Smart fortwo coupe and smart fortwo cabriolet (2019). Manual - part 12

Position A represents the charged battery
of another vehicle or an equivalent starter
pack.

! 

Never invert the terminal connections!

X

Connect positive terminal : of charged
battery A with positive terminal ; of
discharged battery B with a jumper
cable. Clamp the jumper cable to
positive terminal : of charged battery
A first.

X

Start the engine of the vehicle with
charged battery A and run at idle speed.

X

Connect negative terminal = of charged
battery A with negative terminal ? of
discharged battery B with a jumper
cable. Clamp the jumper cable to
negative terminal = of charged battery
A first.

X

Start the engine of the vehicle with
discharged battery B and run at idle
speed. You can now switch on the
electrical consumers. Do not switch on
the headlamps under any circumstances.

X

Remove the jumper cables from negative
terminals = and ? first.

X

Remove the jumper cables from positive
terminals : and ;.
You can now switch on the headlamps.

X

Remount the positive terminal cover.

X

Have the battery checked at the nearest
authorized smart center.

Towing

About towing

This section offers information on towing
methods for breakdown situations,
emergency towing, and flat towing smart
vehicles.

Recommended towing method -
Breakdown situation

smart recommends that the vehicle be
transported with all wheels off the ground
using a flatbed carrier truck or
appropriate wheel lift/dolly equipment.

Towing

189

>> Practical hints

.

Z

X

Switch off the tow‑away protection* and
interior motion sensor* (

Y

 page 50).

! 

To prevent damage during transport, do

not tie down the vehicle by its chassis or
suspension parts — use only wheel straps
to position and hold down the vehicle.
Improper tie down on a flatbed carrier
truck or trailer can damage suspension
parts and body panels.

Emergency towing

When circumstances do not permit the
recommended towing method, the vehicle
may be towed with all wheels on the ground
using a strap or tow bar connected to
another vehicle. Only tow the vehicle as far
as necessary to have the vehicle moved to a
safe location where the recommended
towing method can be employed.

G

Warning!

If circumstances require towing the
vehicle with all wheels on the ground,
always tow with a tow bar if:

R

the engine will not run

R

there is a malfunction in the brake
system

R

there is a malfunction in the power
supply or in the vehicle’s electrical
system

A tow bar is necessary to adequately control
the towed vehicle.
Prior to towing the vehicle with all wheels
on the ground, make sure the gear selector
lever is in neutral position N and the
ignition is switched off.

G

Warning!

With the engine not running, there is no
power assistance for the brake and
steering* systems. In this case, it is
important to keep in mind that a
considerably higher degree of effort is

necessary to brake and steer the vehicle.
Adapt your driving accordingly.

! 

Do not tow the vehicle with the front

axle raised. Doing so may cause serious
damage to the brake system which is not
covered by the smart Limited Warranty.

! 

Before towing the vehicle observe the

following instructions:

R

Do not tow with sling-type equipment
attached to suspension parts. This may
cause damage to the radiator and other
supports if towing on a bumpy road.

R

Towing the vehicle should only be done
using the properly installed towing
eye bolt. Never attach a tow cable, tow
rope, or tow rod to the vehicle chassis,
frame, or suspension parts.

! 

Make sure the ignition is switched off

while towing the vehicle. Doing
otherwise may result in

R

the ESP

®

 being activated. Active

braking action through the ESP

®

 may

seriously damage the brake system
which is not covered by the smart
Limited Warranty.

R

a discharged battery.

! 

Make sure the gear selector lever is in

neutral position N while towing the
vehicle. Doing otherwise may result in
significant transmission damage.

! 

Towing the vehicle with a luggage

rack* mounted is not permissible. The
vehicle must not be towed by the luggage
rack*.

i

If the battery is disconnected or

discharged, the gear selector lever will
remain locked in park position P.
Contact an authorized smart center for
assistance or call Roadside Assistance.

190

Towing

>> Practical hints

.

