2007 MERCEDES-BENZ CLK550 brake

456 Practical hints
Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and sys-
tems secured by that fuse will stop operat-
ing.If a newly inserted fuse blows again, have
the cause determined and rectified by an
authorized Mercedes-Benz Center.
The following aids are available to help you
replace fuses.

Fuse chart
The fuse chart is located in the main
fuse box in the passenger compart-
ment (
page 457). The fuse chart ex-
plains the fuse allocation and fuse
amperages.

Spare fuses
Spare fuses are located in the vehicle
tool kit in the spare wheel well
(
page 404).

Fuse extractor
The fuse extractor is located in the
trunk underneath the trunk floor cover
(
page 405), or
CLK 63 AMG (
page 404).The electrical fuses are located in different
fuse boxes:

in the passenger compartment on the
driver’s side (
page 457)

on the driver’s side of the engine com-
partment (
page 457)

in the trunk (page 458)
Before replacing fuses:
Apply the parking brake (page 59).
Make sure the gear selector lever is set
to position P (
page 172).
Turn off all electrical consumers.
Turn off the engine (page 60).
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Open the driver’s door.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than ap-
proved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied by an
authorized Mercedes-Benz Center
iA blown fuse must be replaced by an appro-
priate spare fuse (recognizable by its color or the
fuse rating given on the fuse) of the amperage
recommended in the fuse chart.
Any Mercedes-Benz Center will be glad to advise
you on this subject.

473 Technical data
Fuels, coolants, lubricants, etc.
ModelCapacityFuels, coolants, lubricants, etc.
Power steeringCLK 350
CLK 550
CLK 63 AMGapprox. 1.1 US qt (1.0 l)
approx. 1.1 US qt (1.0 l)
approx. 1.3 US qt (1.2 l)MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubsCLK 350
CLK 550
CLK 63 AMGapprox. 3.0 oz (85 g) each
approx. 3.0 oz (85 g) each
approx. 2.5 oz (70 g) eachHigh temperature roller bearing grease
Brake system0.64 US qt (0.6 l)MB Brake Fluid (DOT 4+)
Cooling systemCLK 350
CLK 550
CLK 63 AMGapprox. 7.8 US qt (7.4 l)
approx. 9.7 US qt (9.2 l)
approx. 11.5 US qt (10.9 l)MB 325.0 Anticorrosion/Antifreeze
Agent
Fuel tank
including a reserve of
CLK 350
CLK 550
CLK 63 AMG
16.35 US gal (62.0 l)
2.11 US gal (8.0 l)
2.11 US gal (8.0 l)
3.17 US gal (12.0 l)Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg. of 96 RON / 86 MON)
Air conditioning systemR-134a refrigerant and special PAG lu-
bricant oil (never R-12)
Windshield washer and
headlamp cleaning system*6.4 US qt (6.0 l)MB Windshield Washer Concentrate1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing point or MB Windshield Washer Concentrate “MB SummerFit”
and commercially available premixed windshield washer solvent / antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 479).

475 Technical data
Fuels, coolants, lubricants, etc.
Brake fluid
During vehicle operation, the boiling point
of the brake fluid is continuously reduced
through the absorption of moisture from
the atmosphere.
Only brake fluid approved by
Mercedes-Benz is recommended. An
authorized Mercedes-Benz Center will
provide you with additional information.Premium unleaded gasoline
Warning!G
Under extremely strenuous operating condi-
tions, this moisture content can lead to the
formation of bubbles in the system, thus re-
ducing the system’s efficiency.
Therefore, the brake fluid must be replaced
regularly. Refer to your vehicle's Mainte-
nance Booklet for replacement interval.
Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious per-
sonal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with fuels and the inha-
lation of fuel vapors can be damaging to
your health.
!To maintain the engine’s durability and per-
formance, premium unleaded gasoline must be
used. If premium unleaded is not available and
low octane fuel is used, follow these precau-
tions:

Have the fuel tank only partially filled with
unleaded regular and fill up with premium
unleaded as soon as possible.

Avoid full throttle driving and abrupt acceler-
ation.

Do not exceed an engine speed of 3 000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed 2/3 of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.

