2017 MERCEDES-BENZ S-CLASS CABRIOLET fuel pressure

R
befor eembarkin gonalonger journey
R if operating condition schange, e.g. off-
ro ad driving #
Adjus tthe tyr epressur easn ecessar y. Driving wi
thtyr ep ressur ethat is tooh igh or too
lo wc an:
R Sho rten thes ervice lif eofthe tyres.
R Cause increased tyr edamage.
R Adverselya ffect driving characteristic sand
th us drivin gsafet y, e.g. due toaquaplaning. &
WARNING Risk of accident from repea‐
te dt yrep ressur edrop
If th et yrep ressur edrops repeatedl y,the
wheel, valveort yrem aybe damaged.
Insuf ficient tyr epressur ecan cause thet yres
to bur st. #
Inspect thet yref or signs of fore ign
objects. #
Chec kwhether thew heel or valveh as a
leak. #
Ifyo ua reunable torectify thed amage,
conta ctaq ualified specialis tworks hop. Information on
ther ecommende dtyrep ressure
fo rt he vehicle's factor y-fitted tyres can be found
on thet yrep ressur etable on thei nside of the
fuel filler flap (→ page388).
Use asuitable pressur egaug etoc heckthe tyre
pressure. The outer appearance of atyred oes
no tp ermit an yreliable conclusion about thet yre
pressure.
Ve hicles with atyrep ressur emonitoring sys‐
te m: youc an also checkt he tyr epressur eusing
th eo n-boar dcomputer.
Onl ycorrect tyr epressures whe nthe tyres are
cold. Conditions forc old tyres:
R The vehicle has been par kedw itht he tyres
out of direct sunlight foratl east thre eh ours.
R The vehicle has tr avelled less than 1.6k m.
Ar ise in thet yret emperatur eof10°Ci ncreases
th et yrep ressur ebya pprox.10k Pa(0.1b ar/ 1.
5p si).Tak et his int oaccount when checking
th et yrep ressur eofw armt yres. Ty
re pressur etable The tyr
epressure table is on thei nside of the
fuel filler flap. The tyr
epressur etable sho ws therecommended
tyr ep ressur efor all tyres appr ovedfor this vehi‐ 386
Wheels and tyres

cle
.The recommended tyr epressures apply for
cold tyres under various operating conditions,
i.e. loading and/or speed of thev ehicle.
If one or mor etyres izes precede atyrep res‐
sure, thet yrep ressur einformation following is
onl yvalid fort hose tyr esizes.
If th ep receding tyr esizes ar ecomplemented by
the + symbol, thet yrep ressur einformation
fo llowing sho wsalternativ etyrep ressures.
Thes etyrep ressures ma yimp rove your vehicle's
ri de comfort. Fuel consum ption ma ythen
increase slightly.
The load conditions "partially laden" and "fully
laden" ar edefined in thet able ford iffe re nt num‐
be rs of passenger sand amounts of luggage. The
actual number of seats ma ydiffe rf romt his.
Be sur etoalso obse rvet he following fur ther
re lated subjects:
R Notesont yrep ressur e(→pag e385) Ty
re pressur emonitoring sy stem Fu
nction of thet yrep ress urem onitoring sys‐
tem
The sy stem checks thet yrep ressur eand the
tyr etemperatur eofthe tyres fitted tothev ehicle
by means of atyrep ressu resensor.
Ne wt yrep ressur esensors, e.g. in winter tyres,
ar ea utomaticall ytaught-in thef irst tim etheya re
driven.
If th er eisas ubstantia lpressur elossorift he
tyr etemperatur eisexcessive, awarning will be
given:
R Viad ispla ymessages (→ page446).
R Viat he h warning lam pinthe instrument
clus ter( →pag e477).
It is thed rive r's responsibility tosetthe tyre
pressur etotherecommended cold tyr epressure
suitable fort he operating situation. Se tthe tyre
pressur efor cold tyres using atyrep ressu re
ga uge. No tethat thec orrect tyr epressur efor
th ec urrent operating situatio nmustfirst be
ta ught-in tothet yrep ressur emonitoring sys‐
te m. In mos
tcases, thet yrep ressur emonitoring sys‐
te mw illa utom atically updat ethe ne wreference
va lues af tery ou ha vechanged thet yrep ressure.
Yo uc an,h ow eve r,also updat ethe refere nce val‐
ues byrestartin gthe tyr epressur emonitoring
sy stem manuall y(→pag e390).
Sy stem limitations
The sy stem ma ybeimpaired or ma ynotfunction
in thef ollowing situations:
R Ifth et yrep ressur eiss etincor rectly.
R Ifth er eisas udden pressur eloss caused, for
ex ample, byaforeign object penetratin gthe
tyre.
R Ifth er eisam alfunction caused byano ther
ra dio signal source.
Mak esuretoo bservethef ollowing fur ther rela‐
te ds ubjec t:
R Notesont yrep ressur e(→pag e385)
Checking thet yrep ress urew itht he tyre
pressur emonitoring sy stem
Requ irement:
R The ignition is switched on. Wheels and tyres
387

È
.................................................... 439
_Example: Front lef tseat back‐
re st notloc ked ................................... 456
bExample: Lef tdipped beam ........ 459
Fa ult Driv eatmax.80k m/h .............. .435
Fr ont-passenger airbag disabled See
Owner's Manual ..................................4 32
Fr ont-passenger airbag enabled See
Owner's Manual ................................... 431
!inoperativ eSee Owner's Man‐
ual ........................................................ 417
÷ inope rativ eS ee Owner' sMan‐
ual ....................................................... .419
T inope rativ eS ee Owner' sMan‐
ual ....................................................... 421
GInope rative ................................. .426
bIntelligent Ligh tSystemi noper‐
ative ....................................................4 60
ÂKe ynotdetected (red displ ay
messa ge).............................................4 49ÂKe
ynotdetected (whit edispl ay
messa ge).............................................4 49
Le tfresh airi ntot he vehicle interior!
Air conditioningm alf.Visit workshop .. 453
Limiter inoperative .............................. 439
Limiter passive .................................... 439
Lo we ring ............................................. 440
A Malfunction Consult workshop ... 459
bMalfunction See Owner's Man‐
ual .......................................................4 60
max. spee d35km/h.......................... 440
ð Maximum speed exceeded ..........4 40
Np ermanently activ eRiskofv ehicle
ro lling .................................................. 450
ëOff .............................................. .438
Onl yselect Park (P) when vehicle is
st ationary ............................................ 450
K Open/close topc omple tely ....... 458
!Pa rking brak eSee Owner's
Manual ................................................ 423 ÂPlace
thek eyinthem arked
space See Owner's Manual .................449
PRE-SAFE inoperativ eSee Owner's
Manual ................................................ 427
Ra dar sensor sdirty See Owner's
Manual ........................................ 428, 429
hRe ctify tyrepressure ................... 445
! Release parkin gbrake ................ 422
Re place keyS eeOwner' sManual ........ 448
 Replace key................................ .448
8Re servefuel le vel........................ 443
6 Restra int sys. malfunction Con‐
sult workshop ...................................... 430
Re versing no tposs. Consult work‐
shop ....................................................4 51
Risk of vehicle rolling Driver door
open and transmission no tinP...........450
Speed limi t(winter tyres) XXX km/h ...440
# Starte ngine See Owner' sMan‐
ual ...................................................... .442 Index
487