2004 MERCEDES-BENZ CLK CABRIOLET wheel

254 Operation
Tyres and wheels
Although you may be able to control the
vehicle fully at a given speed on a dry road
surface, you must reduce your speed on a
wet or icy road surface to achieve the
same level of road safety.
You should pay particular attention to the
road conditionswhen the temperatures
are around freezing.
If ice has formed on the road surface (e.g.
due to fog), a thin film of water quickly
forms on the ice when you brake, which
greatly reduces tyre grip. You should drive
part icularly carefully in such weather con-
ditio ns. G
Risk of accident Have th
etight ening torque checked after a
wheel cha ngeat a qual ified specialist work-
shop which has the necessary specialist
knowl edge and tools to carry out the work
require d.Mercedes -Benz rec ommends that
you use a Mercedes-Benz Service Cen tre for
this purpose. In particular ,work relevant to
safety or on safety-relate dsystems must be
carried out at a qualified specialist work-
shop.
The wheel bolts coul dwork loose if they are
not tightened to a torque of 110 Nm.
Mercedes-Benz rec ommends tha t,for safety
reasons, you only use suitable wheel bolts
whi chhave been approved for Mercedes-
Benz. Tyre grip209en_d2.boo Seite
254 Dienstag, 25. Mai 2004 7:26 19

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
257 Dienstag, 25. Mai 2004 7:26 19

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
258 Dienstag, 25. Mai 2004 7:26 19

260 Operation
Trailer towing
The detachable ball coupling is located in
the stowage
wellunder the boot floor.
You wil lfind details of installation dimen-
sions and loads in the "Technical data"
section.
Make a note of the key number in this
Owner's Manual, for example. This will
help you to obtain a replacement key from
a Mercedes-Benz Serv ice Ce ntre quickly,
shou ldyou lose it.
Key nu mber.: ________________ Removing the cover
1 Cover
6 Pull cover 1downwards vertically.
6 Store cover 1in the ball coupling
stowage well next to the spare whee l.2
Key
6 Insert key 2into the ball coupling
lock.
6 Turn key 2anti-cloc kwise.
6 Lift the handwheel off the ball coupling
and turn th ehandw heel clockwise until
it engages.
The whi temarking on the ball coupling
must be aligned with the red marking
on the handwheel. Trailer towing
Trailer tow hitch*
G
Risk of accident Fit the ball coupling with great care as it is
essential for the safety of th
eentire
vehicle /trailer combination. P 31.10-2451-31 Fitting the
ball coupling P 31.10-2452-31209en_d2.boo Seite
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261
Operation
Trailer towing
3 Ball coupling mounting
6 At the mark on the bumper, gu ide the
ball coupling vertically into ball cou-
pling mou nting 3until it engages.
The han dwheel turns in such a way that
green area 4on the handwheel is
aligned with the white area on the ball
cou pling. 4
Green area
6 Turn the key in the direct ion of the ar-
row (to lock).
6 Rem ove the key and press on the cover
cap.
6 Fold out the socket under the vehicle.
i It isbest to remove th e ball coupling if the
tr ailer tow hitch is no longer required. P 31.10-2453-31 P 31.10-2454-31 G
Risk of accident The ball coup
ling is only correctly fitted once
the white ar eaon the ba llcoupling and the
gr ee nar ea on the han dwheelare aligned
and the key can be removed. Unless it is fit-
ted properly, the ball coupling could work
loose.
When the vehicl eis towing a trail er, the ball
coupling must be locked and the ke yre-
moved. Only then is it guaranteed that the
ball coupling issecure and cannot work
loose while the vehicle is being driven.
If the ball coupling can not be locked and the
key cannot be remove d, remove the ball
coupling and clean it ( =
pag e271). If you
still cannot fit (lock) the ball coupling after it
has been cleaned, rem ove it. Insuch cases,
the trailer tow hitch must not be used for
towing because its safety cannot be guaran-
teed. 209en
_d2.boo Seite 261 Dienstag, 25. Mai 2004 7:26 19

