Stowage
andfeatur es...................... 251
Loading guidelines...............................2 51
Stowag earea s....... ..............................251
Featu res....... ....... ................................ 258 Mainte
nanceand care ......................274
Engine compartment ........................... 274
ASSYST PLUS......................................278
Ca re....... .............. ................................279 Breakdow
nassi stanc e....... .............. 287
Where willIfind...? ..............................287
Flat tire....... ......................................... 288
Battery (vehicle)....... ........................... 293
Ju mp-starti ng....... ................................296
Tow ingand tow-starti ng....... ...............299
Fuse s....... ............................................302 Whee
lsand tires ...............................305
Importa ntsafe tynotes ........................305
Opera tion............................................305
Winter operation....... ........................... 307
Tire press ure....... ................................ 308
Load ingthe vehi cle....... .......................317
All abo utwhe elsand tires ................... 320
Cha nging awhe el....... ......................... 326
Whee land tirecombi nations .............. .330
Emergency sparewhe el....... ................331 Techn
ical data ................................... 333
Informati onrega rding technical data
....... ...................................................... 333
Vehi cleelectronics ..............................333
Identifi cationplates ....... ......................334
Service products andfilling capa ci-
ties ....... ............................................... 335
Vehi cledata ......................................... 341
Vehi cledata foroff-roa ddrivi ng....... ...342 Co
nten ts
3
ESP
®
(Electr onicStabili tyPro-
gra m)
AM Gmen u(on -board com pute r)...2 01
Cha racteri stics................................. 64
Deactiva ting/activa ting(button
in Merced es-AMG vehicles) ............. 65
Deactiva ting/activa ting(excep t
Merced es‑AMG vehicles) .................64
Deactiva ting/activa ting(on-
boa rdcompu ter,except
Merced es-AMG vehicles) ...............197
Displ aymessa ge....... ..................... 205
Function/notes ................................63
Gene ralnotes .................................. 63
Importa ntsafe tyinforma tion........... 64
Trai lerstabi lization ........................... 66
Warni nglamp ....... .......................... 236
ETS/ 4ETS (Elec tronic Traction
Syste m)....... ......................................... 64
Exhaus t
see Exhaus tpip e
Exhaus tche ck....... ............................ 149
Exhaus tpipe
Cl eani ng....... ....... ........................... 284
Exte riorlighting
Cl eani ng....... .................................. 283
see Ligh ts
Exte riormirrors
Adjusting ......................................... 98
Dippi ng(automa tic)....... .................. 99
Fold inginwhe nlocking (on-
boa rdcompu ter)....... ..................... 200
Fold ingin/ou t(a utoma tically)......... 99
Fol ding in/o ut(electrica lly) ............. 99
Ou tof pos ition (tro ublesho oting )..... 99
Setting <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011> 99
Stori ngsetti ngs(memory func-
tion) <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 101
Stori ngthe parking position .......... 100
Ey eg las sesco mpartmen t<0011001100110011001100110011001100110011001100110011001100110011
0011[ 252 F
Fav orites
Ove rview <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 245
Fi ller cap
see Refue ling Fl
at tire
MOExte ndedtires<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011[ 289
Pre paring thevehicle<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011[ 288
TIR EFIT kit<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 290
see Emerg encysparewh eel
Fl ex ible Fue lve hic les<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011[ 336
Fl oo rmats <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011> 273
Fo glamps
Swi tching on/off<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011[ 103
Fre quen cies
Mob ile pho ne<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011> 333
Tw o-w ayrad io<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011[ 333
Fro ntfog lamps
Disp laymes sage <0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 216
Swi tching on/off<0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011[ 103
Fro nt-pas seng er seat
Fol ding the backres tforw ard/
ba ck <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011001100110011> 253
Fue l
Add itives <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 337
Co nsu mpti onstatisti cs<0011001100110011001100110011001100110011001100110011001100110011
00110011[ 192
Disp laying the current consu mp-
tion <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 192
Disp laying the rang e<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011[ 192
Drivi ngtips<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011> 149
E10 <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011> 336
Fue lga ug e<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011> 32
