2020 MERCEDES-BENZ GLA SUV reset

Dri
veprogr am S+(Sp ortPlu s)
Dr ive programS+ isch arac teriz ed bythefo l-
lowin g:
R theveh icleex hibi tspart icularl yspo rty dri v-
in g ch arac teris tics .
R theaut oma tic trans mis sionshi fts up later.
R thefue lco nsumpt ionpossiblybein ghig her
as ares ult ofthelat er aut oma tic trans mis -
sio nshi ftpoin ts.
R thesusp ensio nex hibi tspart icularl yst iff
spr ingin gand damp ing set ting s(ve hicles
wit hAM Gadapt ivespo rtsusp ensio nsys-
te m).
R glid ing mod eis no tavail able.
R theECO start /stopfun ction isno tavail able.
Dri veprogr am RACE (vehicles withAMG
ad aptive sportsus pen sion system)
i The
RACE drive pro grammay notbe used
on norm alroa ds. RACE muston lybe act iva-
te dand used ondedi catedrac ecir cui ts,no t
on publi croa ds.
The RACE drive pro gramisch arac teriz ed by
th efo llowi ng:
R theveh icleex hibi tsdri vin gch arac teris tics
suit able forth erac etrac k.
R all veh iclesyst ems aresetformax imum
spo rtin ess .
R theaut oma tic trans mis sionshi fts up later.
R thefue lco nsumpt ionpossiblybein ghig her
as ares ult ofthelat er aut oma tic trans mis -
sio nshi ftpoin ts.
R thesusp ensio nex hibi tspart icularl yst iff
spr ingin gand damp ing set ting s.
R glid ing mod eis no tavail able.
R theECO start /stopfun ction isno tavail able. Ma
nua lgea rshif ting
Gen eral not es You
canchang egear yourselfusingth est eer -
in g whee lpaddl eshi fters .The trans mis sion
mus tbe inpos ition 005Btodo this.
De pen dingon whic hsteer ing whee lpaddl e
shi fter ispulle d,theaut oma tic trans mis sion
imm ediat elyshifts in to thene xt gear down or
up, ifper mitted. Mer
cedes-AMG vehicles :to use man ualshift-
in g, you havetw oopt ions:
R tempo raryset ting
R per man entset ting
If you activat eman ualgear shiftin g, themult i-
fun ction disp laywill showthecur ren tgear
in st ead oftrans mis sionpos ition 005B.
If man ualgear shiftin g is deac tivat ed, thegear s
will besele cted aut oma tical ly.
Te mp oraryset ting X
To act ivate: shifttheDI RECT SELECT lever
to pos ition 005B.
X Pull steer ing whee lpaddl eshi fter 0043 or0044.
Tem porary setting will beact ive fora ce rtain
amo untoftime. Under certain cond ition sth e
min imum amountoftime isex tend ed, e.g. in
th ecas eof latera lacc eler ation,duri ngan
ove rrun phas eor when drivin gon steep ter-
rain .
X To dea ctivate: pull steer ing whee lpaddl e
shi fter 0044 and holdit in plac e.
or
X Use theDI RECT SELECT leverto swit chthe
tr ans mis sionpos ition .
or X Allveh icles (ex cept Mer cedes -AMG vehi-
cle s): use theDY NA MIC SELECT but tonto
ch ang eth edri ve pro gram.
Mer cedes -AMG vehicles: use theDY NA MIC
SE LECT control ler tochang eth edri ve pro -
gra m. 140
Aut
omatic tran sm issionDri ving andpa rki ng

Imp
ortant safety notes AT
TENTI ON ASSIST ison lyan aid tothedriv er.
It mig htnotalways recogn izefatigue or
inc reas inginatten tiven ess intime orfail to
rec ogn izethem atall. The systemisno ta sub-
st itute forawell- restedand attentive driv er.
