cooling MERCEDES-BENZ CLK CABRIOLET 2004 User Guide

171
Controls in detail
The rmotronic* (intelligent air conditionin g)
Switching off /opening
6 Press the Obutton for longer than
two seconds.
The indicator lamp in the button goes
out. The side windows and the sliding /
tilting sunroof* move back to their ori g-
inal position. Air-recirculation mode is
switched off.
i If you op ena window orthe slidi ng/tilting
sunroof* manually after they have been closed
us ingthe convenienc e closing featu re,the ywi ll
remain in this positio nwhen opened using the
convenience opening feature. Ac
tivated charcoal filter with pollutant- sensitive air-re
circulation mode
The act ivat ed charcoal filter reduces pol-
lutants and odours taken into the vehicle
from the outside air. You can swi tch the
activated charcoal filter on or off as you
wi sh.
Th ermotronic automatically switches to
ai r-rec irculation mo deif:
! the activated charcoal filter is switched
on
! speci fied carbon monoxide or nitro gen
oxide values are exceeded in the out-
side air
i Polluta nt-s ensitive air-recirculation mode is
not avai lable if the cooling function is switched
off ( =
page 172) or the out side temperature has
fallen below 5°C.
Switching on
6 Press the ebutton.
The indicator lamp in the button lights
up. The activated charcoal filter is
switched on. Switching off
6 Press the ebutton.
The indicator lamp in the button goes
out. The activated charcoal filter is
switched off.
When you switch off the engine, you can
heat the vehicle for up to a further 30 min-
utes us ing the engine's residual heat.
i Theheatingtim edepen dson:
! the interior temperature seton the control
panel ( =page 165)
! the coolant temperature
The blower runs at a low speed regardless of the
air flow setting. G
Risk of accident Make sure that nob
ody can become trapped
when the slidin g/tilting sunroof* and the
sid ewindows are bei ngclosed.
Pr ess the roof switch in the appropriate
dire ction to halt the closing procedure and
open the slidi ng/tilting sunroof*. Residual heat209en_d2.boo Seite
171 Dienstag, 25. Mai 2004 7:26 19

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
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174 Controls in detail
Heater booster system* for vehicles
with a diesel engine
During the warm-up phase after the engine
is started, the heater booster system
ensures that:
! the engine reaches normal operating
temperature more qui ckly
! the vehicle interior is heated more
quickly
The heater booster system is switched on
when:
! the heater booster system is activated
! the outside temperature is below 8 °C
! the coolant temperature isbelow
70 °C You can use the operating system to con-
figure the settings for heater bo
oster sys-
tem operation ( =pag e128)
!Automatic:
The heater booster system is activated
and is switched on and off automati-
cally as required
!
Off:
The heater booster system is deacti-
vated Using Thermatic
/Thermotronic*
!
AC -OFFoff:
The heater booster system and cooling
can be switched on or off using the
± button
! Therm atic ( =page 154)
! Ther motronic* ( =page 164)
The heater booster system is switched
off if the indicator lamp inthe ± but-
ton is lit. Heater booster
system* forvehicles
with a diese lengine 209en_d2.boo Seite
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244 Operation
Engine compartmentOpening
The release lever for the bonnet is
located
in the footwell above the parking brake.
1 To release the bonnet 6
Pull release lev er1 in the driver's
footwell.
The bonnet is released.
2 Bonnet catch
6 Reach into the opening, push the han-
dle of bonnet catch 2upwards and lift
the bonnet.
! Make sure that th ewindscreen wipers are
not folded away from the windscreen. You could
ot he rwise damage the windscreen wipers or the
bonnet. Engine compartment
Bonnet
G
Risk of accident Do not pull the release lever while
the vehi-
cle is in motion. The bonnet could otherwise
open. P 88.40-2427-31 neu P 88.40-2215-31 neu G
Risk ofinjury There is a ris
kof injury ifth e bonnet is open,
ev en when the engine is not running.
Eng ine compone nts may become very hot.
