2014 MERCEDES-BENZ SL-Class tow bar

Important safety notes
..................583
Restarting ...................................... 585
Warning lamp ................................. 284
Warning message .......................... 585
Tires
Aspect ratio (definition) .................596
Average weight of the vehicle
occupants (definition) ....................594
Bar (definition) ............................... 594
Changing a wheel .......................... 596
Characteristics .............................. 594
Checking ........................................ 577
Definition of terms .........................594
Direction of rotatio n...................... 597
Display message ............................ 267
Distribution of the vehicle
occupants (definition) ....................596
DOT, Tire Identification Number
(TIN) .............................................. .593
DOT (Department of
Transportation) (definition) ............594
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 595
GVW (Gross Vehicle Weight)
(definition) ..................................... 595
GVWR (Gross Vehicle Weight
Rating) (definition) .........................595
Important safety notes ..................576
Increased vehicle weight due to
optional equipment (definition) ......595
Kilopascal (kPa) (definition) ...........595
Labeling (overview )........................ 590
Load bearing index (definition) ......596
Load index ..................................... 593
Load index (definition) ...................595
M+S tires ....................................... 578
Maximum loaded vehicle weight
(definition) ..................................... 595
Maximum load on a tire (definition) 595
Maximum permissible tire
pressure (definition) ....................... 595
Maximum tire loa d......................... 593
Maximum tire load (definition) .......595
MOExtended tires ..........................578
Optional equipment weight
(definition) ..................................... 596
Overview ........................................ 576PSI (pounds per square inch)
(definition)
..................................... 595
Replacing ....................................... 597
Service life ..................................... 578
Sidewall (definition) .......................596
Speed rating (definition) ................595
Storing ........................................... 597
Structure and characteristics
(definition) ..................................... 594
Summer tires ................................. 578
Temperature .................................. 590
TIN (Tire Identification Number)
(definition) ..................................... 596
Tire bead (definition) ......................596
Tire pressure (definition) ................596
Tire pressures (recommended )...... 594
Tire size (data) ............................... 602
Tire size designation, load-bearing
capacity, speed rating .................... 590
Tire tread ....................................... 577
Tire tread (definition) .....................596
Total load limit (definition) .............596
Traction ......................................... 589
Traction (definition) .......................596
Tread wea r..................................... 589
Uniform Tire Quality Grading
Standards ...................................... 589
Uniform Tire Quality Grading
Standards (definition) ....................594
Unladen weight (definition) ............595
Wear indicator (definition) .............596
Wheel rim (definition) ....................595
see Flat tire
Tone settings
Balance and fader ..........................300
Towing
Important safety guidelines ...........567
Installing the towing eye ................568
Removing the towing eye ...............569
With the rear axle raised ................569
Towing away
With both axles on the ground .......569
Tow-starting
Emergency engine starting ............570
Important safety notes ..................567
Track
Selecting (CD, DVD, MP3) .............. 452
Selecting using the number keypad 452 Index
25