* optional

Towing eye bolt

The towing eye bolt is located in the
passenger footwell under the carpet.

X

Unscrew the carpet holder in the
passenger footwell (

Y

 page 152).

X

Lift the carpet.

X

Take out towing eye bolt :.

Covers
Depending of whether you are towing a
vehicle or being towed, the towing eye bolt
can be screwed into threaded holes which
are located behind covers on the front and
rear bumper.

Front cover

X

Remove cover : using a suitable object
to reveal the threaded hole for the towing
eye bolt.

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.

Rear cover

X

Remove cover ; using a suitable object
to reveal the threaded hole for the towing
eye bolt.

Installing towing eye bolt

X

Screw towing eye bolt in clockwise to its
stop and tighten with a suitable object.

G

Warning!

For safety reasons, recovery or lashing
down of the vehicle by means of the towing
eye is not allowed. Failure to observe this
could result in the towing eye being ripped
out of its mounting and people being
injured.

Towing the vehicle

X

Engage the parking brake.

X

Connect the strap or tow bar to the towing
eye.

X

Switch on the ignition.

X

Depress the brake pedal and keep it
pressed.

X

Move the gear selector lever to neutral
position N.

X

Release the brake pedal.

Towing

191

>> Practical hints

.

Z

i

With the gear selector lever in neutral

position N, the key cannot be turned fully
to starter switch position 0. Therefore
turn the key in the starter switch as far
left as it will go when switching off the
ignition.

X

Switch off the ignition.

X

Leave the key in the starter switch.

X

Switch on the hazard warning flasher.

X

Release the parking brake.

Flat towing

Flat towing is when all wheels of the
vehicle are on the ground during the tow.
For vehicles that will be flat towed over
long distances observe the following
recommendations:

X

Preparing the vehicle: Contact an
authorized smart center for information
on recommended tow bar equipment and
installing a matching on/off switch on
the battery terminal.

X

Before towing: Make sure the ignition is
switched on.

X

Engage the parking brake.

X

Depress the brake pedal and keep it
pressed.

X

Move the gear selector lever to neutral
position N.

X

Release the brake pedal.

i

With the gear selector lever in neutral

position N, the key cannot be turned fully
to starter switch position 0. Therefore
turn the key in the starter switch as far
left as it will go when switching off the
ignition.

X

Switch off the ignition.

X

Leave the key in the starter switch.

X

Wait approximately 30 seconds until the
multifunction display in the instrument
cluster is completely blank.

X

Turn the battery off using the previously
installed battery switch.

X

Release the parking brake.

X

During towing: Make sure the gear
selector lever remains in neutral
position N with the ignition switched
off.

X

After towing: Engage the parking brake.

X

Turn the battery on using the previously
installed battery switch.

X

Move the gear selector lever to park
position P.

X

Remove the key from the starter switch.

X

Lock the doors.

! 

Do not flat tow the vehicle with the front

axle raised. Doing so may cause serious
damage to the brake system which is not
covered by the smart Limited Warranty.

! 

Failure to follow the recommendations

for flat towing can cause damage to your
vehicle:

R

Not following the battery disconnect
procedure in the proper sequence may
result in data loss in the vehicle’s
control units.

R

Not disconnecting the battery and
leaving the key in starter switch
position 1 (ignition on) may result in

-

the vehicle locking. The vehicle will
lock if the wheels are turning at
vehicle speeds of approximately
8 mph (14 km/h) or more.

-

the ESP

®

 being activated. Active

braking action through the ESP

®

 may

seriously damage the brake system
which is not covered by the smart
Limited Warranty.

192

Towing

>> Practical hints

.

R

Not moving the gear selector lever to
neutral position N may result in
significant transmission damage.

R

in a discharged battery.

Fuses

The electrical fuses in your vehicle serve
to switch off malfunctioning power
circuits.
If a fuse is blown, the components and
systems secured by that fuse will stop
operating.

