2004 MERCEDES-BENZ CLK CABRIOLET fuel

172 Controls in detail
Thermotronic* (intelligent air conditio
ning) Switching on
6 Switch off the ignition.
6 Press the Tbutton.
The indicator lamp in the button lights
up. Switching off
6
Press the Tbutton.
The indicator lamp in the button goes
out.
i The residual heat function is automatically
sw itched off:
! whe nyou switch on the ignition
! after about 30 mi nutes
! ifthe battery voltage drops The cooling function
isoperational when
the engine is running and coo lsaccording
to the temperature selected for the vehicle
interior. The cooling function also dries the
air inside the vehicle, thereby providing
effective protection against the windows
misting up. Switching
off
You can switch off the cooling function. Air
in the vehicle is then neither cooled nor
dried.
6 Press the ±button.
The indicator lamp in the ±button
lights up. After a del aythe cooling func-
tion swi tches off. Switching
on
The windows may mist up if the air is
damp. You can use the cooling function to
dry the air.
6 Press the ±button.
The indicator lamp in the ±button
goes out. The cooling function is
switched on. Switching coolin
gon/off G
Riskofaccident If you swi
tch off the cooling function, the
vehicle will not be cooled in the event of
warmer weather conditions. The windows
could therefore mist up more quickly. As a
result, you mayno longer be able to obs erve
road an dtraffic conditions an dcause an
accident. H
Environmental note Au
tomatic air condi tion ingr equire sl ess
energy when the cooling is switched off. You
ca n then redu ceyour fuel consumption and
cause less environmental damage. 209en_d2.boo Seite
172 Dienstag, 25. Mai 2004 7:26 19

175
Controls in detail
Auxil iary heating /ventilation*
The auxiliary heating heats or ventilates
the vehicle interior to the temperature that
you have set using the temperature con-
trol.
You can set up to three sw itch-on times
using the operating system, one of whi ch
can be preselected ( =pa ge 126).
You can switch the auxiliary heating /
ve ntilation on and off immediately using:
! the sw itch on the centre console
(= page 176)
! the remote control ( =page 176)
In order to call up the Heater submenu in
the operating system directly:
6 Make sure that the ignition is set to 1
or 2.
6 Briefly press the auxiliary heating /
ventilation swi tch (
=pag e176). The auxiliary heating switches off automat-
ically after 50 minutes. You can have this
time changed. To have this done, please
visit a qua lified specialist workshop, e.g. a
Mercedes-Benz Service Centre.
i The fuel tankmu st be at least a quarter full
to ensur eth at the auxiliary heating can operate. i
The auxiliary heatin g/ventilation automati-
cally adjusts to variat ions inthe outside temper-
ature and changes in wea ther. It is therefore
poss ible for the auxiliary heating to switch from
ventilation mode to heating mode or from heat-
ing mode to ventilation mode.
6 It is preferable to set the air condition-
ing to U.
i The auxi liary heating /ventilation can be
switched on ev en if theair conditioning isset to
manual. However, optim umcomfort wil lonlybe
achiev edif the air conditioning is set to U.
6 Set the interior temperature to the
desired value.
The auxiliary heating /ventilation
adjusts to the temperature set.
i Itis recommended that you set the temper-
ature to 22 °C. Auxiliary heati
ng/ventilation* G
Risk of fire and poisoning Ex
ha ust fumes are produced when the auxil-
iary heating is inoperation. For this reason,
switch off the auxiliary hea ting in confined
spaces which do not have an extraction sys-
tem, e.g. a gara ge.
Operating the auxiliary heating at filling sta-
tions or when refuelling your vehicle isprohib-
ited. For this reason, switch off the auxiliary
heati ngwhe nref uellin g. Be
fore switching on 209en_d2.boo Seite
175 Dienstag, 25. Mai 2004 7:26 19

239
Operation
The first 1,500 km
Refuelling
Engine compartment Tyres and wheels Driving tips
Winter driving
Driving abroad Trailer towing ServiceCare 209en_d2.boo Seite
239 Dienstag, 25. Mai 2004 7:26 19

