battery MERCEDES-BENZ E-CLASS SALOON 2022 Service Manual

T
T
elephone menu ov
elephone menu overerview
view 1
Blue tooth ®
device name of the cur rently con-
nected mobile phone/of the mobile phone
2 Blue tooth ®
device name of the cur rently con-
nected mobile phone/of the mobile phone
(two phone mode)
3 Battery status of the connected mobile phone
4 Signal strength of the mobile phone network
5 Options 6
Device manager
7 Messages
8 Numerical pad
9 Contact sear ch T
T elephon
elephon y oper
y operating modes ov
ating modes overerview
view
Depending on your equipment, thefo llowing tel-
ephony operating modes are available:
R A mobile phone is connected tothe multime-
dia system via Blue tooth ®
. 318
318
MBUX multimedia system

Ov
Ov
er
ervie
vie w of t
w of t he Mer
he Mer cedes-Benz emerg
cedes-Benz emerg ency call
ency call
syst
syst em
em The Mercedes-Benz emer
gency call system can
help todecisively reduce the time between an
accident and the ar riva l of emer gency services at
th e site of the accident. It helps locate an acci-
dent site in places that are di1cult toaccess.
The emer gency call can be made automatically
(/ page 329) or manual ly (/ page 330). Only
make emer gency calls if you or others are in need
of rescue. Do not make an emer gency call in the
ev ent of a breakdown or a similar situation.
Yo u can /nd more information on there gional
av ailability of eCall at: https://www.mercedes-
benz-mobile.com/extra/ecall/
Messag
Messag es on t es on the displ ay
he displ ay
The following message s appear inthe displa y:
R SOS NOT READY :th eve hicle is not switched
on or the emer gency call system is malfunc-
tioning . This does not necessarily indicate
comple tefailure of the emer gency call system.
Eme rgency calls can still be transmitted. The display only
refers to theve hicle and does
not take account of theav ailability of mobile
phone networ ksand the Mercedes-Benz emer-
ge ncy call centre.
The functional readiness of the emer gency call
system on theve hicle can be seen when the
SOS NOT READY displaydisappears once the
ve hicle is switched on.
R G: The icon appears in the display during
an active emer gency call.
% Ifth ere is a malfunction in the Mercedes-Benz
emer gency call system (e.g. a fault with the
speaker, microphone, airbag, SOS button), a
cor responding message appears on the dis-
play in the inst rument cluster. T
T
r
rigg
igg er
ering an aut
ing an aut omatic Mer
omatic Mer cedes‑Benz emer-
cedes‑Benz emer-
g
g ency call
ency call R
R
eq
eq uir
uir ements:
ements:
R The vehicle is switched on.
R The star ter battery is su1ciently charge d. The Mercedes‑Benz emer
gency call system trig-
ge rs an emer gency call automatically in thefo l-
lowing cases:
R ATer activation of there straint systems su ch
as airbags or seat belt tensioners aTer an
accident
The eme rgency call has been made:
R Avo ice connection is made tothe
Mercedes‑Benz eme rgency call centre.
R A message with accident data is transmitted
tothe Mercedes‑Benz emer gency call centre.
The Mercedes‑Benz eme rgency call centre
can transmit theve hicle position data toone
of the public emer gency services call centres.
R Under cer tain circumstances data is also
transmitted in thevo ice channel tothe
Mercedes‑Benz eme rgency call centre.
This allo wsmeasures forre scue, reco very or
to wing toa Mercedes‑Benz Se rvice Centre to
be initiated quickl y.
The SOS button in theov erhead control panel
0ashes until the emer gency call is /nished. MBUX multimedia system
329 329