G

Warning!

Only use fuses approved by smart with the
specified amperage for the system in
question and do not attempt to repair or
bridge a blown fuse this may cause an
overload leading to a fire, and/or cause
damage to electrical components and/or
systems. Contact a smart center if you
encounter any electrical problems.

! 

A blown fuse must be replaced by an

appropriate spare fuse (recognizable by
its color or the fuse rating given on the
fuse) of the amperage recommended in
the fuse chart. Any smart center will be
glad to advise you on this subject.

If a newly inserted fuse blows again, have
the cause determined and rectified at an
authorized smart center.

Before replacing fuses:

R

Engage the parking brake.

R

Make sure the gear selector lever is in
park position P.

R

Turn off all electrical accessories.

R

Turn off the engine.

R

Remove the key from the starter switch.

Replacing a fuse

The fuse box is located on the driver’s side
below the dashboard.

X

From the fuse chart (

Y

 page 196),

determine which fuse belongs to the
malfunctioning accessory or component.

X

Remove the respective fuse.

X

Replace the defective fuse with a new one
of the same amperage.

Fuses

193

>> Practical hints

.

Z

Fuse box

Front side
: - \

Fuse

y - ¥

Backup fuse slots

194

Fuses

>> Practical hints

.

Rear side
^ - ;

Fuse

Fuses

195

>> Practical hints

.

Z

Fuse chart

No.

Accessory/Component

Amperage

Color

:

Engine

25 A

Neutral

;

Windshield wipers

25 A

Neutral

=

Power window, left and right

20 A

Yellow

?

Blower

25 A

Neutral

A

Front fog lamps

10 A

Red

B

Right parking lamp, license plate lamps

7.5 A

Brown

C

Left parking lamp

7.5 A

Brown

D

Engine

25 A

Neutral

E

Engine

7.5 A

Brown

F

Engine

15 A

Blue

G

ESP

®

25 A

Neutral

H

Switches strip, on-board diagnostics socket, turn
signal lamps, transmission control unit, exterior
lamp switch

10 A

Red

I

Spare fuse (without function)

15 A

Blue

J

Charge air cooler, air conditioning compressor

15 A

Blue

K

Audio, subwoofer, interior lighting, soft top
(cabriolet only)

15 A

Blue

L

Fuel pump

15 A

Blue

M

Rear window wiper (coupé only)

15 A

Blue

N

ESP

®

, power steering, air bag, instrument cluster

10 A

Red

O

Engine control unit, on-board diagnostics socket,
transmission control unit

7.5 A

Brown

P

Air conditioning system, exterior rear view mirror
adjustment, washer pump, audio, seat heating, gear
selector lever control unit, wiper switch

10 A

Red

Q

Auxiliary power outlet, cigarette lighter

15 A

Blue

R

Left low‑beam headlamp

7.5 A

Brown

S

Right low‑beam headlamp

7.5 A

Brown

T

Brake lamps, rain-light sensor

15 A

Blue

196

Fuses

>> Practical hints

.

No.

Accessory/Component

Amperage

Color

U

Right high‑beam headlamp

7.5 A

Brown

V

Left high‑beam headlamp

7.5 A

Brown

W

Engine

7.5 A

Brown

X

Rear window defroster, radiator fan

40 A

Orange

Y

Soft top (cabriolet only)

30 A

Green

Z

Transmission

40 A

Orange

\

Horn, doors, central locking

20 A

Yellow

^

—

—

—

_

Ignition

50 A

Red

a

ESP

®

40 A

Orange

;

Power steering

30 A

Green

y

Exterior rear view mirror heating

7.5 A

Brown

z

—

—

—

|

Backup (ignition)

—

—

~

Backup (ignition)

—

—

¡

Backup (batt. +)

—

—

¢

Backup (batt. +)

—

—

£

Backup (batt. +)

—

—

¤

Backup (batt. +)

—

—

¥

Seat heating

20 A

Yellow

Fuses

197

>> Practical hints

.

