2004 MERCEDES-BENZ CLK CABRIOLET wheel torque

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.
boo Seite 70Diens tag, 25 .Mai 2004 7:26 19

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

373
Practical advice
Flat tyre
6 Press electr icair pump switch 2toI.
The electric air pump isswitched on.
The tyre ispumped up.
! Do not run the electric air pump for longer
than six minutes without a break, oth erwise it
may overheat.
The air pump can be used again once it has
cooled down.
6 Pum pup the tyre to 2.5 bar (this takes
about fi veminutes).
6 Press the switch on the electric air
pump to 0.
The electric air pump isswitched off.
If a tyre pressure of 2.5 bar is exceeded:
6 Open the pressure release screw on
pressure gauge 4until the tyre pres-
sure is adjusted.
6 Return the air pump to the stowage
well and close it. Lowering the vehicle
6
Lower the vehicle. To do this, turn the
crank anti-clockwise until the vehicle is
once again firmly on the ground.
6 Put the jack to one side.
1 –5 Wheel bo lts
6 Tighten the wheel bolts evenly inthe
sequence indicated. The tightening
torque must be 110 Nm. 6
Turn the jack back to its initial position
and return it and the rest of the vehicle
toolkit to the boot.
You can only use the MOE emergency run-
flat system in conjunction with the tyre
pressure loss warning.
! The maximum distance you may cover in
run-flat mode depends on the vehicle load. It is
50 km if the vehicle is partially laden and 30 km
if it is fully laden.
The maximum distance that may be drive nin run-
flat mode begins from the time the tyre pressure
loss warning appears in the multi-function dis-
play.
Yo u must not exceed a maximum speed of
80 km /h. P 40.10-2740-31 G
Risk of accident The wheel bolts may work loose if they are
not tightene dto a tightening torque of
11 0Nm . For this reason, you should have
the tightening torque checked as soonas
possible after a wheel change. MOE
emergencyrun-fl atsyst em* 209en_d2.boo Seite
373 Dienstag, 25. Mai 2004 7:26 19

421
Technical terms
Distronic* System which helps the driver to keep
to a pre-selected speed on motorways
and major roads:
! If there is no vehicl ein front, the
system operates inthe same way
as ->crui secon trol.
! If a vehicle is detected ahead,
Distronic automatically adjusts the
speed of the vehicle so that you al-
ways maintain the set minimum dis-
tance to the vehicle in front.
Draught stop Screen behin ddriver's seat and pas-
senger seat which reduc esthe draught
in the vehicle interior when the roof has
be en lowered. Drive train
Collective term for all vehicle compo-
nents which belong to the drive, such
as the:
! engine
! clut ch
! ->transmission
! ->auto matic transmission
! ->torque converter
! ->differenti allock
! ->transfer case
! propeller shafts
! drive shafts
! ->wheels
DTR* (->D istr onic)e mark
Mark of certification in accordance
with current EU directives.
Easy entry Facilitates getting into the rear of the
vehicle by moving the front seats for-
wa rds.
ELCODE (El ectronic Code System)
Sy stem whi chelectronically checks
wh ether a person entering or driving
the vehicle is entitled to do so, and
wh ich forms part of the anti-theft sys-
tem in Mercedes-Benz veh icles.
EMC (E lectrom agnetic C ompatibility)
The ele ctrical and electronic compo-
nents of the vehicle are protected from
interference fields, such as transmit-
ters, radar systems, overhead power
lines or mobile phones. 209en_d2.boo Seite
421 Dienstag, 25. Mai 2004 7:26 19

