wheel MERCEDES-BENZ CLA 2018 Workshop Manual

Display messages
Possible causes/consequences and P Solutions
TirePress .S en ‐
sor(s) Missin g US Ao nl y:
There is no signal from th et ir ep ressur es ensor of on eors everal tires .
The pressur eoft he affecte dt ir ed oes no ta ppear in th em ultifunction
display. X
Hav et he fault yt ir ep ressur es ensor replace dataq ualified special -
ist workshop .
Tir eP ressure Moni‐
tor Inoperative No
Wheel Sensor s US Ao nl y:
The wheels mounte ddon ot hav eas uitable tire pressur es ensor .T he
tire pressur em onitor is deactivated.X
Moun tw heels wit hs uitable tire pressur es ensors.
The tire pressur em onitor is activated automatically after drivin gf or
af ew minutes.
Tir e Press. Monito r
Inoperative US Ao nl y:
The tire pressur em onitor is faulty.X
Visit aq ualified specialist workshop .
Vehicle Display messages
Possible causes/consequences and P Solutions
Depres sB rake to
Start Engine You hav ea ttempte dtos ta rt th ee ng in ew it ht he transmission in posi-
tion N without depressing th eb rak ep edal .X
Depress th eb rak ep edal .
To Deselect P or N,
Depres sB rake and
Start Engine You hav ea ttempte dtos hift th et ra nsmission to position R or D with-
out starting th ee ng ine.X
Start th ee ng ine.X
Depress th eb rak ep edal .
i It is only possibl etos hift th et ra nsmission from position P to th e
desire dp osition if you depress th eb rak ep edal .O nl yt he nc an th e
parking loc kbed eactivated. If you do no td epress th eb rak ep edal ,
th eD IR ECT SELECT lever can still be moved but th ep arking loc k
remain se ng aged.
i At transmission fluid temperatures belo w

Display messages
Possible causes/consequences and P Solutions
Sto pV ehicl eS hift
to PL eave Engine
Runnin g The automatic transmission has overheated. X
Drive on carefully.
The automatic transmission is available again when th ed isplay
message goe so ut .
If th em ultifunction display still shows th ed isplay message :X
Pull ove ra nd stop th ev ehicl es afely as soo nasp ossible, payin g
attention to roa da nd traffic conditions.X
Secur et he vehicl ea gainst rollin ga way ( Y
page 141).X
Wait until th ea utomatic transmission has cooled down and th ed is-
play message has disappeared.
Auxiliary Batter y
Malfunction The auxiliary battery for th ea utomatic transmission is no longer bein g
charged. X
Visit aq ualified specialist workshop .X
Unti lt hen, set th et ra nsmission to position P before you switch off
th ee ng ine. X
Befor el eaving th ev ehicle, apply th ee lectric parking brake.
Trans. Oil Overhea‐
ted Drive on wit h
Car e Mercedes-AMG vehicles: th et ra nsmission oil has overheated.
Manual drive progra m M and th et em porarily active manual drive pro -
gra ma re no longer available. The engin ep owe ro utput is reduced.X
Allow th ev ehicl etoc oo ld own .
4matic Currently
Unavailable 4MATIC has overheated. The vehicl eiso nl yd riven by th ef ront wheels.X
Drive on .
The airflow cools 4MATIC mor eq uickly.
Whe nt he display message goe so ut ,4 MATIC is available again and
th ev ehicl eisd riven by all fou rw heels.
4matic Inoperative 4MATIC is malfunctioning .T he vehicl eiso nl yd riven by th ef ront
wheels. X
Visit aq ualified specialist workshop .

Warning/
indicator
lamp Q Signal type
Possibl ec auses/consequences and P Solutions
%
Q The yellow ABS warning lamp is lit while the engine is running.
ABS (Anti-lock Braking System) is deactivated due to am alfunction. Therefore,
BAS (Brake Assist), Active Brake Assist, ESP ®
(Electronic Stability Program), the
HOLD function and hil ls tart assist, for example, are als od eactivated.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed
above. The wheels coul dt herefore lock if you brake hard ,f or example.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational ,E SP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident. X
Observe the additiona ld isplay messages in the multifunction display.X
Drive on carefully. X
Visi taq ualified specialist worksho pi mmediately.
