engine MERCEDES-BENZ CLK CABRIOLET 2004 Manual PDF

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

245
Operation
Engine compartment Clos
ing
6 Lower the bonnet and let it drop closed
from a height of about 20 cm.
You will hear the bonnet catch engag-
ing.
6 Check that the bonnet has engaged
properly.
If the bonnet can be raise dslightly, itis
not prope rly locked. Open itagain and
close it with a little more force.
The vehicle consumes a maximum of 0.8 l
of oil per 1,00 0km, depending on the driv-
ing style adopted. Oil consumption may
also be hi gher if:
! the vehicle isnew
! you often drive at high engine speeds
You will only be able to estimate the oil
consumption after you have driven a con-
siderable distance. i
Lubricant additives maynot be use dsince
th ey could damage the asse mblies. The useof
suc h ad ditive s,wh ich have notbee nappro ved by
Me rcedes-Benz, will result in limitation of war-
ra nty right s.
You may obtai nfurth erinformation fro many
Me rcedes-Benz Service Centre. Ch
ecking thee ngineoil level
When checking the oil level, the vehicle
must:
! be standing level
! be at normal operating tempe rature
! have been standing with the engine
switched off for at least five minutes
Ch eck the engine oil level using the ope rat-
ing syst em.
6 Turn the key to position 2in th eigni-
tion lock. The
standard display appears in the mul ti-
function display (= page 120).
6 Press the korj button on the
mu lti-function steering wheel repeat-
edly until the following message ap-
pears in the display:
After measuring, the following messag-
es may appear: !Engine oillevel o. k.
!Add1.0l itre to reachmax. oil
level!
!Add 1. 5litre sto reach max. oil
level!
!Add 2. 0litre sto reach max. oil
level!
6 Top up the oil ifnecessary. En
gine oil P 54.30-5240-31209en_d2.boo Seite
245 Dienstag, 25. Mai 2004 7:26 19

246 Operation
Engine compartmentToppi
ngup the engine oil
Th e illustration shows an 8-cylinder engine
1 Filler neck
6 Unscrew the cap on filler neck 1.
Make sure that you do not add too
much oil.
! You must have any exces soil drained or si-
pho ned off at a Mercedes-Benz Service Centre,
for example. The engine or the catal ytic co nvert-
er co uld oth erwi se be dam aged. 6
Screw the cap back onto the filler neck. Other messages in the display
If the engine is at normal operating tem-
perature and there is too much oil, you will
see the following message:En
gine oil le vel Reduce oil level!
6Siphon off any excess engine oil.
If too much oil is added, ther eis a risk
of damage to the engine or the catalyt-
ic converter. If the key is not in position
2in the ignition
lock, you will see the following message:
Turn on ignition to see engine oil
level!
6 Switch on the ignition.
If you see the following message:
Observe waiting time:
!You may repeat the measurement in
five minutes when the eng ine is at
normal operating temperature.
! You may repeat the measurement in
30 minutes when the engine isno long-
er at normal operating temperature.
If you see the following message:
Engine oillevel No twhen engi neon!
6Switch off the engine and wait for
five minutes before measuring when
the engine is at normal operating tem-
per atur e.
You will find further information about
engine oil inthe "Technical data" section
( = page 414).
i Press thek orj button on th e multi-
functio nsteeri ng wheel if you wish to clear the
message.
P
18.00-2066-31 H
Environmental note Wh
entopping up th eoil, take care not to
spill any. Oil must not be allowed to escape
into the soil or wate rways. You would other-
wise be damaging the environment. 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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248 Operation
Engine compartment
The windscreen
washer system and the
headlamp cleaning system have a common
supply from the windscreen washer fluid
re servoir. The reservoir has a capac ityof
either three or six litres (for vehicles with
either the headlamp cleaning system* or
the heate dwindscreen washer reservoir*).
Add windscreen washer concentrate to the
water all year round to prevent smearing.
Use:
! a washer flu idaddit ive, e.g. MB Sum-
merwash, for temperatures above
freezing point, to prevent smearing. !
a washer fluid additive, e.g. MB Winter-
wash, when there is a risk of frost, to
prevent the water from freezing on the
windscreen.
Mix the windscreen was her fluid in a con-
tainer beforehand. Adapt the mixing ratio
to sui tthe outside temperatures.