424 Technical terms
Maximum torque Maximum ->torque that is achieved at a
given engine speed. The higher the
max imum torque, the greater the pow-
er delive red to the wheels by the en-
gine.
Memor yfunction*
Memory for three individual seat, steer-
ing wheel and mirror positions. Posi-
tions are saved for each key and/or
->KEYLESS GO key*.
Menu The ->operating system displays are ar-
ranged in menus. Several commands
are grouped together in the men us, e.g.
the Audio menu contains theSelect
station
orOperate the CD playercom-
mands. You can change the settings for
your vehicle directly using these com-
mands. Minispare
->Emergency spare wheel
MON (M otor O ctane N umber)
Indicates the petrol octane number de-
termined by standard methods. MON is
a measure of the ->knock resistance of
the pet rol.
Multi-function display Display in the ->instrument cluster
which shows information about the
->operati ngsystem and system mes-
sages.
Multi-function ste ering wheel
Steering wheel with buttons which you
use to contro lthe ->operating system.
On-board voltage
The vehicle's voltage, influenced by
outgoing lines, electrical consumers
and return lines. The battery can re-
ceive and produce extremely high elec-
tric alcurrent without causing a
significant change in the voltage. Operating system
You can use the operating syst emto
look up information about your vehicle
and to make settings. This information
is displayed on the ->multi-function dis-
play. The buttons on the ->multi-func-
tion steering wheel are used to control
the displ ayand the settings in the oper-
at ing system.
Overrevving range Speeds in the red area of the rev coun-
ter at which the engine can only oper-
ate for a shor tperiod.
Overrun mode Passive acceleration (deceleration) of
the vehicle, e.g. if you drive downhi llor
release the accelerator pedal.
Parking brake Prevents th evehicle from rolling away
when it is parked. 209en_d2.boo Seite
424 Dienstag, 25. Mai 2004 7:26 19

425
Technical terms
Parktronic* System wh ich makes parking easier by
giving the driver visual and audible sig-
nals.
Partial load mode Engine operating status in which only
part of the maximum engine output or
maximum torque isused, e.g. in ->over-
run mo de.
Program selector switch In vehicles wit h->automatic transmis-
sion*, switch used to shift between
"sport mode" and "comfort mode" or
to select the "manual gear shift pro-
gram"*. This aff ects the gearshift ing
characteristics of the transmission.
PTS* (->P ar
kt ronic s ystem*)
Ra
insen sor
Automatica lly switches the winds creen
wipers on in the event of rain.
RDS (R adio D ata S ystem)
Digital data transfer system for UHF ra-
dio stations.
Re arward-facing child seat
Special ->restraint system for children
up to nine months of age or weighing
up to 10 kg. If a rearward-f acing child
seat wi thautomatic ->child seat recog-
nition is fitted, the sensor system pre-
ve nts the front-passenger airbag from
being triggered.
Re stra int systems
Seat bel ts,belt tensioners, belt force
li miters, airbags and child restraint sys-
tems. As independent systems, their
protecti vefunctions complement one
another. Ribbed mats
Floormats with anti-slip rubber surface.
Rim Part of the ->wheel to whi chthe tyre is
fitted. Term commonly used for both
rim and wheel disc.
Roll-o ver ba rs
Occupant prote ction system consisting
of plastic-coated stee lpipes. The roll-
over bars are retracted in the bodywork
under normal driving conditions.
! The roll-over bars are raised auto-
matically in critic al driving situa-
tions.
! You can raise and lower the roll-
over bars manually.
RON (R esearch O ctane N umber)
Indicates the petrol octane num ber de-
ter mined bystan dard methods. RONis
a measure of the ->knock resistance of
the petrol. The RON is approximately
te n points higher than the ->MON. 209en_d2.boo Seite
425 Dienstag, 25. Mai 2004 7:26 19

427
Technical terms
TIR EFIT kit
Accessories for temp orary repairs to
flat tyres. The TIREFIT kit consists of a
filler bottle with sealant, a filler hose,
and a valve core extractor with valve
and an electric air pump.
To rque
Force exerted around a central axis of
rotation, e.g. when a wheel bolt is tight-
ened. For engines, the torque isthe
force transferred to the ->transmission.
To rque conver ter
This has the same function on vehicles
with ->autom atic tra nsmission as the
clutch has on vehicles with manual
->transmission.
Tr ac tion
Force which is transferred from the ve-
hicle to the road via the tyres and
whi chdescribes the grip. Traction mode
Acti veacceleration of the vehicle by
adding more throttle.
Transmission Component of the ->drive train that
converts the high speed of the engine
tolower rotation speeds at the drive
wheels and thus optimises the transfer
of engine ->torque to the wheels.
Wheel Term used in everyday language to de-
note ->rim, wheel disc and tyre.
Xe non headlamps*
Headlamps whi chuse an electric arc
in stead of a heated fil ament to gener-
ate a more intense light. 209en_d2.boo Seite
427 Dienstag, 25. Mai 2004 7:26 19

