2012 MERCEDES-BENZ SL550 air bag

Vehicle equipment
iThis Operator’s Manual describes all
features, standard or optional, potentially
available for your vehicle at the time of
purchase. Please be aware that your
vehicle might not be equipped with all
features described in this manual.
Where will I find ...?
First aid kit
! Always keep the storage compartment
under the passenger seat closed while the
vehicle is in motion.
iCheck expiration dates and contents for
completeness at least once a year and
replace missing/expired items.
The first aid kit is located in the storage
compartment under the passenger seat.
XPull handle : upward.XFold lid ; down.XRemove the first aid kit.
Vehicle tool kit
The vehicle tool kit is located in the space
underneath the trunk floor.
iVehicles without spare wheel are not
factory-equipped with the tools required for
a wheel change such as a jack or a wheel
wrench. Some tools required for a wheel
change are specific to your vehicle.
Contact an authorized Mercedes-Benz
Center to obtain the tools approved for
your vehicle.
The vehicle tool kit includes:
R2 open-end wrenches17
RAlignment bolt 17
RElectric air pump
RFuse chart
RHex-socket wrench
RInterchangeable slot/Phillips screwdriver
RJack17
RPair of universal pliers
RProtective wrap
RTowing eye bolt
RWheel wrench
RWheel wrench17
XRemoving: Open the trunk (Y page 73).XLift the trunk floor.:Electric air pump;Tool bag=Storage well casing?Protective wrap
iFor transporting the damaged road wheel,
use protective wrap ? (if so equipped).
17Vehicles with spare wheel only.224Where will I find ...?Practical hints
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Display messagesPossible causes/consequences and M SolutionsFront
Passeng.
AirbagEnabled
See Oper.
ManualThe passenger front air bag is activated while driving even
though a child, small individual, or object below the system’s
weight threshold is on the passenger seat, or the passenger
seat is empty. Objects on the seat or forces acting on the seat
may make the system sense supplemental weight.XStop the vehicle in a safe location as soon as possible.XEngage the parking brake.XSwitch off the ignition.XOpen the passenger door.XRemove child and child restraint from passenger seat.XMake sure no objects which apply supplemental weight to
the seat are present. The system may recognize such
supplemental weight and sense that an occupant on the
passenger seat is of a greater weight than actually present.XKeep the seat unoccupied, close the passenger door and
switch on the ignition.
Monitor the 45 indicator lamp ( Y page 45) and the
multifunction display in the instrument cluster (Y page 30) for
the following:
With the seat unoccupied and the ignition switched on,
R the 45 indicator lamp in the center console should
illuminate and remain illuminated, indicating that the OCS
( Y page 43) has deactivated the passenger front air bag.
R the message Front Passeng. Airbag Enabled See
Oper. Manual or the message Front Passeng. Airbag
Disabled See Oper. Manual should not appear in the
multifunction display at any time the seat is unoccupied.
Wait at least 60 seconds for the system to complete the
necessary check cycles and to make sure neither message
appears in the multifunction display.
If above conditions are met, you can occupy the passenger
seat again. Depending on the passenger classification sensed
by the OCS, the 45 indicator lamp will remain
illuminated or go out.
If above conditions are not met, the system is not working
properly. Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
Vehicle status messages in the multifunction display229Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 229Z

