Smart roadster and smart roadster coupe. Manual - part 12

Routines  9
3

Refuelling

Refuelling properly

 

쮿

Switch both the engine and ignition 
off.

쮿

Open the fuel filler flap.
> The fuel filler flap is located on the 

right
hand side of the car and is 
locked and unlocked via the central 
locking system.

쮿

Turn the filler cap anticlockwise.

쮿

You should fill up with fuel until the 
nozzle cuts out.

쮿

Turn the filler cap clockwise until it 
is tight and the handle grip overturns.

쮿

Close the fuel filler flap.

>Note!
If you wish to fill the fuel tank to its 
maximum level,

 wait for a period of 30 seconds after 

the first switch off,

 then start filling the tank with the fuel 

pump nozzle again until it switches 
off. 

Tank fluid capacity

 Fuel tank capacity approx. 35 ltrs.,

 including a reserve of approx. 5 ltrs.

Danger of injury!
Petrol is highly inflammable. 

Fire, naked flames and smoking are 
therefore prohibited when handling 
petrol.
Avoid allowing petrol to come into 
contact with your skin or clothes. You 
will damage your health if

 your skin comes directly into contact 

with petrol.

 you inhale petrol vapours.

Danger of poisoning!
Keep children away from fuel. If 

any fuel is swallowed, consult a doctor 
immediately.

Environment!
Never allow fuel to spill over.

Never overfill the fuel tank.
Fuel that has spilled over onto the 
ground pollutes the environment.

9
4   Routines

Engine oil level

Engine oil level

 

>Note!
Check the engine oil level at regular 
intervals when the engine is warm.

쮿

Park the car on a level surface.

쮿

Switch both the engine and ignition 
off.

쮿

Apply the handbrake.

>Important!

 Observe the scheduled service 

intervals. Failure to do so may destroy 
your engine.

 Observe the information in the service 

interval display.

 An oil level above the MAX mark may 

result in engine or catalytic converter 
damage. Oil quantities above the MAX 
mark have to be siphoned off.

 An oil level below the MIN mark may 

result in your engine being damaged.

Danger of poisoning!
Keep oil away from children. If 

oil has been swallowed, consult a 
doctor immediately.

Routines  9
5

Engine oil level

Checking engine oil level

쮿

Wait a few minutes until the oil has 
settled.

쮿

Open the rear luggage compartment.

쮿

Fold the carpet back (A).

쮿

Remove the fastening screw (B) for the 
engine compartment cover in the 
anticlockwise direction.

쮿

Remove the engine compartment cover 
(C).

쮿

Pull the dipstick out and wipe it with a 
clean cloth.

쮿

Reinsert the dipstick.

쮿

Wait for at least one minute.

쮿

Pull the dipstick out again.
> The oil level must lie between the 

markings MIN and MAX on both sides 
of the dipstick.

쮿

Reinsert the dipstick.

9
6   Routines

Engine oil level

If your car has too little engine oil

You must top up the engine oil!

쮿

Unscrew the cap.

쮿

Use a funnel to top the engine oil up.

쮿

When the MIN oil level is reached, top 
up with no more than 0.5 litres.

쮿

Wait 1 minute until the oil has run into 
the oil pan.

쮿

Check the engine oil level again.

쮿

Screw the cap on tightly in the 
clockwise direction.

쮿

Slide the engine compartment covers 
forward into the tabs provided, place 
to the side and retighten the fastening 
screw.

쮿

Return the carpet to its position.

쮿

Close the rear luggage compartment.

>Note!
The engine oil level should only be 
checked when the engine is still warm. 

Fire hazard!
When topping up the engine oil, 

take care to ensure that no oil is spilt 
on any hot parts such as the exhaust 
system or catalytic converter.
If this should however happen, the 
engine must be thoroughly cleaned off 
before you continue your journey. The 
oil could otherwise ignite.

Routines  9
7

Engine oil level

Choosing the right type of oil
Use only oils approved by smart gmbh 
(acc. to MB sheet 229.5). The MB sheet 
number is marked on the oil containers. A 
list of the approved engine oils can be 
obtained from any smart center or 
smart service.

>Important!
Do not use special additives. They may 
lead to increased wear or engine damage. 
A qualified specialist workshop such as a 
smart center will be able to provide 
further details.

Engine oil viscosity
The SAE class (viscosity) has to be chosen 
in accordance with the average outside 
air temperature for each current season. 
Exact adherence to the SAE classes 
according to the outside temperatures 
would, however, necessitate frequent oil 
changes. The temperature limits for the 
SAE classes therefore should be viewed as 
guidelines which can be temporarily 
exceeded or undercut.

Environment!
One drop of oil will contaminate 

1,000 litres of water. 
Take care not to spill oil when topping 
up. Spilled oil could seep into the 
groundwater and cause considerable 
damage to the environment.