Dat
Dat
a tr
a transf
ansf er of t
er of t he Mer
he Mer cedes-Benz emerg
cedes-Benz emerg ency
ency
call syst
call syst em
em In
theev ent of an automatic or manual emer gency
call thefo llowing data is transmitted, forex ample:
R Vehicle's GPS position data
R GPS position data on thero ute (a fewhund red
metres before the incident)
R Direction of tr avel
R Vehicle identi/cation number
R Vehicle drive type
R Number of people de term ined tobe in the
ve hicle
R Whe ther Mercedes me connect is available or
not
R Whe ther the emer gency call was initiated
manually or automatically
R Time of the accident
R Language setting on the multimedia system Fo
r accident clari/cation purposes, thefo llowing
measures can be take n up toan hour aTer the
emer gency call has been initia ted:
R The cur rent vehicle position can be de ter-
mined.
R Avo ice connection totheve hicle occupants
can be es tablished.
% ForRu ssia: various functions, e.g. receiving
tra1c information, cannot be per form ed for
up totwo hours aTer sending an emer gency
call. Self diagnosis function of t
Self diagnosis function of t
he emerg
he emerg ency call sy
ency call sy s-
s-
t
t em
em Yo
ur car veri/es the operability of the emer gency
call system each time theve hicle is ON. In case of
system failure, you will be informed with text mes-
sage on the inst rument cluster and with red indi-
cator SOS NOT READY on the displa y.
Please, ma kesure, that during 30 seconds aTer
switching vehicle ON there d indicator SOS NOT
READY in the upper right corner of display is switched OFF,
this means the emer gency call sys-
te m passed diagnostics successfull y. S
S
t
tar
ar ting/ending ERA
ting/ending ERA -GL
-GLON
ONASS t
ASS t es
est mode
t mode R
R
eq
eq uir
uir ements:
ements:
R The star ter battery is su1ciently charge d.
R The vehicle is switched on.
R The vehicle has been stationary for at least
one minute.
% The test mode is cu rrently available in thefo l-
lowing countries, forex ample:
R Russia
R Belarus
R Kazakhstan
R Armenia
R Kyrgyzs tan MBUX multimedia system
331
331

R
Frequent operation in mountainous terrain or
on poor road sur faces
R When the engine is oTen leT idling for long
periods
R Operation in particular lydusty conditions
and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, ha vethe
interior air /lter, air /lter, engine oil and oil /lter,
fo rex ample, changed more frequentl y.Check the
tyres more frequently if theve hicle is operated
under increased st ress. Further information can
be obtained at a quali/ed specialist workshop. Batt Batt
er
ery disconnection per
y disconnection per iods
iodsThe AS
SYST PLUS service inter val display can cal-
culate the service due date only when the battery
is connected. #
Display and no tedown the service due date
on the inst rument display before disconnect-
ing the battery (/ page 340). Engine com
Engine com
par
partment
tment A
A
ctiv
ctiv e bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otection)
ection) Oper
Oper
ation of t
ation of t he activ
he active bonne
e bonne t (pedes
t (pedestr trian pr ot
ian pr otec-
ec-
tion)
tion)
In cer tain accident situations, the actuation of the
active bonnet reduces therisk of injury topedes-
trians. The rear area of the bonnet is raised by
appr oximately 80 mm.
ATer being triggered, the active bonnet remains in
th era ised position. Limited visibility due tothe
ra ised bonnet cannot be ruled out.
ATer the active bonnet has been actuated, pedes-
trian pr otection may be limited.
Ha ve the full functionality of the active bonnet
re stored immediatel y in aquali/ed specialist
wo rkshop.
If necessar y,adjust your seat position and drive
carefully toaqu ali/ed specialist workshop. If a
safe continued jou rney is not possible, contact a
qu ali/ed specialist workshop. Opening and closing t Opening and closing t
he bonnet
he bonn et &
D
DAN
AN GER
GER Risk of fatal injuries when car ry-
ing out maintenance workduring the
ch arging process
During thech arging process, the high-voltage
on-board electrical system is under high volt-
age. #
Do not per form any main tenance work
during thech arging process. &
W
WARNING
ARNING Risk of accident due todriving
with the bonnet unloc ked
The bonnet may open and blo ckyour vie w. #
Neverre lease the bonnet when driving. #
Before every trip, ensure that the engine
bonnet is loc ked. &
W
WARNING
ARNING Risk of accident and inju ry
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position. Maintenance and care
341
341

