2007 MERCEDES-BENZ CLK350 COUPE automatic transmission

254 Controls in detail
Driving systems
1Set current or higher speed
2Set current or lower speed
3Cancel cruise control
4Resume to last set speed
Setting current speed
Accelerate or decelerate to the desired
speed.
Briefly lift1 or depress2 the cruise
control lever.
The current speed is set.
Remove your foot from the accelerator
pedal.
Cruise control is activated.The selected speed appears in the multi-
function display for approximately five sec-
onds, and the corresponding speedometer
segments from the selected speed to the
vehicle maximum speed are illuminated.
Warning!G
Cruise control brakes automatically so that
the set speed is not exceeded. The brake
pedal depresses when the cruise control en-
gages the brakes.
Keep driver’s foot area clear at all times, in-
cluding the area under the brake pedal. Ob-
jects stored in this area may impair pedal
movement which could interfere with the
braking ability of the cruise control system.
Do not place your foot under the brake pedal
- your foot could become caught.
Keep in mind that cruise control is a conve-
nience system designed to assist the driver
during vehicle operation. The driver is and
must always remain responsible for the ve-
hicle’s speed and for safe brake operation.
iOn uphill or downhill grades, cruise control
may not be able to maintain the set speed. Once
the grade eases, the set speed will be resumed.
On downhill grades, the cruise control will hold
the set speed with braking from the vehicle’s
brake system.
In addition, on longer downhill grades the auto-
matic transmission will automatically downshift.

309 Operation
Engine compartment
For more information on engine oil, see
“Fuels, coolants, lubricants, etc.”
(
page 448).
For more information on messages in the
multifunction display concerning engine
oil, see the “Practical hints” section
(
page 384).
Adding engine oil
1Filler cap
Unscrew filler cap1 from filler neck.
Add engine oil as required.
Be careful not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.
Screw filler cap1 back on filler neck.
More information on engine oil can be
found in the “Technical data” section
(
page 448) and (page 450).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission.
!Only use approved engine oils and oil filters
required for vehicles with Maintenance System
(U.S. vehicles) or FSS (Canada vehicles). For a
listing of approved engine oils and oil filters,
refer to the Factory Approved Service Products
pamphlet in your vehicle literature portfolio, or
contact an authorized Mercedes-Benz Center.
Using engine oils and oil filters of specification
other than those expressly required for the
Maintenance System (U.S. vehicles) or FSS
(Canada vehicles), or changing of oil and oil filter
at change intervals longer than those called for
by the Maintenance System (U.S. vehicles) or
FSS (Canada vehicles) will result in engine or
emission control system damage not covered by
the Mercedes-Benz Limited Warranty.
!Excess oil must be siphoned or drained off.
It could cause damage to the engine and emis-
sion control system not covered by the
Mercedes-Benz Limited Warranty.

337 Operation
Tires and wheels
Tire and loading terminology
Accessory weight
The combined weight (in excess of those
standard items which may be replaced) of
automatic transmission, power steering,
power brakes, power windows, power
seats, radio, and heater, to the extent that
these items are available as
factory-installed equipment (whether
installed or not).
Air pressure
The amount of air inside the tire pressing
outward on each square inch of the tire.
Air pressure is expressed in pounds per
square inch (psi), or kilopascal (kPa) or
bars.
Aspect ratio
Dimensional relationship between tire
section height and section width
expressed in percentage.Bar
Another metric unit for air pressure. There
are 14.5038 pounds per square inch (psi)
to 1 bar; there are 100 kilopascals (kPa)
to 1 bar.
Bead
The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the
rim.
Cold tire inflation pressure
Tire inflation pressure when your vehicle
has been sitting for at least 3 hours or driv-
en no more than 1 mile (1.6 km).
Curb weight
The weight of a motor vehicle with stan-
dard equipment including the maximum
capacity of fuel, oil, and coolant, and, if so
equipped, air conditioning and additional
optional equipment, but without passen-
gers and cargo.DOT (Department of Transportation)
A tire branding symbol which denotes the
tire meets requirements of the
U.S. Department of Transportation.
GAWR (G
ross Axle Weight Rating)
The GAWR is the maximum permissible
axle weight. The gross vehicle weight on
each axle must never exceed the GAWR for
the front and rear axle indicated on the
certification label located on the driver’s
door B-pillar.
GVW (G
ross Vehicle Weight)
The GVW comprises the weight of the
vehicle including fuel, tools, spare wheel,
installed accessories, passengers and
cargo and, if applicable, trailer tongue
load. The GVW must never exceed the
GVWR indicated on the certification label
located on the driver’s door B-pillar.

