2004 MERCEDES-BENZ CLK CABRIOLET wheel size

70 Safety
Driving safety
systems
! ESP only functions prop erly if whe els with
the recommended tyre sizes are used
( =
page 399).
The engine must not be running if:
! the parking brake is being teste dusing a
dynamometer
! the vehicle is being towed with the front axle
ra ised
Appli cation of the brakes by ESP may otherw ise
des troy the braking system on therear axl e. i
Only use wheels with the recommended tyre
si zes. Only then wil lESP function properly. Activating
/deactivating ESP
It may be best to deactivate ESP in the
following situations:
! if snow chains are being used
! in deep snow
! on sand or gra vel When you deactivate ESP:
! ESP no longer improves driving stability
! the engine's torque isthen no longer
limited and the drive wheels could spin.
This res ults in a cutting action ofthe
spinning wheels for better grip
! traction control is still activated
! you can still brake with support from
ESP
i Thev warning lamp in the instrument
clus ter flashes if ESP isdeactivated and one or
mor ewhe els start to spin. ESP doe snot then sta-
bil ise the vehic le. G
Risk of accident Proceed as follows if the
vwarning lamp
in the speedometer flashes:
! under no circumsta nces should you
de activate ESP
! onlydepress the accelerator pedal as
far as necessary when pulling away
! donot keep your foot onthe ac celerator
while you are driv ing
! adapt your driving sty leto suit the road
and weather conditions
Otherwise ,the vehicle could begin toskid.
ESP cannot reduce the risk of an accident if
you drive too fast. G
Riskofaccident Activate ESP as soon as th
esituations
described above no longer apply. ESP will
ot he rwi sebe unable to stabilise the vehicle
if the vehicle starts to skid or when a wheel
spins. 209en_d2.
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249
Operation
Tyres and wheels
! For safe tyreasons, Mercedes-Benz recom-
mend syou only use tyre swhich have bee nspe-
cially approved for yourvehicle byMercede s-
Benz. These tyres are specially suite dto your
vehicle's control systems, such as ABS or ESP.
Mercedes-Benz can accept no responsibility for
damage resulting from using tyr esother than
those approved for your ve hicle .Information
about tyr esmay be obtained from any
Mercedes-Benz Serv ice Centre.
If you use tyres other tha nthose which have
been test edand recommended for Mercedes-
Benz, cha racteristics suc hashandling, noi se
levels and fuel consum ption may beadversely
affected. Moreo ver, dimensional variations and
different tyre defo rmation characteristics when
running under load could cause the tyre to make
contact with thebo dywork or axle components.
The consequen cecould be damage to the tyre or
to the vehicl e. !
Retreaded tyres are neither tested nor
re commended for Mercedes-Benz vehicle s,as
previous damage cannot always be det ectedon
re treaded tyres. As aresul t, Me rced es-Benz
ca nnot guarantee driving safety.
Modification work on the brake system
and wheels is not permi tted, nor is the use
of spacer plates or brake dust shields. Any
such modifications invalidate the vehicle's
genera loperating permit. !
Only fit tyres and wheels of the same
type and make.
! Onlyfit ty res of the correct size to the
wh eels.
! Run in new tyres at moderate speeds
forthe first 10 0km.
! Check the tyres and wheels for damage
regularly, at least every 14 days. Dam-
aged rims could cause a loss of tyre
pre ssur ean d damag eto th e wheels.
! Check the tyre pressures regularly and
correct them if necessary – see Fuel
fil ler cap (
=pa ge 241).
! Do not continue to use tyres with se-
vere lyworn treads. Tyre grip dec reases
rapidly on wet roads below a tread
depth of 3 mm. Tyres and wheels
G
Risk of accident Only use wheels of the dimensions
stated in
the vehicle registration documents. If other
wheel sizes are used:
! the wheel brakes or chassis compo-
nents could be damaged
! wheel and tyre clearance scan be no
longer guaranteed Poi
nts to bear inmind 209en_d2.boo Seite
249 Dienstag, 25. Mai 2004 7:26 19

250 Operation
Tyres and wheels
!
Fit single new tyres on the front wheels
first if tyres of the same size are fitted
on the front and rear wheels.
! Remove the rust from corr oded steel
wh eels and repaint them.
! Replace the tyres at least every
6years, irrespective of their degree
of wear.
! Adjust the tyre pressures if the vehicle
is laden – see Fuel filler cap
(= page 241).
! Storetyres ina cool, dry place, preferably in
the dark. Protect the tyres from oil, grease,
petrol and diesel.
Do not clean your wheels with acidic wheel
cl eaners since these could corrode the wheel
bolts. Tyres with a specified direction of rotation
offer additional benefi
ts,e.g. with regard
to aquaplaning. These benefits are only
available to you ifthe correct direction of
rotation isobserved.
An arrow on the sidewa llof the tyre indi-
cates its correct direction of rotation.
i A spare wheel* may also be fi tted against
th edirection of rotatio n. The MO
Extended run-flat system allows
you to cont inue driving your vehicle, even
if there is a complete loss of air in one or
more tyres.
You can only use the MO Extendedrun-flat
system in conjunction with the tyre pres-
sure loss warning system.
For notes about driving in the event of a
flat tyre, see the Practical advice section
( = page 373). Direc
tion of rotation MOExtended
run-flat system* 209en_d2.boo Seite
250 Dienstag, 25. Mai 2004 7:26 19

