wheel size MERCEDES-BENZ SL-Class 2015 R131 Owner's Manual

Maximum load on a tire (defini-
tion) ............................................... 587
Maximum permissible tire pres-
sure (definition) ............................. 587
Maximum tire load .........................5 85
Maximum tire load (definition) ....... 587
MOExtended tires .......................... 570
Optional equipment weight (defi-
nition) ............................................ 588
Overview ........................................ 568
PSI (pounds per square inch) (def-
inition) .......................................... .587
Replacing ....................................... 588
Service life ..................................... 570
Sidewall (definition) ....................... 588
Speed rating (definition) ................ 587
Storing .......................................... .589
Structure and characteristics
(definition) ..................................... 586
Summer tires ................................. 570
Temperature .................................. 582
TIN (Tire Identification Number)
(definition) ..................................... 588
Tire bead (definition) ..................... .588
Tire pressure (definition) ................ 587
Tire pressures (recommended) ...... 586
Tire size (data) ............................... 593
Tire size designation, load-bearing capacity, speed rating .................... 582
Tire tread ....................................... 569
Tire tread (definition) ..................... 588
Total load limit (definition) ............. 588
Traction ......................................... 581
Traction (definition) ....................... 588
Tread wea r..................................... 581
Uniform Tire Quality Grading
Standards ...................................... 581
Uniform Tire Quality Grading
Standards (definition) .................... 586
Wear indicator (definition) ............. 588
Wheel and tire combination ........... 596
Wheel rim (definition) .................... 587
see Flat tire
Tone settings
Balance and fader .......................... 296
Towing
Important safety guidelines ........... 559
Installing the towing eye ................ 560 Removing the towing eye ............... 561
With the rear axle raised ................ 561
Towing away
With both axles on the ground ....... 561
Tow-starting
Emergency engine starting ............ 562
Important safety notes .................. 559
Track
Selecting (CD, MP3) ....................... 447
Selecting using the number key-
pad ................................................ 448
Track information .............................. 492
Traffic jam function ........................... 349
Traffic reports Calling up a list .............................. 357
Reading out on route ..................... 359
Real-time traffic report .................. 358
Transmission
Selector lever ................................ 159
see Automatic transmission
Transporting the vehicle .................. 562
Treble, adjusting (sound) .................. 296
Trim pieces (cleaning instruc-
tions) .................................................. 545
Trip computer (on-board com-
puter) .................................................. 225
Trip odometer Calling up ....................................... 225
Resetting (on-board computer) ...... 226
True Image™ ...................................... 298
Trunk Emergency release .......................... 95
Important safety notes .................... 91
Locking separately ........................... 95
Opening/closing (automatically
from inside) ...................................... 95
Opening/closing (automatically
from outside) ................................... 92
Opening/closing (from outside,
HANDS-FREE ACCESS) .................... 93
Opening/closing (manually from
outside) ............................................ 92
Overview .......................................... 91
Power closing .................................. 90 26
Index