The windscreen washer fluid reservoir is
located in the front of the engine compart-
ment on the left-hand side when viewed in
the direction of travel.
1 Filling the windscreen washer fluid res-
er vo ir Opening the wash
er fluid reservoir
6 Pull cover 1up by the tab (arr ow). Closing the washer
fluid reservoir
6 Push cov er1 onto the filler neck until
it fully engages.
! Vehicle swith hea dlamp cleaning system*:
On lyuse wind screen washe rfluid which is suita-
ble for plastic lamp lenses. Uns uitabl ewind-
screen wa sherfluidcould damage the plastic
lamp lenses of the headlamps. Windscreen washer system,
headlamp cleaning system*
G
Risk of fire Windscreen washer concentrate is highly
fl am mable. Fire, naked flames and smoking
ar ethere fore prohibit edwhen youare han-
dling windscreen was herco ncentrate. P01
.00- 2226-31 209en_d2.boo Seite
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255
Operation
Driving tips
You will find basic driving tips inthe
"Getting started" section ( =page 32). On
long and steep downward gradients,
you shou ldshi ftto a lower gear (shift rang-
es 1,2or 3) (
=page 137). This prevents
the brakes overheat ing and wearing too
qui ckly.
If you have subjected the brakes to a very
high load, do not switch the vehicle off im-
mediately, but drive on for a short dis-
tance. The brakes will cool more qui ckly in
the airflow.
If you drive for a long period in heavy rain
withou tbr ak ing, the first tim eyou br ake:
! the brakes may not react immediately
! you may have to depress the brake
more firmly
You should therefore maintain a greater
distance from the vehicle in front. Brake carefully after driving on a
wet road
surface, particularly if sal thas been spread
on the road. The brake discs will become
warm, will dry quicker and will be protect-
ed from corros ion.
If you only use the brakes moderately, you
shoul doccasionally check their effective-
ness. To do so, brake more firmly and at a
higher speed. This improves brake grip.
Mercedes-Benz recommends that, for
safety reasons, you only fit brake pad sto
your vehicle whi chhave been approve dfor
Mercedes-Benz. Brake pads whi chhave
not been approved for Mercedes-Benz ve-
hicles may adversely affect the safety of
your vehicle. Dr
iving tips Rolling with the engine swi
tchedoff G
Risk of accident There is no power assistance for the
steer-
ing or service brake when the engine is not
running.
You will re quire considerably more effort to
st eer and brake and you could therefore
lose control of the veh icle and cause an
accid ent.
Never switch the engine off while the vehicle
is in motion. Braking
G
Risk of accident Make sure that other road users ar
enot en-
dangered when you brake. 209en_d2.boo Seite
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256 Operation
Dri
ving tips
CLK 55 AMG High-performance brake system
The high-performance brake system is de-
signed for heavy loads. This means that
there may be noise under braking. This de-
pends on:
! Speed
! Braking force
! Environmental conditions, e.g. temper-
atureand humidity
The wear of individual components in the
brake system, e.g. brake pad sor brake
discs, depends on:
! your individual drivin gstyle
! the operating conditions
For this reason ,it is not possible to provide
a general indication of wear based on mile-
age. Wearis particularl y highif an aggres-
sive style of driving isadopted. If a certain amount of water has accumu-
lated on the road surface, there is a danger
of aquaplaning, even
if:
! you are driving at low speeds
! the tyre tread is of sufficient depth
You should therefore avoid driving in tyre
ru ts and should brake carefully. If you have to drive on stretches of road on
which water has collected, pl
ease note
that:
! you must not drive on stretches of road
flooded to a still water depth gre ater
than 25 cm
! the maximum speed you may drive at is
walking speed
! Note that vehicles in front or oncoming vehi-
cles create waves. This may meanthat the max-
imum permitted water depth is exceeded.
Yo u must observe thesenotes, other wise dam-
age ma yocc urto the:
! Engine
! Electrics
! Transmission Driving
inwet weather Driving on flooded roads209en_d2.
