2003 MERCEDES-BENZ CLK320 CABRIOLET technical data

5 ContentsHard plastic trim items .............305
Plastic and rubber parts ............305
Wind screen ...............................305
Rubber weatherstrip .................305
Soft top .........................................306
Technical dataSpare parts service ....................... 308
Warranty coverage ........................ 308
Identification labels ...................... 309
Layout of poly-V-belt drive ............ 310
Technical data ................................. 311
Fuels, coolants, lubricants etc. –
capacities .................................... 316
Engine oils ....................................... 318
Engine oil additives ....................... 318
Air conditioner refrigerant ........... 318
Brake fluid ....................................... 318
Premium unleaded gasoline ......... 319
Fuel requirements ......................... 319
Gasoline additives ......................... 320
Coolants .......................................... 320
Consumer information ................. 322
IndexIndex ................................................324

12 Introduction
Where to find it
The Operator’s Manual is divided into eight sections:
• Instruments and controls: An overview of all the controls that can be operated from the driver’s seat.
•Operation: Information on the vehicle’s equipment and its operation.
•Driving: Important information on driving.
• Instrument cluster display: Displays and indicator lamps on the instrument cluster with brief instructions.
•Practical hints: Assistance and instructions in the event of an emergency.
•Car care: Instructions on caring for your vehicle.
•Technical data: All the important technical data for your vehicle as well as consumer information such as fuels,
coolants, lubricants etc. is contained here.
•Index: Key terms to help you find a topic quickly.
Other documents may also be supplied, depending on your vehicle’s equipment.
Explanation of color used:
Warning notices for the protection of yourself and
others appear on red background.

123 Audio system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Audio and telephone, operation
These instructions are intended to help you become
acquainted with your Mercedes-Benz vehicle radio.
They contain useful tips and a detailed description of
the user functions.
The right to correct errors and make technical amendments is
reserved.
Operating safety1Optional equipment
Wa r n i n g !
In order to avoid distraction which could lead to an
accident, system settings should be entered with
the vehicle at standstill and systems should be
operated by the driver only when traffic conditions
permit. Always pay full attention to traffic
conditions first before operating system controls
while driving.Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is covering
a distance of approximately 50 feet (approximately
14 m ) e v e r y s e c o n d .
Wa r n i n g !
Any alterations made to electronic components can
cause malfunctions.The radio, cassette deck, CD changer
1, telephone
1
and voice control system
1 are interconnected.
When one of the components is not operational or
has not been removed/replaced properly, the
function of other components may be impaired.
This condition might seriously impair the
operating safety of your vehicle.We recommend that you have any service work on
electronic components carried out by an
authorized Mercedes-Benz Center.

258 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
Wheels
Replace rims or tires with the same designation,
manufacturer and type as shown on the original part.
See your authorized Mercedes-Benz Center for further
information.
See your authorized Mercedes-Benz Center for
information on tested and recommended rims and tires
for summer and winter operation. They can also offer
advice concerning tire service and purchase.
Tire replacement
Front tires should be replaced in sets. Rims and tires
must be of the correct size and type. For dimensions,
see “Technical Data” (page 312).
We recommend that you break in new tires for approx.
60 miles (100 km) at moderate speed.It is imperative that the wheel mounting bolts be
fastened to a tightening torque of 80 ft.lb. (110 Nm)
whenever wheels are mounted.
For rim and tire specifications, refer to “Technical Data”
( p a g e 312 ) .
Wa r n i n g !
Worn, old tires can cause accidents. If the tire tread
is badly worn, or if the tires have sustained
damage, replace them.When replacing rims, use only genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can result in
the bolts loosening and possibly an accident.

