ECU MERCEDES-BENZ CLK320 COUPE 2004 C209 Workshop Manual

363 Practical hints
Battery
Battery
The battery is located on the right side of
the engine compartment.
Removal of filter box:
Release the three clamps1.

Remove filter box.
Installation of filter box:

Insert filter box properly.

Secure it with the three clamps1.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries,
see “Battery” (
page 288).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Service Booklet for mainte-
nance intervals or contact your autho-
rized Mercedes-Benz Center for further
information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.

364 Practical hintsBatteryDisconnecting the battery
1Negative terminal
2Positive terminal cover

Depress parking brake firmly or move
gear selector lever to positionP.

Turn off all electrical consumers.

Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start / stop button until
the engine shuts off.

Open the driver’s door.

Open the hood (
page 281).

Remove the filter box.

Disconnect the battery negative lead.

Remove cover2 from the positive ter-
minal.

Disconnect the battery positive lead.
Removing the battery
Remove the screw securing the bat-
tery.

Remove the battery support and brack-
et.

Take out the battery.
Charging and reinstalling battery
Charge battery in accordance with the
instructions of the battery charger
manufacturer.

Reinstall the charged battery. Follow
the previously described steps in re-
verse order.
Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect


the gear selector lever will remain
locked in positionP
Warning!
G
Never charge a battery while still installed in
the vehicle. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.

365 Practical hints
Battery
Reconnecting the battery
Turn off all electrical consumers.

Connect the positive lead and fasten its
cover 2.

Connect the negative lead 1.

Reinstall the filter box (
page 363).Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12-volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
!Never invert the terminal connections.!The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnect-
ing):

Set the clock (
page 144) (vehi-
cles with COMAND*: see COMAND
operator’s manual).


Resynchronize side windows
(page 213).


Resynchronize sliding/pop-up
roof* (
page 217).

373 Practical hintsFuses
Fuse box in engine compartment
The fuse box is located in the engine com-
partment on the left-hand side.
2Cover
3Screw
4RetainerRemoving/installing cover

Twist screws3 90° counterclock-
wise.

Pull up cover2.

Slide out retainer4 and remove cover
by pulling towards front.

Install cover2 in reverse order.Opening fuse box
5Fuse box cover
6Clamps

Release clamps6.

Remove cover5.
Closing fuse box

Ensure that the sealing rubber is prop-
erly positioned.

Press the cover down and secure with
clamps6.

417 Index
Fuel reserve 311
Instrument cluster 306–312
PASS. AIRBAG OFF 63, 313
Seat belts 311
Service indicator 296
SRS 59, 312
Turn signals 23
Language
Multifunction display 143
Setting 143
LATCH child seat anchors 73
Folding back 73
Layout of poly-V-belt drive 379
Leather upholstery
Cleaning 304
Lever
For cruise control 225
License plate lamps
Messages in display 330
Replacing bulbs 351, 356
Light alloy wheels
Cleaning 303
Technical data 382Light sensor 330
Lighter see Cigarette lighter
Lighting 119
Automatic headlamp mode 120
Combination switch 123
Daytime running lamp mode 121
Door entry lamps 125
Exterior lamp switch 119
Front fog lamps 122
High beam flasher 123
High beams 123
Instrument cluster illumination 126
Interior 124
Locator lighting 121
Low beam 119
Manual headlamp mode 120
Night security illumination 121
Parking lamps 119
Rear fog lamp 122
Settings (control system) 145Limiting the gear range 159
Limp Home Mode 165
Line of fall 399
Loading 237
Cargo tie-down rings 243
Instructions 242
Roof rack 237
Ski sack* 237
Split rear bench seat 240
Locator lighting 121
Setting 146
Lock buttons 399
Door handle (KEYLESS-GO*) 55
Locking 51, 86
Fuel filler flap 278
Global with KEYLESS-GO* 92
Global, SmartKey 87
The vehicle with KEYLESS-GO* 93
Trunk lid, separately 104
Vehicle in an emergency 344

420 Index
License plate lamp 330
Low beam 330
Parking brake 321
SmartKey with KEYLESS-GO* 328
Steering gear oil level 335
Sunroof* 336
Symbol messages 320–336
Tele Aid 334
Telephone* 336
Text messages 315–319
Trunk 336
Washer fluid 336
Multifunction
steering wheel 24, 130, 400
Buttons 130N
Navigation system
Operating 137
See separate COMAND*
operating instructions
Night security illumination 121
Nubuck leather upholstery (CLK 55 AMG)
Cleaning 304O
Occupant safety 58
Airbags 59
Children and airbags 60
Children in the vehicle 68
Fastening the seat belts 40
Infant and child restraint systems 68
LATCH child seat anchors 73
Seat belts 40, 62
Odometer, main 23
Oil
Adding 285
Checking level 283
Consumption 283
Filler cap 285
Filler neck 285
Viscosity 399
Oil level
Checking 280
One-touch gearshifting 158
Canceling gear range limit 158
Downshifting 158
Upshifting 158

425 Index
Seat heating* 114, 115
Rapid seat heating switching on/off
with seat ventilation* 115
Rapid seat heating switching on/off
without seat ventilation* 114
Switching on/off
with seat ventilation* 115
Switching on/off
without seat ventilation* 114
Seat ventilation* 113
Switching off 113
Switching on 113
Seats 107
Adjusting 34
Easy entry/exit feature 107
Heating* 114
Multicontour seat* 112
Rapid seat heating*
with seat ventilation* 115
Rapid seat heating*
without seat ventilation* 114
Seat heating* 114
Seat heating*
with seat ventilation* 115
Seat ventilation* 113
Split rear bench seat 240Securing cargo
Cargo tie-down rings 243
Selecting
Display 143
Selecting display 144
Self-test
BabySmart
TM
airbag deactivation system 71
Tele Aid 252
Service
Calling up the service indicator 297
Major service (Service B) 296
Minor service (Service A) 296
Overdue 296
Spare parts 376
Types 296
When due 296
Service (maintenance) 296
Service and Warranty Booklet
Loss of 377
Service and warranty information 10
Service indicator 296
Calling up 297
Clearing 296, 297
Service life (tires) 291
Service System see FSSSetting
Convenience functions 141, 149
Cruise control 219
Daytime running
lamp mode 145, 146
Distronic* time interval 228
Following distance in Distronic* 228
Higher speed in cruise control 220
Higher speed in Distronic* 226
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 220
Lower speed in Distronic* 227
Miles/kilometers in
speedometer 142
Minutes (clock) 145
Parking position for
exterior rear view mirrors 151
Slower speed in cruise control 220