263
Operation
Trailer towing
! You should not exceed a maximum
speed of 80 km /h, even incountries
where higher speeds are permitted.
! Avoid sudden braking. Instead, apply
the brake lightly at first, to allow the
trailer to overrun. Then increase the
braking for cerapidly.
! If the trailer starts to swing, reduce
your speed, do not attempt corrective
steering, and brake if necessary. On no
account should you attem pttodraw
the vehicle /trailer combination out by
increasing your speed.
! The gradient-climbing capabi lities from
a standstill are correct for sea level.
When driving in mountainous areas,
note that the power output of the en-
gine, and with itits gradient-climbing
capability from a standstill, decreases
with increasing altitude.
! Do not uncouple a trai ler with anoverrun
brake when the brake is engaged. The spring
action of the overrunning brake mechani sm
could damage the bumper. 6
Fold out the socket under the vehicle.
6 Remove the locked prot ective cap on
the handwheel.
6 Unlock the lock on the handwheel
usin g the key.
6 Hold the ball coupli ngfirmly. Lift the
handwheel off the ball coupling and
turn the handwheel clockwise until it
engages.
The red marking on the handwheel is
aligned with the white marking.
6 Remove the ball coupling by pulling
downwards.
6 Press the ball coupling cover into the
ball coupling recess.
Make sure that the cover is fitted se-
curely. Stowing the ball coupling
6
Stow the ball coupling in the ball
coupling well by the spare wheel. Removing the ball coupling
G
Risk of accident Do not carry the ball coupling unsecured in
the vehicle interior.
Vehicle occupan tscould be injured by the
ball coupling being thrown around in the
vehicle in the event of:
! sharp braking
! a change of direction or
! anaccide nt 209en_d2.boo Seite
263 Dienstag, 25. Mai 2004 7:26 19

266 Operation
Service
6
Switch on the ignition.
The standard display appears in the mul ti-
function display (= page 120).
6 Pres s the k orj button on the
mu lti-function steering wheel repeat-
edly until the 9or´ service
symbol appears in the multi-function
display with the service due date.
i Periods when the battery isdisconnected
ar en ot recorde dbythe timed service indicator.
Yo u must therefore subtract such periods from
the ser vice due dat eyourself.
Do not confuse the service indicator with the
: engine oil level display. If your vehicle is ever service
dother than
at a Mercedes-Benz Serv ice Ce ntre, you
can reset the service indicator yoursel f.
6 Switch on the ignition.
The standard displ ayappears in the multi-
function display (= page 120).
6 Press the korj button on the
multi-function steering wheel repeat-
edly until the 9or´ service
symbol appears in the mul ti-function
display with the service due date.
6 Press and hold the reset button on the
left in the instrument cluster for about
four seconds. The following message appears
inthe
display:Re set service interval?
To confirm pr ess reset button
6To confirm, press and hold the reset
button until asignal sou nds.
The service indicator now displays the
new value.
i Ifyou have reset the service indicator acci-
dentally, a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre, will beableto
upda te itagain. Calling up the
service due date Resetti
ngthe service indic ator 209en_d2.boo Seite
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275
Practical advice
Where will I find...?
Setting up the warni ngtriangle
1 Stand
2 Side reflectors
3 Press-stud
6 Fold stand 1out sideways from the
bottom.
6 Pull side reflectors 2upwa rds to form
a tri angle and lock them at the top us-
ing press-stud 3. The fire exti
nguisher is located under the
front of the driver's seat.
1 Tab
2 Fire extinguisher
6 Pull tab 1down.
6 Remove fire extinguisher 2.
i Have the fire extinguisher refilled after each
use.
Have the fire extinguisher checked every one or
two years, otherwise itco uld fail in an emergen-
cy. Coupé:
The first-aid kit is on the left-hand side of
the boot in the stowage compartment be-
hind the wheel housing when viewed in the
direction of travel.
Cabriolet:
The first-aid kit
ison the right-hand side of
the boot under the boot floor when viewed
in the direction of travel.
i Check the expiry dates of the first-aid kit
contents regularly, and replace them if neces-
sary. P58.00-2031-31 Fire extinguisher*
P 68.00-3283-31 neu First-
aidkit 209en_d2.boo Seite
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