If the ABS control unit is faulty, there is als oap ossibility that other systems ,s uch
as the navigation system or the automatic transmission, wil ln ot be available.
%
Q The yellow ABS warning lamp is lit while the engine is running.
ABS is temporarily unavailable .T herefore, BAS, Active Brake Assist, ESP ®
,E BD
(electronic brake force distribution), the HOLD function and hil ls tart assist, for
example, are als od eactivated.
Possible causes are: R
Self-diagnosi sisn ot yet complete.R
The on-board voltag em ay be insufficient.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels coul dt herefore lock if you brake hard ,f or exam-
ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational ,E SP ®
is unable to stabilize the vehicle.
There is ar isk of an accident.X
Carefully drive as uitable distance, making slight steering movements at as peed
above 12 mph (20 km/h).
The functions mentioned above are available again when the warning lamp goes
out.
If the warning lamp is still on: X
Observe the additiona ld isplay messages in the multifunction display.X
Drive on carefully. X
Visi taq ualified specialist worksho pi mmediately.220
Warning and indicator lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lamp Q Signal type
Possibl ec auses/consequences and P Solutions
%
Q The yellow ABS warning lamp is lit while the engine is running. Aw arning tone
als os ounds.
EBD is malfunctioning. Therefore, ABS, BAS, Active Brake Assist, ESP ®
,t he HOLD
function and hil ls tart assist, for example, are not available either.
ATTENTION ASSIST is deactivated.
G WARNING
The brake system continues to function normally, but without the functions listed
above. The front and rear wheels coul dt herefore lock if you brake hard ,f or exam-
ple.
The steerability and braking characteristics may be severely affected. The braking
distance in an emergency braking situation can increase.
If ESP ®
is not operational ,E SP ®
is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident. X
Observe the additiona ld isplay messages in the multifunction display.X
Drive on carefully. X
Visi taq ualified specialist worksho pi mmediately.
%

X
To en dac all: press the v button on the
multifunctio ns teering wheel.
or X
Press the corresponding multimedia system
button for ending ap hone call.X
After the emergency call, close cover C .
If the mobil ep hone network is unavailable,
mbrace will not be able to make the emergency
call. If yo ul ea ve the vehicl ei mmediatel ya fter
pressing SOS button D ,y ou do not know if
mbrace ha ss uc cessfull ym ade th ee mergency
call. In thi sc ase, always summon assistance by
othe rm eans.
Breakdow na ssistanc eb utton
X
To make ac all: press Roadside assistance
cal lb ut ton C .
Thi si nitiates ac al ltot he Mercedes-Benz Cus-
tome rA ssistance Center.
The indicator lamp in Roadside assistanc but-
ton C flashe sw hile the cal lisa ctive. The
Connectin gC all message appears on the
multifunctio nd is play .T he audi oo ut pu ti s
muted.
If ac onnectio nc an be established ,t he Call
Connected message appears in the multifunc-
tio nd is play.
If am obil ep hone network and GP Sr eception
are available ,t he system transfers data to the
Mercedes-Benz Customer Assistance Center,
for example: R
current location of the vehicle R
vehicl ei de ntificatio nn umber
The display of the multimedia system indicates
tha tac al lisa ctive. During the call, yo uc an
change to the navigatio nm enu by pressing the
NAVI button on the multimedia system ,f or
example.
Voice outpu ti sn ot available in thi sc ase. Av oice connectio ni se stablished between the
Mercedes-Benz Customer Assistance Center
and the vehicl eo ccupants.
From the remote malfunctio nd iagn osis, the
Mercedes-Benz Customer Assistance Center
can ascertain the nature of the problem
( Y
page 250).
The Mercedes-Benz Customer Assistance Cen-
ter either send saq uali fied Mercedes-Benz tech-
nician or makes arrangements for your vehicle
to be transported to the neares tM ercedes-Benz
Service Center.
