run flat MERCEDES-BENZ G-Class 2017 W463 Owner's Manual

Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi-cle occupant scomin ginto contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces to which vehicle occupant sare subjected during
an accident.
The restraint system comprises:
RSeat belt system
RAir bags
RChild restraint system
RChild seat securings ystems
The component softhe restraint system work in
conjunction with each other .They can only
deploy their protective function if, at all times, all
vehicle occupants:
Rhave fastened their seat belts correctly
(Ypage 41)
Rhave the seat and head restraint adjusted
properly (Ypage 74)
As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position (
Ypage 74).
You also have to make sure that an air bag can
inflate properly if deployed (
Ypage 43).
An air bag supplement sacorrectly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupant sinthe event of an accident. For exam-
ple, if, in the event of an accident, the protection
offered by the seat belt is sufficient, the air bags
are not deployed. When an accidento ccurs,only
the air bags that increase protection in that par- ticular accidents ituation are deployed. How-
ever, seat belts and air bags generally do not
protec tagainst objects penetratin gthe vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" (
Ypage 46).
See "Children in the vehicle" for information on
children travelin gwith you in the vehicle as well
as on child restraint systems (
Ypage 49).
Important safetyn otes
GWARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an
accidentort rigger unexpectedly, for example.
This poses an increased risk of injur yoreven
fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
component sortheir software.
If it is necessary to modify component softhe
restraint system to accommodate aperson
with disabilities, contact an authorized
Mercedes-Benz Center for details. USA only:
for further information contact our Customer
Assistance Center at 1-800-FOR-MERCedes
(1‑ 800‑367‑ 6372).
Mercedes-Benz recommends that you only use
driving aids which have been approved specifi-
cally for your vehicle by Mercedes-Benz.
Restraint system warning lamp
The function softhe restraint system are
checked after the ignition is switched on and at
regular intervals while the engin eisrunning.
Therefore, malfunctions can be detected in
good time.
The 6 restraint system warning lamp on the
instrument cluster lights up when the ignition is
switched on. It goes out no later than afew sec-
onds after the vehicle is started. The compo-
nents of the restraint system are in operational
readiness.
Am alfunction has occurred if the 6restraint
system warning lamp:
Rdoes not light up after the ignition is switched
on
Rdoes not go out after afew seconds with the
engin erunning
Rlights up again while the engin eisrunning
GWARNING
If the restraint system is malfunctioning,
restraint system component smay be trig-
38Occupant safety
Safety

Display messagesPossible causes/consequences andMSolutions
h
TirePressure Warn‐ing,TireM alfunc‐tion
The tire pressur einoneor mor etires has dropped suddenly. The whee l
position is shown on th emultifunction display.
Aw arning tone also sounds.
GWARNIN G
Drivin gwithaf lat tire poses ariskoft hefollowin ghazards :
Raflat tire affects th eabilit ytos teer or brak ethe vehicl e
Ryou could lose control of th evehicl e
Rcontinued drivin gwithaf lat tire will caus eexces sive heat build-up
and possibl yafire
There is ariskofana ccident.
XStop thevehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sasyou do so.
XSecur ethe vehicl eagainst rollin gaway (Ypage 120).
XIf there is aflat tire, inspec tthe tires (Ypage 240).
h
Check Tir ePressure
The tire pressur einoneor mor etires has dropped significantly. The
whee lposition is shown on th emultifunction display.
Aw arning tone also sounds.
GWARNIN G
Tir ep ressures that are to olow pos ethe followin ghazards :
Rthey may burst, especially as th eload and vehicl espeed increase.
Rthey may wear excessivel yand/o runevenly, whic hmay greatl y
impair tire traction .
Rthed rivin gcharacteristics ,aswell as steering and braking ,may be
greatl yimpaire d
There is ariskofana ccident.
XStop thevehicl ewithout making any sudden steering or braking
maneuvers .Pay attention to th etraffic condition sasyou do so.
XSecur ethe vehicl eagainst rollin gaway (Ypage 120).
XIf there is aflat tire, inspec tthe tires (Ypage 240).
XChec kthe tire pressur e(Ypage 257).
XIf necessary, correc tthe tire pressure.
h
PleaseCorrec tTirePressure
The tire pressur eistoolow in at least on eofthetires ,ort hetire
pressur edifference between th ewheels is to ogreat.
XChec kthe tire pressures at th enexto pportunity (Ypage 257).
XIf necessary, correc tthe tire pressure.
Display messages185
On-boardc omputer andd isplays
Z