356 Practical hints
What to do if …?
Lamps in instrument clusterGeneral information:
If any of the following lamps in the instru-
ment cluster fails to come on during thebulb self-check when switching on the igni-
tion, have the respective bulb checked and
replaced if necessary.
ProblemPossible cause/consequenceSuggested solution
-The yellow ABS indicator lamp
comes on while the engine is
running.The ABS has detected a malfunction and has
switched off. The BAS and the ESP® are also
switched off (see messages in the multifunc-
tion display).
The brake system is still functioning normally
but without the systems specified above.
If the ABS control unit is malfunctioning,
other systems such as the navigation
system* or the automatic transmission may
also be malfunctioning.
Continue driving with added caution.
Wheels will lock during hard braking,
reducing steering capability.
Read and observe messages in the
multifunction display (
page 370).
Have the system checked at an autho-
rized Mercedes-Benz Center as soon
as possible.
Failure to follow these instructions in-
creases the risk of an accident.
The charging voltage has fallen below
10 volts. The ABS has switched off.
The battery might not be charged sufficiently.Switch off electrical consumers that
are currently not needed, e.g. seat
heating*.
If necessary, have the generator and
battery checked.
When the voltage is above this value
again, the ABS is operational again.

428 Practical hints
Towing the vehicle
Warning!G
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the ve-
hicle. Adapt your driving accordingly.
iTo signal turns while being towed with the
hazard warning flasher in use, switch on the igni-
tion and activate the combination switch for the
left or right turn signal in the usual manner – only
the selected turn signal will operate.
Upon canceling the turn signal, the hazard warn-
ing flasher will operate again.
!When towing the vehicle with all wheels on
the ground, please note the following:
With the automatic central locking activated and
the SmartKey in starter switch position2, or
KEYLESS-GO* start/stop button in position2,
the vehicle doors lock if the left front wheel as
well as the right rear wheel are turning at vehicle
speeds of approx. 9 mph (15 km / h) or more.
To prevent the vehicle door locks from locking,
deactivate the automatic central locking
(
page 162).
Towing of the vehicle should only be done using
the properly installed towing eye bolt. Never at-
tach tow cable, tow rope or tow rod to the vehi-
cle chassis, frame or suspension parts.
iIf the battery is disconnected or discharged

the SmartKey will not turn in the starter
switch. For more information, see “Battery”
(
page 421) and “Jump starting”
(
page 425).

the gear selector lever will remain locked in
positionP. For information on manually un-
locking the transmission gear selector lever,
see (
page 401).

