2004 MERCEDES-BENZ CLK320 CABRIOLET maintenance

294 OperationEngine compartmentBattery
Your vehicle’s battery is located on the
right side of the engine compartment.
The battery should always be sufficiently
charged in order to achieve its rated ser-
vice life. Refer to Service Booklet for bat-
tery maintenance intervals.
If you use your vehicle mostly for
short-distance trips, you will need to have
the battery charge checked more frequent-
ly.
When replacing the battery, always use
batteries approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
G
Observe all safety instructions
and precautions when handling
automotive batteries.
A
Risk of explosion
D
Keep flames or sparks away
from battery. Do not smoke.
B
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
In case it does, immediately
flush affected area with clear
water and seek medical help if
necessary.
E
Wear eye protection.
C
Keep children away.
F
Follow the instructions in this
Operator's Manual.

302 OperationMaintenance
MaintenanceWe strongly recommend that you have
your vehicle serviced by your authorized
Mercedes-Benz Center, in accordance with
the Service Booklet at the times called for
by the FSS (Flexible Service System).
Failure to have the vehicle maintained in
accordance with the Service Booklet at the
designated times /mileage called for by
the FSS may result in vehicle damage not
covered by the Mercedes-Benz Limited
Warranty.
FSS will notify you when your next service
is due.
Approximately one month before your next
service is due, one of the following mes-
sages will appear in the multifunction dis-
play while you are driving or when you
switch on the ignition (example service A):Service A in XXXXX miles (km)
Service A in XXX days
Service A in X day
Service A due now!
The type of service due is indicated in the
multifunction display:9
Minor service (A)
´
Major service (B)
Clearing the service indicator
The service indicator is automatically
cleared after 30 seconds. You can also
clear it yourself.
Press the reset button on the instru-
ment cluster (
page 126).
Service term exceeded
If you have exceeded the suggested ser-
vice term, you will see the following mes-
sage in the multifunction display:Service A exceeded by XXXXX miles
(km)
Service A exceeded by XXX days
Service A exceeded by X dayThe Mercedes-Benz Center will reset the
service indicator following a completed
service.
iThe interval between services depends
on your driving habits. A gentle driving
style, moderate engine speeds and the
avoidance of short-distance trips will
lengthen the interval between services.

303 Operation
Maintenance
Calling up the service indicator
Switch on ignition.
The standard display of the control sys-
tem appears (
page 129).

Press button k or j on the mul-
tifunction steering wheel until FSS indi-
cator with the service symbol 9 or
´ and the service deadline appears
in the multifunction display.
Resetting the service indicator
In the event that the service on your vehi-
cle is not carried out by an authorized
Mercedes-Benz Center, you can reset the
service indicator yourself.
Switch on ignition.
The standard display of the control sys-
tem appears (
page 129).

Press button k or j on the mul-
tifunction steering wheel until the FSS
indicator with the service symbol 9
or ´ and the service deadline ap-
pears in the multifunction display.

Press reset button to the left in the in-
strument cluster for about three sec-
onds.
This message appears in the multifunc-
tion display:Service interval...
To reset:
Press reset button
for 3 seconds

To confirm, press reset button until you
hear a signal.
The service indicator now displays the
reset interval.
iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the service indica-
tor. To arrive at the true service dead-
line, you will need to subtract these
days from the days shown in the ser-
vice indicator.
Do not confuse the service indicator
with the engine oil level indicator :.
iIf the service indicator was inadvertent-
ly reset, have a Mercedes-Benz Center
correct it.
Only reset if the proper service has
been performed. Resetting the system
without performing proper service as
called for by the FSS will cause the FSS
to incorrectly determine the next ser-
vice interval which will result in engine
damage not covered by the
Mercedes-Benz Limited Warranty.

382 Practical hintsFlat tire2Jack
3Take-up bracket
Place jack 2 on firm ground.

Position jack2 under take-up
bracket3 so that it is always vertical
(plumb-line) as seen from the side,
even if the vehicle is parked on an in-
cline.

Jack up the vehicle until the wheel is a
maximum of 1.2 in (3 cm) from the
ground. Never start engine while vehi-
cle is raised.Removing the wheel
1Alignment bolt

Unscrew upper-most wheel bolt and re-
move.

Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.

Remove the remaining bolts.

Remove the wheel.
Warning!
G
The jack is intended only for lifting the vehi-
cle briefly for wheel changes. It is not suited
for performing maintenance work under the
vehicle.

