2008 MERCEDES-BENZ SLK280 fuel

396 Practical hints
Unlocking/locking in an emergency
Insert mechanical key 2 into the
driver’s door lock until it stops.
Turn mechanical key 2 clockwise to
position1.
The driver’s door is locked.
Turn back mechanical key 2 and
remove it from driver’s door lock.Manually unlocking the gear selector
lever (automatic transmission*)
In case of power failure, the gear selector
lever can be manually unlocked, e.g. to tow
the vehicle.
1Gear selector lever cover
2Release
Insert flat, blunt object (e.g. screw-
driver) into the left edge of cover1 at
the position indicated by the arrows.
Loosen cover1 using this object.
Using your hands, pull cover1 out
and remove.
Push down and hold release2 in
direction of arrow.
Simultaneously move gear selector
lever out of positionP.
The gear selector lever is unlocked
now.1Locking
2Mechanical key
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap
and the storage compartments.
iThe gear selector lever is locked again as
soon as you place it in positionP again.


413 Practical hints
Flat tire
Version 2
aDeflate button
bPressure gauge
If the tire inflation pressure is at least
20 psi (1.3 bar), inflate or deflate the
tire to correct tire inflation pressure
(see placard on the driver’s door
B-pillar):
To increase tire inflation pressure:
Switch on the electric air pump.
To decrease tire inflation pressure
(version 1): Open vent screwa
on pressure gaugeb
(
page 411).
To decrease tire inflation pressure
(version 2): Press yellow deflate
buttona located in air pump hous-
ing next to pressure gaugeb.Drive to the nearest qualified work-
shop, e.g. an authorized
Mercedes-Benz Center, to have the
damaged tire replaced.
Recommended duration of use:
A maximum of 300 miles (500 km) at
50 mph (80 km/h) or below with the
recommended tire inflation pressure.
Contact an authorized Mercedes-Benz
Center as soon as possible to obtain a
new TIREFIT kit.
Bring used TIREFIT materials to an
authorized Mercedes-Benz Center for
proper disposal.
Replace your TIREFIT container every
4 years. Replacement containers are
available at any authorized
Mercedes-Benz Center.
Warning!G
Follow recommend inflation pressures.
Do not overinflate tires. Overinflating tires
can result in sudden deflation (blowout)
because they are more likely to become
punctured or damaged by road debris,
potholes, etc.
Do not underinflate tires. Underinflated tires
wear unevenly, adversely affect handling
and fuel economy, and are more likely to fail
from being overheated.
Do not overload the tires by exceeding the
specified vehicle capacity weight (as indicat-
ed by the label on the pillar in the driver’s
door opening). Overloading the tires can
overheat them, possibly causing a blowout.

419 Practical hints
Flat tire
PressI on electric air pump switch2.
The electric air pump switches on and
inflates the collapsible tire.
Inflate the collapsible tire to approxi-
mately 51 psi (3.5 bar).
This takes about 5 minutes. Air
hose4 and union nut5 can become
hot during inflation. Exercise proper
caution to avoid burning yourself when
using the equipment.
Press0 on electric air pump switch2.
Turn the SmartKey in the starter switch
to position0.
The electric air pump is switched off.
If the tire inflation pressure is above
51 psi (3.5 bar), release excess tire
inflation pressure using the vent screw
on air hose4.
Detach the electric air pump.
Reinstall tire valve cap.
Store electrical plug3 and air
hose4 behind flap 1 and place the
electric air pump back in the trunk.
Lower the vehicle (page 420).
!Compare the recommended tire inflation
pressure for your vehicle with the tire inflation
pressure on the yellow label located on the spare
wheel rim.
If the tire inflation pressure on the yellow label
on the spare wheel rim differs from the values
given in this Operator’s Manual, inflate the
collapsible tire to the recommended tire inflation
pressure given on the yellow label on the spare
wheel rim.
!Do not operate the electric air pump longer
than 6 minutes without interruption. Otherwise it
may overheat.
You may operate the electric air pump again
after it has cooled off.Warning!G
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly,
adversely affect handling and fuel economy,
and are more likely to fail from being over-
heated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride
comfort, wear unevenly, increase stopping
distance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.

426 Practical hints
Jump starting
If the battery is discharged, the engine can
be started with jumper cables and the bat-
tery of another vehicle. Observe the follow-
ing:

Jump starting should only be performed
when the engine and catalytic convert-
er are cold.

Do not start the engine if the battery is
frozen. Let the battery thaw out first.

Only jump start from batteries with the
same voltage rating (12 V). Jump start-
ing with a higher voltage battery could
damage the vehicle’s electrical system,
which will not be covered by the
Mercedes-Benz Limited Warranty.

Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.

Always make sure the jumper cables
are not on or near pulleys, fans, or
other parts that move when an engine
is started or running.
Warning!G
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never lean over batteries while connecting
or jump starting, as you could otherwise be
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 very explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery
can result in it exploding, causing personal
injury.
Read all instructions before proceeding.
!Vehicles with automatic transmission*:
Do not tow-start vehicle.
!Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine using a
battery quick charge unit.
If the engine does not run after several
unsuccessful starting attempts, have it checked
at the nearest authorized Mercedes-Benz
Center.
Excessive unburned fuel generated by repeated
failed starting attempts may damage the
catalytic converter and may present a fire risk.
Make sure the jumper cables do not have loose
or missing insulation.
Make sure the cable clamps do not touch any
other metal part while the other end is still at-
tached to a battery.