Yo um ay be charge df or service ss uc hasr epair
work and/or towing.
Yo uc an find more informatio nint he separate
mbrace manual.
The system ha sn ot been able to initiate aR oad-
side assistance call, if: R
the R indicator lamp for the Roadside
assistance cal lb ut ton is flashing continu-
ously. R
no voice connectio ntot he Mercedes-Benz
Customer Assistance Center wa se stab-
lished.
Thi sc an occu rift he relevant mobil ep hone net-
work is not available ,f or example.
The Call Failed message appears on the mul-
tifunctio nd is play. X
To en dac all: press the v button on the
multifunctio ns teering wheel.
or X
Press the corresponding multimedia system
button for ending ap hone call.
MB Info cal lb utton
X
To make ac all: press MB Info cal lb ut ton C .
Thi si nitiates ac al ltot he Mercedes-Benz Cus-
tome rA ssistance Center.Features 247
Sto wag ea nd featur es Z

ASSYS TP LUS
Service message The ASSYS TP LU Ss ervic ei nterval display
inform sy ou of th en ex ts ervic ed ue date.
You can fin di nformation on th et yp eofs ervic e
and servic ei ntervals in th eM aintenance Book -
let .
You can obtain further information from an
authorize dM ercedes-Benz Cente rora t
http://www.mbusa.co m( US Ao nl y).
i The ASSYS TP LU Ss ervic ei nterval display
does no ts ho wa ny information on th ee ng in e
oil level. Observ et he note sont he engin eo il
level ( Y
page 258).
The multifunction display shows as ervic em es -
sage for several seconds, e.g. :R
Servic eAin..d ay sR
Servic eAd ueR
Servic eAo verdu eby..d ay s
Dependin gont he operating condition soft he
vehicle, th er emaining time or distanc eu ntil th e
next servic ed ue dat eisd isplayed.
The lette r A or B ,p ossibl yinc onnectio nw it ha
number or another letter, indicates th et yp eo f
service. A stand sf or am inor servic ea nd B for a
major service.
You can obtain further information from an
authorize dM ercedes-Benz Center.
The ASSYS TP LU Ss ervic ei nterval display does
no tt ak ei nt oa ccoun ta ny periods of time during
whic ht he battery is disconnected.
Maintainin gt he time-dependen ts ervic es ch ed-
ule: X
Not ed own th es ervic ed ue dat ed isplayed in
th em ultifunction display before disconnect -
ing th eb attery.
or X
Afte rr econnecting th eb attery, subtrac tt he
battery disconnection periods from th es er -
vic ed at es hown on th ed isplay.
Hiding as ervice messageX
Press th e v or 8 butto nont he steering
wheel. Displaying service messages X
Switc hont he ignition .X
Press th e Y or e butto ntos elect th e
Serv. menu. X
Press th e c or d butto ntos elect th e
ASSYST PLU S submen ua nd confirm by press-
ing th e v button.
The servic ed ue dat ea ppear sint he multi-
function display.
Infor ma ti on abou tS ervice
Resetting th eA SSYS TP LUS service
interval display
! If th eA SS YS TP LU Ss ervic ei nterval display
has been inadvertentl yr eset ,t hi ss etting can
be correcte dataq ualified specialist work-
shop.
Hav es ervic ew or kc arrie do ut as described in
th eM aintenance Booklet .T his may otherwise
lead to increased wear and damag etot he
major assemblies or th ev ehicle.
Aq ualified specialist workshop ,e .g .ana uthor-
ized Mercedes-Benz Center, will reset th e
ASSYS TP LU Ss ervic ei nterval display after th e
servic ew or kh as been carrie do ut .Y ou can also
obtain further information on maintenance
work, for example.