481 Index
A
ABS 27, 88
Malfunction indicator lamp 366
Messages in display 380
Accelerator position,
automatic transmission 174
Accessory weight 347
Accident 57
Active head restraints 80
Resetting 424
Air bags 65
Children 82
Front passenger front
air bag off indicator lamp 74
Front, Driver 69
Front, Passenger 69
Head-thorax 70
Occupant Classification System
(OCS) 71
Rear side-impact* 70
Safety guidelines 67
Air conditioning refrigerant 474
Air conditioning system see
Climate control system
Air conditioning, Cooling 196, 208
Air distribution 192, 203Air pressure see
Tires, Inflation pressure
Air recirculation mode 194, 205
Air vents 197, 210
Air volume 192, 204
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 404, 443
AMG menu (CLK 63 AMG only) 145
Lap analysis 149
Overall analysis 148
RACETIMER 149
Vehicle supply voltage 146
Anticorrosion/antifreeze 477, 478
Antiglare, Rear view mirror 184, 185
Antilock Brake System see ABS
Anti-theft alarm
system indicator lamp 29
Anti-theft systems 95
Anti-theft alarm system 95
Immobilizer 95
Aquaplaning see Hydroplaning
Armrest 278, 279
Ashtrays 280
Aspect ratio 347
ATF 319AUDIO menu 149
CD player (CD, MP3-CD) 150
Radio station 149
Radio station (satellite*) 150
Search function 163
Audio system 211
Button and soft key operation 214
CD changer* 230
CD operation 227
Emergency calls "911" 247
MP3 228
Operating and display elements 212
Operating audio system 211
Operating safety 211
Radio operation 218
Sound system* 211, 215
Switching on/off 214
Telephone* operation 211, 234
Auto-dimming, Rear view mirror 185
Automatic central locking,
Control system 117, 164
Automatic climate control see
Climate control system
Automatic headlamp mode see Headlamps
Automatic lighting control,
Interior lighting 134

482 Index
Automatic locking when driving 117
Automatic shift program 176
Automatic transmission
Accelerator position 174
Automatic shift program 176
Emergency operation
(limp-home mode) 183
Gear ranges 175
Gear selector lever 50, 170
Gear selector lever control
one-touch gearshifting 177
Gear selector lever positions 172
Gear shifting malfunctions 183
Kickdown 174
Kickdown, manual shift program 183
Manual shift program
CLK 63 AMG 181
Program mode selector switch 176
Shifting procedure 171
Starting engine 50
Steering wheel gearshift control
one-touch gearshifting* 179
Transmission fluid level 319
Automatic Transmission Fluid see ATFB
Backrest
Seat, Multicontour* 121
Seat, Power 40
Backup lamps
Messages in display 399
Replacing bulbs 427, 428
Bar 347
BAS 90
Batteries, SmartKey
Changing 426
Checking battery condition 107
Batteries, SmartKey with KEYLESS-GO*
Checking battery condition 107
Battery, Vehicle 321, 447
Charging 449
Connecting 449
Disconnecting 448
Installing 449
Jump starting 450
Messages in display 388
Removing 448
Bead 347
Beverage holder see Cup holder
Block heater (Canada only) 352
Bolts, Spare wheel 409Brake fluid 475
Checking 314
Messages in display 389
Brake lamp
Cleaning lenses 361
High mounted 428
Replacing bulbs 428
Brake pads
Messages in display 389
Brakes 302
High-performance brake system
(CLK 63 AMG only) 303
Warning lamp 368
Break-in period 300
Bulbs, replacing see Replacing bulbs

486 Index
Emergency tensioning device see ETD
Emergency, In case of
Battery,Jump starting 290, 450
First aid kit 404
Flat tire, Changing 436
Fuses 456
Hazard warning flasher 133
Roadside Assistance 12
Towing the vehicle 452
Emission control 310
Emission control information label 463
Emission control vacuum line
routing diagram label 463
Emission system warranties 10
Engine
Belt layout 464
Block heater (Canada only) 352
Break-in recommendations 300
Cleaning 358
Compartment 315
Malfunction
indicator lamp 27, 369, 370
Maximum engine speed 465
Messages in display 390
Number 463Starting 50
Starting difficulties 52
Starting with KEYLESS-GO* 51
Starting with SmartKey 51
Technical data 465
Turning off 60
Turning off with KEYLESS-GO* 60
Turning off with SmartKey 60
Engine coolant see Coolant
Engine oil 317, 474
Adding 319, 474
Additives 474
Changing 319, 474
Checking level (Dipstick) 317
Consumption 317
Filler cap 319
Filler neck 319
Engine oil level 314
ESP
®27, 90
Messages in display 380–381
Warning lamp 372
ETD 79
Safety guidelines 67
Exterior rear view mirrors 45, 184
Exterior view 22F
Filler cap, Engine oil 319
Filler neck, Engine oil 319
First aid kit 404
Flat tire 436
Jacking up the vehicle 441
Lowering the vehicle 445
Minispare wheel 407
Mounting the spare wheel 441
Preparing the vehicle 436
TIREFIT (CLK 63 AMG only) 404
TIREFIT kit* 436
Flexible Service System see
FSS (Canada vehicles)
Floormats* 283
Fluids
Brake fluid 314, 475
Engine coolant 320, 477
Engine oil 317, 474
Transmission fluid 319
Windshield washer and headlamp
cleaning* system 322, 479
Fog lamps 130, 428
Messages in display 397
Replacing bulbs 428
Front air bags 69