To avoid burning yourse lf, only touch those
components listed as permissible in the
Ow ner's Manual, and observe the relevant
warni ngnotes.
Vehicles with a petrol engine:
The engine has an electr onic ignition system
which carries a high voltage. For this reason,
you must ne ver tou chanyign ition sy stem
components (ign ition co il, ignition cables,
spark plug connections, test socket) while:
! the engine is running
! the engine is being started
! the ignition is switched on and the en-
gine is being cra nked by hand
The cooling fa ncan al sorun on au tomatical-
ly for up to ten minutes aft erthe key has
bee nremoved from the ignition. Keep away
fro mt hearea ofrotation of the fan blades. 209en_d2.boo Seite
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247
Operation
Engine compartment
There is no need for you to check the oil
level in the autom atictransmission. In the
event of oil loss or problems with gear
shifts, have the automatic tr ansmiss ion
checked at a qualified specialist workshop,
e.g. at a Mercedes-Benz Service Centre.
Coolant is a mixture of water, antifreeze
and corrosion inhibitor. Only check the
coolant level when the vehicle is standing
on a level surface and the engine has
cooled down.
The expansion tank is located in the engine
compartment on the right-hand side when
vi ewed inthe direction of travel. 1
Expans ion tank
6 Slowly unscrew the cap by about one
half turn and allow exc esspr essure to
escape.
6 Then continue to unscrew the cap and
rem ove it.
6 The coolant level is correct if:
! when the coolant is cold, it reaches
the mark inthe expansion tank filler
neck
! when the coolant is hot, it reaches
approximately 1.5 cm higher 6
Top up the coolant in the filler neck if
necessary.
6 Rep lace th e cap by tur ningitt o the
stop.
You will find further informat ion about
coolant inthe "Technical data" section
( = pa ge 415). Oil level in automatic
transmission* Coolant
G
Riskof injury The
coolingsyste mi s pressurised. You
shou ld therefore only unscrew the cap once
the engine has cooled down. You could oth-
er wi se be scald edby hot coolant. P20.30-2149
-31 209en_d2.boo Seite
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309
Practical advice
Tr ou bleshooting Problem Possible cause Suggested solutions
The indicator lamp in the
±button in
the Thermatic /Thermotronic* control
panel lights up or flashes when you press
the button. The air-condi tioning system
cannot be switched on. The cooling system is losing refri
gerant. 6
Have the climate control system
checked at a qualified specialist work-
shop, e.g. a Mercedes-Benz Service
Centre. The PASSEN
GER AIRBAG OFF warning
lamp is lit on the centre console. A ch
ild seat is fitted to the front-passen-
ger seat. The front-passenger airbag has
been dea ctivat ed. There is no child seat fitted to the front-
pas
senger seat. The child seat recognition
system has malfunctioned. 6
Have the child seat recognition checked
at a qualified specialist worksho pwhi ch
has the necessary specialist kno wledge
and tools to carry out the work required.
Mercedes-Benz recommends that you
use a Mercedes-Benz Service Centre for
this purpose.
In particular, work relevant to safety or
on safety-related systems must be car-
ried out at a qualified specialist work-
shop.
G Otherwise, there is a risk of injur y. selbs
thi.fm Seit e309 Dienstag, 1. Juni 2004 7:03 19

314 Practical advice
Trouble
shoo ting Problem Possible cause Suggested solutions
D
The red coolant warning lamp
lights up wh ile the engine is
running. There is insufficient coolant in the reservoir. 6
Top up the coolant immediately, oth-
erwise the engine could ove rheat
(= page 247). If this warning lamp lights up frequently,
there is a leak in the cool
ing system. 6
Have the cooling system checked. If the coolant lev
elis correct, the radiator fan
may be faulty. 6
If the coolant temperature is below
12 5° C, you can drive on to the near-
est qualifie dspec ialist wor ksho p, e .g.
a Mercedes-Benz Servi ceCentre.