Setting the picture ......................... 473
Showing/hiding the control
menu ............................................. 474
Showing/hiding the menu ............. 475
Stop function ................................. 475
Subtitles ........................................ 478
Switching to ................................... 474
VIN ...................................................... 600
Voice Control System Setting s......................................... 308
Volume, adjusting
COMAND ....................................... 295
Navigation messages ..................... 295 W
Warning and indicator lamps ABS ................................................ 271
Brakes ........................................... 271
Check Engine ................................. 277
Coolant .......................................... 277
Distance warning ........................... 279
DISTRONIC PLUS ........................... 279
ESP ®
.............................................. 273
ESP ®
OFF ....................................... 274
Overview .......................................... 42
PASSENGER AIR BAG OFF ............... 51
Reserve fue l................................... 277
Restraint system ............................ 276
Seat belt ........................................ 269
SPORT handling mod e................... 274
Tire pressure monitor .................... 280
Warranty .............................................. 31
Washer fluid Display message ............................ 267
Waypoints
Accepting waypoints for the
route .............................................. 334
Creating ......................................... 331
Editing ........................................... 333
Entering ......................................... 331
Searching for a gas station when
the fuel level is lo w........................ 334
Weather Band
Searching for a channel ................. 438
Switching on .................................. 438 Weather map (SIRIUS)
Calling up ....................................... 503
Legend ........................................... 508
Moving ........................................... 504
Showing/hiding layers ................... 504
Showing/hiding the menu ............. 504
Time stamp .................................... 508
Weather memory (SIRIUS)
Selecting an area ........................... 503
Storing an area .............................. 503
Website
Add to favorites ............................. 431
Wheel and tire combination
see Tires
Wheel bolt tightening torque ........... 593
Wheel chock ...................................... 590
Wheels Changing a whee l.......................... 588
Checking ........................................ 569
Cleaning ......................................... 542
Cleaning (warning) ......................... 589
Important safety notes .................. 568
Interchanging/changing ................ 588
Mounting a new whee l................... 592
Mounting a whee l.......................... 589
Overview ........................................ 568
Removing a whee l.......................... 592
Storing ........................................... 589
Tightening torque ........................... 593
Wheel size/tire size ....................... 593
Windows
see Side windows
Wind screen
Electrical wind screen .................... 104
Windshield
Defrosting ...................................... 143
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 537
Notes ............................................. 606
Windshield wipers
Display message ............................ 267
Problem (malfunction) ................... 133
Replacing the wiper blades ............ 131
Switching on/of f........................... 130 28
Index

If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back
slightly when the vehicle is stationary.
The seat belt pre-tensioning is reduced and the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. Infor-
mation about the convenience function can
be found under "Belt adjustment"
(Y page 55). Automatic measures after an acci-
dent
Immediately after an accident, the following
measures are implemented, depending on
the type and severity of the impact:
R by activating the hazard warning lamps
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered
R the electrically adjustable steering wheel is
raised
R the engine is switched off
R vehicles with mbrace: automatic emer-
gency call Children in the vehicle
Important safety notes
If a child younger than 12 years and under 5 ft
(1.50 m) in height is traveling in the vehicle:
R always secure the child in a child restraint
system suitable for Mercedes-Benz vehi-
cles. The child restraint system must be
appropriate to the age, weight and size of
the child
R be sure to observe the instructions and
safety notes in this section in addition to the child restraint system manufacturer's
installation instructions
R be sure to observe the instructions and
safety notes on the "Occupant classifica-
tion system (OCS)" (Y page 59) G
WARNING
If you leave children unsupervised in the vehi- cle, they could set it in motion by, for example:
R release the parking brake.
R shift the automatic transmission out of the
parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. G
WARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle. G
WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight. Pro- tect it with a blanket, for example. If the childrestraint system has been exposed to direct
sunlight, let it cool down before securing the
child in it. Never leave children unattended in the vehicle.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit- ting properly. Particular attention must be
paid to children. 68
Children in the vehicleSafety

tection measures (PRE-SAFE
®
) are activa-
ted simultaneously.
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
BAS PLUS is deactivated and the brakes func-
tion as usual again, if:
R you release the brake pedal.
R there is no longer a risk of collision.
R no obstacle is detected in front of your
vehicle.
R you depress the accelerator pedal.
R you activate kickdown. ESP
®
(Electronic Stability Program)
General notes i
Observe the "Important safety notes" sec-
tion (Y page 71).
ESP ®
monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to keep the vehicle on the desired course within
physical limits. ESP ®
assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
ETS (Electronic Traction System) i
Observe the "Important safety notes" sec-
tion (Y page 71).
ETS traction control is part of ESP ®
.
ETS brakes the drive wheels individually if
they spin. This enables you to pull away and
accelerate on slippery surfaces, for example
if the road surface is slippery on one side. In
addition, more drive torque is transferred to
the wheel or wheels with traction. ETS remains active when you deactivate
ESP
®
.
i AMG vehicles:
your vehicle may be
equipped with 20-inch tires on the rear
axle. If replaced with a 19-inch tire, ETS
may intervene noticeably sooner for the
first few kilometers. After approximately
10 km ETS will function as usual again.
Information on the dimensions and types of
wheels and tires for your vehicle can be
found in the "Wheel/tire combinations"
section (Y page 593).
Important safety notes G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilize the vehicle. Additionally, further driv- ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop.
! When testing the electric parking brake
on a braking dynamometer, switch off the
ignition. Application of the brakes by ESP ®
may otherwise destroy the brake system.
When towing the vehicle with the rear axle
raised, observe the notes on
ESP ®
(Y page 561).
ESP ®
is deactivated if the 00BBwarning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the 00E5 warning lamp and the 00BBwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 273) and display messages which
may be shown in the instrument cluster
(Y page 240).
i Only use wheels with the recommended
tire sizes. Only then will ESP ®
function
properly. 74
Driving safety systemsSafety

