fan MERCEDES-BENZ V-CLASS 2021 Owners Manual

PRE-S
PRE-S
AFE
AFE®
®
Syst
Syst em
em F
F
unction of PRE-S
unction of PRE-S AFE
AFE ®
®
(anticipat
(anticipat or
ory occupant pr
y occupant pr o-
o-
t
t ection)
ection) PRE-SAFE
®
can de tect cer tain hazardous situa-
tions and take pre-em ptive measures topro tect
th eve hicle occupants.
PRE-SAFE ®
can implement thefo llowing measures
independently of each other:
R Tightening the seat belts on the driver's seat
and co-driver seat.
R Closing the side windo ws.
R V
V ehicles wit
ehicles wit h a sliding sunr
h a sliding sunr oof:
oof:closing the slid-
ing sunroof.
R V
V ehicles wit
ehicles wit h memor
h memory function:
y function: adjustingthe
co-driver seat toa more favo urable seat posi-
tion.
* NO
NOTE
TEDamage caused byobjects in the
fo ot we ll or behind the seat The automatic adjustment of
the seat position
may result in damage tothe seat and/or the
object. #
Stow objects in a suitable place. R
R
e
ev
ver
er sing t
sing t he PRE-S
he PRE-S AFE
AFE®
®
syst
syst em measur
em measur es
es If an accident did not occur,
the pre-em ptive meas-
ures that we re ta ken are reve rsed.
Yo u will need tomake cer tain adjustments your-
self. #
Ifth e seat belt pre-tensioning is not reduced,
mo vethe seat backrest back slightl y.
The locking mechanism releases. A
A
ut
ut omatic measur
omatic measur es
esaTer
aTer an accident
an accident
Depending on the type and se verity of the acci-
dent, and depending on theve hicle's equipment,
th efo llowing measures can be implemented, for
ex ample:
R activating the hazard warning lights
R triggering an automatic emer gency call
(/ page 236)
R switching o. the engine
To restart theve hicle, switch the ignition o.
and switch it back on (/ page 136). Depend-
ing on the type and se verity of the accident, it may possible
that theve hicle can no lon ger be
star ted.
R switching o. the fuel supply
R unlocking theve hicle doors
R lowe ring the front side windo ws
R switching on the interior lighting Saf
Saf
el
ely tr
y tr anspor
anspor ting c
ting childr
hildren in t
en in t he v
he vehicle
ehicle Alw
ay
Alw ays observ
s observ e when c
e when c hildr
hildren ar
en ar e trav
e tr avelling in t
elling in t he
he
v
v ehicle
ehicle %
Always obser vethe saf ety no tesre leva nt to
th e situation. In doing so, you will be able to
identify possible risks and avoid dangers when
ch ildren are tr avelling in theve hicle
(/ page 39).
Be dilig
Be dilig ent
ent
Bear in mind that negligence when securing a child
in thech ild restraint system may ha veserious con-
sequences. Alw ays be dili gent and secure a child
carefully before each journe y.
Infants and children must ne ver tr avel sitting on
th e lap of a vehicle occupant.
To impr oveprotection forch ildren younger than 12
ye ars old or under 1.50 m in height, Mercedes-
Benz recommends you obser vethefo llowing infor-
mation:
R Always secure thech ild in a child restraint sys-
te m suitable forth is Mercedes-Benz vehicle.
R The child restraint system must be appropria te
to the age, weight and size of thech ild.
R The vehicle seat must be suitable for /tting a
ch ild restraint system (/ page 41).
Ac cident statistics show that children secured on
th ere ar seats are generally sa ferth an children
secured on the front seats. Forth is reason,
Mercedes-Benz st rongly advises that you /t a child
re straint system toare ar seat.
The g
The g ener
eneric t
ic ter
erm c
m c hild r
hild r es
es tr
traint syst
aint syst em
em
The generic term child restraint system is used in
th is set of Operating Instructions. A child restraint
system is, forex ample:
R a baby car seat
R are ar wa rd-facing child seat
R afo rw ard-facing child seat
R ach ild booster seat with a backrest and seat
belt guides 38
38
Occupant saf
ety