Important safety notes
GWARNING
If wheels and tires of th ewrong siz eare used,
th ew hee lbrakes or suspension component s
may be damaged. Ther eisariskofana cci-
dent.
Always replace wheels and tires wit hthose
that fulfill th especification softheoriginal
part .
When replacing wheels, mak esuretou se the
correct:
Rdesignation
Rmodel
When replacing tires ,makes uretou se the
correct:
Rdesignation
Rmanufacturer
Rmodel
GWarning
Af lat tire severely impairs th edriving ,steer -
ing and braking characteristics of th evehicle.
Ther eisar iskofana ccident.
do no tdrivew ithaf lat tire. Immediately
replace th eflat tire wit hyour spar ewheel, or
consult aqualified specialist workshop.
Accessories that are no tapprove dfor your vehi-
cle by Mercedes-Ben zorare notbein gused cor-
rectl ycan impair th eoperating safety.
Before purchasing and usin gnon-ap proved
accessories, visit aqualified specialist work-
sho pand ask about :
Rsuitability
Rlegal stipulation s
Rfactory recommendation s
Further information regarding wheels and tires
can be foun dunder "Wheel/tire combinations"
(
Ypage 273).
You can ask for information regarding permitte d
wheel/tire combination satanauthorized
Mercedes-Ben zCenter. Information on tire pressur
ecan be found:
Ron th eTirea nd Loading Information placard
on th eB-pillar on th edriver' sside
(
Ypage 260)
Rin th etirep ressur etable in th efuel filler flap
(Ypage 119)
Runder "Tir epressure" (Ypage 254)
Operation
Information on driving
Checkthe tire pressur ewhen th evehicl eis
heavily laden and adjust prio rtoatrip.
While driving ,pay attention to vibrations, noises
and unusual handlin gcharacteristics ,e.g.p ull-
ing to on eside .This may indicat ethatthe
wheels or tires are damaged. If you suspec ttha t
at ireisd efective, reduce your spee dimmedi-
ately. Stop th evehicl eass oonasp ossible to
chec kthe wheels and tires for damage. Hidden
tire damag ecould also be causing th eunusual
handlin gcharacteristics .Ifyou fin dnos ignsof
damage, hav ethe tires and wheels checke data
qualified specialist workshop.
When parking your vehicle, mak esuret hatthe
tires do no tget deformed by th ecurboro ther
obstacles. If they canno tbeavoided, driv eover
obstacles suc hascurbs slowly and at an obtuse
angle. You could otherwise damag ethe whee l
rim sand tires .
Regularchecking of wheels and tires
GWARNIN G
Damaged tires can caus etirei nflation pres-
sur eloss .Asar esult,you could lose control of
your vehicle. Ther eisariskofa ccident.
Chec kthe tires regularly for sign sofdamage
and replace any damaged tires immediately.
Chec kwheels and tires for damag eatleast once
am onth .Chec kwheels and tires after driving
off-road or on roug hroads. Damaged wheels
can caus ealoss of tire pressure.
Pay particular attention to damag esucha s:
Rcut sint hetires
Rpunctures in th etires
Rtears in th etires
Operation251
Wheels and tires
Z