Gra de(gas oline )<0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011001100110011[ 336
Imp orta ntsafety notes <0011001100110011001100110011001100110011001100110011001100110011
00110011[ 336
Pro blem (ma lfunction) <0011001100110011001100110011001100110011001100110011001100110011
001100110011[ 145
Re fue ling <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 142
Ta nk content/re servefue l............. 336
Fue lfil lerflap
Ope ning <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011001100110011> 144
Fue lle ve l
Ca lling upthe rang e(o n-boa rd
comp uter)<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
001100110011001100110011> 192
Fue ltank
Ca pacity <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011> 336
Pro blem (ma lfunction) <0011001100110011001100110011001100110011001100110011001100110011
001100110011[ 145
Fus es
All oca tion chart<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011[ 303
Befo recha nging <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011[ 302
Fus ebox inthe engi necomp art-
ment <0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
00110011001100110011001100110011001100110011001100110011> 303
Fus ebox inthe front-p asseng er
foo twe ll<0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011001100110011001100110011
0011001100110011001100110011001100110011> 303
Imp orta ntsafety notes <0011001100110011001100110011001100110011001100110011001100110011
00110011[ 302 In
dex
11
Wheel
chock...... ................................327
Wheel s
Cha nging awhe el...... ....................326
Che cking ........................................ 305
Cl eani ng...... ...... ............................. 282
Emergency sparewhe el...... ........... 331
Important safetynotes .................. 305
Informatio non drivi ng...... ..............305
<002C00510057004800550046004B00440051004A004C0051004A00120046004B
0044[ nging................ 326
Mou nting anew whee l...... .............329
Rem oving awhe el....... ................... 329
Storing ...........................................327
Tig htening torque....... .................... 330
Whee lsize/tire size.......................330
Whee lsand tires
Cha nging awhe el....... ................... 327
Windo wcurtain airbag
Displ aymessa ge....... ..................... 212
Opera tion......................................... 47
Windo ws
see Side windows
Windsh ield
Defrosting ......................................120
Windsh ieldwashe rsyste m
Addi ngwasher fluid....... ................277
Importa ntsafe tynotes .................. 339
Windsh ieldwi pers
Displ aymessa ge....... ..................... 229
Prob lem(malfunction) ................... 112
Rea rwi ndow wiper ....... .................110
Rep lacing thewiper blades ....... ..... 110
Switchi ngon/off ........................... 109
Winte rdrivin g
Slip pery road surfaces....... ............ 153
Snow chains....... ........................... 308
Winte roperatio n
Gene ralnotes ................................ 307
Winte rtires
M+S tires.......................................307
Wiper blades
Cl eani ng....... .................................. 283
Importa ntsafe tynotes .................. 110
Rep lacing (rearwi ndow) ................112
Woo dentrim (clean inginstruc-
tion s)....... ...........................................285
Worksho p
see Qualified speci alist worksh op Z
ZONE function
Switchi ngon/off ........................... 120 In
dex
23
(tire
swith run-flatcharac teristic s)"sect ion
(Y page 289).
R Only mount tiresof the corr ectsize ontothe
wheels.
R Break innew tiresat moderat espeeds for
the first 60miles (100 km). Thenew tires
only reach theirfullperfor manceafter this
distan ce.
R Do not drive withtireswhich havetoolittle
tre ad depth. Thissignif icantlyreduces the
trac tion onwet roads (hydroplanin g).
R Replace thetiresafter sixyears atthe lat-
est, regardles sof wear.
Observ ethe noteson the emerge ncyspare
wheel (Ypage 331). MOExt
ended tires (tir eswith run-fla t
pr opert ies)
With MOExtended tires(tire swith runflat
charac teristic s),you can continue todrive your
vehic leeven ifther eis atot alloss ofpressur e
in one ormore tires.
MOE xtended tiresmay onlybeused incon -
jun ction with anact ivated tirepressur eloss
warnin gsystem (Canada only)ortire pressur e
mon itor(USA only)andonly onwheels specifi-
cally testedbyMerc edes-B enz.
Not eson drivin gwith MOExtended tireswith a
flat tire (Ypage 289).
Vehicles equipped withMOExtended tiresare
not equipped withaTIREF ITkit atthe factory.
It is ther efore recommen dedthat youaddition -
ally equip yourvehic lewith aTIREF ITkit ifyou
mount tiresthat donot featur erun- flatcharac -
ter istic s,e.g. wintertire s.ATIREF ITkit may be
obtain edfrom aqualified specialist workshop. Wint
eropera tion Genera
lnotes
Have yourvehic lewint er-proof edataqualified
specialist workshopatthe onset ofwint er.
Observ ethe notesinthe "Changing awheel"
sect ion(Ypage 326). Driving
withsummer tires
At tem peratur esbelow 45‡(+7†), summer
tire slose elastic ityand therefore traction and
brakin gpower. Change thetireson your vehi-
cle toM+S tires.Using summer tiresat very
cold temperatur escould cause crackstoform ,
ther eby damaging thetiresperman ently.