Displa
Displa
y messag
y messag es P
es P ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions #
Monitor the coolant temp erature display ?onthe inst rument
cluster. #
Wait until the engine has cooled down. #
Ensure that the air supply tothera diator is not obstructed. #
Avoiding high engine loads, drive on tothe nearest quali/ed spe-
cialist workshop. In doing so, ensu rethat the coolant temp erature
display remains below 120°C.
? *T
hefan mo tor is defective. #
Check the coolant temp erature display ?onthe inst rument
cluster.
If th e coolant temp erature is below 120°C, you can continue driving
to the nearest quali/ed specialist workshop.
Av oid high engine loads, e.g. driving on hilly roads or stop-and-go driv-
ing.
+ Top up coolant See Own-
er’s Manual *T
he coolant le vel is too lo w.
* N NO OTE
TE Engine damage due toinsu1cient coolant #
Avoid long journe yswith insu1cient coolant. #
Top up with coolant, following the no tes on coolant
(/ page 228).
If yo u frequently need to top up the coolant: #
Have the engine cooling system checked at a quali/ed specialist
wo rkshop.
¸
Replace air cleaner *T
he engine air /lter is dirty and must be replaced. #
Consult a quali/ed specialist workshop.
4 Check eng. oil lev. when
next refuelling *A
warning tone also sounds. The oil le vel in your vehicle has fallen to
th e minimum.
* N NOOTE
TE Engine damage caused bydriving with insu1cient
engine oil #
Avoid long journe yswith insu1cient engine oil. #
Check the oil le vel when next refuelling, at the latest
(/ page 226). #
If necessar y,top up the engine oil (/ page 227).
If engine oil frequently needs tobe topped up: #
Have the engine checked at a quali/ed specialist workshop. 296
296
Display messages and
warning and indicator lamps

V
V
ehicle
ehicle W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
Ð Po we r steering system
wa rning lamp *The
red po wer steering warning lamp is on while theve hicle is on. A
wa rning tone also sounds.
The po wer assistance forth e steering could be malfunctioning. You may
need tosteer mo reforc efull y. #
Carefully continue toaqu ali/ed specialist workshop and ha vethe
stee ring checked immediatel y. Engine
Engine
W
W
ar
ar ning/indicat
ning/indicat or lampP
or lam pP ossible causes/conseq
ossible causes/consequences and uences andM
MSolutions
Solutions
; Engine diagnostics warn-
ing lamp *The
yellow engine diagnostics warning lamp is on while theve hicle is
on.
There may be a malfunction in thefo llowing vehicle systems:
R Engine management
R Injection
R Exhaust system
R Ignition system (in vehicles with a petrol engine)
R Fuel system
This can cause the emissions limit values tobe exceeded and the
engine torun in eme rgency mode. #
Have theve hicle checked immediately at a quali/ed specialist work-
shop.
6
Fu elreser vewarning lamp *T
he yellow fuel reser vewarning lamp is on while theve hicle is on.
The fuel supply has dropped into there ser verange.
Ope ration of the auxiliary heating (stationary heater) is deactivated in
th ere ser verange. #
Refuel theve hicle.
?
Coolant warning lamp *The
red coolant warning lamp is on while theve hicle is running and the
coolant temp erature display is at the start of the scale.
The temp erature sensor forth e coolant temp erature display is defec-
tive.
The coolant temp erature is no longer being monitored. If the coolant is
to o hot, the engine may be damaged. #
Stop theve hicle immediately in accordance with the tra1c condi-
tions and switch it o.. Do not continue driving! #
Secure theve hicle against rolling away. #
Consult a quali/ed specialist workshop.
? Coolant warning lamp *T
he red coolant warning lamp is on while theve hicle is on.
The coolant le vel is too lo w.
If th e coolant le vel is cor rect, the air supply tothera diator may be
impaired or thera diator's electric fan may be faulty.
The coolant is too hot and the engine is not being adequately cooled. #
Pay attention tothe display messages. Display messages and
warning and indicator lamps
309 309