435 Technical data
Parts service
Warranty coverage
Identification labels
Layout of poly-V-belt drive
Engine
Rims and tires
Electrical system
Main Dimensions
Weights
Fuels, coolants, lubricants, etc.

441 Technical data
Engine
Engine
ModelSLK 280 (171.454)1
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special
equipment.
SLK 350 (171.456)1SLK 55 AMG (171.473)1
Engine272272113
Mode of operation4-stroke engine, gasoline
injection4-stroke engine, gasoline
injection4-stroke engine, gasoline
injection
No. of cylinders668
Bore3.47 in (88.00 mm)3.66 in (92.90 mm)3.82 in (97.00 mm)
Stroke3.23 in (82.10 mm)3.39 in (86.00 mm)3.60 in (92.00 mm)
Total piston displacement182.8 cu in (2 996 cm3)213.5 cu in (3 498 cm3)331.8 cu in (5 439 cm3)
Compression ratio11.3:110.7:111:1
Output according to
SAE J 1349228 hp/6 100 rpm2
(170 kW/6 100 rpm)
268 hp/6 000 rpm2
(200 kW/6 000 rpm)
2Premium fuel required. Performance may vary with fuel octane rating.
355 hp/5 750 rpm2
(265 kW/5 750 rpm)
Maximum torque according
to SAE J 1349221 lb-ft/2 500 - 5 000 rpm
(300 Nm/2 500 - 5 000 rpm)258 lb-ft/2 400 - 5 000 rpm
(350 Nm/2 400 - 5 000 rpm)376 lb-ft/4 000 rpm
(510 Nm/4 000 rpm)
Maximum engine speed6500 rpm6500 rpm6700 rpm
Firing order1-4-3-6-2-51-4-3-6-2-51-5-4-2-6-3-7-8
Poly-V-belt2404 mm2404 mm2380 mm

442 Technical data
Rims and tires
!Only use tires which have been tested and
approved by Mercedes-Benz. Tires approved by
Mercedes-Benz are developed to provide best
possible performance in conjunction with the
driving safety systems on your vehicle such as
ABS or ESP
®. Tires specially developed for your
vehicle and tested and approved by
Mercedes-Benz can be identified by finding the
following on the tire’s sidewall:

MO = Mercedes-Benz Original equipment
tires
AMG vehicles:
Does not apply to all approved tires on AMG
vehicles. For information on tested and
approved tires for AMG vehicles, contact an
authorized Mercedes-Benz Center.

MOE = Mercedes-Benz Original Extended
(tires with limited run-flat characteristics)
original equipment tires
Using tires other than those approved by
Mercedes-Benz may result in damage that is not
covered by the Mercedes-Benz Limited
Warranty.
iFor information on driving with MOExtended
tires, see “MOExtended system*” (
page 421).
!Using tires other than those approved by
Mercedes-Benz can have detrimental effects,
such as

poor handling characteristics

increased noise

increased fuel consumption
Moreover, tires and rims not approved by
Mercedes-Benz may, under load, exhibit
dimensional variations and different tire defor-
mation characteristics that could cause them to
come into contact with the vehicle body or axle
parts. Damage to the tires or the vehicle may be
the result.
iFurther information on tires and rims is
available at any authorized Mercedes-Benz
Center. A placard with the recommended tire
inflation pressures is located on the driver’s door
B-pillar. Some vehicles may have supplemental
tire inflation pressure information for driving at
high speeds (
page 313) or for vehicle loads
less than the maximum loaded vehicle condition
(
page 313). If such information is provided, it
can be found on the placard located on the in-
side of the fuel filler flap.The tire inflation pressure should be checked
regularly and should only be adjusted on cold
tires. Follow tire manufacturer’s maintenance
recommendation included with vehicle.
iThe following pages also list the approved
wheel rim and tire sizes for equipping your
vehicles with winter tires. Winter tires are not
available as standard or optional factory
equipment, but can be purchased from an
authorized Mercedes-Benz Center.
Depending on vehicle model and the standard or
optional factory-equipped wheel rim/tire config-
uration on your vehicle (Performance Package,
Sport Package etc.), equipping your vehicle with
winter tires approved for your vehicle model may
also require the purchase of two or four wheel
rims of the recommended size for use with these
winter tires. Contact an authorized
Mercedes-Benz Center for more information.

451 Technical data
Fuels, coolants, lubricants, etc.
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
Service Products pamphlet (USA only), or
inquire at an authorized 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 you skin or clothing.
If a service fluid is swallowed, contact a
physician immediately.
ModelCapacityFuels, coolants, lubricants etc.
Engine with oil filterAll models8.5 US qt (8.0 l)Approved engine oils
Automatic transmission*SLK 280, SLK 3509.5 US qt (9.0 l)MB Automatic Transmission Fluid
SLK 55 AMG9.2 US qt (8.7 l)
Manual transmissionSLK 280, SLK 3501.6 US qt (1.5 l)MB Manual Transmission Oil
Rear axleSLK 2801.1 US qt (1.0 l)Hypoid gear oil SAE 85 W 90
SLK 3501.2 US qt (1.1 l)
SLK 55 AMG1.3 US qt (1.2 l)