deployment thresholds for lateral
acceleration/deceleration. You will then be
protected by the fastened seat belt.
The head bag on the front-passenger side is
not deployed in the following situations:
R the OCS system detects that the front-
passenger seat is not occupied, and
R the front-passenger seat belt is not
fastened.
The head bag on the front-passenger side will
deploy if the front-passenger seat belt is
fastened, regardless of whether the front-
passenger seat is occupied or not. Roll bar
G
DANGER
If the roll bar has developed a malfunction, it
may not function, e.g. in the event of an
accident. The roll bars may then not protect
the vehicle occupants as intended. This poses
an increased risk of injury or even fatal injury.
Have roll bars checked immediately at a
qualified specialist workshop. G
WARNING
If you place objects or clothing on the roll bar
covers, these could impair roll bar extension.
The roll bars may then not protect the vehicle
occupants as intended. In addition, objects
could endanger the vehicle occupants when
the roll bar is extending. This poses an
increased risk of injury or even fatal injury.
Ensure that the movement area of the roll bar
covers is kept clear. Always stow all objects
in the vehicle correctly. The roll bars are located in the rear area of
the vehicle under the two outer rear
compartment trim covers.
The roll bars are extended automatically if
systems detect that the vehicle is in danger
of rolling over. The two rear compartment
trim covers are opened and the roll bars are
extended within fractions of a second.
Once the roll bars are extended, you can no
longer lower them. An open roof can no
longer be closed. In this case, visit the nearest
qualified specialist workshop.
Occupant Classification System
(OCS)
Method of operation G
WARNING
If the 0073 PASSENGER AIR BAG OFF
indicator lamp illuminates when an adult or
someone larger than a small individual is in
the front-passenger seat, have the front
passenger reposition himself or herself in the
seat until the 0073PASSENGER AIR BAG OFF
indicator lamp goes out.
In the event of a collision, the air bag control
unit will not allow front-passenger front air
bag and front-passenger knee bag
deployment when the OCS has classified the
front-passenger occupant as weighing as
much as or less than a typical 12 month old
child in a standard child restraint or if the
front-passenger seat is classified as being
unoccupied. Occupant safety
55Safety
Z

Moving the seats forward/back
G
WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the
seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
! Make sure that there are no containers in
the cup holder and no objects in the
footwell or behind the seats when adjusting
the seats. Otherwise, you could damage
the seats and the objects. You can move the seat forwards in order to
gain better access to the rear compartment,
e.g. to reach the stowage compartment in the
rear (Y page 522).
X Remove the seat belt from the seat belt
guide (Y page 115).
X To move the seat forwards: press0064
on switch 0043.
The seat moves automatically to the
foremost position.
X To move the seat backwards: press
0063 on switch 0043.
The seat moves back to the previous
position.
X To stop seat movement: press0064or
0063 in the opposite direction. Adjusting the multicontour seat
You can set the multicontour seat using
COMAND (Y page 319). Adjusting the active multicontour
seat
You can set the active the active multicontour
seat using COMAND (Y page 319). Adjusting the 4-way lumbar support
You can adjust the 4-way lumbar support
using COMAND (Y page 319). Switching the seat heating on/off
Activating/deactivating G
WARNING
Repeatedly switching on the seat heating can
cause the seat cushion and backrest pads to
become very hot. The health of persons with
limited temperature sensitivity or a limited
ability to react to excessively high
temperatures may be affected or they may
even suffer burn-like injuries. There is a risk
of injury.
Therefore, do not switch the seat heating on
repeatedly. Driver's and front-passenger seat
The three red indicator lamps in the button
indicate the heating level you have selected.116
SeatsSeats, steering wheel and mirrors

AIRSCARF
Activating/deactivating G
WARNING
When AIRSCARF is switched on, very hot air
can flow from the vents in the head restraints.
This could result in burns in the immediate
vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes
too hot. The AIRSCARF function warms the head and
neck area of vehicle occupants with warm air.
The warm air flows out of the holes in the head
restraints.
The three red indicator lamps in the button
indicate the heating level you have selected.
X Make sure that the SmartKey is in position
2in the ignition lock.
X To switch on: press button0043.
Three red indicator lamps in the button light
up. The blower starts up after a preheating
phase of seven seconds.
X Press button 0043repeatedly until the
desired heating level is set.
X To switch off: press button0043repeatedly
until all the indicator lamps go out.
i The blower continues running for seven
seconds to cool down the heating
elements.
i If the battery voltage is too low, AIRSCARF
may switch off. Steering wheel
Important safety notes
G
WARNING
You could lose control of your vehicle if you
do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before starting the engine. G
WARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged. There
is a risk of an accident.
Always switch off the ignition when towing the
vehicle with a tow cable or a tow bar. Adjusting the steering wheel
electrically
0043
To adjust the steering wheel height
0044 To adjust the steering wheel position
(fore-and-aft adjustment)
i Further related subjects:
R EASY-ENTRY/EXIT feature
(Y page 119)
R Storing settings (Y page 123)118
Steering wheelSeats
, steering wheel and mirrors

