2012 MERCEDES-BENZ SLK ROADSTER catalytic converter

If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
X
Position 0: if Start/Stop button :has not
yet been pressed, this corresponds to the
key being removed from the ignition.
X Position 1: press Start/Stop button :.
You can now activate the windscree nwip-
ers, for example.
i If you the nopen the driver's door when in
this position, the power supply is deactiva-
ted.
X Position 2(ignition): press Start/Stop but-
ton :twice.
i If you press Start/Stop button :once
when in this position and the driver's door
is open, the power supply is deactivated
again.
Removing the Start/Stop button
You can remove the Start/Stop button from
the ignition lock and start the vehicle as nor-
mal using the key.
i You do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. X
Remove Start/Stop button :from ignition
lock ;.
i When you insert Start/Stop button :
into ignition lock ;, the system needs
approximately two seconds recognition
time before you can use Start/Stop but-
ton :. Starting the engine
Important safety notes G
WARNING
Never leave the engine running in enclosed
spaces. The exhaust gases contain carbon
monoxide. Inhaling exhaust fumes consti-
tutes a health hazard and could lead to loss
of consciousness or even death.
! Do not depress the accelerator pedal
when starting the engine.
General notes i
AMG vehicles: the exhaust flap of the
exhaust system will be checked after every
cold start .Aresulting noise can be heard
during this process.
i Vehicles with apetrol engine: the
engine runs at a highe rengine speed during
a cold start so that the catalytic converter
can reach operating temperature more
quickly. The sound of the engine may
change as a result. 128
DrivingDriving an
d parking

i
Follow the shift recommendations in the
multifunction display for an economical
driving style (Y page 136).
i The vehicle locks centrally once you have
pulled away .The locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature (Y page 193).
Automatic transmission i
It is only possible to shift the transmission
from position Pto the desired position if
you depress the brake pedal. Only then is
the selector lever lock released.
X Depress the brake pedal and keep it
depressed.
X Shift the transmission to position Dor R.
X Release the brake pedal.
X Carefully depress the accelerator pedal.
The electric parking brake (Y page 147) is
automatically released.
i The vehicle locks centrally once you have
pulled away.T he locking knobs in the doors
drop down.
You can open the doors from the inside at
any time.
You can also deactivate the automatic lock-
ing feature (Y page 193).
i Upshifts take place at higher engine
speeds after a cold start. This helps the
catalytic converter to reach its operating
temperature more quickly.
Hill starta ssist Hill start assist helps you when pulling away
forwards or in reverse on an uphill gradient.
It holds the vehicle for a short time after you
have removed your foot from the brake pedal.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal and depress it before the vehicle begins to
roll. G
WARNING
Never leave the vehicle when it is held by hill
start assist. After approximately one second,
hill start assist will no longer brake your vehi-
cle and it could roll away.
X Take your foot off the brake pedal.
i Once you have taken your foot off the
brake pedal, the vehicle is held for around
one second.
X Pull away.
Hill start assist will not function if:
R you are pulling away on a level road or a
downhill gradient.
R on vehicles with automatic transmission,
the transmission is in position N.
R the electric parking brake is applied.
R ESP ®
is malfunctioning. ECO start/stop function
Important safety notes G
WARNING
If the ECO symbol appears in the multifunc-
tion display when the engine is switched off,
the engine was switched off automatically.
However, all vehicle systems remain active. If
you open the door, unfasten your seat belt or
remove your foot from the brake pedal, the
engine will automatically start .The vehicle
may begin moving. There is a risk of accident.
To prevent the vehicle from accidentally pull-
ing away, do not release the brake pedal until
you want to drive on.
Do not leave the vehicle until you have
switched off the ignition and secured the vehi-
cle to prevent it from rolling away.
! Always switch the ignition off and take the
key with you when leaving the vehicle. 130
DrivingDriving and parking

H
Environmental note
When topping up the oil, take care not to spill
any. If oil enters the soil or waterways, it is
harmful to the environment.
! Only use engine oils and oil filters that
have been approved for vehicles with a
service system. You can obtain a list of the
engine oils and oil filters tested and
approved in accordance with the
Mercedes-Benz Specifications for Service
Products at any Mercedes-Benz Service
Centre.
Damage to the engine or exhaust system is
caused by the following:
R using engine oils and oil filters that have
not been specifically approved for the
service system
R changing the engine oil and oil filter after
missing the change interval required by
the service system
R using engine oil additives
! Do not add too much oil. Topping up with
too much engine oil can result in damage
to the engine or to the catalytic converter.
Have excess engine oil siphoned off. Example: engine oil cap
X
Turn cap :anti-clockwise and remove it.
X Top up the engine oil.
If the oil level is at or under the MIN mark
on the oil dipstick, add 0.5 to 1.0 litre of
engine oil. X
Replace cap :on the filler neck and turn
clockwise.
Make sure that the cap locks into place
securely.
X Chec kthe oil level again with the oil dip-
stick (Y page 250).
Further information on engine oil
(Y page 307). Checking and adding other service
products
Checking the coolant level G
WARNING
The cooling system is pressurised. Therefore,
only unscrew the cap once the engine has
cooled down. The coolant temperature gauge
must display less than 70 †.Otherwise, you
could be scalded if hot coolant escapes. X
Park the vehicle on a level surface.
Only check the coolant level if the vehicle
is on a level surface and the engine has
cooled down.
X Turn the key to position 2in the ignition
lock (Y page 127).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 127).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
70 †.
X Turn the key to position 0(Ypage 127) in
the ignition lock. Engine compartment
251Maintenance and care Z