Z

198

>> Technical data.

Parts service .................................. 200

Warranty coverage ........................... 200

Engine electronics .......................... 200

Identification labels ....................... 202

Vehicle specification (model pure) ..... 203

Vehicle specification (model passion) . 204

Vehicle specification (model BRABUS) . 205

Rims and tires ................................ 206

Service fluids and capacities ............ 209

Parts service

The “Technical data” section provides the
necessary technical data for your vehicle.
Genuine smart Parts are subjected to
stringent quality inspections. Each part
has been specifically developed,
manufactured or selected for and adapted
to smart vehicles.
Therefore, Genuine smart Parts should be
installed.

! 

The use of non-genuine smart parts and

accessories not authorized by smart
could damage the vehicle, which is not
covered by the smart Limited Warranty,
or could compromise the vehicle’s
durability or safety.

Warranty coverage

Your vehicle is covered under the terms of
the warranties printed in the Service and
Warranty Information booklet. Your
authorized smart center will exchange or
repair any defective parts originally
installed on the vehicle in accordance with
the terms of the following warranties:

R

smart USA Limited Warranty (USA only)

R

New Vehicle Limited Warranty (Canada
only)

R

Emission System Warranty

R

Emission Performance Warranty

R

Corrosion Warranty

R

California, Connecticut, Maine,
Massachusetts, New York, Pennsylvania,
Rhode Island, and Vermont Emission
Control System Warranty

R

smartmove Assistance (Canada only)

R

State Warranty Enforcement Laws (Lemon
Laws, USA only)

Replacement parts and accessories are
covered by the smart Parts and Accessories
warranties, copies of which are available
at any authorized smart center.

Loss of Service and Warranty
Information Booklet 

Should you lose your Service and Warranty
Information booklet, have an authorized
smart center arrange for a replacement. It
will be mailed to you.

Engine electronics

Work on engine electronics

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.

! 

Always have maintenance work on the

engine electronics and components, such
as control modules, sensors and
connecting cables, 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
vehicle components may wear more
rapidly, which may void the vehicle’s
warranty.

Retrofitting electrical and electronic
devices

Electrical and electronic devices can
endanger vehicle operating safety.

200

Engine electronics

>> Technical data.

! 

Damage or consequential damage due to

retrofitting a device in the vehicle is
not covered by smart’s warranty.

If you install telephones or radio
transmitters in the vehicle you must have
such retrofits approved. smart approves
the installation of telephones and radio
devices if the work is done professionally
and the device is connected to a low-
reflection exterior antenna.
The transmitting power of the telephone or
radio must not exceed the following
maximum values.

Frequency range
(band)

Maximum
transmitting 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

R

there is no external antenna

R

the external antenna is not low-
reflection

R

the external antenna is incorrectly
installed

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
electromagnetic fields.
Because of this, have the external antenna
installed exclusively at a qualified
specialist workshop which has the

necessary specialist knowledge and tools
to carry out the work required, 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.

On-board Diagnostics Socket (OBD)

The on-board diagnostics socket is located
inside the vehicle on the right side of the
left footwell.

:

On-board diagnostics socket

Engine electronics

201

>> Technical data.

Z

Identification labels

Signs and labels

:

Air bag information signs
(sun visor)

;

VIN (engine compartment)

=

Emission control information label,
includes both federal and California
certification exhaust emission
standards (engine compartment)

?

Heat warning label (engine
compartment)

A

Certification label (driver’s door
B‑pillar)

B

Tire and loading information placard
(driver’s door B‑pillar)

C

VIN (lower edge of windshield)

Certification label

X

Open the driver’s door.

:

Certification label (on driver’s door
B‑pillar)

i

Data shown on the example

certification label are for illustration
purpose only. These data are specific to
each vehicle and may vary from data
shown in the illustration. Refer to
certification label on vehicle for actual
data specific to your vehicle.