+
ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmen tal
pollution caused byenvironmentally ir re-
sponsible disposal Ty
re sealant contains pollu tants. #
Have the tyre sealant bottle disposed of
professionall y,e.g. at a Mercedes-Benz
Service Centre. #
Stow the tyre sealant bottle and the tyre in0a-
tion compressor. #
Pull away immediatel y. #
Stop driving aTer appr oximately ten minutes
and check the tyre pressure using the tyre
in0ation compressor.
The tyre pressure must now be at least
130 kPa (1.3 bar/19 psi). &
W
W ARNING ARNING Risk of accident due tothe
speci/ed tyre pressure not being attained
If th e speci/ed tyre pressure is not reached,
th e tyre is too badly damaged. The tyre seal-
ant cannot repair the tyre in this instance. The braking and driving
characteristics may be
gr eatly impaired. #
Do not continue driving. #
Consult a quali/ed specialist workshop. Countr
Countr
ies t
ies that hav
hat hav e Mer
e Mercedes-Benz Ser
cedes-Benz Ser vice24h:
vice24h:
yo u will /nd a stic ker with thete lephone number,
e.g. on the B‑pillar on the driver's side. #
Correct the tyre pressure if it is still at least
130 kPa (1.3 bar/19 psi). See the tyre pres-
sure table on the fuel /ller 0ap forva lues. #
T
To incr
o incr ease t
ease t he tyr
he tyre pr
e pressur
essur e:
e:switch on the
tyre in0ation compressor. #
T To r o r educe t
educe t he tyr
he tyre pr
e pressur
essur e:
e:press pressure
re lease button 1next tomanome ter2. #
When the tyre pressure is cor rect, unscr ew
th e /lling hose from theva lve of the sealed
tyre. #
Screw theva lve cap onto theva lve of the
sealed tyre. #
Pull the tyre sealant bottle out of the tyre in0a-
tion compressor.
The /lling hose st ays on the tyre sealant bot-
tle. #
Drive tothe nearest quali/ed specialist work-
shop and ha vethe tyre, tyre sealant bottle and
/lling hose replaced there. Batt Batt
er
ery (v
y (v ehicle)
ehicle) N
No
ot
tes on t
es on t he 12 V batt
he 12 V batt ery
ery &
W
WARNING
ARNING Risk of an accident due towo rk
car ried out incor rectly on the battery
Wo rkcar ried out incor rectly on the battery
can, forex ample, lead toa short circuit. This Breakdown assis
tance
363
363

can
restrict functions releva nt for saf ety sys-
te ms and impair the operating saf ety of your
ve hicle.
Yo u could lose control of theve hicle in thefo l-
lowing situations in particular:
R when braking
R intheev ent of abrupt steering manoeuvres
and/or when theve hicle's speed is not
adap tedto thero ad conditions #
Intheev ent of a short circuit or a similar
incident, contact a quali/ed specialist
wo rkshop immediatel y.#
Do not drive on. #
Always ha veworkon the battery car ried
out at a quali/ed specialist workshop. R
Further information on ABS (/ page 219)
R Further information on ESP ®
Fo r saf etyre asons, Mercedes-Benz recommends
th at you only use batteries which ha vebeen
appr oved foryo ur vehicle byMercedes-Benz. All v
All v
ehicles ex
ehicles excep
cep t v
t vehicles wit
ehicles wit h a lit
h a lit hium-ion bat-
hium-ion bat-
t
t ery
ery &
W
WARNING
ARNING Risk ofexplosion due toelec-
trostatic charge
Electrostatic charge can ignite the highly
ex plosive gas mixtu reinthe batter y. #
Todischar geany elect rostatic charge
th at may ha vebuilt up, touch the me tal
ve hicle body before handling the batter y. The high
ly0ammable gas mixtu reis created while
th e battery is charging and during starting assis-
ta nce. &
W
WARNI NG
ARNI NGDanger of chemical burns from
th e battery acid
Battery acid is caustic. #
Avoid contact with the skin, eyes or
clo thing. #
Do not lean overth e batter y. #
Do not inhale battery gases. #
Keep children away from the batter y. #
Immediately rinse bat tery acid o. thor-
oughly with plenty of clean water and
seek medical attention immediatel y. All v
All v
ehicles
ehicles
+ ENVIR
ENVIR
ONMENT
ONMENT AL NO
AL NOTE
TEEnvironmental
damage due toimproper disposal of bat-
te ries Batteries contain pollutants. It is
illegal todispose of them with the household
ru bbish. #
Dispose of batteries in an
environmentally responsible manner.
Ta ke dischar ged batteries toaqu ali/ed
specialist workshop or toa collection
point for used batteries. 364
364
Breakdown assistance