Position of the steering wheel for driv-
ing The steering wheel is moved to the last selec-
ted position when:
R the driver's door is closed
R you insert the SmartKey into the ignition
lock
or
R you press the Start/Stop button once on
vehicles with KEYLESS-GO
When you close the driver's door with the
ignition switched on, the steering wheel is
also automatically moved to the previously
set position.
The last position of the steering wheel is
stored when you switch off the ignition or
when you store the setting with the memory
function (Y page 119).
Crash-responsive EASY-EXIT feature If the crash-responsive EASY-EXIT feature is
triggered in an accident, the steering column
will move upwards when the driver's door is
opened. This occurs irrespective of the posi-
tion of the SmartKey in the ignition lock. This makes it easier to exit the vehicle and rescue the occupants.
The crash-responsive EASY-EXIT feature is
only operational if the EASY-EXIT/ENTRY fea-
ture is activated in the on-board computer
(Y page 235). Mirrors
Exterior mirrors
Adjusting the exterior mirrors G
WARNING
The exterior mirrors reduce the size of the
image. Visible objects are actually closer than they appear. This means that you could mis-
judge the distance from road users traveling
behind, e.g. when changing lane. There is a
risk of an accident. For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder. G
WARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder. X
Make sure that the SmartKey is in position
1 or 2in the ignition lock.
X Press button 0043for the left-hand exterior
mirror or button 0044for the right-hand exte-
rior mirror.
The indicator lamp in the corresponding
button lights up in red.
The indicator lamp goes out again after
some time. You can adjust the selected
mirror using adjustment button 0087as long
as the indicator lamp is lit.
X Press adjustment button 0087up, down, to
the right or to the left.
The exterior mirror must be set to a position
that provides you with a good overview of
traffic conditions.
The convex exterior mirrors provide a larger
field of vision. 116
MirrorsSeats, steering wheel and mirrors

Vehicle preparation is not necessary on
vehicles with MOExtended tires
R a TIREFIT kit (Y page 548)
Information on changing/mounting a wheel
(Y page 588).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 171).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics now have status
0. This is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 151).
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking next to the tire size designation, the load-
bearing capacity and the speed index
(Y page 582).
MOExtended tires may only be used in con-
junction with an active tire pressure monitor.
If the pressure loss warning message
appears in the multifunction display:
R Observe the instructions in the display
messages (Y page 263).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is approx-
imately 50 miles (80 km) when the vehicle is
partially laden and approximately 18 miles
(30 km) when the vehicle is fully laden.
In addition to the vehicle load, the driving dis- tance possible depends upon:
R Speed
R Road condition
R Outside temperature
The driving distance possible in run-flat mode may be reduced by extreme driving condi-
tions/maneuvers, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display.
You must not exceed a maximum speed of
50 mph (80 km/h).
i When replacing one or all tires, make sure
that you use only tires:
R of the size specified for the vehicle and
R marked "MOExtended"
If a tire has gone flat and cannot be
replaced with a MOExtended tire, a stand-
ard tire may be used as a temporary meas-
ure. Make sure that you use the proper size and type (summer or winter tire). Flat tire
549Breakdown assistance