Example certification label (U.S. vehicles)
;

Vehicle Identification Number (VIN)

=

Paintwork code

202

Identification labels

>> Technical data.

Example certification label (Canada vehicles)
;

Vehicle Identification Number (VIN)

=

Paintwork code

Vehicle Identification Number (VIN)

The Vehicle Identification Number (VIN)
can be found in the following locations:

R

on the certification label on the driver’s
door B‑pillar (

Y

 page 202)

R

on the rear right on the cargo
compartment floor (

Y

 page 203)

R

in the lower edge of the windshield
(

Y

 page 202)

X

Open the cargo compartment.

X

Fold back the carpet.

:

VIN (on the cargo compartment floor)

Engine number

The engine number is engraved into the
engine block. For more information,
contact any authorized smart center.

i

When ordering parts, please specify

vehicle identification and engine
number.

Vehicle specification (model pure)

The quoted data apply only to the standard
vehicle. Contact an authorized smart
center for the corresponding data of all
special bodies and special equipment.

Engine (model pure)

Engine, type

132

Mode of operation

4‑stroke engine,

gasoline injection

No. of cylinders

3

Valves per
cylinder

4

Bore

2.83 in (72.00 mm)

Stroke

3.22 in (81.80 mm)

Total piston
displacement

61.0 cu in (999 cm

3

)

Compression ratio

10.0:1

Output acc. to
SAE J 1349

70 hp/5

 

800 rpm

(52 kW/5

 

800 rpm)

Maximum torque
acc. to SAE J 1349

68 lb-ft/4

 

500 rpm

(92 Nm/4

 

500 rpm)

Maximum engine
speed

6

 

400 rpm

Firing order

1-2-3

Poly‑V‑belt

802 mm

Vehicle specification (model pure)

203

>> Technical data.

Z

Electrical system (model pure)

Alternator

14 V/90 A

Starter motor

12 V/0.95 kW

Battery

12 V/42 Ah

Spark plugs, type

DENSO XU22 HDR9

Spark plugs,
electrode gap

0.035 in (0.9 mm)

Spark plugs,
tightening torque

11 - 15 lb-ft

(15 - 20 Nm)

Main dimensions (model pure)

Overall vehicle
length

106.1 in (2

 

695 mm)

Overall vehicle
width

18

69.0 in (1

 

752 mm)

Overall vehicle
height

60.7 in (1

 

542 mm)

Wheelbase

73.5 in (1

 

867 mm)

Track, front

50.5 in (1

 

283 mm)

Track, rear

54.5 in (1

 

385 mm)

Turning circle

28.7 ft (8.75 m)

Weights (model pure)

Cargo
compartment load

max. 110 lb (50 kg)

Roof load

19

None

G

Warning!

No racks or loads may be secured to the roof
of the vehicle, as

R

the panorama roof* may be damaged, thus
injuring persons

R

this can have a substantial adverse
effect on the driving dynamics of the
vehicle, thus causing accidents

R

the rack and/or the load could detach and
through this cause an accident or other
people could be injured by the load and/
or rack that has fallen off

Vehicle specification (model passion)

The quoted data apply only to the standard
vehicle. Contact an authorized smart
center for the corresponding data of all
special bodies and special equipment.

Engine (model passion)

Engine, type

132

Mode of operation

4‑stroke engine,

gasoline injection

No. of cylinders

3

Valves per
cylinder

4

Bore

2.83 in (72.00 mm)

Stroke

3.22 in (81.80 mm)

Total piston
displacement

61.0 cu in (999 cm

3

)

Compression ratio

10.0:1

Output acc. to
SAE J 1349

70 hp/5

 

800 rpm

(52 kW/5

 

800 rpm)

18

Exterior rear view mirrors folded out.

19

This vehicle is not intended to carry items on its roof. Thus roof rails and any roof-mounted devices
must not be used.

204

Vehicle specification (model passion)

>> Technical data.

* optional