Never start the engine when the vehicle
is raised.


Never lie down under the raised vehicle.
!Do not place wheel bolts in sand or dirt.
This could result in damage to the bolt
and wheel hub threads.

421 Technical terms
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
Engine oil viscosity
Measurement for the inner friction (vis-
cosity) of the oil at different tempera-
tures. The higher the temperature an
oil can tolerate without becoming thin,
or the lower the temperature it can tol-
erate without becoming viscous, the
better the viscosity.
ESP
(E
lectronic S
tability Pr
ogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRSFSS
(F
lexible S
ervice S
ystem)
Service indicator in the multifunction
display that informs the driver when
the next vehicle maintenance service is
due.
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the gear selector le-
ver.
GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs CD digital maps for
navigation.Head-thorax airbag
Installed in the driver and the front pas-
senger seat, these airbags protect oc-
cupants during side impact collisions
exceeding a preset threshold. Unlike
normal side airbags, head-thorax air-
bags are also designed to provide pro-
tection for the head area.
Instrument cluster
The displays and indicator/warning
lamps in the driver’s field of vision, in-
cluding the tachometer, speedometer,
engine temperature and fuel gauge.
KEYLESS-GO*
System for entering and operating the
vehicle without the use of a SmartKey.
Kickdown
Depressing the accelerator past the
point of resistance shifts the transmis-
sion down to the lowest possible gear.
This very quickly accelerates the vehi-
cle and should not be used for normal
acceleration needs.

441 Index
Low beam headlamps
Messages in display 336
Replacing bulbs (Bi-Xenon*) 373
Replacing bulbs (Halogen) 373, 375
Lowering
Roll bar manually 354
Vehicle 384
Lubricants
Technical data 410
Luggage cover 216
Folding back 216, 245
Latch 216M
Main dimensions 408
Maintenance 12, 302
Malfunction
Displaying 138
Malfunction memory 138
Calling up 138
Manual gear shifting
Transmission program
mode M (Manual) 164
Manual headlamp mode 120
Manual operations
Fuel filler flap 352
Interior lighting control 125
Locking the vehicle 349
Roll bar 353
Soft top 355
Soft top with
add. locking mechanism 364
Soft top without
add. locking mechanism 357
Unlocking gear selector lever 352
Unlocking the driver’s door 348Manual shift program mode (CLK 55 AMG)
Downshifting 165
Upshifting 165
Manual shift programm CLK 55 AMG
Activating 164
Deactivating 165
Manual shift programm mode
CLK 55 AMG 164
MAXCOOL maximum cooling 177
Mechanical key 348
Memory function 116, 422
Recalling positions
from memory 117
Storing exterior rear view
mirror parking positions 118
Storing key-dependent settings 117

448 IndexSeat heating* 114
Switching on/off rapid heating
with seat ventilation* 115
Switching on/off rapid heating
without seat ventilation* 114
Switching on/off seat heating
with seat ventilation* 115
Switching on/off seat heating
without seat ventilation* 114
with seat ventilation* 115
without seat ventilation* 114
Seat ventilation* 113
Switching off 113
Switching on 113
Seats 109
Adjusting 34
Easy entry/exit feature 109
Multicontour seat* 112
Seat heating* 114
Seat ventilation* 113
Selecting
Display 143
Selecting display 144Selector lever
Lock 44
Message in display 325
Self-test
BabySmart
TM
airbag deactivation system 72
Tele Aid* 258
Service
Calling up the service indicator 303
Major service (Service B) 302
Minor service (Service A) 302
Overdue 302
Spare parts 398
Types 302
When due 302
Service (maintenance) 302
Service and Warranty Booklet
Loss of 399
Service and warranty information 10
Service indicator 302
Calling up 303
Clearing 302, 303
Service life (tires) 297
Service System see FSSSetting
Convenience functions 141, 149
Cruise control 227
Daytime running
lamp mode 145, 146
Distronic* time interval 236
Following distance in Distronic* 236
Higher speed in cruise control 228
Higher speed in Distronic* 234
Hours (clock) 144
Individual vehicle settings 139
Interior lighting
delayed switch-off 148
Key-dependent memory 151
Lamps and lighting
(control system) 145
Language, multifunction display 143
Locator lighting 146
Lower speed in cruise control 228
Lower speed in Distronic* 235
Miles/kilometers
in speedometer 142
Minutes (clock) 145
Parking position for exterior
rear view mirrors 151