Useful information
i This Operator's manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops (Y page 35). Important safety notes
G
WARNING
If wheels and tires of the wrong size are used, the wheel brakes or suspension components
may be damaged. There is a risk of an acci-
dent.
Always replace wheels and tires with those
that fulfill the specifications of the original
part.
When replacing wheels, make sure to use the
correct:
R designation
R model
When replacing tires, make sure to use the
correct:
R designation
R manufacturer
R model G
WARNING
A flat tire severely impairs the driving, steer-
ing and braking characteristics of the vehicle.
There is a risk of accident.
Tires without run-flat characteristics:
R do not drive with a flat tire.
R immediately replace the flat tire with your
emergency spare wheel or spare wheel, or
consult a qualified specialist workshop. Tires with run-flat characteristics:
R pay attention to the information and warn-
ing notices on MOExtended tires (tires with
run-flat characteristics).
Accessories that are not approved for your
vehicle by Mercedes-Benz or are not being
used correctly can impair operating safety.
Before purchasing and using non-approved
accessories, visit a qualified specialist work-
shop and inquire about:
R suitability
R legal stipulations
R factory recommendations
Information on dimensions and types of
wheels and tires for your vehicle can be found (Y page 593).
Information on air pressure for the tires on
your vehicle can be found:
R on the vehicle's Tire and Loading Informa-
tion placard on the B-pillar (Y page 578)
R on the tire pressure label on the fuel filler
flap (Y page 169)
R in the "Tire pressure" section Operation
Information on driving
If the vehicle is heavily loaded, check the tire pressures and correct them if necessary.
While driving, pay attention to vibrations,
noises and unusual handling characteristics,
e.g. pulling to one side. This may indicate that
the wheels or tires are damaged. If you sus-
pect that a tire is defective, reduce your
speed immediately. Stop the vehicle as soon
as possible to check the wheels and tires for
damage. Hidden tire damage could also be
causing the unusual handling characteristics. If you find no signs of damage, have the tires
and wheels checked at a qualified specialist
workshop.
When parking your vehicle, make sure that
the tires do not get deformed by the curb or 568
OperationWheels and tires

approximately
00CDin(1.6 mm). If th is is the
case, the tire is so worn that it must be
replaced. Selecting, mounting and replacing
tires
R Only mount tires and wheels of the same
type and make.
Exception: it is permissible to install a dif-
ferent type or make in the event of a flat
tire. Observe the "MOExtended tires (tires
with run-flat characteristics" section
(Y page 549).
R Only mount tires of the correct size onto
the wheels.
R Break in new tires at moderate speeds for
the first 60 miles (100 km). They only reach
their full performance after this distance.
R Do not drive with tires which have too little
tread depth, as this significantly reduces
the traction on wet roads (hydroplaning).
R Replace the tires after six years at the lat-
est, regardless of wear. MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires.
MOExtended tires may only be used in con-
junction with an active tire pressure monitor
and only on wheels specifically tested by
Mercedes-Benz.
Notes on driving with MOExtended tires with
a flat tire (Y page 549).
i Vehicles equipped with MOExtended tires
are not equipped with a TIREFIT kit at the
factory. It is therefore recommended that
you additionally equip your vehicle with a
TIREFIT kit if you mount tires that do not
feature run-flat properties, e.g. winter tires. A TIREFIT kit can be obtained from a quali-
fied specialist workshop. Winter operation
General notes
Have your vehicle winter-proofed at a quali-
fied specialist workshop at the onset of win-
ter.
Observe the notes in the "Changing a wheel"
section (Y page 588). Driving with summer tires
At temperatures below 45 ‡(+7 †), su mmer
tires lose elasticity and therefore traction and braking power. Change the tires on your vehi-cle to M+S tires. Using summer tires at very
cold temperatures could cause cracks to
form, thereby damaging the tires perma-
nently. Mercedes-Benz cannot accept
responsibility for this type of damage. G
WARNING
Damaged tires can cause tire inflation pres-
sure loss. As a result, you could lose control of your vehicle. There is a risk of accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately. M+S tires
G
WARNING
M+S tires with a tire tread depth of less than
00CF in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There is
a risk of an accident.
M+S tires with a tread depth of less than 00CFin
(4 mm) must be replaced immediately.
At temperatures below 45 ‡(+7 †), use win-
ter tires or all-season tires. Both types of tire are identified by the M+S marking.
Only winter tires bearing the 004Dsnowflake
symbol in addition to the M+S marking pro- 570
Winter operationWheels and tires