441
Index T
Tail lamp cl uster
Ch ang ing . . ..... . . ..... . . . ...361
Tail lamps
Di splay message . . . . ..... . . . ..302
Tank capacity .... . . . .... . . . ...410
Ca lling up the range
(operating system) . . . . . . . . . . . . .132
Ga uge .. . . . .... . . . ..... . . ..13 ,15
Te chnical data
Acce leration . . . . . . . .. . . . . . . ... 398
En gine . . . . ..... . . ..... . . . ...394
Frequencies for garage
door openers . . . . . . . . . . . . . . . . .417
Speed . . . . .. . . . . . . .. . . . ..3 95–397
Trailer loads . . . . . . . .. . . . . . . ... 407
Tr ailer tow hitch.. . . . .... . . . ...405
Tyres . . . . .. . . . . . . .. . . . ..3 99–403
Ve hic ledimensions . . ..... . . . ..404
Ve hic leweight ... . . . .... . . . ...408
Wheels . . . .. . . . . . . .. . . . ..3 99–403
Te lep hone
Di splay message . . . . ..... . . . ..296
Operating (operating system) . . . .133
Redialling (operating system) . . . .135 Telephone book
Diall ing a number
(operating system) . . . . . . . . . . . . .134
Tel ephon ebr acket
Installing /removing . . . . . .. . . . .. 234
Telephon ecompartment . .. . . . .. 227
Temperature Adjusting (Thermatic) .. . . . ...... 158
Adjusting (Th ermotronic ). .. . . . .. 168
Selecting the display
(operating system) . . . . . . . . . . . . .119
Thermatic . . .. . . . . . . . . . . .. . . . .. 154
Cont rol panel . . .. . . . . . . .. . . . .. 155
Explanation . . . .. . . . . . . .. . . . .. 426
Ma lfunction . . . . ..... . . ..... .. 309
Notes on operation . . . . . .. . . . .. 156
Re ar air vents . . . ..... . . . ..162 ,173
Rear-compartment air
co nditioning . . . . ..... . . ..... .. 162
Swit ching on /off . . . . . . . .. . . . .. 157
Thermotronic . . . ..... . . . ..... .. 164
Cont rol panel . . .. . . . . . . .. . . . .. 165
Explanation . . . .. . . . . . . .. . . . .. 426
Ma lfunction . . . . ..... . . ..... .. 309
Notes on operation . . . . . .. . . . .. 166
Rear-compartment air
co nditioning . . . . ..... . . ..... .. 173
Swit ching on /off . . . . . . . .. . . . .. 167 Third brake lamp
.. . . . . .... . . . . .357
Throu gh-load ing fea ture ... . . . . . .223
Tightening torque . . . . ..... . . . . .373
Time Selecting the display
(operating system) . . . . . . . . . . . . .122
TIREFIT kit Expl anation . .... . . . . .... . . . . .427
Storage location .. . . . . .... . . . . .276
Using .. . . . . .... . . . . .... . . . . .364
Tool ..... . . . . .... . . . . .... . . . . .276
Tow-away protection . .... . . . . . ..73
Towing .. . . . . .... . . . . .... . . . . .381
Towing eye . . .... . . . . . .... . . . . .276
Fitting .. . . . . .... . . . . .... . . . . .381
Tow-s tarting . .... . . . . . .... . . . . .384
Trailer 7-pin connector . . . . . . . . . . . . . . .264
Trailer loads . .... . . . . . .... . . . . .407
Trai ler tow hitch .. . . . . .... . . . . .260
Car e. .. . . . . .... . . . . .... . . . . .271
Fitting theba llco upling .... . . . . .260
Installat ion dime nsions .... . . . . .405
Rem oving theba llco upling . . . . . .263
Trailer towing .... . . . . .... . . . . .260
Automatic transmission .... . . . . .142
Driving tips. .... . . . . . .... . . . . .262
Ma xim um speed .. . . . . .... . . . . .263 209en_d2.boo Seite
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