Merc edes-B enzcann otaccept responsibility
for this type ofdamage. G
WARN
ING
Damaged tirescan cause tireinflat ionpres-
sure loss. Asaresult ,you could losecontrol
of your vehic le.There isarisk ofacciden t.
Check thetiresregularly forsigns ofdam-
age and replace anydamaged tiresimmedi-
ately. M+S
tires G
WARN
ING
M+S tireswith atire tread depth ofless than
00CF in(4 mm) arenot suitable foruse inwin-
ter and donot provide sufficienttraction.
There isarisk ofan acciden t.
M+S tireswith atre ad depth ofless than 00CF
in (4 mm) must bereplaced immediat ely.
At tem peratur esbelow 45‡(+7 †), use win-
ter tiresor all-season tires.Bot htypes oftire
are ident ifiedbythe M+S marking.
Only wintertire sbearing the004D snowf lake
symbol inaddition tothe M+S markingprovide
the best possible gripinwint ryroad condi-
tion s.Only thesetire swill allow drivingsafet y
system ssuch asABSand ESP®
to func tion
optim allyinwint er.These tireshave been
developed specificallyfordrivin gin snow.
Use M+S tiresof the same make andtread on
all wheels tomaint ainsafe handlin gcharac ter-
istic s.
Always observethe maxim umpermiss ible
speed specifiedforthe M+S tiresyou have
mount ed. Wint
eropera tion
307Wheels andtires Z
When
youhave mount edthe M+S tires:
X Check thetire pressures (Ypage 308).
X Restart thetire pressure monitor(USA only)
(Y page 315).
X Restart thetire pressure losswarning sys-
tem (Canada) (Ypage 312) Snow
chains G
WARNIN
G
If snow chains aremount edon the rear
wheels, thesnow chains couldcause abra-
sion tothe vehicle bodyortochassis com-
ponen ts.This could cause damage tothe
vehicle orthe tires. There isarisk ofan
accident .
To avoid hazardous situations:
R never mount snowchains onthe rear
wheels
R only mount snowchains inpairs onthe
fron twheels.
! On
some tiresizes there isnot enough
space forsnow chains. Toavoid damage to
the vehicle ortires, observe the"Wheel and
tire combin ations" sectionunder "Tiresand
wheels".
For safety reasons, Mercedes- Benzrecom-
mends thatyouonly usesnow chains that
have been specially approved foryour vehicle
by Mercedes- Benz,or are ofacorr esponding
standard ofquality. Formore inform ation,
please contactaqualified specialist workshop.
If you inten dto mount snowchains, please
bear thefollowing pointsinmind:
R Sno wchains maynotbemount edon all
wheel/tire combinations.Permissible
wheel-tire combinations(Ypage 330).
R Only usesnow chains whendriving onroads
complet elycovered bysnow. Remove the
snow chains assoon aspossible whenyou
come toaroad thatisnot snow-c overed.
R Local regulations mayrestrictthe use of
snow chains. Observe theappropriate regu-
lations ifyou wish tomount snowchains. R
Do not exceed themaximum permissible
speed of30mph (50km/ h).
R Ifsnow chains areinstalled, youcann otuse
Act ive Parking Assist(Ypage 176).
You may wish todeactivat eES P®
when pulling
away withsnow chains installed .This allows
the wheels tospin inacont rolled manner,ach-
ieving increased propulsive force(cutt ing
action ).
R Deact ivateESP®
(all vehicles except
Mercedes- AMGvehicles) (Ypage 64)
R Deact ivateESP®
(Mercedes- AMGvehicles)
(Y page 65)
Inf ormation aboutdriving withanemergen cy
spare wheel (Ypage 331). Tir
epr essure Tir
epr essure specifications
Impor tantsafety notes G
WARNIN
G
Underin flatedoroverinf latedtirespose the
following risks:
R the tires mayburst, especially asthe load
and vehicle speedincrease.
R the tires maywear exces sively and/or
unevenly, whichmaygreatly impairtire
trac tion.
R the driving charact eristics,as well as
steerin gand braking, maybegreatly
impaired.
There isarisk ofan accident .