Special service requirements The specifie dm aintenance interval takes only
th en orma lo peration of th ev ehicl ei nt o
account. Under arduous operating condition so r
increased load on th ev ehicle, maintenance
wor km us tbec arrie do ut mor ef re quently, for
example: R
regular cit yd rivin gw it hf re quen ti ntermediat e
stops R
if th ev ehicl eisp rimarily used to travel short
distances R
use in mountainous terrain or on poor road
surfaces R
if th ee ng in eiso ften lef ti dlin gf or lon gp eriodsR
in particularly dust yc onditi ons, or if air-recir-
culation mod eisf re quentl yu sed
In these or similar operating conditions, hav e
th ei nterior filter, engin ea ir cleaner, engin eo il
and oil filter, for example, changed mor ef re -ASSYST PLUS 261
Maintenance and care Z

quently. Under arduous operatin gc onditions,
the tires must be checked more often. Further
information can be obtained at aq ualified spe-
cialist workshop, e.g. an authorized Mercedes-
Ben zC enter.
Driving abroad An extensive Mercedes-Benz Service network is
also available in other countries. You can obtain
further information from any authorized
Mercedes-Benz Center.
Care
General notes
H Environmental note
Dispose of empty packagin ga nd cleaning
cloths in an environmentally responsible man-
ner.
! For cleanin gy our vehicle, do not use any of
the following: R
dry, rough or hard cloths R
abrasive cleanin ga gentsR
solvents R
cleanin ga gent sc ontainin gs olvents
Do not scrub.
Do not touch the surfaces or protective films
with hard objects, e.g. ar ing or ice scraper.
You could otherwise scratch or damage the
surfaces and protective film.
! Do not park your vehicle for al ong period of
time directly after cleaning, particularly after
cleanin gt he wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore,
drive for af ew minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a
long period of time.
Regular care of your vehicle is ac ondition for
retaining the quality in the long term.
Use care product sa nd cleanin ga gent sr ecom-
mended and approved by Mercedes-Benz. Washing the vehicle and cleaning the
paintwork
Automatic car wash
G WARNING
Braking efficiency is reduced after washing
the vehicle. There is ar isk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
condition su ntil full brakin gp ower is restored.
! When Distance Pilot DISTRONIC or the
HOLD function is activated, the vehicle
brakes automatically in certain situations.
To avoid damage to the vehicle, deactivate
Distance Pilot DISTRONIC and the HOLD
function in the following or similar situations: R
when towing the vehicle R
in the car wash
! Never clean your vehicle in aT ouchless
Automatic Car Wash as these use special
cleanin ga gents. These cleanin ga gent sc an
damage the paintwor korp lastic parts.
! Make sure that the automatic transmission
is in position N when washing your vehicle in
at ow-through car wash. The vehicle could be
damaged if the transmission is in another
position.
! Make sure that: R
the side windows and the sliding sunroof
are fully closed. R
the blower is switched off. R
the windshield wiper switch is at position 0 .
The vehicle may otherwise be damaged.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleanin gitinana utomatic car wash.
After using an automatic car wash, wipe off wax
from the windshield and the wiper blades. This
will preven ts mears and reduce wiping noises
caused by residue on the windshield.
Washing by hand
In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in each country.262
Care
Maintenance and care

X
Use as uitabl et ouch-up stick, e.g. MB Touch-
Up Stick ,tor epair slight damage to the paint-
work quickly and provisionally.
Matt ef inish care
! Never polish the vehicle or the light alloy
wheels. Polishing causes the finish to shine.
! The following may cause the paint to
become shiny and thus reduce the matte
effect: R
strong rubbing of the paintwork with
unsuitabl em aterialsR
frequent use of automatic car washes R
washing the vehicle in direct sunlight
! Never use paint cleaner, buffing or polishing
products, or gloss preserver, e.g. wax, for the
purpose of paintwork care. These products
are only suitabl ef or high-gloss surfaces. Their
use on vehicles with matte paintwork leads to
considerable surface damage or, more spe-
cifically ,tos hiny, spotted areas.
Alway sh ave paintwork repairs carried out at a
qualified specialist workshop.
! Do not use wash programs with ah ot wax
treatment under any circumstances.
Observe these notes if your vehicle has ac lear
matte finish. This will help you to avoid damage
to the paintwork due to incorrect treatment.
These notes also apply to light alloy wheels with
ac lear matte finish.
The vehicle should ideally be washed by hand
using as oft sponge, car shampoo and plenty of
water.