9
8   Routines

Checking fluids

Checking fluids

Location of the fluid reservoirs

 Coolant:

Beneath the rear luggage compartment 
in the engine compartment.

 Brake  fluid:

In the front luggage compartment, 
beneath the storage tray.

 Windscreen washer fluid:

In the front luggage compartment on 
the left.

Check the fill levels at regular intervals.

Before checking the fluid levels

쮿

Park the car on a level surface.

쮿

Switch both the engine and ignition 
off.

쮿

Apply the handbrake.

Coolant level, checking

It is necessary to check the coolant level 
to ensure that the engine does not 
overheat.

>Important!
The cooling system is maintenance free 
under normal operating conditions. A 
drop in the coolant level indicates 
leakage.

If the coolant level has fallen

쮿

top up the coolant.

쮿

Have the reason for the loss of coolant 
investigated by a qualified specialist 
workshop, e.g. a smart center. 

Danger of injury!
The cooling system is 

pressurised. Allow the engine to cool 
down again before unscrewing the cap. 
Allow it to cool down for at least 
30 minutes. You could otherwise be 
scalded by hot coolant when the cap is 
released.

Routines  9
9

Checking fluids

Determining the coolant level

쮿

Open the rear luggage compartment.

쮿

Fold the carpet back (A).

쮿

Remove the fastening screw (B) for the 
engine compartment cover.

쮿

Remove the engine compartment cover 
(C).

쮿

Check the level in the reservoir by 
looking at it side
on.
> The fluid level must lie between the 

MIN and MAX marks.

>Note!
Warm coolant expands, which is why it 
may extend beyond the maximum filling 
level.

Topping up coolant

쮿

Let the radiator cool down for at least 
30 minutes.

쮿

Cover the cap for the coolant expansion 
reservoir with a cloth before touching 
it.

쮿

Turn the cap one complete revolution 
in order to allow the excess pressure to 
escape.

쮿

Unscrew the cap and remove it.

쮿

You should only top up the coolant as 
far as the maximum filling level.

쮿

Replace the cap and tighten when 
finished.

9
10   Routines

Checking fluids

Topping up the windscreen washer system
The windscreen washer reservoir has an 
approximate capacity of 3 litres. The 
headlight washer system* also is supplied 
by the windscreen washer reservoir.

쮿

Open the front luggage compartment.

쮿

Pull up the reservoir cap at the tab.
> You can now add washer fluid.

>Note!
In order to clean the windscreen 
optimally, use smartcare windscreen 
cleanser concentrate for summer or 
winter.

Compare with notes for use on packaging.

Fire hazard!
Windscreen wash concentrate is 

highly inflammable. When handling the 
concentrate, avoid smoking, fire or 
naked flames.

Dosage for total filling quantity of 3 litres
depending on the outside temperature

Above 0 °C

10 °C

20 °C

smartcare windscreen cleanser concentrate, summer: water

1:100

smartcare windscreen cleanser concentrate, winter: water

1:2

1:1

Routines  9
11

Checking fluids

Checking the brake fluid

A constant fluid level is necessary to 
ensure that the car's brake system 
remains in perfect working order.

Checking the brake fluid level

쮿

Open the front luggage compartment.

쮿

Turn the four retaining screws 
anticlockwise to remove.

쮿

Remove the storage tray.

쮿

Look down into the reservoir for a 
visual check.
> The fluid level must lie between the 

MIN and MAX marks.

>Important!
Have the brake fluid topped up only by a 
qualified specialist workshop, e.g. in a 
smart center.

쮿

If the level is slightly below the MIN 
mark, take your car to a qualified 
specialist workshop, e.g. a smart 
center.

쮿

If the level is significantly below the 
MIN mark, call a breakdown recovery 
service, e.g. smartmove Assistance or a 
qualified specialist workshop, such as a 
smart center.

Accident risk!
If the boiling point of the brake 

fluid is too low, vapour bubbles could 
form in the brake system when the 
brakes are subjected to high loads 
(e.g. when driving down mountain 
passes). This will impair the 
effectiveness of the brakes.
Have the brake fluid changed every two 
years!

9
12   Routines

Tyre inflation pressure

Tyre inflation pressure

Tyres are a particularly important aspect 
of the car's operating safety and 
roadworthiness. For this reason, you must 
check the tyre inflation pressure, tyre 
tread and tyre condition on a regular 
basis.

Accident risk!
If the inflation pressure of a tyre 

falls repeatedly,

 investigate the tyre for foreign 

objects.

 check whether there is a leak at the 

rim or valve.

Accident risk!
Insufficient tyre pressure leads 

to

 excessive tyre heat build
up,

 increased tyre wear and an increased 

risk of causing an accident due to 
tyre pressure loss and changes to 
driving stability,

 increased fuel consumption. 
High tyre pressure leads to

 a longer brake distance,

 poorer traction from all tyres and

 increased, uneven wear. 
Tyres that are inflated too high are 
moreover more susceptible to damage 
and therefore increase the general risk 
of accidents.