241
Operation
Refuell ing
The fuel filler flap is located to the rear on
the right-hand side. The fuel filler flap is
locked and unlocked automatically with
the remote control when you lock or un-
lock the vehicle. 1
To open the fuel fil ler flap
2 To insert the fuel filler cap in holder
6 Remove the key from the ignition lock.
6 Open the fuel filler flap. To do this,
press on fuel filler flap 1in the direc-
tion of the arrow.
The fuel filler flap folds out.
6 Turn the fuel filler cap anti-clockwise
and remove it. 6
Place the fuel filler cap in the holder on
the ins ide of fuel filler flap 2.
6 Only fill the tank until the pump nozzle
switches off.
6 Replace the fuel filler cap. Close it by
turning it clockwise.
The fuel filler cap engages audibly.
6 Close the fuel filler flap. The catch en-
gages.
i You will generally find inform ation about the
petrol grade onthe filling pump. If not, ask the
fill ing station attendant.
CLK 200 Kompressor, CLK 240, CLK 320,
CLK 500:
Premium unleaded petrol with a minimum
octane rating of 95 RO N/85 MON.
i As a very temporary meas ure, you may
also use regular un leaded petrol, 91 RON /
82.5 MON. This may reduce power and increase
petrol consumption. Avoid the use of full throttle. Refuelling
G
Risk ofinjury Fuel is highly flammable. Fire, naked flames
and smoking are prohibited when fuel is be-
ing handled.
Switch off the auxiliary
heating when refuel-
ling.
Do not allow fuel tocome into contact with
sk in or clothing. Your health maybe dam-
aged if:
! you spill fuel onto your skin
! you inhale fuel vapours P88.60-2065-31 neu
Pet
rol (EN 228) 209en_d2.boo Seite
241 Dienstag, 25. Mai 2004 7:26 19

242 Operation
Refuell
ing
CLK 200 CGI, CLK 55 AMG:
Super un leaded sulphur-free petrol with
am inimum octane rating of 98 RON /
88 MON.
i As a very temporary meas ure, you may
also use premium unleaded petrol, 95 RON /
85 MON. This may reduce power and increase
petrol consumption. Av oid the use of full throttle.
! The following mayle ad to increased wear or
engine damage:
! The use ofpetrol which does not com ply with
EN 228
! The useof fuel additives
The use offue lsand /orfuel addit iveswhich
have not been approved may result inlimitation
of warrant yrights. Leaded petrol
You may fill up
with leaded petrol incoun-
tries where unleaded petrol is not availa-
ble. This shortens the interval for replacing
spark pl ugs to 20,000 km.
6 Consult a Mercedes-Benz Service
Centre before using leaded petrol.
! Leaded petrol damages the catalytic con-
verter and the Lambda probe.
If you exceed theinte rval for replacing the spark
plu gs, this ma y cause increased wear and engine
damage.
You may obtain furthe rinformation from any
Mercede s-Be nz Service Centre. i
You will generally find inf ormation about the
diesel grade on the filling pump. If not, askth e
filling station attenda nt.
We recommend having the engine oil
change devery 7,500 km in countries
where only diesel fuel with a sulphur con-
tent exceeding 0.5 percent by weight is
available.
! Use of the following may lead toincreased
we ar or engine damage:
! Diesel which does not compl ywith EN 590
! Marine diesel fuel
! Heating oil
! Vegetable oil methyl ester (VOME)
! Fuel additives ("b iodiesel", FAME fue ls)
The use of fuels an d/or fuel additives which
have not bee napproved may result in limitation
of warranty right s. Diesel (EN 590)209en_d2.boo Seite
242 Dienstag, 25. Mai 2004 7:26 19

243
Operation
Refuell ing
Low outside temperatures
To prevent operating problems, diesel with
improved cold flow qualities is available
dur ing the winter months.
You can use winter diesel at temperatures
down to about –20 °C without problems.
To improve flow properties, it is possible to
mix diesel with kerosene and flow improv-
er.
The mixing ratio depends on the type of
diesel and the outside temperature. How-
ever, it should be kept as low as possible.
! Do not mix diesel with petrol. This would
dam aget he fuel system. 6
Add a maximum of 50% kerosene or
flow improver to the diesel.
6 Only mix diesel with kerosene in a con-
tainer that has been approved for hold-
ing fuels; do not mix them in the fuel
tank.
6 Put the kerosene into the container
first, then add the diesel.
After a few minutes' driving, the mix-
ture spreads to all parts of the fuel
system. G
Risk of injury Please
note that as a result ofaddin gkero-
sene, the die sel is more easily ignited. Outside
tempera-
ture Summer
diesel Kero-
sene
–15
°C to
–23 °C 80% 20%
–23
°C to
–30 °C 50% 50%
Outside
tempera-
ture Winter
diesel Kero-
sene
–25
°C to
–30 °C 80% 20%
–30
°C to
–35 °C 50% 50%209en_d2.boo Seite
243 Dienstag, 25. Mai 2004 7:26 19