253
Operation
Tyres and wheels
The standard display app ears in the multi-
function display ( =page 112).
6 Press the jork button on the
multi-function steering wheel repeat-
edly until the following message ap-
pears in the multi-function display:Ty re pressure monitor Reactivation
us ingæ
6 Press the æbutton on the multi-
function steering wheel.
The fo llowing message appears inthe
display:
Ty re press. nowOK?
If you want to confirm activation:
6Press the æbutton on the multi-
function steering wheel again.
The following message appears inthe
display:
Ty re pressure monitoring
reactivated
After a certain teach-in period, the tyre
pressure loss warning feature monitors
the wheels for loss of pressure. If you want to cancel act
ivation:
6 Press the çbutton on the mul ti-
function steering wheel.
or
6 Wait until the
Tyre press. now OK?
message disappears.
On vehicles with the same size wheels at
the front and rear, the wheels can be inter-
changed every 5,000 to 10,000 km, de-
pend ing on the degree of tyre wear. The
same direction of rotation must be main-
tained. The front and rear wheels wear differently,
depending on the operating conditions.
Interchange the
wheels before too definite
a wear pattern forms on the tyres. The
front tyres typically wear more on the out-
er shoul der, and the rear tyres in the cen-
tre of the tread.
Each time you interchange the wheels,
you should clean the contact areas on the
wheels and brake discs thoroughly. Check
the tyre pressures. Interchanging wh
eels G
Risk of accident Interchange th
efront and rear wheels only if
th ey have the same dimensions, e.g. size,
tread depth, etc. 209en_d2.
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364 Practical advice
Flat tyre
You
can use theT IREFIT kit to sea lsma ll
punctures, particularly those in the tyre's
tread. TIREFIT may be used at outside tem-
pe ratures of down to –20 °C. 6
Do not remove any forei gnbodies
whi chhave penetrated the tyre, e.g.
screws or nai ls.
6 Remove the TIREFIT kit, the accom pa-
nying "max. 80 km /h" sticker and the
electric air pump from the boot
( = pa ge 276).
6 Affix the sti cker in the driver's field of
vision. Using th
eTIREFIT kit G
Risk of fire Smok
ing, fire and nak edflame sare prohibit-
ed when using TIREFIT.
Avoid creating sparks. G
Riskofaccident Your safety is at particular risk and TIREFIT
is unable to repa
ira fl at tyre in the following
situations:
! If there are cuts or punctures in the tyre
gre ater than 4mm in size
! If the wheel is damaged
! If you have driven at very low tyre pres-
sures or with flat tyres
Do not drive any furth er.Consult a qualifi ed
specialist workshop which has the neces-
sa ry special ist knowledge and too lsto carry
out the work required. Mercedes-Benz rec-
om mends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work rel evant to safety or on safety-
related syste msmustbe carried out at a
qualified specialist workshop. 209en_d2.boo Seite
364 Dienstag, 25. Mai 2004 7:26 19

422 Technical terms
Emergency spare wheel Narrow spare wheel which is lighter
and takes up less space than a full-
sized spare wheel.
EN 228 European standard for unleaded petrol.
Engine control system Controls the various engine functions,
e.g. the engine speed.
Engine number Number determined by the manufac-
turer and marked on the cylinder
crankcase, by which each engine can
be clearly identified.
Engine oil viscosity Measure of the internal oil friction (vis-
cosity) at different temperatures. The
higher the temperature the oil can tol-
erate without thinning too much, or the
lower the temperature it can tolerate
without thickening too much, the bet-
ter the viscosity characteristics of the
oil. ESP
(E le
ctronic S tability P ro
gram)
Improves driving stability and ->trac-
tion when cornering and in emergency
situat ions, e.g. when there is a risk of
skidding.
GPS (G lo
ba l P ositioning S ystem)
Syste mfor determining geographical
location. A GPS unit located in the vehi-
cle receives satellite signals, compares
them to a digital map (e.g. on CD ROM)
and uses them to det ermine the posi-
tion of the vehicle and for navigation
pur poses.
GSM (G lo
ba l S ystem for M obile Communica-
tions)
International communication standard
for mob ile phones. Thanks to this uni-
form standard, you can also use your
mobile phone abroad. The transmis-
sion method is digital. Head/thorax airbag
This ty peofairbag isloca tedin the
backrests of the front seats and behind
the side panel inthe rear of the vehicle
and pr otects the occupants in the
event ofa side impact. It provides pro-
tection to the head area inaddition to
that provided by the sidebag.
Headlam p range control
Adjusts the headlamps according to ve-
hicle load, so that onco ming traffic is
not dazzled.
Heat erbooster system
Provides additional heat in the vehicle
interior on vehicles with a diesel en-
gine.
Instrum ent cluster
Displays and indicator lamps in the
driver's field of vision, e.g. the rev
counter, the speedometer and the fuel
gauge. 209en_d2.boo Seite
422 Dienstag, 25. Mai 2004 7:26 19