261 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index CLK 320 (with Sport Package)
(Steel spare wheel rim)
Important!
The spare wheel rim size is 7 J x 16 H 2.
The dimensions of the spare wheels are different from
those of the road wheels. The spare wheel should only
be used temporarily and replaced with a regular road
wheel as quickly as possible.
The spare wheel rim is mounted with a tire of size
205/55 R 16 91 H.
In the case of a flat tire, you may temporarily use the
spare wheel only when observing the following
restrictions:
•Do not exceed vehicle speed of 50 mph (80 km/h).
•Drive to the nearest tire repair facility to have the
flat tire repaired or replaced as appropriate.
•Do not operate vehicle with more than one spare
wheel mounted.If the arrow on tire side wall does not point in direction
of vehicle forward movement when using the spare
wheel, observe the following restrictions:
•Drive to the nearest tire repair facility as soon as
possible.
•Do not exceed vehicle speed of 50 mph (80 km/h).
Unidirectional tires must always be mounted with arrow
on tire sidewall pointing in direction of vehicle forward
movement.
For rim and tire specifications, refer to “Technical Data”.
Wa r n i n g !
CLK 320 (with Sport Package):
The dimensions of the spare wheel are different
from those of the road wheels. As a result, the
vehicle handling characteristics change when
driving with a spare wheel mounted.The spare wheel should only be used temporarily,
and replaced with a regular road wheel as quick as
possible.
Do not exceed vehicle speed of 50 mph (80 km/h).

262 Tires, Wheels
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index
CLK 430
Important!
The spare wheel rim size is 7
1/2J x 17 H 2.
The spare wheel rim is for temporary use only. However,
that spare wheel rim is weight optimized and has a
limited service life of 12 000 miles (20 000 km) use
before a standard wheel rim must replace it.
If the arrow on tire side wall does not point in direction
of vehicle forward movement when using the spare
wheel, observe the following restriction:
•Drive to the nearest tire repair facility as soon as
possible.
•Do not exceed vehicle speed of 50 mph (80 km/h).
Unidirectional tires must always be mounted with arrow
on tire sidewall pointing in direction of vehicle forward
movement.For rim and tire specifications, refer to “Technical Data”
( p a g e 312 ) .
Wa r n i n g !
The spare wheel rim is for temporary use only. Use
for over a total of 12 000 miles (20 000 km)
(aggregate of all uses) may cause wheel rim failure
leading to an accident and possible injuries.The dimensions of the spare wheel are different
from those of the road wheels for the rear axle. As a
result, the vehicle handling characteristics change
when driving with a spare wheel mounted on the
rear axle.The spare wheel should only be used temporarily,
and replaced with a regular road wheel as quick as
possible.
Do not exceed vehicle speed of 50 mph (80 km/h).

307
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Technical dataSpare parts service ........................308
Warranty coverage .........................308
Identification labels .......................309
Layout of poly-V-belt drive ............ 310
Technical data ................................ 311
Fuels, coolants, lubricants etc. –
capacities ................................... 316
Engine oils ...................................... 318Engine oil additives ....................... 318
Air conditioner refrigerant ........... 318
Brake fluid ....................................... 318
Premium unleaded gasoline ......... 319
Fuel requirements ......................... 319
Gasoline additives ......................... 320
Coolants .......................................... 320
Consumer information ................. 322

308 Technical data
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Spare parts service
All authorized Mercedes-Benz Centers maintain a stock
of original spare parts required for maintenance and
repair work. In addition, strategically located parts
distribution centers provide quick and reliable parts
service.
More than 300 000 different spare parts, for
Mercedes-Benz models, are available.
Mercedes-Benz original spare parts are subjected to
stringent quality inspections. Each part has been
specifically developed, manufactured or selected for and
adapted to Mercedes-Benz vehicles.
Therefore, Mercedes-Benz original spare parts should
be installed.
Important!
The use of non-genuine parts and accessories not
authorized by Mercedes-Benz could damage the vehicle
which damage is not covered by the Mercedes-Benz
Limited Warranty or compromise its durability or safety.Warranty coverage
Your vehicle is covered under the terms of the
“warranties” printed in the Service and Warranty
Information booklet and your authorized
Mercedes-Benz Center will exchange or repair any
defective parts originally installed on the vehicle in
accordance with the terms of the following warranties:
1. New vehicle limited warranty
2. Emission system warranty
3. Emission performance warranty
4. California, Maine, Massachusetts, and Vermont
emission control systems warranty
Replacement parts and accessories are covered by the
Mercedes-Benz Spare Parts and Accessories warranties,
copies of which are available at any Mercedes-Benz
Center.
Loss of Service and Warranty Information Booklet
Should you lose your Service and Warranty Information
booklet, have your authorized Mercedes-Benz Center
arrange for a replacement. It will be mailed to you.