmitters, such as a mobile phone or
a c i ti z e n s b a n d u n i t s h o u l d o n l y b e u se d i n s i d e
the vehicle if they are connected to an
antenna that is installed on the outside of the
vehicle.
Refer to the radio transmitter operation
instructions regarding use of an external
antenna.
G
Warning!
Always fasten items being carried as
securely as possible.
In an accident, during hard braking or
sudden maneuvers, loose items thrown
around inside the vehicle may injure
vehicle occupants.
The cargo compartment is the preferred
place to carry objects.
G
Warning!
Please do not forget that your primary
responsibility is to drive the vehicle
safely. Only operate the radio or
telephone
1 if road, weather and traffic
conditions permit.
Bear in mind that at a speed of just
30 mph (approximately 50 km/h), your
vehicle is covering a distance of 44 feet
(approximately 14 m) every second.
1 Observe all legal requirements.
G
Warning!
Never operate radio transmitters
equipped with a builtin or attached
antenna (i.e. without being connected to
an external antenna) from inside the
vehicle while the engine is running. Doing
so could lead to a malfunction of the
vehicle’s electronic system, possibly
resulting in an accident and/or serious
personal injury.
Page 291 of 314

Engine electronics
290
>> Technical data.
Work on engine electronics
!
Always have maintenance work on the en
gine electronics and components, such as
control modules, sensors and connecting ca
bles, performed by a qualified specialist who
has the necessary knowledge and tools to
carry out the work required, e.g. at a smart
center. Otherwise there is a danger that vehi
cle components may wear more rapidly, which
may void the vehicle’s warranty.
Retrofitting electrical and elec
tronic devicesElectrical and electronic devices can endan
ger vehicle operating safety.!
Damage or consequential damage due to
retrofitting a device in the vehicle is not co
vered by smart's warranty.
If you install telephones or radio transmitters
in the vehicle you must have such retrofits ap
proved. smart approves the installation of
telephones and radio devices if the work is
done professionally and the device is con
nected to a lowreflection exterior antenna.
G
Warning!
Always have maintenance work on engine
electronics and components performed
by a qualified specialist, e.g. at a smart
center. In particular, work relevant to
safety or on safety related systems must
be carried out at a qualified specialist
workshop.
Page 292 of 314

Engine electronics
>> Technical data.
291
The transmitting power of the telephone or
radio must not exceed the following maximum
values.Frequency range
(band)
Maximum transmit
ting power (Watts)
Short wave (<50 MHz)
100
2 m wavelength
50
0.7 m wavelength
35
0.25 m wavelength
10
G
Warning!
Radio transmitters can interfere with the
vehicle's electronic system, endanger
the operating safety of the vehicle and
thus your own safety, if
• there is no external antenna
• the external antenna is not lowreflec
tion
• the external antenna is incorrectly in
stalled
Excessive electromagnetic radiation can
damage your health and that of others.
Using an external antenna addresses and
considers the concerns currently being
discussed in scientific circles about the
health hazards possibly posed by elec
tromagnetic fields.
Because of this, have the external anten
na installed exclusively at a qualified
specialist workshop which has the neces
sary specialist knowledge and tools to
carry out the work required, e.g. at a
smart center. In particular, work rele
vant to safety or on safetyrelated sys
tems must be carried out at a qualified
specialist workshop.