!
If unavoidable, you should drive over
obstacles such as curbs slowly and not at
a sharp angle. Otherwise, you may damage
the wheels or tires.
Active Parking Assist may possibly indicate
parking spaces which are not suitable for
parking, for example:
R where parking or stopping is prohibited
R in front of driveways or entrances and exits
R on unsuitable surfaces
Parking tips:
R On narrow roads, drive as close to the
parking space as possible.
R Parking spaces that are littered or
overgrown might be identified or measured
incorrectly.
R Parking spaces that are partially occupied
by trailer drawbars might not be identified
as such or be measured incorrectly.
R Snowfall or heavy rain may lead to a parking
space being measured inaccurately.
R Pay attention to the PARKTRONIC
(Y page 205) warning messages during the
parking procedure.
R You can intervene in the steering procedure
to correct it at any time. Active Parking
Assist will then be canceled.
R When transporting a load which protrudes
from your vehicle, you should not use
Active Parking Assist.
R Never use Active Parking Assist when snow
chains are installed.
R Make sure that the tire pressures are
always correct. This has a direct influence
on the parking characteristics of the
vehicle.
Parking Important safety notes
Objects located above the height range of
Active Parking Assist will not be detected
when the parking space is measured. These
are not taken into account when the parking procedure is calculated, e.g. overhanging
loads, tail sections or loading ramps of goods
vehicles. In some circumstances, Active
Parking Assist may therefore guide you into
the parking space too early. G
WARNING
If there are objects above the detection range,
Active Parking Assist may turn prematurely.
You may cause a collision as a result. There is
a risk of an accident.
If there are objects above the detection range,
stop and deactivate Active Parking Assist. G
WARNING
Active Parking Assist merely aids you by
intervening actively in the steering. If you do
not brake there is a risk of an accident.
Always apply the brakes yourself when
maneuvering and parking.
Detecting parking spaces Example: detected parking space
Active Parking Assist is switched on
automatically when driving forwards. The
system is operational at speeds of up to
approximately 22 mph (35 km/h). While in
operation, the system independently locates
and measures parking spaces on both sides
of the vehicle. When driving at speeds below
19 mph (30 km/h) you will see parking
symbol
0044as a status indicator in the
instrument cluster. When a parking space has
been detected, an arrow towards the right
0087 or the left 0043also appears.
By default, Active Parking Assist only displays
parking spaces on the front-passenger side.
Parking spaces on the driver's side are
displayed as soon as the turn signal on the
driver's side is activated. If you wish to park Driving systems
207Driving and parking Z

Activating/deactivating the rear view
camera X
To activate: make sure that the SmartKey
is in position 2in the ignition lock.
X Make sure that the "Show rear view camera
display" function is selected in COMAND
(Y page 322).
X Engage reverse gear.
The area behind the vehicle is shown in the
COMAND display with guide lines.
To deactivate: the rear view camera is
deactivated if you:
R shift the transmission to position P
R drive 33 ft (10 m) forwards
R shift the transmission from Rto another
position after 15 seconds
R drive forwards at a speed of over 5 mph
(10 km/h)
Displays in the COMAND display The rear view camera may show a distorted
view of obstacles, show them incorrectly or
not at all. The rear view camera does not show
objects in the following positions:
R very close to the rear bumper
R under the rear bumper
R in the area immediately above the tailgate
handle
! Objects not at ground level may appear to
be further away than they actually are, e.g.:
R the bumper of a parked vehicle
R the drawbar of a trailer
R the ball coupling of a trailer tow hitch
R the rear section of an HGV
R a slanted post
Use the guidelines only for orientation.
Approach objects no further than the
bottom-most guideline. 0043
White guide line without turning the
steering wheel, vehicle width including
the exterior mirrors (static)
0044 Yellow guide line at a distance of
approximately 13 ft (4.0 m) from the rear
of the vehicle
0087 Red guide line for the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
0085 Yellow lane marking tires at current
steering wheel angle (dynamic) 0083
Yellow guide line at a distance of
approximately 3 ft (1.0 m) from the rear
of the vehicle
0084 Vehicle center axle (marker assistance)
006B Bumper
006C Red guide line at a distance of
approximately 10 in (0.25 m) from the
rear of the vehicle
The guide lines are shown when the
transmission is in position R.
The distance specifications only apply to
objects that are at ground level. Driving systems
211Driving and parking Z