Jump-starting
G
WARNING
There is a risk of acid burns when jump-starting a vehicle due to the gases which escape from
the battery. Do not lean over the battery while the engine is being jump-started. G
WARNING
Gases escaping from the battery during jump-starting may cause minor explosions. Avoid cre-
ating sparks. Keep naked flames away from the battery, and do not smoke.
Comply with safety precautions when handling batteries. You will find these under "Battery (vehi-
cle)" in the index. G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
! Avoid repeated and lengthy starting attempts. Otherwise, the catalytic converter could be
damaged by the non-combusted fuel.
Do not use a rapid charging device to start the vehicle. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jump
leads. Observe the following points:
R the battery is not accessible in all vehicles. if the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or ajump-starting device.
R you may only jump-start the vehicle when the engine and catalyti cconverter are cold.
R do not start the engine if the battery is frozen. let the battery thaw first.
R jump-starting may only be performed from batteries with a nominal voltage of 12 V.
R only use jump leads that have a sufficient cross-section and insulated terminal clamps.
R If the battery is fully discharged, leave the battery that is being used to jump-start connected
for a few minutes before attempting to start.T his charges the empty battery a little.
R Make sure that the two vehicles do not touch.
Make sure that:
R the jump leads are not damaged.
R bare parts of the terminal clamp do not come into contact with other metal parts while the
jump leads are connected to the battery.
R the jump leads cannot come into contact with parts such as the V-belt pulley or the fan.
These parts move when the engine is started and while it is running.
X Secure the vehicle by applying the electric parking brake.
X Manual transmission: engage neutral.
X Automatic transmission: move the selector lever toP.
X Switch off all electrical consumers (e.g. radio, blower, etc.).
X Open the bonnet (Y page 248). Jump-starting
277Breakdown assistance Z

Transporting the vehicle
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting
purposes.
X Vehicles with manual transmission:
shift to neutral.
X Vehicles with automatic transmission:
tur nthe key to position 2in the ignition
lock.
X Move the selector lever to N.
As soon as the vehicle is loaded:
X Prevent the vehicle from rolling away by
applying the parking brake.
X Vehicles with manual transmission:
shift to first gear or reverse gear.
X Vehicles with automatic transmission:
move the selector lever to P.
X Turn the key in the ignition lock to position
0 and remove the key from the ignition
lock.
X Secure the vehicle.
! Only lash the vehicle down by the wheels
or wheel rims, not by parts of the vehicle
such as axle or steering components. Oth-
erwise, the vehicle could be damaged. Tow-starting (emergency engine
starting)
When tow-starting, it is important that you
observe the safety instructions (Y page 278)
and the legal requirements in each respective
country.
! Vehicles with automatic transmission
must not be tow-started. The transmission
may otherwise be damaged.
You can find information on "Jump-starting"
at (Y page 277). Before tow-starting the following conditions
must be fulfilled:
R
the battery is connected.
R the engine has cooled down.
R the catalytic converters have cooled down.
X Switch on the hazard warning lamps
(Y page 103).
X Fit the towing eye (Y page 279).
X Secure the rigid towing bar or the towing
rope.
X Depress and hold the brake pedal.
X Turn the key to position 2in the ignition
lock.
X Depress the clutch pedal and keep it
depressed.
X Engage neutral.
X Release the brake pedal.
X Tow-start the vehicle.
X Engage second gear.
X Release the clutch pedal slowly;d o not
depress the accelerator pedal while doing
so.
The engine is started.
X Depress the clutch pedal and shift to neu-
tral.
X Stop at a suitable place.
X Depress the parking brake.
X Remove the rigid towing bar or towing rope.
X Remove the towing eye (Y page 280).
X Switch off the hazard warning lamps. Electrical fuses
Important safety notes
G
WARNING
Only use fuses that have been approved for
Mercedes-Benz vehicles and which have the
correct fuse rating for the systems con-
cerned. Do not attempt to repair or bridge
faulty fuses. Using fuses which have not been
approved or attempting to repair or bridge
faulty fuses could cause the fuse to be over- Electrical fuses
281Breakdown assistance
Z