engine MERCEDES-BENZ CLK CABRIOLET 2004 Workshop Manual

147
Controls in detail
Automatic transmiss ion*
6 Press program selector sw itch 1
repeatedly untilMfor manual gearshift
program Mappears in the speedome-
ter display.
The autom atic tra nsm ission switches
to ma nual gearshif tprogram M. Auto-
matic shifting is deactivated. The shift
range is not restricted.
When the selector lever is in position D,
you can shift up or down manually through
the individual gears. The gear curr ently
selected and engaged is shown in the
speedometer displ ay.
Upshifting
! In manual gearshift pr ogram M,the auto-
matic transmi ssion doe snot shift up eve nif the
engine speed reaches the overrevving range.
Wh enthe max imum perm issibl e speed forthe
current gear isreached, the fuel supply iscut off
to prevent th eengine fro moverrevving. You
must make sure th atthe engine speed does not
reach the red area in the rev counter. There is
otherwise a danger of engine damage.
Shift up a gear if the
^upshift symbol appears
in th erev counter display inste adof
M. 6
Press the selector lever briefly to the
right, towards D+.
or
6 Press the right-hand button on the
steering wheel (
=pag e145).
The automatic transmission shifts to
the next gear up.
Downshifting
6 Press the selector lever briefly to the
left,to wa rds D–.
or
6 Press the left-hand button on the steer-
ing wheel (
=page 145).
The automatic transmission shifts to
the next gear down. i
If you brake or come to a halt without chang-
ing to a lower gear, the automatic tra nsmission
will shift down to a gear from which you can
acce lerate or pull away easily.
Kickdown
It is not possible to use kickdo wnin man-
ual gearshift program M.
i Manual gearshift program Mis deselected if
you:
! pressthe program selector switch
(= page 141).
!
SorCappears in the speedometer display in
th is ca se.
! restart the engine.
The auto matic tra nsmission switche sto an
au tomatic gearshift program in this case. G
Risk of accident Do
not chan gedown for additional eng ine
braking ona slippery road surface. The drive
wheels could lose their grip and the vehicle
could skid. 209en_d2.
boo Seite 147 Dienstag, 25. Mai 2004 7:26 19

156 Controls in detail
Thermatic (automatic air conditioning)
Thermatic is only operational if the engine
is running. Optimum performance is only
guaranteed if you dr
ivewith the windows
and sli ding /tilting sunroof* closed.
You can switch Thermatic off completely
as you require ( =pa ge 157).
You can allow the air condi tioning to adjust
autom atical ly (
=page 157) or you can
control it manually ( =page 159).
In automatic mode, Thermatic cools or
heats the vehicle interior depending on:
! the temperature selected
! outside temperature
! sunlight
In automatic mode, you rare lyneed to alter
the temperature, airflow or air distributio n.
The combination filter installed filters out
most dust particles and pollen comp letely. i
The interval for replacing the filter depends
on environmental influences, such as high levels
of air pollution. The interval may be shorter than
tha tspecifi edin the Service Booklet .A filter
reduces the quantity of air suppli edto the vehi-
cle inte rior.
6 In warm weather, ventilate the vehicle
for a short time, e.g. using the summer
open ing feature (=
page183).
This ensures that the desired interior
tempe rature is achieved more rapidly.
i Observ e the following instructions to ensure
that Thermatic functions correctly:
! Keep the air inlet onthe bonnet free from
deposi ts, e.g. ice or snow, to ensure the flow
of fre shair to the vehicle interior.
! Make sure tha tthe air vents and vent ilation
grilles in the vehicle interior are always kept
cl ear. i
Cond ensation may drip from the underside
of the vehi cle when Thermatic isin cooling
mode. G
Risk of accident Follow the settings recommended on the fol-
lowing pages for heating or cooling. The win-
dows coul dotherwise mist up. As a result, you
may nolongerbe able to observe road and
traffic conditions and cause an accident. H
Environmental note The
cooling system uses th erefri gerant
R134A. This refrigerant does not damage
the earth's ozone la yer. 209en_d2.boo Seite
156 Dienstag, 25. Mai 2004 7:26 19

157
Controls in detail
Thermatic (automatic air conditioni ng)Switching
off
6 Turn air flow control 1to0.
i Air supply and air circulation are also
switched off when Thermatic is switche doff.
Onl yuse these settings for a short time. The win-
dows could otherwise mist up. Switching
on
6 Turn air flow control 1to1or higher. You can sw
itch automatic air-conditioning
control on or off control as required.
i Inautomatic mode, you will only rarely need
to adj ustth e temperature, airflow and air distri-
bu tion. Switchi
ngon
6 Briefly press the Ubutton when the
engine is running.
The indicator lamp in the button lights
up. Te mperature, airflow and air distri-
bution are controlled automatically.
6 Set the desired temper atur e separa tely
fo rdriver's side 2and front-passen-
ger side 3using the temperature con-
troller.
The temperature of the vehicle interior
is adjusted automatically. Switching off
6
Press the Ubutton.
The indicator lamp in the button goes
out. Automatic te mperature, airflow
and air-distribution control are
switched off.
You can now adjust air distribution
( = page 158) and airflow ( =page 159)
manually. Switching Thermatic on
and off Controlling
the air condit ioning
automatically 209en_d2.boo Seite
157 Dienstag, 25. Mai 2004 7:26 19