Use only insect remover and car shampoo from
the range of approved Mercedes-Benz care
products.
Cleaning the vehicl ep arts
Cleaning the wheels
G WARNING
The water jet from ac ircular jet nozzle (dirt
blasters) can cause invisible exterior damage
to the tires or chassis components. Compo-
nent sd amage dint his way may fail unexpect-
edly .T here is ar isk of an accident. Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis component sr eplaced imme-
diately.
! Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! Do not park your vehicle for al ong period of
time directly after cleaning, particularl ya fter
cleaning the wheel rim with wheel cleaner.
Wheel cleaner can lead to the increased cor-
rosion of the brake discs and pads. Therefore,
drive for af ew minutes after cleaning. By
heating up the brakes, the brake discs and
pads dry. The vehicle can then be parked for a
long period of time.
Cleaning the windows
G WARNING
You could become trapped by the windshield
wipers if they start moving while cleaning the
windshiel dorw iper blades. There is ar isk of
injury.
Alway ss witch off the windshiel dw ipers and
the ignition before cleaning the windshiel do r
wiper blades.
! Only fold the windshiel dw ipers awa yf rom
the windshiel dw hen vertical. Otherwise, you
will damage the hood.
! Do not use dry cloths, abrasive products,
solvents or cleaning agents containing sol-
vents to clean the inside of the windows. Do
not touch the insides of the windows with
hard objects, e.g. an ice scraper or ring. There
is otherwise ar isk of damaging the windows.
! Clea nt he water drainage channels of the
windshiel da nd the rear window at regular
intervals. Deposits such as leaves, petals and
pollen may under certain circumstances pre-
vent water from draining away. This can lead
to corrosion damage and damage to elec-
tronic components. X
Clea nt he inside and outside of the windows
with ad amp cloth and ac leaning product that
is recommended and approved by Mercedes-
Benz.264
Care
Maintenance and care

X
Make sure that the vehicle is at as tandstill
and the SmartKey is in key position H in the
ignition lock. X
Open the camera cover for cleaning via the
multimedia system (see the separate operat-
ing instructions). X
To clean the rear view camera: use clear
water and as oft cloth to clean camera
lens C .
Cleanin gt he exhaust pipes
G WARNING
The exhaust tail pipe and tail pipe trim can
become very hot. If you come into contact
with these parts of the vehicle, you could burn
yourself. There is ar isk of injury.
Always be particularly careful around the
exhaust tail pipe and the tail pipe trim. Allow
these components to cool down before touch-
ing them.
! Do not clean the exhaust pipe with acid-
based cleaning agents, such as bathroom
cleaner or wheel cleaner.
! Mercedes-AMG vehicles with black exhaust
pipes: the black-chrome tailpipe finishers
should not be polished with ac hrome polish.
They will otherwise lose their black sheen. For
optimal care, the faceplates should be rubbed
with al ightly oiled cloth after every car wash.
Commercially available engine and care oils
are suitable for this.
For heavier soiling, you can apply af ine paint-
work polish with am icrofiber cloth. Remove
the excess polish residue after polishing.
Impurities combined with the effect sofr oad grit
and corrosive environmental factors may cause
flash rust to form on the surface. You can
restore the original shine of the exhaust pipe by
cleaning it regularly ,e specially in winter and
after washing. X
Clean the exhaust pipe with ac are product
tested and approved by Mercedes-Benz. Interior care
Cleanin gt he display
! For cleaning, do not use any of the following: R
alcohol-based thinner or gasoline R
abrasive cleaning agents R
commercially-availabl eh ousehold cleaning
agents
These may damage the display surface. Do
not put pressure on the display surface when
cleaning. This could lead to irreparable dam-
age to the display. X
Before cleaning the display ,m ake sure that it
is switched off and has cooled down. X
Clean the display surface using ac ommer-
cially available microfiber cloth and TFT/LCD
display cleaner. X
Dry the display surface using ad ry microfiber
cloth.
Cleanin gt he plastic trim
G WARNING
Care products and cleaning agents containing
solvents cause surfaces in the cockpit to
become porous. As ar esult, plastic parts may
come loose in the event of air bag deploy-
ment. There is ar isk of injury.