If
yo u ha vetodisconnect the 12 V batter y,con-
ta ct a quali/ed specialist workshop.
Comply with saf ety no tes and take protective
measures when handling batteries. Risk of
explosion. Fire
, naked 0ames and smoking are
prohibi ted when handling the batter y.
Av oid creating spar ks. Electrolyte or battery acid is cor
rosive.
Av oid contact with the skin, eyes or
clo thing. Wear suitable pr otective
clo thing, in particular glo ves, an apron
and a face mask. Immediately rinse
electrolyte or acid splashes o. with
clean water. Consult a doctor if neces-
sar y. We
ar saf ety glasses. Ke
ep children away. Obser
vethis Owner's Manual.
Obser vethefo llowing if you do not intend touse
th eve hicle over an extended period of time:
R Activate standby mode.
R Alternativel y:connect the battery toa battery
ch arge r appr ovedby Mercedes-Benz or con-
sult a quali/ed specialist workshop todiscon-
nect the batter y. N N
o
ot
tes on st
es on st ar
arting assist
ting assist ance and c
ance and c har
harging t
ging t he 12
he 12
V batt
V batt ery
ery All v All v
ehicles
ehicles
When charging the battery and during starting
assistance, alw ays use the jump-start connection
point in the engine compartment. *
N
NOOTE
TE Damage tothe battery due toove r-
vo ltage When
charging using a battery charge r without
a maximum charging voltage, the battery or
th e on-board electronics may be damaged. #
Only use battery charge rs with a maxi-
mum charging voltage of 14.8 V. &
W
WARNI NG
ARNI NGRisk of explosion due tothe
ignition of hydrogen gas
If th ere is a short circuit or spar ksare created,
th ere is a danger of hydrogen gas igniting
when youch arge the batter y. #
Make sure that the POSITIVE term inal of
a connected battery does not come into
contact with vehicle parts. #
Never place me tal objects or tools on a
batter y. #
When connecting and disconnecting the
batter y,alw ays obser vethe sequence of
battery term inals described. Breakdown assistance
365 365

#
During starting assistance, alw aysta ke
care toconnect only battery term inals of
identical polarity. #
During starting assistance, obser vethe
sequence described for connecting and
disconnecting the jump leads. #
Do not connect or disconnect the bat-
te ry term inals with the engine running. &
W
WARNI NG
ARNI NGRisk of explosion due toexplo-
sive mixture of gases
An explosive mixture of gases can escape
from the battery during charging and starting
assis tance. #
Fire , naked 0ames, smoking and creating
spar ksmust be avoided. #
Make sure there is adequate ventilation. #
Do not stand overth e batter y. &
W
WARNI NG
ARNI NGRisk of explosion from a frozen
battery
A dischar ged battery may freeze at temp era-
tures slightly abo veor below freezing point.
During starting assistance or battery charging,
battery gas can be released. #
Always allow a battery tothaw before
ch arging it or per form ing starting assis-
ta nce. If
th e indicator/warning lamps in the instrument
cluster do not light up at low temp eratures, it is
ve ry likely that the dischar ged battery has frozen.
In this case you may neither jump-start theve hi-
cle nor charge the batter y.
The service life of a bat tery that has been thawed
may be dramatically shor tened. The starting char-
acteristics may be impaired, especially at low
te mp eratures.
It is recommended that you ha veath awe d battery
ch ecked at a quali/ed specialist workshop. Plug-in h
Plug-in h ybr
ybrid
id
If yo ur vehicle has been star ted with starting
assistance, it may not be possible touse the elec-
tric drive for appr oximately 30 minutes.
St arting assis tance is not considered tobe a nor-
mal operating condition.
All v All v ehicles
ehicles
* NO
NOTE
TEDamage caused bynume rous or
ex tended attem ptsto start the engine Numerous or
extended attem ptsto start the
engine may damage the catalytic con verter
due tonon-combusted fuel. #
Avoid numerous and extended attem pts
to start the engine. Obser
vethefo llowing points during starting assis-
ta nce and when charging the batter y:
R Only use undamaged jump lead/charging
cables with a su1cient cross-section and
insulated term inal clamps.
R Non-insulated parts of thete rm inal clamps
must not come into contact with other me tal 366 366
Breakdown assistance