161
Controls in detail
Thermatic (automatic air conditioni ng)
Air-recirculation mo de with conven-ie
nce opening /closing feature
Sw itching 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. Switching of
f/openi ng
6 Press the Obutton for longer than
two seconds.
The indicator lamp in th ebutton goes
out. The side windows and sliding /
tilting sunroof* move back to their orig-
in al po sition. Air-recirculation mode is
switched off.
i If you open awindow or the sliding /tilting
sunroof* manually after the yhave been closed
usi ng the convenience closing feature, they will
re main in this position when ope ned using the
conve nience op ening feat ure. The cooling function is operational when
the engine is running and cools accord
ing
to the te mperature selected for the vehicle
interio r.The cooling function also dries the
air inside the vehicle, the reby providing
effective protection against the windows
misting up. 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*. Switching cooling on
/off G
Risk of accident If you switch off the cooling function, the
vehicle will not be cooled in the event of
wa
rmer weath erconditions. The windows
could therefore mist up more quickly. Asa
res ult, you maynolonger be ab le to obs erve
road and tra ffic conditions and cause an
acciden t. 209en_d2.boo Seite
161 Dienstag, 25. Mai 2004 7:26 19

166 Controls in detail
Thermotronic* (intelligent air conditio
ning)
Thermotronic is only operational when the
engine is running. Optimum performance
is only guaranteed if you drive with the win-
dows and sliding /tilting sunroof* closed.
You can switch off Thermotronic com-
pletely if required ( =page 167).
You can allow the air condi tioning to adjust
autom atical ly (
=page 167) or you can
control it manually ( =page 168).
In automatic mode, Thermotronic cools or
heats the vehicle interior depending on:
! the temperature selected
! outside temperature
! sunlight
The combination filter installed filters out
all:
! dust particles of a certain size
! pollen i
The interval for replacing the filter depends
up on enviro nmenta linfluenc es, such ashigh le v-
els of air pollution. The interval may be short er
tha nthat specified in the Service Booklet. A filter
reduces the quantity of air suppli edto the vehi-
cle inte rior.
6 In warm weather, ventilate the vehicle
for a short time, e.g. using the summer
open ing feature (=
page 183).
This ensures that the desired interior
tempe rature is achieved more rapidly.
i Observ e the following instructions to ensure
th at Thermotroni cfunctions correctly:
! Keep the air inlet onthe bonnet free from
deposi ts, e.g. ice or snow, to ensure the flow
of fre shair to the vehicle interior.
! Make sure tha tthe air vents and vent ilation
grilles in the vehicle interior are always kept
cl ear. i
Cond ensation may drip from the underside
of the vehi cle when Thermotro nicis in cooling
mode. G
Risk of accident Follow the settings recommended on the fol-
lowing pages for heating or cooling. The win-
dows coul dotherwise mist up. As a result, you
may nolongerbe able to observe road and
traffic conditions and cause an accident. H
Environmental note The
cooling system uses th erefri gerant
R134A. This refrigerant does not damage
the earth's ozone la yer. 209en_d2.boo Seite
166 Dienstag, 25. Mai 2004 7:26 19

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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192 Controls in detail
Driving systemsCruise control lever
The cruise control lever is used to operat
e:
! cruise control or Distronic*
! variable Speedtronic
i Thelastspe ed store d is clea redwhen you
stop the engine.
The cruise control lever is the uppermost
lever on the left of the steering column.
The LIM indicator lamp on the cruise con-
trol lever indicates which system you have
selected:
! Cruise control, Distronic*:
LIM indicator lamp off
! variable Speedtronic:
LIM indicator lamp lit 1
To store the current speed or a higher
speed
2 To store the current speed or a lower
speed
3 To deactivate cruise control
4 To resume the last speed stored
5 To switch between cruise control,
Distronic* and Speedtronic
6 LIM indicator lamp Cr
uise control disp lay in theinstru- ment cluster
When cruise contro
lis active:
! the stored speed is shown in the multi-
function display
! the segments from the stored speed up
to the maximum speed light up in the
spee dometer
i The segme ntsin the speedometer flash (or
go out onthe CLK 500) if cruise control isdeac-
tivated, e.g.:
! ifth e vehicle is aquapla ning
! if you move the selector lever to Nwhile the
vehicl eis in motion
P54.25-3820-31 209en_d2.
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194 Controls in detail
Driving systemsi
Cruise control may be unable to maintain
th es tored spee dwhen driving up hillordow nhill.
The stored speedisresumed when th egradi ent
eve nsout.
i Vehicles with manual transmission:
When you change gear, depress the accelerator
pedal slightl yto increase the smooth nessof the
gear change.
When you depress the clutch pedal and engage a
different gear, the engine speed may increase
slight lyuntil a gear is engaged.
! Always dri veat suffi cient bu tnot excess ive
engine speeds.
! Change gear in good time.
! Donotch an ge down several gears at a time
if possible. Resuming a stored speed
1 To resume a stored speed 6
Press the cruise control lever briefly in
the direction of arrow 1.
6 Release the accelerator pedal.
Cruise control is activated and adjus ts
the vehicle's speed to the last speed
stored. Setti
nga higher speed
1 To set a higher speed
6 Press and hol dthe cruise control
lever inthe direction ofarrow 1until
the desi redsp eed has been reached. G
Riskofaccident Only resume the
store dspeed if you know
what th isspeed is and if it isappropriate for
the curre ntroad and traffic conditi ons.Oth-
erwise, sudden acceleration or braking
could endanger yourself and others. 209en_d2.boo Seite
194 Dienstag, 25. Mai 2004 7:26 19