vide the best possible grip in wintry road con-
ditions.
Only these tires will allow driving safety sys-
tems such as ABS and ESP ®
to function opti-
mally in winter. These tires have been devel-
oped specifically for driving in snow.
Use M+S tires of the same make and tread on all wheels to maintain safe handling charac-
teristics.
Always observe the maximum permissible
speed specified for the M+S tires you have
mounted.
Once the winter tires are mounted:
X Check the tire pressures (Y page 575).
X Restart the tire pressure monitor
(Y page 575). Snow chains
G
WARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is a risk of an accident.
To avoid hazardous situations:
R never install snow chains to the front
wheels
R always install snow chains in pairs to the
rear wheels.
! You must drive at raised vehicle level
(height 1) if snow chains have been instal-
led. The vehicle may otherwise be dam-
aged.
! On some tire sizes there is not enough
space for snow chains. To avoid damage to
the vehicle or tires, observe the "Wheel and tire combinations" section under "Tires and
wheels".
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that
have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding
standard of quality.
If you intend to mount snow chains, please
bear the following points in mind:
R Snow chains may not be mounted on all
wheel/tire combinations. Permissible
wheel-tire combinations (Y page 593).
R Only use snow chains when driving on
roads completely covered by snow.
Remove the snow chains as soon as possi-
ble when you come to a road that is not
snow-covered.
R Local regulations may restrict the use of
snow chains. Observe the appropriate reg-
ulations if you wish to install snow chains.
R Do not exceed the maximum permissible
speed of 30 mph (50 km/h).
R On vehicles with Active Body Control (ABC),
you must drive at a raised vehicle level if
snow chains have been installed
(Y page 194).
i You may wish to deactivate ESP ®
when
pulling away with snow chains installed
(Y page 74). You can thereby allow the
wheels to spin in a controlled manner, ach-
ieving an increased driving force (cutting
action). Winter operation
571Wheels and tires Z

Example: tire pressure table with tire dimensions
If a tire size precedes a tire pressure, the tirepressure information following is only valid
for that tire size. The load conditions "partially
laden" and "fully laden" are defined in the
table for different numbers of occupants and
amounts of luggage. The actual number of
seats may differ. Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g.
R18 . The rim diameter is part of the tire size
and can be found on the tire sidewall
(Y page 582).
If the tire pressures have been set to the
lower values for lighter loads and/or lower
road speeds, the pressures should be reset to the higher values:
R if you want to drive with an increased load
and/or
R if you want to drive at higher road speeds.
i The tire pressures for increased loads
and/or higher road speeds, shown in the
tire pressure table, may have a negative
effect on driving comfort. If the tire pressure is not set correctly, this
can lead to an excessive build up of heat and
a sudden loss of pressure.
For more information, contact a qualified spe- cialist workshop. Important notes on tire pressure
G
WARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident. R Check the tire for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop. G
WARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres- sure monitors keep the tire valve open. This
can also result in tire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Use a suitable pressure gauge to check the
tire pressure. The outer appearance of a tire
does not permit any reliable conclusion about the tire pressure. On vehicles equipped with
the electronic tire pressure monitoring sys-
tem, the tire pressure can be checked using
the on-board computer.
The tire temperature and pressure increase
when the vehicle is in motion. This is depend-
ent on the driving speed and the load.
Therefore, you should only correct tire pres-
sures when the tires are cold. Tire pressure
573Wheels and tires Z