The function alit yof ATTENTI ON ASSIST is
res trict ed and warn ingsmay bedelaye dor not
oc cur atall:
R ifth elen gthof thejo urn eyisless than
appr oximat ely30min utes
R ifth eroad cond ition ispoor ,e. g. ifth esur -
fac eis une ven orifth ere arepothole s
R ifth ere isast ron gside wind
R ifyou have adopt edaspo rty driv ingstyle
wit hhigh cornerin gspee dsorhigh rates of
acc eler ation
R ifyou arepredom inantly driv ingslow erthan
37 mph (60km/h) orfas terth an 125mph
(20 0km/ h)
R ifthe timehas been setincorre ctly
R in act ive drivin gsituat ions,such aswhen
you chan gelanes orchan geyour speed
ATTE NTIO NAS SIS Tis reset when youcontinue
your journey and startsassess ingyour tired-
nes sagain if:
R you switc hoff the engin e
R you takeoff your seatbeltandopen the
drive r'sdoor, e.g.forachan geofdrive rsor
to tak eabreak
Displa yingtheat tent ionlevel You
canhave currentstatusinformat iondis-
played inthe assist ancemen u(Y page 196)
of the on-board computer .
X Selec tthe Assistan cedisplay forAtten tion
Ass istusing theon-board computer
(Y page 197). The
followin ginf ormat ionisdisplayed:
R The lengt hof the jour ney sincethe last
break .
R The Atte ntionLeve l Atte
ntionLeve ldete rmin edby
ATTE NTIO NAS SIS T,displayed inabar dis-
play infive levels fromhigh tolow.
R IfATTE NTIO NAS SIS Tis unable tocalc ulate
the attent ion level andcannot output a
warnin g,the Syst emSusp ended Syst
emSusp endedmess age
appears. Thebardisplay thenchan gesthe
display, suchaswhen youaredrivin gat a
speed below37mph (60km /h)or above
125 mph (200 km/h).
Activa tingATTENT ION ASSIST X
Ac tivate ATTE NTIO NAS SIS Tusing theon-
board computer (Ypage 198).
The systemdete rmin esthe attent ion level of
the drive rdepen dingonthe settingselec -
ted:
Stan dard Stan
dard selected:thesensitiv itywith which
the syst emdete rmin esthe attent ion level is
set tonor mal.
Sens itive Sens
itiveselec ted:thesensitiv ityisset
higher .The attent ion level detected byAtten -
tion Assistisadapted accordin glyand the
drive ris warne dearlier.
When ATTENTIO NAS SIS Tis deact ivated, the
00D7 symbol appears inthe multif unction dis-
play inthe assist ancegraphic display.
When ATTENTIO NAS SIS Thas been deact iva-
ted, itis autom atically react ivatedafterthe
engin ehas been stopped. Thesensitiv ity
selec tedcorrespo ndstothe last selec tionacti-
vate d(st andard /sensitive).
War ning inthemu ltifunct iondisp lay If
fat igue orinc reasin glapses incon centration
are dete cted, awarnin gappears inthe multi-
func tion display: ATTENTIONASSI ST ATTE
NTIONASSI STTake a Take
a
Brea k! Brea
k!.
In addition tothe mess ageshown inthe multi-
func tion display, youwillthenhear awarnin g
ton e.
X Ifnec essary, takeabreak .
X Conf irmthemess agebypress ingthe 0076
butt ononthe steerin gwheel.
On long journeys, takeregular breaksin good
tim eto allow yourself torest proper ly.Ifyou
do not takeabreak andATTE NTIO NAS SIS T 184
Driving
systemsDriving andparking

Digit
alsp eed ometer X
Press the0059 or0065 buttonon thest eer -
in g whee lto sel ectth eTri p Tri
pmen u.
X Press the0063 or0064 buttonto sel ectth e
digi talspe edo met er0044.
A gear shiftrec ommen dation 00430097can also
fo llow .
Obs erveth einfo rm ation ongear shiftrec om-
men dation 0043when shiftin g man ually
(Y page 140).
Mer cedes -AMG vehicles :a gear shiftrec om-
men dation issho wninthest at us bar ofthe
mult ifunction display andnotin thedigi tal
spe edo met erdis play.
Res etting value s X
Press the0059 or0065 buttonon thest eer -
in g whee lto sel ectth eTri p Tri
pmen u.
X Press the0063 or0064 buttonto sel ectth e
fun ction that you wish tores et.
X Press 0076 toconfirm .
X Press 0064 tosel ectYes Yes
andpress0076 to
co nfirm .