You can use COMAND to operate the
following main functions:
R the navigation system
R the audio function
R the telephone function
R the video function
R the system settings
R the online and Internet functions
R the Digital Operator's Manual
(available depending on the vehicle model)
You can call up the main functions:
R using the corresponding function buttons
R using the main function bar in the COMAND
display
R using the remote control
COMAND display General notes
!
Do not use the space in front of the
display to stow anything. Objects placed
here could damage the display or impair its
function. Avoid touching the surface of the
display. Pressure exerted on the surface of
the display can have an irreversible,
detrimental effect on the display.
Wearing polarized sunglasses may impair
your ability to read the display.
The display has an automatic temperature-
controlled switch-off feature. The brightness
is automatically reduced if the temperature is
too high. The display may temporarily switch
off completely. 290
At a glanceCOMAND

H
Environmental note
Have the used tire sealant bottle disposed of
professionally, e.g. at a qualified specialist
workshop.
If a tire pressure of 180 kPa (1.8 ba r/26 psi)
has been achieved after a maximum period of
ten minutes:
X Switch off the tire inflation compressor.
X Unscrew the filler hose from the valve of
the faulty tire.
X Stow the tire sealant bottle and the tire
inflation compressor.
X Pull away immediately.
The maximum speed for a tire sealed with
tire sealant is 50 mph (80 km/h). The upper
part of the TIREFIT sticker must be affixed
to the instrument cluster in the driver's
field of vision.
X Stop after driving for approximately ten
minutes and check the tire pressure with
the tire inflation compressor.
The tire pressure must now be at least
130 kPa (1.3 bar/19 psi). G
WARNING
If the required tire pressure is not reached
after driving for a short period, the tire is too
badly damaged. The tire sealant cannot repair
the tire in this instance. Damaged tires and a
tire pressure that is too low can significantly
impair the vehicle's braking and driving
characteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
X Correct the tire pressure if it is still at least
130 kPa (1.3 bar/19 psi) (for the values,
see the Tire and Loading Information
placard on the driver's side B-pillar or tire
pressure table on the fuel filler flap).
X To increase the tire pressure: switch on
the tire inflation compressor. X
To reduce the tire pressure: depress
pressure release button 0043next to
pressure gauge 0044.
X When the tire pressure is correct, unscrew
the filler hose from the valve of the sealed
tire.
X Screw the valve cap onto the tire valve of
the sealed tire.
X Pull the tire sealant bottle out of the tire
inflation compressor.
The filler hose remains attached to the tire
sealant bottle.
X Stow the tire sealant bottle and the tire
inflation compressor.
X Drive to the nearest qualified specialist
workshop and have the tire changed there.
X Have the tire sealant bottle replaced as
soon as possible at a qualified specialist
workshop.
X Have the tire sealant bottle replaced every
four years at a qualified specialist
workshop. Battery (vehicle)
Important safety notes
Special tools and expert knowledge are
required when working on the battery, e.g.
removal and installing. You should therefore
have all work involving the battery carried out
at a qualified specialist workshop. Battery (vehicle)
561Breakdown assistance Z