parts while
the jump lead/charging cable is
connected tothe battery/jump-start connec-
tion point.
R The jump lead/charging cable must not come
into contact with any parts which may mo ve
when the engine is running.
R Always make sure that nei ther you nor the bat-
te ry is electrostatically charge d.
R Keep awa y from /re and naked 0ames.
R Do not lean over the batter y.
Obser vethe additional following points when
ch arging the batter y:
R Only use battery charge rs tested and
appro vedfo r Mercedes-Benz.
R Read the battery charge r's operating inst ruc-
tions before charging the batter y.
Obser vethe additional following points during
starting assistance:
R Starting assis tance may only be pr ovided
using vehicles, batteries or other jump start
devices with a nominal voltage of 12 V.
R The vehicles must not touch. R
V
V ehicles wit ehicles wit h a pe
h a petr
trol engine:
ol engine: jump-start the
ve hicle only when the engine and exhaust sys-
te m are cold. S
S
t
tar
ar ting assist
ting assist ance and c
ance and c har
harging t
ging t he 12 V batt
he 12 V batt ery
ery R
R
eq
eq uir
uir ements:
ements:
R The vehicle is secured with the electric par k-
ing brake.
R V
Vehicles wit
ehicles wit h aut
h automatic tr
omatic tr ansmission:
ansmission: the
transmission is in position j.
R The vehicle and all elect rical consume rsare
switched o..
R The bonnet is open. Example: engine compartment
#
Slide co ver1 of POSITIVE contact 2onthe
jump-starting connection point in the direction
of the ar row. #
Connect POSITIVE contact 2onyour vehicle
to the positive term inal of the donor battery
using the jump lead/charging cable. Alw ays Breakd
own assistance
367
367

begin with POSITIVE contact
2onyour own
ve hicle /rst. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:startthe engine of
th e donor vehicle and run at idle speed. #
Connect the negative term inal of the donor
battery and ear thpoint 3ofyour ow nve hicle
by using the jump lead/charging cable. Begin
with the donor battery /rst. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:startthe engine of
yo ur ow nve hicle. #
Dur
During t
ing t he c
he char
harging pr
ging pr ocess:
ocess: startthech arg-
ing process. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:letthe engines run
fo r se veral minutes. #
Dur
During st
ing st ar
arting assist
ting assist ance:
ance:before disconnect-
ing the jump lead, switch on an electrical con-
sumer on your ow nve hicle, e.g. there ar win-
dow heater or lighting.
When the starting assistance/charging process is
comple te, per form thefo llowing steps: #
Firs t, re mo vethe jump lead/charging cable
from ear thpoint 3and the negative term inal of
the donor batter y,then POSITIVE contact
2 and the positive term inal of the donor bat-
te ry. Begin each time with the contacts on
yo ur ow nve hicle /rst. #
ATer removing the jump lead/charging cable,
close co ver1 of POSITIVE contact 2.
Plug-in h
Plug-in h ybr
ybr id:
id:ifyo ur vehicle has been star ted
with starting assis tance, it may not be possible to
use the electric drive for appr oximately 30
minutes.
Fu rther information can be obtained at a quali/ed
specialist workshop. R R
eplacing t
eplacing t he 12 V batt
he 12 V batt ery
ery #
Obser vethe no tes on the 12 V battery
(/ page 363).
Mercedes-Benz recommends that you ha vethe
12 V battery replaced at a quali/ed specialist
wo rkshop, e.g. at a Mercedes-Benz Se rvice
Centre. Obser
vethefo llowing no tes if youwa nttoreplace
th e battery yourself:
R Alwaysre place a faulty battery with a battery
which meets the speci/c vehicle requ ire-
ments.
The vehicle is equipped with an AGMtech nol-
ogy bat tery (Absorbent Glass Mat) or a lith-
ium-ion batter y.Fu llve hicle functionality is
only guaranteed with an AGM bat tery or lith-
ium-ion batter y.Fo r saf etyre asons, Mercedes-
Benz recommends that you only use batteries
which ha vebeen tested and appro vedfo ryo ur
ve hicle byMercedes-Benz.
R Carryove r de tach able parts, such as vent
hoses, elbow /ttings or term inal co vers from
th e battery being replaced.
R Make sure that theve nt hose is alw ays con-
nected tothe original opening on the side of
th e batter y.
Fi t any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
R Make sure that de tach able parts are recon-
nected in the same way. 368 368
Breakdown assistance