You canresetthevalu esofthefo llow ing fun c-
ti on s:
R Trip odo met er
R "Fr om Start "tr ip compu ter
R "Fr om Rese t"trip compu ter
R EC Odis play
If you resetthevalu esintheEC Odis play, the
valu esinthe"Fr om Start "tr ip compu terare
also reset.If you resetthevalu esinthe"Fr om
St art "tr ip compu ter, thevalu esintheEC Odis -
play arealso reset. Na
viga tion sys tem me nu
Disp laying naviga tion inst ructi ons In
theNav i Nav
imen u,themult ifunction display
sho wsnav igat ioninst ruc tion s.
You canfindfur ther info rm ation onnav igat ion
in theDi git alOpe rator's Man ualforth emult i-
med iasys tem.
X Swi tchon themult imediasyst em(seeth e
Di git alOpe rator's Man ual)
X Press the0059 or0065 buttonon thest eer -
in g whee lto sel ectth eNav i Nav
imen u.
Rou tegui dance notactive 0043
Direc tion oftrave l
0044 Curr entro ad
Rou tegui dance active No
cha nge ofdire cti on annou nced 0043
Distanc eto des tinat ion
0044 Distanc eto thene xt chang eof dir ection
0087 Curr entro ad
0085 "Follow thero ad's cours e"sym bol Men
usandsu bm enu s
193On- boa rdcom puteran ddis pla ys Z

X
Swi tch onthe multime diasy stem andselect
rad io(se ethe Digi talOpe rator'sManua l).
X Pre ssthe 0059 or0065 button onthe stee r-
ing wheel tosel ect the Audi o Audi
omenu .
X To
select apres etlist or stati onlist:
pre ssand brieflyhol dthe 0063 or0064 but-
ton untilthe preset list or stati onlist inthe
des iredfreq uency rang eis sho wn.
X To select astati on:bri eflypre ss0063
or 0064.
i SIRI
USXM satell ite rad iofuncti onslike a
norma lrad io.
You canfind further informa tion onope ra-
tion inthe "Satellite rad io"secti onofthe
Digi talOpe rator'sManua lfor the multime dia
sy stem.
Ope rating anaudio playeror audio
medi a 0043
Current title
Aud ioda ta from various audio dev icesor
med iacan beplay ed, dep endi ngon the equip-
ment installed inthe vehicle.
X Swi tch onthe multime diasy stem and
swi tch onCD orMP3 mode(se ethe Digi tal
Ope rator'sManua l).
X Pre ssthe 0059 or0065 button onthe stee r-
ing wheel tosel ect the Audi o Audi
omenu .
X To select the next/pre vioustrack: briefly
pre ssthe 0063 or0064 button.
X To
select atrack fromthetrack list
(rapi dsc rol ling) :pre ssand holdthe 0063
or 0064 button untildes iredtrack appea rs.
If yo upre ssand hold0063 or0064, the
rap idscrol ling spe edisincre ased. Not all
au dio dri ves ordata carr iers suppo rtthis
functi on.
If track informa tion isstore don the audio
dev iceormed ium, the multifunction displ ay
wi llsho wthe numb erand title ofthe track. Vide
oDVD operatio n You
canonly operate DVD videos inthe Audi o Audi
o
menu inveh icles with CO MAND.
X Swi tch onCOMAND andselect DVD Video
(se ethe Digi talOpe rator'sManua l).
X Pre ssthe 0059 or0065 button onthe stee r-
ing wheel tosel ect the Audi o Audi
omenu .
X To
select the next or previ ousscen e:
bri eflypre ssthe 0063 or0064 button.
X To
select asc en efrom thescen elist
(rapi dsc rol ling) :pre ssand holdthe 0063
or 0064 button untildes iredscene 0043
ap pea rs. Tel
epho nemen u
In troduc tion G
WARNI
NG
If yo uope rate informa tion systems andcom-
muni cationequ ipment integratedin the
veh iclewh en driving ,yo umay bedistra cted
from thetraff icsitu ation. You couldalso
lo se control ofthe vehicle. The reisaris kof
an acci dent.
Only operate thisequipment when the traff ic
situ ation per mits .If yo uare not sure that
this ispos sible,pa rk the vehiclepa ying
attenti ontotraff iccondi tions andoperate
the equipment when the vehicleis stati on-
ary .
Whe ntele pho ning, youmus tobs erve thelega l
req uireme ntsforthe country inwh ich youare
curr ently driving .
X Swi tch onthe mob ile pho ne(seethe manu -
factu rer’sope ratinginstru ctions ).