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257
Operation
Winter driving
Have your vehicle winterproofed at a
qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre, at the on-
set of winter. This servi ceincludes the fol-
lo wi ng:
! Engine oil change,
if the current oil used has not been
approved for winter use
! The antifreeze /anti-corrosion
concentration is checked
! A concentrated cleanin gagent is
added to the windscreen and headl amp
cleaning system fluid*
! The battery is checked
! A tyre change Us
ewinter tyres at temperatures below
+7 °C and on snow or ice-covered roads.
Th e maximum effect of the ABS and ESP
dri ving systems is on lyachieved in win ter
with these tyr es.
Us ewinter tyres of the same make and
tread on all wheels to maintain safe han-
dling characteristics. Always observe the maximum permitted
speed sp
ecified for the winter tyres you
have fitted. If you fit winter tyres whi ch
have a lower maximu mpermitt ed speed
than that of the vehicle, affix an appropri-
ate warning sign in the driver's field of
vision. This ca nbe obtained at a qualified
specialist workshop, e.g. at a Mercedes-
Benz Service Centre.
In such circumstances, you should also
restrict the maximum speed of the vehicle
to the maximum permitted speed for the
winter tyres using permanent Speedtronic
( = pa ge 211). Winter dri
ving Win
terty res* G
Risk of accident You must re
place wint ertyres with tread
de pth sof less than 4 mm immediately.
These tyres are no tsuitable for use in winter
an d do not provide sufficient grip. You could
therefore lose control of the vehicle and
cause an accide nt. 209en_d2.boo Seite
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258 Operation
Winter driving
Do not exceed the maximum permissible
spee d of 50 km /h. Remove the snow
chains as soon as pos sible if you are no
longer driving on snow-covered roads.
i Youmay wish to deactivate ESP when pull-
ing away on snow chains ( =
page 70). This will
help you to achieve an effective cutting action.
If you are intending to fit snow chains,
please remember the follow ing:
! Snow chains cannot be fitted on all
whee l/tyre combinations.
! Fit snow chains only to the rear wheels.
Comply with the manufacturer's instal-
lat ion instructions.
! Mercedes-Benz recommends that, for
safety reasons, you only use snow
chains wh ich have been approved for
Mercedes-Benz.
! Youmust not fit snow chains to AMG tyres. You should drive particularly carefully on
icy roads. Avoid sudden accelerati
on,
steering mo vements and braking.
If the vehicle threatens to skid or cannot
be brought to a standstill at a low speed:
! shift in toneut ral
! move the selector lever to N
! try to keep the vehicle under control
using corrective steering G
Risk of accident If you fit the spare wheel
*when driving with
winter tyres, pl ease be awarethat driving
stability will beimp aired owing to unstable
cornering characteristics cause dby the dif-
ferent tyres. You should ther efore adapt
your driving style and drive carefully.
Have the spare wheel* changed at the near-
est qualifi edspecialist workshop which has
the necessary specia list knowledge and
tools to carry out the work required.
Mercedes-Benz recomme nds that youuse a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety
or on safety-re lated systems must be car-
ried out at a qualified specialist workshop. Snow chains Winter driving
G
Risk of accident Do not
change down for additio nal engine
braking ona slippery road surface. The drive
whe els may los egrip. 209en_d2.boo Seite
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265
Operation
Service
ASSYST, the A ctive S ervice Syst em, tells
you when the next service is due.
Approximately one month before the next
service is due ,one of the following mes-
sages will appear in the multi-function dis-
play while you are driving or the ignition is
switched on:Se rvice A in.. days
Se rvice A in.. km
Se rvice A due now!
TheService AorService Bmessages pro-
vi de information about the type of service
which is due. i
Thetime between individual services de-
pends on your sty leof driving. Amoderate style
of driving atmedium engine speeds and avoidi ng
short trips increase this time.
The service indicator is cleared automati-
cally after 30 seconds. You can also clear
it yourself.
6 Press the reset button on the left-hand
side of the instrument cluster
(
= page 12). If you have missed the service due date,
the following messages appear in the
multi-function display:
Service
A exceededby.. days
Service A exceededby.. km
A signal also sounds.
A qual ified specialist workshop, e.g. a
Mercedes-Benz Serv ice Centre, will reset
the service indicator after the service work
has been carr ied out.
i You could be in breach of rele vant regula-
tions by failing tohave the spe cified service
carried out. Service
P54.30-5239-31 Clearing the service indicator Missi
ngthe service due date 209en_d2.boo Seite
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