GWarning!
If the 45 indicator lamp remains out even after performing the above corrective steps,
do not have any children 12 years old and under and other small individuals use the passenger
seat until the system has been repaired.
Display messagesPossible causes/consequences and M SolutionsFront
Passeng.
Airbag Disabled
See Oper.
ManualThe passenger front air bag is deactivated while driving even
though an adult or someone larger than a small individual is
occupying the passenger seat. Forces acting on the seat may
make the system sense a decrease in weight.XStop the vehicle in a safe location as soon as possible.XEngage the parking brake.XSwitch off the ignition.XHave the passenger vacate the seat and exit the vehicle.XKeep the seat unoccupied, close the passenger door and
switch on the ignition.
Monitor the 45 indicator lamp ( Y page 45) and the
multifunction display in the instrument cluster (Y page 30) for
the following:
With the seat unoccupied and the ignition switched on,
R the 45 indicator lamp should illuminate and remain
illuminated, indicating that the OCS ( Y page 43) has
deactivated the passenger front air bag.
R the message Front Passeng. Airbag Enabled See
Oper. Manual or the message Front Passeng. Airbag
Disabled See Oper. Manual should not appear in the
multifunction display at any time the seat is unoccupied.
Wait at least 60 seconds for the system to complete the
necessary check cycles and to make sure neither message
appears in the multifunction display.
If above conditions are met, you can occupy the passenger
seat again. Depending on the passenger classification sensed
by the OCS, the 45 indicator lamp will remain
illuminated or go out.
If above conditions are not met, the system is not working
properly. Have the system checked at an authorized
Mercedes-Benz Center as soon as possible.
GWarning!
If the 45 indicator lamp remains illuminated with an adult occupant on the passenger
seat even after performing the above corrective steps, do not have any passenger use the
passenger seat until the system has been repaired.
230Vehicle status messages in the multifunction displayPractical hints
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Safety systemsDisplay messagesPossible causes/consequences and M SolutionsIRaise
Roll-over
BarThe roll bar is malfunctioning.
For safety reasons, always have the roll bar raised when
driving with the retractable hardtop open.XAttempt to raise the roll bar using the roll bar button
( Y page 51).XHave the roll bar checked at an authorized Mercedes-Benz
Center.IRaise
Roll-over
BarThe roll bar was raised automatically and you have attempted
to open or close the retractable hardtop.XRaise the roll bar manually until you hear the roll bar lock
into place ( Y page 51).XOpen or close the retractable hardtop.GTele Aid
Inoperativ
eOne or more main functions of the Tele Aid system are
malfunctioning.XHave the Tele Aid system checked at an authorized
Mercedes-Benz Center.+Restraint
System
Malfunctio
n
Service
RequiredThere is a malfunction in the Supplemental Restraint System
(SRS). The air bags or the Emergency Tensioning Devices
(ETDs) could deploy unexpectedly or fail to activate in an
accident.XDrive with added caution to the nearest authorized
Mercedes-Benz Center and have the system checked
immediately.GWarning!
In the event a malfunction of the SRS is
indicated as outlined above, the SRS may not
be operational.
For your safety, we strongly recommend that
you contact an authorized Mercedes-Benz
Center immediately to have the system
checked. Otherwise the SRS may not be
activated when needed in an accident, which
could result in serious or fatal injury, or it
might deploy unexpectedly and unnecessarily
which could also result in injury.240Vehicle status messages in the multifunction displayPractical hints
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ProblemPossible causes/consequences and M Solutions7The red seat belt
telltale comes
on while the
vehicle is
standing still
and the engine is
running or while
driving.You and/or your passenger have forgotten to fasten your seat
belts.XFasten your seat belts.
The seat belt telltale goes out.There are items placed on the passenger seat and therefore the
system senses the passenger seat as being occupied.XRemove the items from the passenger seat and put them in a
safe place.
The seat belt telltale goes out.7The red seat belt
telltale flashes
while driving. In
addition, an
intermittent
warning chime
sounds with
increasing
intensity.The vehicle’s speed once exceeded 15 mph (25 km/h) and you
and/or your passenger have forgotten to fasten your seat belts.XFasten your seat belts.
The seat belt telltale goes out and the warning chime stops
sounding.There are items placed on the passenger seat and therefore the
system senses the passenger seat as being occupied.XRemove the items from the passenger seat and put them in a
safe place.
The seat belt telltale goes out and the warning chime stops
sounding.
i After 60 seconds with an unfastened seat belt the warning chime stops sounding and the
seat belt telltale illuminates continuously. The seat belt telltale will only go out if both, the
driver and passenger’s seat belt are fastened, or the vehicle is standing still and a door is
opened.
ProblemPossible causes/consequences and M Solutions+The red SRS
indicator lamp
comes on while
driving.There is a malfunction in the restraint systems. The air bags or
Emergency Tensioning Devices (ETDs) could deploy unexpectedly
or fail to activate in an accident.XDrive with added caution to the nearest authorized Mercedes-
Benz Center.GWarning!
In the event a malfunction of the SRS is
indicated as outlined above, the SRS may not
be operational.
For your safety, we strongly recommend that
you contact an authorized Mercedes-Benz
Center immediately to have the system
checked. Otherwise the SRS may not be
activated when needed in an accident, which
could result in serious or fatal injury, or it
might deploy unexpectedly and unnecessarily
which could also result in injury.What to do if …257Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 257Z

Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle’s
handling and stopping ability. Please note that
the TPMS is not a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale. When the
system detects a malfunction, the telltale will
flash for approximately 1 minute and thenremain continuously illuminated. This
sequence will continue upon subsequent
vehicle start-ups as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS to
continue to function properly.
Lamp in center console
ProblemPossible causes/consequences and M Solutions45
The passenger front air
bag off indicator lamp
illuminates and
remains illuminated
with the weight of a
typical adult or
someone larger than a
small individual on the
passenger seat.The system is malfunctioning.XHave the system checked as soon as possible at an authorized
Mercedes-Benz Center.XRead and observe messages in the multifunction display and
follow corrective steps ( Y page 226).GWarning!
If the 45 indicator lamp illuminates
and remains illuminated with the weight of a
typical adult or someone larger than a small
individual on the passenger seat, do not have
any passenger use the passenger seat until
the system has been repaired.266What to do if …Practical hints
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ProblemPossible causes/consequences and M Solutions45
The passenger front air
bag off indicator lamp
does not illuminate
and/or does not
remain illuminated with
the weight of a typical
12-month-old child in a
standard child restraint
or less on the
passenger seat.
The system is malfunctioning.XMake sure there is nothing between seat cushion and child seat
and check installation of the child seat.
XMake sure no objects applying supplemental weight onto the
seat are present.
XIf the passenger front air bag off indicator lamp remains out,
have the system checked as soon as possible at an authorized
Mercedes-Benz Center. Do not transport a child on the
passenger seat until the system has been repaired.
XRead and observe messages in the multifunction display and
follow corrective steps (Y page 226).
GWarning!
If the 45 indicator lamp does not
illuminate or remains out with the weight of a
typical 12-month-old child in a standard child
restraint or less on the passenger seat, do not
transport a child on the passenger seat until
the system has been repaired.
Unlocking/locking manually
Unlocking the vehicle
If you cannot unlock the vehicle with the
SmartKey or with KEYLESS-GO, unlock the
driver’s door and the trunk using the
mechanical key.
The anti-theft alarm system will trigger when
you
Runlock the driver’s door or the trunk with
the mechanical key
and
Ropen the driver’s door or the trunk
To cancel the alarm, insert the SmartKey into
the starter switch.
Removing the mechanical key
SmartKey
SmartKey with KEYLESS-GO
XMove locking tab : in the direction of
arrow.
XSlide mechanical key ; out of the housing.Unlocking/locking manually267Practical hints230_AKB; 6; 22, en-USd2ureepe,Version: 2.11.8.12009-07-28T18:49:58+02:00 - Seite 267Z