Do not use any care products and cleaning
agents to clean the cockpit.
! Never attach the following to plastic surfa-
ces: R
stickers R
films R
perfume oil container or similar
You could otherwise damage the plastic.
! Do not allow cosmetics, insect repellent or
sunscreen to come into contact with the plas-
tic trim. This maintains the high-quality look of
the surfaces. X
Wipe the plastic trim with ad amp, lint-free
cloth, e.g. am icrofiber cloth. X
Heavy soiling: use care and cleaning prod-
ucts recommended and approved by
Mercedes-Benz.
The surface may change color temporarily.
Wait until the surface is dry again.266
Care
Maintenance and care

Cleaning th es te ering wheel and gear or
selector lever X
Thoroughl yw ipe wit had amp cloth or use
leather car ea gents that have been recom-
mended and approved by Mercedes-Benz.
Cleaning genuine wood and trim ele-
ments
! Do no tu se solvent-based cleanin ga gents
suc hast ar remover, wheel cleaners, polishes
or waxes. Ther eiso th erwise ar is kofd amag-
ing th es urface.
! Do no tu se chrom ep olis hont ri mp ieces.
The trim pieces have ac hr om el ook but are
mostly made of anodized aluminum and can
lose their shin eifc hr om ep olis hisu sed. Use
ad amp, lint-free cloth instead when cleaning
th et ri mp ieces.
If th ec hr ome-plated trim pieces are very
dirty, you can use ac hr om ep olish. If you are
unsure as to whether th et ri mp ieces are
chrome-plated or not, consult an authorized
Mercedes-Ben zC enter.X
Wipe th ew oode nt ri ma nd trim pieces wit ha
damp, lint-free cloth ,e .g .am icrofiber cloth.X
Heavy soiling: use car ea nd cleanin gp rod-
uct sr ecommended and approved by
Mercedes-Benz.
Cleaning th es eat covers
General notes
! Do no tu se am icrofiber cloth to clean covers
made out of real leather ,a rtificial leather or
DINAMICA .Ifu sed often ,t he se can damage
th ec over.
Not et ha tr egular car eise ssential to ensure that
th ea ppearanc ea nd comfor toft he covers is
retaine do ve rt ime. Genuine leather seat covers
! To retain th en atural appearanc eoft he
leather ,o bserv et he followin gc leaning
instructions: R
Clean genuine leather covers carefull yw ith
ad amp cloth and then wipe th ec overs
down wit had ry cloth. R
Mak es ure that th el eather does not
become soaked. It may otherwise become
roug ha nd cracked. R
Only use leather car ea gents that have
been tested and approved by Mercedes-
Benz. You can obtain these from aq ualified
specialist workshop.
Leather is an atural product.
It exhibit sn atural surface characteristics, for
example: R
differences in th et extur eR
marks caused by growth and injury R
sligh tn uances of color
Thes ea re characteristic sofl eather and not
material defects.
Seat cover sofo ther materials
! Observ et he followin gw hen cleaning:R
clean artificial leather covers wit hac loth
moistene dw it has olution containing 1%
detergen t( e.g. dish washin gl iquid).R
clean cloth covers wit ham icrofiber cloth
moistene dw it has olution containing 1%
detergen t( e.g. dish washin gl iquid). Rub
c ar
efull ya nd always wipe entir es eat sec-
tions to avoid leaving visible lines. Leave
th es eat to dry afterwards. Cleaning results
depen dont he type of dirt and how lon gi t
has been there. R
clean DINAMICA covers wit had amp cloth.
Mak es ure that you wipe entir es eat sec-
tions to avoid leaving visible lines.
Cleaning th es eat belts
G WARNING
Seat belt sc an become severely weakened if
bleached or dyed. This coul dc aus et he seat
belt stot ea rorf ail, for instance, in th ee vent of
an accident. This pose sani ncreased ris ko f
injury or fatal injury.
Never bleac hord ye th es eat belts.Care 267
Maintenance and care Z