2007 MERCEDES-BENZ SLK CLASS fuel pressure

406 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 404).
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 your 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.


412 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 413).
!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.


434 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 414).
!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.

447 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:

The octane number (posted at the
pump) must be 91 min. It is an
average of both the Research Octane
Number (RON) and the Motor Octane
Number (MON): (RON+MON)/2. This is
also known as the ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA, and TBA can
be used provided the ratio of any one of
these oxygenates to gasoline does not
exceed 10%; MTBE not to exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional cosolvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains
10% ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz only recommends
only the use of quality gasoline containing
additives that prevent the build-up of
carbon deposits.
After an extended period of using fuels
without such additives, carbon deposits
can build up, especially on the intake
valves and in the combustion area, leading
to engine performance problems such as:

Warm-up hesitation

Unstable idle

Knocking/pinging

Misfire

Power lossIn areas where carbon deposits may be
encountered due to lack of availability of
gasolines which contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Center for a listing of
approved product(s). Follow directions on
product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary costs and
may be harmful to engine operation.
!Damage or malfunction resulting from poor
fuel quality or from blending additional fuel
additives other than those tested and approved
by us for use on Mercedes-Benz vehicles are not
covered by the Mercedes-Benz Limited
Warranty.

453 Index
C
California retail buyers and lessees,
Important notice for 11
Call priority, Tele Aid* 268
Capacities and recommended
fuels/lubricants 443
Carpets, cleaning 342
Catalytic converter 288
CD
Changer* 208, 252
Player/Changer*, operation 134,
208
CD changer* (Audio system) 212
Center console
Lamp 354
Lower part 30
Upper part 29Central locking
Automatic 102, 146
Locking/unlocking from inside 102
SmartKey 62
Certification label 430
CHECK ENGINE indicator lamp 349
Children in the vehicle
Air bags 79
Passenger front air bag off indicator
lamp 74, 354
Infant and child restraint systems 79
Occupant Classification System
(OCS) 71
Cigarette lighter 32, 256Climate control 172
Air conditioning refrigerant 444
Air conditioning, Cooling 180
Air recirculation mode 178
Air vents 172
Air volume 177
Control panel 174
Defrosting 170, 177
Residual heat utilization 181
Switching on/off 175
Temperature 175
Clock 120
Cockpit 24
Cold tire inflation pressure 328
Collapsible wheel chock 384
COMAND* system 29
Driving instructions 287
Navigation 135

460 Index
Manual transmission 153
Driving 53
Gearshift pattern 51
Starting with SmartKey 51
Maximum inflation pressure 329
Maximum load rating 328
Maximum loaded vehicle weight 328
Mechanical key see SmartKey
Memory function* 107
Menus see Control system menus
Messages in the multifunction display see
Multifunction display messages
Mirror lamp* see Sun visors
Mirrors 168
Additional turn signals 394
Adjusting 46
Antiglare position 168
Auto-dimming* 169
Exterior rear view mirrors 46
Interior rear view mirror 46Mobile phone see Telephone*
MOE tires* see MOExtended system*
MOExtended system* 317, 414
MON 292, 447
Motor Octane Number see MON
MP3 210
Multifunction display 121
Multifunction display messages 356
ABS 358
Air bags 361–364
Battery, Vehicle 366
Brake fluid 367
Brakes 367
Bulbs 375–380
Coolant 368–370
Cruise control 358
Doors 371
Engine oil 372–373
ESP
®358, 359Passenger front air bag 363
Fuel 374
Hood 375
Maintenance service indicator 334
Parking brake 366
Retractable hardtop 374, 381
Run Flat Indicator* 365
Seat belt 381
SmartKey 375
SRS 360
Symbol messages 366
Telephone* 381
Text messages 358
Transmission 360
Trunk lid 381
Vehicle status message memory 135
Washer fluid 381
Multifunction steering wheel 28, 122
Heating* 276

462 Index
Phone book see Telephone*
Plastic parts, cleaning 342
Poly-V-belt drive 432
Potential problems associated with under-
inflated and overinflated tires 317
Power outlet 257
Power seat* see Seats
Power washer see Vehicle care
Power windows 235
Operating rear side windows 237
Operating with retractable hardtop
switch 237
Summer opening/convenience
closing* 238
Synchronizing 239Practical hints
Fuses 425
Lamps in instrument cluster 346
Spare wheel bolts 386
Towing vehicle 421
Vehicle jack 383
What to do if... 346
Premium unleaded gasoline 446
Problems
While driving 58
With vehicle 17
Product information 9
Production options weight 329
Program mode see Automatic transmis-
sion, Automatic shift program
Program mode selector switch
Automatic shift program 161
PSI 329R
RACETIMER see Control system menus,
AMG
Radio
Operation (Audio system) 199
Operation (Control system) 133
Satellite* (USA only) 134
Radio transmitters, control and
operation 287
Reading lamps 117
Rear view mirrors see Mirrors
Rear window defroster 170
Recommended inflation pressure 329
Recovery services for stolen vehicle (Tele
Aid*) 269
Refrigerant (Air conditioning) 445
Refueling 291
Regular checks 292
Remote control see SmartKey