249
Operation
Tyres and wheels
! For safe tyreasons, Mercedes-Benz recom-
mend syou only use tyre swhich have bee nspe-
cially approved for yourvehicle byMercede s-
Benz. These tyres are specially suite dto your
vehicle's control systems, such as ABS or ESP.
Mercedes-Benz can accept no responsibility for
damage resulting from using tyr esother than
those approved for your ve hicle .Information
about tyr esmay be obtained from any
Mercedes-Benz Serv ice Centre.
If you use tyres other tha nthose which have
been test edand recommended for Mercedes-
Benz, cha racteristics suc hashandling, noi se
levels and fuel consum ption may beadversely
affected. Moreo ver, dimensional variations and
different tyre defo rmation characteristics when
running under load could cause the tyre to make
contact with thebo dywork or axle components.
The consequen cecould be damage to the tyre or
to the vehicl e. !
Retreaded tyres are neither tested nor
re commended for Mercedes-Benz vehicle s,as
previous damage cannot always be det ectedon
re treaded tyres. As aresul t, Me rced es-Benz
ca nnot guarantee driving safety.
Modification work on the brake system
and wheels is not permi tted, nor is the use
of spacer plates or brake dust shields. Any
such modifications invalidate the vehicle's
genera loperating permit. !
Only fit tyres and wheels of the same
type and make.
! Onlyfit ty res of the correct size to the
wh eels.
! Run in new tyres at moderate speeds
forthe first 10 0km.
! Check the tyres and wheels for damage
regularly, at least every 14 days. Dam-
aged rims could cause a loss of tyre
pre ssur ean d damag eto th e wheels.
! Check the tyre pressures regularly and
correct them if necessary – see Fuel
fil ler cap (
=pa ge 241).
! Do not continue to use tyres with se-
vere lyworn treads. Tyre grip dec reases
rapidly on wet roads below a tread
depth of 3 mm. Tyres and wheels
G
Risk of accident Only use wheels of the dimensions
stated in
the vehicle registration documents. If other
wheel sizes are used:
! the wheel brakes or chassis compo-
nents could be damaged
! wheel and tyre clearance scan be no
longer guaranteed Poi
nts to bear inmind 209en_d2.boo Seite
249 Dienstag, 25. Mai 2004 7:26 19

250 Operation
Tyres and wheels
!
Fit single new tyres on the front wheels
first if tyres of the same size are fitted
on the front and rear wheels.
! Remove the rust from corr oded steel
wh eels and repaint them.
! Replace the tyres at least every
6years, irrespective of their degree
of wear.
! Adjust the tyre pressures if the vehicle
is laden – see Fuel filler cap
(= page 241).
! Storetyres ina cool, dry place, preferably in
the dark. Protect the tyres from oil, grease,
petrol and diesel.
Do not clean your wheels with acidic wheel
cl eaners since these could corrode the wheel
bolts. Tyres with a specified direction of rotation
offer additional benefi
ts,e.g. with regard
to aquaplaning. These benefits are only
available to you ifthe correct direction of
rotation isobserved.
An arrow on the sidewa llof the tyre indi-
cates its correct direction of rotation.
i A spare wheel* may also be fi tted against
th edirection of rotatio n. The MO
Extended run-flat system allows
you to cont inue driving your vehicle, even
if there is a complete loss of air in one or
more tyres.
You can only use the MO Extendedrun-flat
system in conjunction with the tyre pres-
sure loss warning system.
For notes about driving in the event of a
flat tyre, see the Practical advice section
( = page 373). Direc
tion of rotation MOExtended
run-flat system* 209en_d2.boo Seite
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