448 Technical data
Fuels, coolants, lubricants, etc.
Capacities
Vehicle components and their respective
lubricants must match. Therefore only use
products tested and approved by
Mercedes-Benz.
Please refer to the Factory Approved Ser-
vice Products pamphlet, or inquire at your
Mercedes-Benz Center.
Warning!G
Comply with all valid regulations with
respect to handling, storing, and disposing
of service fluids. Otherwise you could
endanger persons or the environment.
Keep service fluids out of the reach of
children.
For health reasons, you should prevent
service fluids from coming into direct
contact with your eyes or any open wounds.
If a service fluid is swallowed, contact a
physician immediately.
ModelCapacityFuels, coolants, lubricants, etc.
Engine with oil filterCLK 350
CLK 5508.5 US qt (8.0 l)
9.0 US qt (8.5 l)Approved engine oils
Automatic transmissionCLK 350
CLK 5509.0 US qt (8.5 l)
9.5 US qt (9.0 l)MB Automatic Transmission Fluid
Rear axleCLK 350
CLK 5501.16 US qt (1.1 l)
1.27 US qt (1.2 l)Hypoid gear oil SAE 85 W 90
Power steeringapprox. 1.1 US qt (1.0 l)MB Power Steering Fluid (Pentosin
CHF 11S)
Front wheel hubsapprox. 3.0 oz (85 g) eachHigh temperature roller bearing grease
Brake system0.64 US qt (0.6 l)MB Brake Fluid (DOT 4+)

457 Index
A
ABS 27, 88
Malfunction indicator lamp 356
Messages in display 370
Accelerator position,
automatic transmission 172
Accessory weight 337
Accident 58
Active head restraints 79
Resetting 403
Air bags 65
Children 80
Front passenger front
air bag off indicator lamp 74
Front side impact air bags 70
Front, Driver 69
Front, Passenger 69
Occupant Classification System
(OCS) 70
Rear side impact air bags* 70
Safety guidelines 68
Window curtain 70
Air conditioning refrigerant 450
Air conditioning system
see Climate control systemAir conditioning, Cooling 192, 204
Air distribution 188, 199
Air pressure see Tires, Inflation pressure
Air recirculation mode 190, 201
Air vents 193, 206
Air volume 188, 200
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 394, 418
Anticorrosion/antifreeze 453, 454
Antiglare, Rear view mirror 179, 180
Anti-theft systems 94
Anti-theft alarm system 94
Immobilizer 94
Aquaplaning see Hydroplaning
Armrest 270, 271
Ashtrays 272, 273
Aspect ratio 337
ATF 309
AUDIO menu 147
CD player (CD, MP3-CD) 148
Radio station 147
Radio station (satellite*) 147
Search function 161Audio system 207
Button and soft key operation 210
CD changer* 226
CD operation 223
Emergency calls "911" 243
MP3 224
Operating and display elements 208
Operating audio system 207
Operating safety 207
Radio operation 214
Sound system* 211
Switching on/off 210
Telephone* operation 207, 230
Auto-dimming, Rear view mirror 180
Automatic central locking,
Control system 118, 162
Automatic climate control see
Climate control system
Automatic headlamp mode see Headlamps
Automatic lighting control,
Interior lighting 136
Automatic locking when driving 118
Automatic shift program 174

458 Index
Automatic transmission
Accelerator position 172
Automatic shift program 174
Emergency operation
(limp-home mode) 178
Gear ranges 173
Gear selector lever 50, 168
Gear selector lever control
one-touch gearshifting 175
Gear selector lever positions 170
Gear shifting malfunctions 178
Kickdown 172
Program mode selector switch 174
Shifting procedure 169
Starting engine 50
Steering wheel gearshift control
one-touch gearshifting* 177
Transmission fluid level 309
Automatic Transmission Fluid see ATFB
Backrest 264
Seat, Multicontour* 123
Seat, Power 40
Backup lamps
Messages in display 389
Replacing bulbs 406, 407
Bar 337
BAS 90
Batteries, SmartKey
Changing 404
Checking battery condition 107
Battery, Vehicle 311, 421
Charging 423
Connecting 424
Disconnecting 422
Installing 423
Jump starting 425
Messages in display 378
Removing 423Bead 337
Beverage holder see Cup holder
Block heater (Canada only) 342
Bolts, Spare wheel 398
Brake fluid 450
Checking 305
Message in display 379
Brake lamp
Cleaning lenses 350
High mounted 407
Replacing bulbs 407, 411
Brake pads
Message in display 379
Brakes 294
Warning lamp 358
Break-in period 292
Bulbs, replacing see Replacing bulbs