Follow recomm endedtireinflation pressures
and check thepressure ofall the tires
including thespare wheel:
R mont hly,atleast
R ifthe load changes
R before beginnin galong journ ey
R under differen toperating conditions,e.g.
off- road driving
If neces sary,correctthe tire pressure.
i The
data onthe Tire andLoading Informa-
tion placard andtirepressure tableshown
here areexamples. Tirepressure specifica- 308
Tir
epr essureWheels andtires
tio
ns areveh icle-s pecificand mayde via te
fro mthe data sho wnhere. The tirepressu re
sp eci ficati ons thatar eva lid for your veh icle
can befou ndonthe Tire and Loading Info r-
ma tionplaca rdand tirepressu retab leon
the vehicle.
Ge neral notes The
reco mme ndedtire pressu res forthe tires
mou nted atthe factory canbefou ndonthe
la be lsde scri bedhe re.
Ope ratio nwi th an eme rgencyspare wheel:
inf orm ation on opera tionwi th an eme rgency
sp arewh eelcan befou ndinthe genera lnote s
in the "Em ergency sparewh eel"se ctio n
(Y page 330 ).
Fur therinf orm ation on tire pressu res can be
ob tained ataqu alifi ed speci alistwo rksh op.
Tire andLoadin gIn fo rmatio nplac ard 0043
Recomm endedtire pressu res
The Tire and Loading Info rma tionplaca rdison
the B-pi llar on the driver 'sside (Ypage 317 ).
The Tire and Loading Info rma tionplaca rdcon-
tai ns the reco mme ndedtire pressu res forcold
tire s.The reco mme ndedtire pressu res are
va lid for the maxim um permi ssible load and up
to the maxim um permi ssible veh iclesp ee d.
Tire pres sure table The
tirepressu retab leison the inside of the
fu el fillerfla p. Itsho wsthe tire pressu refor all
tire spe rmi tted atthe factory forthisveh icle;
se eillu stra tion(e xam ple) . Th
etire pressu retab leconta insthe recom-
mend edpre ssu res forcoldtire sfor vario us
op era ting cond itions ,i.e .di ffe ringload and
sp ee dcond itions .
If atire size pre ced esatire pressu re,the fol-
lo wi ng tire pressu reinform ation isonl yva lid
for thattire size; seeillu stra tion(e xam ple) . Th
eload cond itions "partia lly la de n" and "ful ly
la de n" arede fin ed inthe tablefor diffe rent
num bers of occu pants and amounts oflug-
ga ge .Th eactu alnum berof seats maydi ffe r. Some
tirepressu retab lessho wonl ythe rim
di am ete rsins tea dof the fulltire size, e.g.R18 .
Ri m diam ete ris pa rtof the tire size and canbe
fou ndonthe tire side wa ll(Y page 321 ). Tire
pres sure
309Whe elsand tires Z
If
the tire pressu reshave been settothe lowe r
valu esfor lighter loadsand/or lowerroad
speed s,the pressu resshoul dbe reset tothe
higher values:
R ifyou want todrive withanincreased load
and/or
R ifyou want todrive athigher speeds
i The
tirepressu resforincreased loads
and/or higherroadspeed s,shown inthe
tire pressu retable, mayhave anegative
effect ondriving comfort.
If the tire pressu reisnot setcorrectly, thiscan
lea dto an excessive build-up ofheat anda
sudd enloss ofpressu re.
For more information, contactaqua lifiedspe-
ciali stworkshop. Important
notesontire pressure G
WARNING
If the tire pressu redrops repeatedly,the
wheel ,valve ortire may bedama ged.Tire
pressu rethat istoo low may resul tin atire
blow -out. There isarisk ofan accident.
R Check thetire forforeign objects.
R Check whether thewheel islosing airor
the valve islea king.
If you areunabl eto rectify thedama ge,con-
tact aqua lifiedspecia listworkshop. G
WARNING
If you fitunsui table accessorie sonto tire
valves ,the tire valves maybeoverloa ded
and malfu nction, whichcancause tirepres-
sure loss. Duetotheir desig n,retrofitted tire
pressu remonitors keepthetire valve open.
This canalso resul tin tire pressu reloss.
There isarisk ofan accident.
Only screw thestandard valvecaporother
valve capsappro vedbyMercedes-Benz for
you rvehicle ontothetire valve.
Use asuita blepressu regau getocheck the
tire pressu re.The outer appearance ofatire
does notpermit anyrelia bleconclusion about
the tire pressu re.On vehicle sequi pped with
the electronic tirepressu remonitor, thetire pressu
recan bechecked inthe on-board com-
puter.