!Check the snow chains for damage before
mounting them. Damaged or worn snow
chains may snap and damage the following
components:
Rwheel
Rwheel housing
Rwheel suspension
For this reason, you must use only snow
chains that are free of defects. Observe the
manufacturer's mounting instructions.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been speciallya pproved for your vehicle by
Mercedes-Benz,ora re ofacorresponding
standard of quality. For more information,
please contact aqualified specialist workshop.
If you intend to mount snow chains, please bear
the following points in mind:
RSnow chains may not be mounted on all
wheel/tire combinations. Observe the infor-
mation regarding permitted wheel/tire com-
binations (
Ypage 273).
RInstall the snow chains on all four wheels for
maximum tractive power and driving stability.
If you only have two snow chains, install these
as ap air on the rear wheels. The vehicle then
remains more stable under braking.
ROnly use snow chains when driving on roads
completely covered by snow. Remove the
snow chains as soon as possible when you
come to aroad that is not snow-covered.
RLocal regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains.
RDo not exceed the maximum permissible
speed of 30 mph (50 km/h).
You may wish to deactivate ESP
®when pulling
awayw ith snow chains installed (Ypage 59).
You can thereby allow the wheels to spin in a
controlled manner, achieving an increased driv- ing force (cutting action).
Tire pressure
Tire pressure specifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is arisk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning along journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
The data on the Tire and Loading Information
placard and tire pressure table shown here are
examples. Tire pressure specifications are vehi-
cle-specific and may deviate from the data
shown here. The tire pressure specifications
that are valid for your vehicle can be found on
the Tire and Loading Information placard and
tire pressure table on the vehicle.
General notes
The recommended tire pressures for the tires
mounted at the factory can be found on the
labelsd escribed here.
Operation with atrailer: the applicable value
for the rear axle is the maximum tire pressure
value stated in the table inside the fuel filler flap.
Further information on tire pressures can be
obtained at aqualified specialist workshop.
254Tire pressure
Wheels and tires

Checking thetirep ressures
Important safety notes
Observ ethe note sont irep ressure
(Ypage 254).
Information on air pressure for th etires on your
vehicle can be found:
Ron th evehicle's Tire and Loading Information
placard on th eB-pillar
Rin th etirep ressure table in th efuel fille rflap
(Ypage 119)
Runde r"Tire pressure "(Ypage 254)
Checking tir epressures manually
To determine and set th ecorrec ttirep ressure,
procee dasfollows:
XRemove th evalvec ap of th etiret hatistob e
checked.
XPress th etirep ressure gage securely onto the
valve.
XRead th etirep ressure and compare it to the
recommended value on th eTire and Loading
Information placard or th etirep ressure table
(
Ypage 254).
XIf th etirep ressure is to olow, increas ethe tire
pressure to th erecommended value.
XIf th etirep ressure is to ohigh,r elease air. To
do so, pres sdown th emetal pin in th evalve,
usingt hetip of apen for example .Then check
th et irep ressure again usingt hetirep ressure
checker.
XScrew th evalvec ap onto th evalve.
XRepeat these steps for th eother tires.
Tir ep ressure monitor
General notes
If at irep ressure monito risinstalled, th evehi-
cle's wheelsh ave sensorsthatm onito rthe tire
pressure sinall four tires. The tir epressure mon-
ito rw arn syou if th epressure drops in oneo r
mor eoft hetires. The tir epressure monito ronly
functionsift hecorrespondings ensorsare
installed in all wheels.
Information on tir epressure sisdisplayed in the
multifunction display. The curren ttirep ressure
of each wheel is shown in the Serv.
menuafter
driving for afew minutes.
Information on th emessage display can be
foun dint he"Checkin gthe tirep ressure elec-
tronically" sectio n(
Ypage 258).
Important safety notes
GWARNING
Eac htire, includingt hespare( if provided),
should be checked at least once amonth
when col dand inflate dtothepressure rec-
ommended by th evehicle manufacturer on
th eT ire and Loading Information placard on
th ed river'sd oor B-pillar or th etirep ressure
label on th einside of th efuel fille rflap. If your
vehicle has tires of adifferent sizet hant he
sizei ndicated on th eTire and Loading Infor-
mation placard or th etirep ressure label, you
should determine th eproper tir epressure for
those tires.
As an added safety feature, your vehicle has
been equipped withat irep ressure monitoring
system (TPMS) that illuminate salow tir epres-
sure telltale when oneorm oreofy our tires
are significantly underinflated. Accordingly,
when th elow tir epressure telltale illuminates,
you should stop and check your tires as soon
as possible, and inflate them to th eproper
pressure .Drivin gonas ignificantly underin-
flated tir ecauses th etiretoo verheat and can
lead to tir efailure. Underinflation also
reduces fuel efficienc yand tir etread life ,and
may affect th evehicle's handlinga nd stop-
pinga bility.
Pleasen otet hatthe TPMS is no tasubstitute
for proper tir emaintenance, and it is th edriv-
er'sr esponsibility to maintain correc ttire
pressure ,evenifu nderinflation has not
reached thel evelt otrigger illuminat
ionoft he
TPMS low tir epressure telltale.
USAo nly:
Tir ep ressure257
Wheels and tires
Z