tire type MERCEDES-BENZ SLK320 2003 R170 Owner's Manual

164 OperationDriving instructionsVehicles with Sport Package*
Your vehicle is factory equipped with
“Y”-rated tires, which have a speed rating
of 186 mph (300 km / h).
Despite of the tire speed rating, local
speed limits should be obeyed. Use pru-
dent driving speeds appropriate to prevail-
ing conditions.Winter driving instructions
The most important rule for slippery or icy
roads is to drive sensibly and to avoid
abrupt acceleration, braking and steering
maneuvers. Do not use the cruise control
system under such conditions.When the vehicle is in danger of skidding,
move selector lever to positionN or de-
clutch in case of manual transmission. Try
to keep the vehicle under control by cor-
rective steering action.
Road salts and chemicals can adversely af-
fect braking efficiency. Increased pedal
force may become necessary to produce
the normal brake effect.
We therefore recommend depressing the
brake pedal periodically when traveling at
length on salt-strewn roads. This can bring road salt impaired braking
efficiency back to normal. Be very careful
that you carry out these braking maneu-
vers without endangering any other road
users.
If the vehicle is parked after being driven
on salt-treated roads, the braking efficien-
cy should be tested as soon as possible af-
ter driving is resumed while observing the
safety rules in the previous paragraph.
iInformation on driving with snow
chains (
page 184).
Warning!
G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of loss of control.
Warning!
G
If the vehicle becomes stuck in snow, make
sure that snow is kept clear of the exhaust
pipe and from around the vehicle with the
engine running. Otherwise, deadly carbon
monoxide (CO) gases may enter vehicle in-
terior resulting in unconsciousness and
death.
To assure sufficient fresh air ventilation,
open a window slightly on the side of the ve-
hicle not facing the wind.

180 OperationTires and wheels
Tires and wheelsSee your authorized Mercedes-Benz Cen-
ter for information on tested and recom-
mended rims and tires for summer and
winter operation. They can also offer ad-
vice concerning tire service and purchase.
Retread tires are not tested or recom-
mended by Mercedes-Benz, since previous
damage cannot always be recognized on
retreads. Mercedes-Benz can therefore
not assure the operating safety of the vehi-
cle when such tires are used.
See your authorized Mercedes-Benz Cen-
ter for information on tested and recom-
mended rims and tires for summer and
winter operation.
Important guidelines

Use only sets of tires and rims of the
same type and make.


Tires must be of the correct size for the
rim.


Break in new tires for approximately
60 miles (100 km) at moderate
speeds.


Regularly check the tires and rims for
damage.


If vehicle is heavily loaded, check tire
pressure and correct as required.


Do not allow your tires to wear down
too far. Adhesion properties on wet
roads are sharply reduced at tread
depths under
1/8in (3 mm).


When replacing individual tires, you
should mount new tires on the front
wheels first (on vehicles with
same-sized wheels all around).
Warning!
G
Replace rims or tires with the same designa-
tion, manufacturer and type as shown on the
original part. See your authorized
Mercedes-Benz Center for further informa-
tion. If incorrectly sized rims and tires are
mounted:

The wheel brakes or suspension compo-
nents can be damaged.


The correct operating clearance of the
wheels and the tires are no longer guar-
anteed.
Warning!
G
Worn, old tires can cause accidents. If the
tire tread is badly worn, or if the tires have
sustained damage, replace them.
When replacing rims, use only genuine
Mercedes-Benz wheel bolts specified for the
particular rim type. Failure to do so can re-
sult in the bolts loosening and possibly an
accident.

282 Technical termsRetractable hardtop
Hardtop that can be opened and closed
at the push of a button and stored in
the trunk.
Roll bar
Occupant protection system which
consists of tubular steel sheathed in
plastic.
RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line's ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as
ANTI-KNOCK INDEX.Shift lock
When the vehicle is parked, this lock
prevents the transmission selector le-
ver from being moved out of positionP
without key turned and brake pedal de-
pressed.
SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and airbags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Tele Aid System
(T
elematic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, roadside assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call.The Tele Aid system is operational pro-
viding that the vehicle’s battery is
charged, properly connected, not dam-
aged and cellular and GPS coverage is
available.
Tightening torque
Force times lever arm (e.g. a lug
wrench) with which threaded fasteners
such as wheel bolts are tightened.
TIREFIT
Accessory for emergency and tempo-
rary tire repair. The TIREFIT kit consists
of a container with sealant material, a
filler hose, a valve stem tool, a valve in-
sert, and an air compressor.

297 Index
Safety systems
Driving 66
Saving current speed 137
Seat belts 57
Cleaning 192
Fastening 37
Proper use of 39, 59
Safety guidelines 55
Warning lamp 199
Seat heater*
Switching off 81
Switching on 81
Seats 81
Adjusting 30
Heater* 81
Manual 31
Rapid seat heating* 81
Selector lever 21
Lock 41
Position (automatic
transmission*) 21, 93
Self-test
BabySmart
TM airbag deactivation
system 63
Tele Aid* 145
ServiceCalling up the service indicator 186
Major service (Service B) 185
Minor service (Service A) 185
Overdue 186
Spare parts 256
Types 186
When due 185
Service (maintenance) 185
Service and Warranty Booklet
Loss of 257
Service and warranty information 8
Service indicator 185
Calling up 186
Clearing 185, 186
Service life (tires) 181
Service System see FSS 185
Setting
Clock 90
Cruise control 137
Higher speed in cruise control 138
Lower speed in cruise control 138
Slower speed in cruise control 138
Speed in cruise control 138
Temperature (interior) 104
Settings
Factory, Remote control 75Selective 75
Shelf behind roll bar 141
Shift lock 282
Shifting
Gear selector lever positions 96
Gearshift lever 91
Into optimal gear range (automatic
transmission*) 94
Into reverse (manual
transmission) 92
Side impact airbags 57
Side marker lamps
Replacing bulbs 221, 222, 225
Side windows
Automatic opening 127
Cleaning 190
Closing 127
Opening 127
Opening fully 127
Synchronizing power windows 128
Simultaneous wiping and washing
Windshield wipers 45
Single wipe 45
Snow chains 184
Soft keys
Audio system 115