2004 MERCEDES-BENZ CLK CABRIOLET brakes

208 Controls in detail
Driving systems
Storingthe current speed
1 To store the speed
2 To store the speed
6 Press the cruise control lever briefly in
the direction of arrow 1.
The current speed is stored.
All models except CLK 500:
Speedtronic rounds the speed up to
the next multiple of 10 km /h.G
Risk of accident If there is a change of drivers, advise the
new driver of the stored speed limit.
Only use variable Speedtronic if you are sure
that you will not have to accelerate suddenly
to a speed abo vethat sto reda s the speed
limit. You could othe rwise cause an acci-
dent.
It is only possible to exceed the stored li mit
speed if you deactivate variable Speed-
tronic, e.g. by depressing the accelerator
pedal beyond the pressure point (kic kdown). G
Risk of injury CL
K5 00:
Speedtronic brakes th evehicle automati-
cally to preve nttheset speed from being
exceeded. When this happens, the brake
pedal is depressed.
Do not place your foot under the brake pedal
as it could be trapped. 209en_d2.
boo Seite 208 Dienstag, 25. Mai 2004 7:26 19

213
Controls in detail
Driving systems
PT S is activat ed automatically when
you switch on the ignition. PTS is deacti-
va ted when the speed exceeds 15 km /h.
The Parktronic system is reactivated when
the vehicle's speed falls below this.
PTS monitors the area around your vehicle
using six sensors in the front bumper and
four sensors in the rear bumper.
1 Sensors in the front bumper Ra
nge of the sensors
The sensors must be free from dirt, ice and
slush, otherwise they may not function cor-
rectly. Clean the sensors regularly, taking
care not to scratch or damage them. Fr
on t sensors
Rea rsensors
! Pay particular attention to objects above or
below sensors whe nparking, such asflower pots
or tra iler towbars. PTS doe snotdetect such
ob ject swhen theyare in th e immediat evicini ty.
Yo u could other wise damage the vehicle or
objects.
Sources ofultraso nicwaves, such as alorry's
co mpressed-air brakes or a pne umatic drill could
ca use PTS to malfunction.
P54.65-2427-31 P54.65-2428-31
P54.65-2429-31 Centre 100 cm
Corners 60 cm
Centre 120 cm
Corners 80 cm209en_d2.boo Seite
213 Dienstag, 25. Mai 2004 7:26 19

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
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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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383
Practical advice
Towing Securing the towing eye
6
Remove the towing eye and the wheel
wrench from the vehicle tool kit
(= page 276).
6 Screw in the towing eye clockw ise to
the stop.
6 Insert the wheel wrench handle into the
towing eye and tighten. Removing the towing eye
6
Remove the wheel wrench from the ve-
hicle to olkit.
6 Insert the wheel wrench handle into the
towing eye and turn the wheel wrench
anti-clockwise.
6 Unscrew the to wing eye.
6 Insert the top of cover 1byits tab in
the front bumper and press the bottom
of the cover inuntil it engages.
or St
andard vehicles:
6 Insert the bottom of cover 2by its tab
in the rear bumper and press the top of
the cover in until it engages.
or
AMG veh icles:
4 To fit the cover
6 Hook the cover in the rear bumper on
the right-hand side and slide it fully
over to the right (direction of arrow) 4.
6 Apply light pressure on the left-hand
side of the cover.
6 Put the towing eye and the wheel
wrench back into the vehicle tool kit. !
Theengine must not be running ifyo ua re
towing the vehicle with the front axle raised. Ap-
pli ca tion of the brakes by ESP would otherwise
da ma ge the braking sy stem on the rear axle be-
yond repair. Vehicles with manua
l transmission
6 Switch on the ignition (key inposition 2
in the ignition lock).
6 Make sure that no gear is engaged. P 88.20-2440-31 Towing the vehicle209en_d2.boo Seite
383 Dienstag, 25. Mai 2004 7:26 19