2004 MERCEDES-BENZ CLK COUPE cooling

168 Controls in detail
Thermotronic* (intelligent air conditio
ning)
Set the temperature separately for each
side of the vehicle using controls 3and
d and 6and bfor the driver's side and
front-passenger side respectively.
Only change th etemperature in small
increments, idea lly starting at 22 °C. Increasing the tempe
rature
6 Pres s and hol dtemperature button 3
or 6 with the red triangle until the
required temperature appears in the
control panel display.
Thermotronic adj usts to the set tem-
pe rature. Re
ducing the temperatu re
6 Press and hol dtemperature button b
or d with the blue triang leuntil the
required temperature appears in the
contro lpanel display.
Thermotronic adj usts to the set tem-
pe rature. You can adjus
tair distribution separately
for each side of the vehicle automatically
( = pa ge 167) using the Ubutton or
manually.
The symbols on the air distribution display
have the following meaning: Controlling
airdi stribution manually
6 Turn air-distrib ution control 1or8 to
the desired symbol.
The indicator lamp in the Ubutton
goes out. Auto matic air distribution is
switched off. Air distribution iscontrol-
led according to the position of the
control selected.
Co ntr olling air distribution for the cock- pit air vent
6
Open the air vent at the top of the cock-
pit.
The air is distributed evenly in cooling
mode. Setting
thetemperature Co
ntrolling air distribution manually Symbol Meaning
Z Directs air to the windscreen
and
through the dem iste r
vents to the side windows b Dire
cts air to the wind-
screen, through the centre,
side and coc kpit air vents,
through the demister vents
to the side windows, and
into the front and rear foot
wells Y Directs air into
the front and
rear footwells a Dire
cts air through the cen-
tre, side and cockpit air
vents 209en_d2.boo Seite
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170 Controls in detail
Thermotronic* (intelligent air conditio
ning)
6 When the win dscreen isclear, press
the P button again.
The indicator lamp in the Pbutton
goes out. Windscreen miste
dup on the outside
6 Switch on the win dscreen wipers
(= page 41 ).
6 Close the air vent at the top of the
coc kpit.
If Thermotronic automatic mode is
switched off: 6 Turn air-distribution control 1or8 to
a orY . You can switch off the flow
offresh air if
unpleasant smells are entering the vehicle
from outside. No more fresh air is taken in
and the air inside the vehicle isrecircu-
lated. Switching on
6
Press the Obutton.
The indicator lamp in the button lights
up.
i Air-recirculation mode switches onautomat-
ically at high out side temperature s.The indicator
lamp in theO button is not lit.
Ou tside air is taken in after approximately
30 minutes. Switching
off
6 Press the Obutton.
The indicator lamp in the button goes
out.
i Air-recirculation mode switche soff auto-
matically:
! after around 30 minutes at outsid etem pera-
tures above approximately 5°C
! after around five minutes at outside temper-
atures below approximately 5°C
! after around five minutes if the cooling func-
tio nis swit chedoff (
=page 172)
Air-recirculation mode with conven- ience
opening /closing feature
Switching on /closing
6 Press the Obutton for longer than
two seconds.
The indicator lamp in the button lights
up. The side windows and the slidin g/
tilting sunroof* close. Air-recirculation
mode isswitched on. Air-rec
ircu lation mode G
Risk of accident Only switch over to air-recirculation mode
briefly if the outside
temperature isbelow
5° C. The window scould oth erwise mist up.
As a result, you may no longer be able to
obs erve road and traffic conditions and cause
an acciden t. 209en_d2.boo Seite
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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
172 Dienstag, 25. Mai 2004 7:26 19

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
244 Dienstag, 25. Mai 2004 7:26 19

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