Accident risk!
Always inflate your car's tyres to 

the specified pressures. The 
temperature and pressure of the tyres 
rise during operation. For this reason, 
never reduce the tyre pressure of tyres 
while warm. The pressure of the tyres 
would then be too low once they had 
cooled down. If tyre inflation pressure 
is too low, tyres could be damaged, 
particularly if the car is carrying a 
high load and is travelling at high 
speed.
Tyre damage could e.g. result in a tyre 
bursting, causing you to lose control 
over your car; you or others could be 
injured as a result.
You should therefore check the tyre 
inflation pressure regularly, but at 
least every 14 days. 

Routines  9
13

Tyre inflation pressure

Check the tyre inflation pressure before 
the start of your journey. There is a table 
showing the tyre inflation pressure on 
your car's fuel filler flap.

>Note!
Tyre inflation pressures change by about 
0.1 bar per 10 °C change in the air 
temperature. Always keep the tyre 
inflation pressure at the recommended 
level.

9
14   Routines

Tyre inflation pressure

Checking the tyre inflation pressure

쮿

Allow the tyres to cool down.

쮿

Unscrew the valve protective cap (A).

쮿

Check the tyre pressure (B).
> The tyre inflation pressure values 

are printed on the inside of the 
filler cap and in the table below.

쮿

Screw the protective cap back onto the 
valve.

>Important!
The protective cap protects the valve 
against dirt and leakage.

Tyre inflation pressure

All vehicles

Tyre inflation pressure (summer and winter)

Front wheels, unladen/fully laden (bar)

2.0

Rear wheels, unladen/fully laden (bar)

2.0

Routines  9
15

Wiper blades

Wiper blades

To have a clear view of things,

 wiper blades that are in perfect shape 

are absolutely indispensable,

 clean the wiper blades regularly with a 

cleaner and

 remove any tough dirt stains with a 

sponge or brush.

>Note!
Original wiper blades for your car are 
available from a qualified specialist 
workshop, e.g. a smart center.

Changing the wiper blades

쮿

Take the keys out of the ignition switch.

쮿

Fold the wiper blade arm up and turn the 
wiper blade until it is horizontal.

쮿

Press the retaining spring (A).

쮿

Slide the wiper blade toward the wiper 
arm (B).

쮿

Remove the used wiper blade.

쮿

Slide the new wiper blade onto the wiper 
blade arm (C).
> The retaining spring must audibly 

engage in the wiper arm.

Danger of injury!
Before changing the wiper 

blades, remove the key from the 
ignition switch. The windscreen 
wipers could otherwise be set in motion 
and injure you.

9
16   Routines

Adjusting the wiper nozzles

Adjusting the wiper nozzles

The wiper nozzles are positioned below 
the windscreen (D and E).

쮿

Use a needle to adjust the spraying 
range of the wiper nozzles.

>Note!
The wiper nozzles are correctly adjusted 
if the jet of water strikes approximately 
the centre of the windscreen.

Routines  9
17

Care notes

Care notes

Regular care will protect your car from 
external influences both on the outside 
and in the inside and will help it to 
retain its value.

>Important!
Please observe the instructions for use 
printed on the packaging of the cleaning 
agents.

We recommend that you use smartcare 
products, as

 they exhibit excellent cleaning 

capability and provide an optimum 
level of protection,

 the products have been specifically 

designed with the smart's materials in 
mind and

 all smartcare products are free of dyes 

and fragrances.

>Note!
All smartcare products are available 
from a qualified specialist workshop, 
e.g. a smart center.

The following types of dirt should be 
removed immediately:

 Bird droppings

 Tree resins

 Dead insects etc.

>Note!
Failure to remove such dirt immediately 
can cause damage to the paint. These 
factors are environmental influences 
that are not covered by warranty.

9
18   Routines

Care notes

Washing the car

Things you should watch out for before 
washing your car!

쮿

Remove caked
on grime such as

 dead insects, bird droppings and 

tree resins,

 oils, grease, fuel and tar.

쮿

Do not aim the high
pressure cleaning 
jet directly on the vehicle's seals.

Removing insects
Remove insects before you start to wash 
the car.

쮿

Use the smartcare insect remover 
spray.

쮿

After this, allow the insect remover to 
work itself in for a few minutes.

쮿

Rub it in lightly with a damp cloth or 
sponge.

쮿

Rinse off thoroughly with a generous 
supply of water.

쮿

Apply hard wax to the cleansed surface.

Removing tar
Remove any tar marks before washing the 
car.

쮿

Apply the tar remover with a damp 
cloth.

쮿

After this, allow the tar remover to 
work itself in for a few minutes.

쮿

Rub it in lightly.

쮿

Rinse off thoroughly with a generous 
supply of water.

쮿

Apply hard wax to the cleansed surface.