The tiretemperature andpressu reincrease
when thevehicle isin motion. Thisisdepend-
ent onthe driving speedandtheload .
Therefore, youshoul donly correct tirepres-
sures whenthetires arecold.
The tires arecold:
R ifthe vehicle hasbeen parked withthetires
out ofdirect sunlightfor atlea stthree hours
and
R ifthe vehicle hasbeen driven lessthan
1 mile (1.6km)
The tiretemperature changesdependingon
the outsid etemperature ,the vehicle speed
and thetire load .If the tire temperature
changes by18 ‡(10 †), thetire pressu re
changes byappro ximately 10kPa (0.1 bar/
1.5 psi).Take thisinto account whenchecking
the pressu reofwarm tires.Onlycorrect the
tire pressu reifit is too low forthe current
opera tingconditions. Ifyou check thetire
pressu rewhen thetires arewarm, theresul t-
ing valu ewil lbe highe rthan ifthe tires were
cold. Thisisnormal. Donot reduce thetire
pressu reto the valu especifie dfor cold tires.
The tirepressu rewou ldotherwise betoo low.
Observe therecommended tirepressu resfor
cold tires:
R on the Tire andLoadi ngInformation placard
on the B-pilla ron the driver's side
R in the tire pressu retable inthe fuel fillerflap
(Y page 144) Underinfl
atedoroverin flated tires
Underinfl atedtires G
WARNING
Tires withpressu rethat istoo low can over-
heat andburst asaconsequence. Inaddi -
tion, theyalsosuffer fromexcessive and/or
irregu larwea r,which canseverel yimpa irthe
braking propertie sand thedriving character-
istics. Thereisarisk ofan accident.
Avoid tirepressu resthat aretoo low inall
the tires, includi ngthe spare wheel. 310
Tire
pressureWheel sand tires
Underinflated
tiresmay:
R overheat, leadingtotire defects
R adversely affecthandling
R wear excessively and/orunevenly
R have anadverse effectonfuel consumption
Overinflated tires G
WARNING
Tires withexcessively highpressure can
burst because theyaredamage dmore eas-
ily by road debris, potholes etc.Inaddition,
they alsosuffer fromirregula rwear, which
can severely impairthebraking properties
and thedriving characteristics. Thereisa
risk ofan accident.
Avoid tirepressures thataretoo high inall
the tires, including thespare wheel.
Overinflated tiresmay:
R increase thebraking distance
R adversely affecthandling
R wear excessively and/orunevenly
R have anadverse effectonride comfort
R be more susceptible todamage
Maximum tirepressures 0043
Example: maximum permissibletire pres-
sure
Never exceed themaximum permissibletire
inflation pressure. Alwaysobserve therecom-
mended tirepressure foryour vehicle when
adjusting thetire pressure (Ypage 308).
i The
actual valuesfor tires arevehicle-spe-
cific andmay deviate fromthevalue sin the
illu stration. Checki
ngthe tire pressures
Importa ntsafety notes The
tirepressure monitordoesnotwarn you
of:
R incorrect lyset tire pressure
R sudden lossoftire pressure, e.g.from afor-
eign object thathaspenetrated thetire
Observe thenotes ontire pressure
(Y page 308).
Information onair pressure forthe tires on
your vehicle canbefound:
R on the vehicle's TireandLoading Informa-
tion placard onthe B-pillar
R in the tire pressure tableinthe fuel filler flap
(Y page 144)
R in the "Tire pressure" section
Checki ngtire pressures manually To
determine andsetthe correct tirepressure,
proceed asfollows:
X Remove thevalve capofthe tire that isto
be checked.
X Press thetire pressure gaugesecurely onto
the valve.
X Read thetire pressure andcompare itto the
recommended valueonthe Tire andLoading
Information placardorthe tire pressure
table (Ypage 308).
X Ifthe tire pressure istoo low, increase the
tire pressure tothe recommended value.
X Ifthe tire pressure istoo high, release air.
To do so, press downthemetal pininthe
valve, usingthetipofapen forexample.
Then check thetire pressure againusing the
tire pressure checker.
X Screw thevalve caponto thevalve.
X Repea tthese stepsforthe other tires. Tire
pressure losswarning system
(Canada only)
General notes While
thevehicle isin motion, thetire pres-
sure losswarning systemmonitors thesettire
pressure usingtherotational speedofthe
wheels. Thisenables thesystem todetect sig-
nificant pressure lossinatire. Ifthe speed of Tire
pressure
311Wheelsandtires Z