6 Avoid plac ing a heavy strai non the en-
gi ne (e.g. driving on mountain roads)
and stop /start driving. D
The red coolant warning lamp
lights up while you are dri ving
and you can hear an audible
warning. The coolant temperature has
exceeded
125 °C. 6
Stop as soon as possible and allow
the engine and the coolant to cool
down. 209en_d2.boo Seite
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415
Te
chnical data
Service products and capacities
The following values indicate the various
total cooling system capacities.
Co rrosion in hibitorand antifreeze
concentration for antifreeze protection down to –45 °C (55%)
The coolant is a mixture of water, corro-
sion inhibitor and antifreeze. It performs
the following functions in the coo
ling sys-
tem:
! Anti-corrosion protection
! Antifreeze protection
! Raising the boiling point !
Always use a suitable coolan t–even in
co untri eswith high temperature s.
If you do not do so, the cooling system will not be
suffici ently protected from corrosion, and the
boiling point wil lbe too low. If antifreeze
/corrosion inhibitor is present
in the correct concentration, the boiling
point of the coolant will be around 130 °C. Coolant
CLK 200
KOMPR ESSOR CLK 200
CGI CLK 240 CLK 320 CLK 500 CLK 55
AMG CLK 270
CDI Coolant with manual
transmission 8 l 8 l 10 l – – – 12.4 l
Coolant
withautomatic
transmission* 8 l 8 l 10 l 10 l 12 l 12 l 12.4 l
CLK 200
KOMPRESSOR CLK 200
CGI CLK 240 CLK 320 CLK 500 CLK 55
AMG CLK 270
CDI with manual transmission 3.6 l 3.6 l 4.5 l – – – 5.
6 l wi
th automatic transmission* 3.6 l 3.6 l 4.5 l 4.5 l 5.
4 l 5.4 l 5.
6 l 209en_d2.boo Seite
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416 Technical data
Service products and capacities
The antifreeze and corrosion inhibitor con-
centration in the cooling system should:
! be at least 50%. This will pro tect the
cool ing sy stem against freezing down
to approximately –37 °C.
! not exceed 55% (antifreeze protection
down to –45 °C), since the heat is then
not dissipated as effectively.
If the vehicle has lost coolant, top it up with
equal parts of water and an antifreeze and
corrosion inhibitor. Mercedes-Benz recom-
mends that you use an antifreeze and cor-
rosion inhibitor which has been approved
for Mercedes-Benz.
! The co oling system has a permanent supply
which must be renewed after 15 years or
250,000 km at the most.
Merc edes-Be nzrecommends that you use an an-
tifreeze and cor rosion inhibitor which has been
appr oved for Mercedes-Benz. Over a period of time, the brake fluid ab-
sorbs moisture from the air; this reduces
its boiling point.
i
There is usually a notice in the engine com-
partment to remind you when the next brakeflu-
id change is due. The windscreen washer reservoir holds
approximately
3litres on all models with
aw indscreen washe rsystem. On models
with a heated windscreen washer fluid res-
ervoir ora headlamp cleaning system*, the
re servoir holds 6litres.
The head lamp cleaning system* and the
windscreen washer system have a com-
mon supply from the windscreen washer
fl uid reservoir.
6 Fill the windscreen washer fluid reser-
voirwith a solution of water and wind-
screen washer concentrate. Adapt the
mix ing ratio to sui tthe outsi detemper-
atures.
The windscreen wipers leave no marks.
The headlamp cleaning system and the
windscreen washer system do not
freeze. Brake fluid
G
Riskofaccident If the boiling
point of the brake fluid is too
low, vapour pockets may fo rmin the brake
system when the brak esare applied hard
(e.g. when driving dow nhill). This would im-
pair braki ngefficiency.
Have the brake fluid renewed every
tw oy ears. Windscreen washer sys
tem G
Riskof fire Winds
creen washer concentrate is highly
fla mm able. Fire, naked fl ames and smoking
are prohibited when you are handling wind-
sc reen was herc oncentrate. 209en_d2.boo Seite
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