487 Index
Front lamps see Headlamps
Front passenger front air bag 65, 69
Messages in display 382–385
Front passenger front
air bag off indicator lamp 29, 74, 376
FSS (Canada vehicles) 353
Fuel 313, 472
Additives 476
Automatic transmission fluid 472
Brake fluid 473
Capacities 472
Capacities, Fuel tank 473
Engine coolant 473
Engine oil 472
Filling the tank 312
Fuel display 27
Fuel filler flap and cap 312
Fuel filler flap and cap, Multifunction
display messages 393
Fuel reserve warning lamp 373
Power steering fluid 473
Premium unleaded
gasoline 313, 473, 475
Requirements, Octane rating 476
Technical data 472Fuel cap
Message in display 370
Fuel consumption statistics
From start 165
Resetting 166
Since last reset 166
Fuel filler flap 312
Locking/unlocking 312
Opening 312
Fuel reserve warning lamp 27
Fuel tank
Capacity 473
Filler flap 312
Message in display 395
Fuel, Premium unleaded
gasoline 313, 475, 476
Fuels, coolants, lubricants etc.
Capacities 472
Fuses 456
Fuse box (main)
in passenger compartment 457
Fuse box
in engine compartment 457
Fuse box
in trunk 458
Replacing 456G
Garage door opener 31, 293
Gasoline see Fuel
GAWR 347
Gear range
Automatic transmission 175
Limiting 175
Shifting into optimal 178, 180
Gear selector lever 30, 50, 170
Cleaning 363
Gearshift pattern 170
Lock 51
Message in display 386
Position 171, 172
Position indicator 27, 139
Shifting procedure 171
Unlocking in an emergency 412
Gear selector lever one-touch gearshifting
Automatic transmission 177
Global locking/unlocking see
Key, SmartKey or KEYLESS-GO*
Glove box 25, 276
Gloves 404
Good visibility 184
Gross Axle Weight Rating see GAWR
Gross Vehicle Weight Rating see GVWR

488 Index
Gross Vehicle Weight see GVW
GVW 347
GVWR 348
H
Halogen headlamp see Headlamps
Hands-free microphone 31
Hard plastic trim items, cleaning 363
Hazard warning flasher 133
Head restraints 40, 119
Active head restraints 80
Front seat 119
Power seat, Adjusting 40
Rear seat 119
Rear seat, Lowering 120
Rear seat, Raising 120
Headlamp cleaning
system* 184, 322, 479
Headlamp delayed shut-off see
Delayed shut-off, Exterior lamps
Headlamps
Automatic headlamp mode 127
Bi-Xenon* 431
Cleaning lenses 361
Daytime running lamp mode 128
Halogen 430High beam see High beam flasher
High beam see High beam headlamps
Light sensor 396
Locator lighting 129
Low beam see Low beam headlamps
Manual headlamp mode 127
Messages in display 397–400
Night security illumination 129
Replacing bulbs 430, 432
Switch 54, 126
Headliner and shelf below rear window,
Cleaning and care of 363
Head-thorax air bag 70
Heated seats* 122
High beam flasher 54, 131
Replacing bulbs
(Bi-Xenon*) 428, 431
Replacing bulbs
(Halogen) 428, 430High beam headlamps 54, 131
Indicator lamp 27
Messages in display 397
Replacing bulbs
(Bi-Xenon*) 428, 429
Replacing bulbs
(Halogen) 428, 430
Replacing bulbs for high beam flasher
(Bi-Xenon*) 431
Switching on 54, 131
High mounted brake lamp 428
Hood 315
Horn 25
HVAC see Climate control system
Hydroplaning 306