X Swi tch onthe multime diasy stem (seethe
Digi talOpe rator'sManua l) Men
usand submen us
195On -bo ard computer anddisplays Z

If
you switch offthe engine, theRACE TIMER is
reset to"0" after 30seconds. Alllapsare
dele ted.
You cannot deleteindivid ualstored laps.Ifyou
have stopped 16laps,the current lapdoes not
have tobe reset.
X Rese tthe current lap.
X Press 0076toconfirm Reset Reset.
Reset Race-Timer? Reset
Race-Timer? appearsinthe multi-
function display.
X Press the0064 button toselect Yes Yes
and
press the0076 button toconfirm.
All lapsare dele ted.
Overall statistics 0043
RACETIMER overallevalu ation
0044 Total timedriven
0087 Average speed
0085 Distance covered
0083 Maximu mspeed
This function isshown ifyou have stored at
lea stone lapand stopped theRACETIMER.
X Press the0059 or0065 button onthe steer-
ing wheel toselect theAMG AMG
menu.
X Press the0063 button repeatedlyuntilthe
overal levalu ation appears. Lap
statistics 0043
Lap
0044 Lap time
0087 Average lapspeed
0085 Lap length
0083 Top speed duringlap
This function isonly availableifyou have
stored atlea sttwo lapsand have stopped the
RACETIMER.
X Press the0059 or0065 button onthe steer-
ing wheel toselect theAMG AMG
menu.
X Press 0063repeatedlyuntilalap evalu ation
appe ars.
Each lapappe arsinasepa ratesubme nu.
The fastest lapisindicated byflashi ngsym-
bol 0043.
X Press the0063 or0064 button toselect a
different lapevalu ation. Dis
play message s Introductio
n
Gene ralnotes Displa
ymessag esappe arinthe multifu nctiondisplay.
Displa ymessag eswith graphi cdispl aysmay beshown insimpl ifiedform inthe Operator's Man-
ual and may therefore differfromthemultifu nctiondisplay.
Plea serespond inaccordance withthedispl aymessag esand follow theaddi tional notes inthis
Operator's Manual.
Certai ndispl aymessage sare accompanie dby an aud ible warning toneoracontinuous tone.
When theignition isswitched off,alldispl aymessag esare dele ted, apartfrom some high-pri ority
displ aymessag es.Once thecause sof the high-pri oritydisplaymessag eshave been rectified, the
corresponding displaymessage sare also deleted. Di
splay message s
203On-bo ardcompu terand displays Z

Disp
laying service messa ges
X Swi tchon theign ition .
X Press the0059 or0065 buttonto sel ectth e
Ser v. Ser
v.men u.
X Press the0063 or0064 buttonto sel ectth e
ASS YST PLUS ASS
YST PLUSsubm enuand confirm by
pre ssing the0076 button.
The servicedue dateappe arsinthemult i-
fun ction display. Inf
orma tion about Service
Res etting theASSYS TPLUS service
int erva ldi sp lay !
If
th eAS SYST PLU Sser viceinte rval dis -
play hasbeeninadv ertently res et,th is set -
ti ng can becorrec tedat aqualif iedspecial-
ist wor kshop .
Hav eser vicewor kcar riedout asdes cribed
in theMain tenan ceBooklet .Thi smay other -
wise leadtoincr ease dwear anddam ageto
th emaj orass emb liesortheveh icle.
A qualif iedspecialis twor kshop ,e. g. an aut hor -
iz ed Mer cedes -Ben zCen ter, will resetthe
AS SYST PLU Sser viceinte rval dis play afterthe
ser vicewor khas beencar riedout .You can
also obtain further info rm ation onmain te-
nan cewor k,forex amp le.
Sp ecia lser vice requ irem ent s The
specifie dmain tenan ceinte rval take son ly
th eno rm alope ration oftheveh icle into
acc oun t.Un der arduous operating co nd ition s
or incr ease dload ontheveh icle, main tenan ce
wor kmus tbe car riedout morefreque ntly, for
ex amp le:
R reg ular city dri vin gwit hfreque ntinte rm edi-
at est ops
R ifth eveh icle ispri mar ilyused totrave lsho rt
dis tanc es
R use inmo unt ainous terrain oron poo rro ad
sur faces
R ifth een gin eis ofte nlef tidli ng forlon gper i-
ods
R in par ticul arly dust yco nd ition s,or ifair-
rec irculat ionmodeisfreque ntly used
In these orsim ilar ope rating co nd ition s,hav e
th einte rio rfil te r, en gin eair clean er,engin eoil and
oilfilte r, forex amp le,chang edmo refre-
quen tly. Un der arduous operating co nd ition s,
th etires mus tbe checke dmo reofte n. Fur ther
in fo rm ation can beobt ained ataqualif iedspe-
ci alis twor kshop ,e. g. an aut hor ized Mer cedes -
Be nz Cen ter.
Dri vin gab road An
extens ive Mer cedes -Ben zSe rvice ne twork
is also available inother count ries.You can
obt ain further info rm ation from any author ized
Mer cedes -Ben zCen ter. Car
e Gen
eral not es H
Envi
ronm ent alnot e
Di spo seofemp typac kagin gand clean ing
cl ot hs inan environ men tally res pon sible
man ner.
! Whe
nclean ing your car,do notuse:
R dry, coars eor har dclot hs
R abr asiv eclean ing agen ts
R sol ven ts
R clean ing agen tscontain ing sol ven ts
Do notsc rub .
Do notto uch thesur facesand films with
har dobj ects,e. g. rin gs orice sc rap ers.Ot h-
erw ise,you may scrat ch ordam agethesur -
fac esand films .
! Do
notpar kyour vehicle fora lon gper iod
of time directly aft erclean ing, par ticul arly
aft erclean ing th ewhee lrim withwhee l
cl ean er.Whe elclean ercan lead tothe
in cr ease dco rrosi on ofthebra kediscsand
pads .The refore, dri ve fora fe w min utes
aft erclean ing. By heat ing up thebra kes,the
bra kediscsand pads dry.Thevehicle can
th en be par kedfo ra lon gper iod oftime.
Regul arcar eof your vehicle isaco nd ition for
ret ain ing th equalit yin thelon gte rm .
Use carepro duc tsand clean ing agen tsrec om-
men dedandappr oved byMer cedes -Ben z. Car
e
279Maintena nce andcar e Z

Wear
eyeprotec tion. Keep
children away. Observe
thisOperator' sManual.
For safety reasons, Mercedes- Benzrecom-
mends thatyouonly usebatter ieswhich have
been testedand approved foryour vehicle by
Mercedes- Benz.These batteriesprovide
incr eased impact protectiontoprevent vehicle
occupant sfrom sufferin gacid burns should
the batter ybe damaged inthe event ofan
accident .
In order forthe batter yto achieve themaxi-
mum possible servicelife,itmust alway sbe
sufficien tlycharged.
Like other batter ies,thevehicle batterymay
discharge overtime ifyou donot use thevehi-
cle. Inthis case, havethebatter ydisconn ec-
ted ataqualified specialist workshop. Youcan
also charge thebatter ywith acharger recom-
mended byMercedes- Benz.Contac ta quali-
fied specialist workshop forfurther informa-
tion.
Have thebatter ycondit ionofcharge checked
more frequent lyifyou usethevehicle mainly
for short tripsorifyou leave itstandin gidle
for alength yperiod. Consult aqualified spe-
cialist workshop ifyou wish toleave yourvehi-
cle parked foralong period oftime.
Only replace abatter ywith abatter ythat has
been recomm endedbyMercedes- Benz.
Remove theSmart Keyifyou park thevehicle
and donot require anyelectr icalcons umers.
The vehicle willthen usevery little energy,
thus conserving batterypower.
If the power supply hasbeen interrupted, e.g.
if you recon nectthebatter y,you willhave to:
R set the clock using themultimedia system
(see theDigital Operator' sManual)
R reset thefunct ionforfolding theexterior
mirrors in/outautomatically, byfolding the
mirrors outonce (Ypage 99) Charging
thebatt ery G
WARNIN
G
During charging andjump- starting,explosive
gases canescape fromthebatter y.There is
a risk ofan explosion.
Particularly avoidfire,open flames, creating
sparks andsmokin g.En sure there issuffi-
cient ventilation whilecharging andjump-
start ing.Donot lean over abatter y. G
WARNIN
G
Batt eryacid iscaustic. Thereisarisk of
injury.
Avoid contactwith skin,eyes orclothin g.Do
not inhale anybatter ygases. Donot lean
over thebatter y.Keep children awayfrom
batter ies.Wash awaybatter yacid immedi-
ately withplenty ofclean water andseek
medical attention. G
WARNIN
G
A discharged batterycan freez eat temper a-
tures below freezingpoint. Whenjump-start-
ing the vehicle orcharging thebatter y,
gases canescape fromthebatter y.There is
a risk ofan explosion.
Allow thefrozenbatter yto thaw outbefore
charging itor jump- starting.
! Only
usebatter ychargers withamaximum
charging voltageof14. 8V.
! Only
charge thebatter yusing thejump-
start ingconn ection point.
The jump- startingconn ection pointisin the
engine compart ment(Ypage 296).
X Open thehood.
X Connec tthe batter ycharger tothe positive
term inaland ground pointinthe same order
as when connectin gthe donor batteryin the
jump- startingprocedure (Ypage 296).
If the indicator /warninglamps donot light up
in the instrument clusteratlow temper atures,
it is very likely thatthedischarged batteryhas
froz en.Inthis case youmay neith erjump- start
the vehicle norcharge thebatter y.The service
life ofathawed-out batterymay beshort er.
The start ingcharact eristicscan beimpaired, Bat
tery(vehicle )
295Breakdown assistance Z

X
When thevehicle isstation ary,depress the
brake pedalandkeep itdepressed.
X Shift theautomatic transmission toposition
005D.
X Release thebrake pedal.
X Release theelectr icparking brake.
X Switc hoff the automatic locking
(Y page 199).
X Switc hon the hazard warning lamps
(Y page 104).
X Turn theSmart Keyinthe ignition lockto
position 005Aand leave theSmart Keyinthe
ignition lock. Towing
avehicle withboth axles on
the ground
It is importan tthat youobserve thesafety
inst ruction swhen towing awayyourvehicle
(Y page 299).
X On
vehicles withKEYLE SS-GO orthe
KEYLE SS-GO startfunction: youmust use
the Smart Keyinstead ofthe Start/S topbut-
ton (Ypage 126).
The automatic transmission automatically
shifts toposition 005Dwhen youopen thedriv-
er's orfron t-passenger doororwhen you
remove theSmart Keyfrom theignition lock.In
order toensure thattheautomatic transmis-
sion stays inposition 005Cwhen towing away
the vehicle, youmust observe thefollowing
points :
X Make surethatthevehicle isstation ary.
X Turn theSmart Keytoposition 0048inthe igni-
tion lock.
X Depress andhold thebrake pedal.
X Shift theautomatic transmission toposition
005C.
X Leave theSmart Keyinposition 0048inthe
ignition lock.
X Release thebrake pedal.
X Release theelectr icparking brake.
X Switc hon the hazard warning lamps
(Y page 104).
i In
order tosignal achange ofdirect ion
when towing thevehicle withthehazard
warning lampsswitched on,use thecombi-
nation switch asusual. Inthis case, onlythe
indicator lampsforthe direct ionoftravel flash.
Afterresett ingthe combin ation
switch, thehazard warning lampstarts
flashing again. Perm
ittedtowing methods
Mercedes- Benzrecomm endstransportin gyour
vehicle inthe case ofabreakdown, ratherthan
towing itaway.
When towing away,useatowing ropeora
towing barwith both axles onthe ground. Do
not use anytow barsystems. Tr
anspor tingthevehicle
Vehicles withautomat ictransmission !
When
thevehicle isloaded fortran sport,
the fron tand rear axles mustbestation ary
and onthe same transportat ionvehicle.
Position ingover theconn ection pointofthe
tran sport vehicle isnot permitt ed.The drive
train mayotherwise bedamaged. All
vehicles !
You
may onlysecure thevehicle bythe
wheels, notbyparts ofthe vehicle suchas
axle orsteerin gcompon ents.Other wise, the
vehicle couldbedamaged.
X Turn theSmart Keytoposition 0048inthe igni-
tion lock (Ypage 125).
X Shift thetran smission toposition 005C.
As soon asthe vehicle hasbeen loaded:
X Preven tthe vehicle fromrolling awayby
applying theelectr icparking brake.
X Shift thetran smission toposition 005D. Towing
andtow-sta rting
301Breakdown assistance Z