2015 MERCEDES-BENZ E-CLASS SALOON change key battery

Example: Saloon
X To unloc kthe boot lid/tailgate: pull the
handl eont he boot lid/tailgate.
The vehicl eonlyu nlocks the boot lid/tail-
gate.
Deactivatin gand activating If yo
udon ot intend to us eakey for an exten-
de dp eriodoft ime,you can deactivate the
KEYLESS-GO functio nofthe key .The key will
then us everyl ittle power, thereb yconserving
battery power. For the purposes of activa-
tion/deactivation, the vehicl edoesn ot have
to be nearby.
X To deactivate: press the&button on
the key twice in rapi dsuccession.
The battery check lamp of the key
(Y page 97 )flashe stwice briefl yand
lights up once ,then KEYLESS-GO is deac-
tivated.
X To activate: press any button on the key or
insert the key into the ignition lock.
KEYLESS-GO and al lofits associate dfea-
tures ar eavailable again. Changin
gthe settings of the locking
system
Yo uc an change the settings of the locking
system .Thism eans tha tonlyt he driver's door
and the fuel fille rflapa reunlocke dwhent he
vehicl eisunlocked. Thi sisusefulify oufre-
quentl ytravel alone. X
To chang ethe setting: simultaneously
press the %and& buttons on the
key for approximatel ysixsecond suntilthe
battery check lamp flashe stwice
(Y page 97).
i If the setting of the locking system is
change dwithi nt he signa lran ge of the vehi-
cle ,pressing the &or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unloc kthe driver' sdoor: press the
% button once.
X To unloc kcentrally: press the %but-
ton twice.
X To lock centrally: press the&button.
The KEYLESS-GO functio nisc hange dasfol-
lows:
X To unloc kthe driver' sdoor: touch the
inne rsurface of the door handl eonthe
driver's door.
X To unloc kcentrally: touch the inne rsur-
face of the door handl eonthe front-
passenge rdoorort he rea rdoor.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press
and hol ddownthe % and& buttons
simultaneously for approximatel ysixsec-
ond suntilthe battery check lamp flashes
twice (Y page 97). Emergenc
ykeyelement
General notes If the vehicl
ecan no longe rbelocked or
unlocke dwitht he key ,use the emergency
key element.
If yo uusethe emergency key element to
unlock and open the driver's door or the boot
lid/tailgate, the anti-thef talarm system will
be triggered (Y page 89).96
KeyOpening and closing

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You can no longer lock
or unlock the vehicle
using the key. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 97) and replace it if necessary
(Y page 97).
If this does not work: X Lock (Y page 102) or unlock (Y page 103) the vehicle using the
emergency key element. The key is faulty.
X Lock (Y page 102) or unlock (Y page 103) the vehicle using the
emergency key element.
X Have the key checked at aqualified specialist workshop. You can no longer lock
or unlock the vehicle
using KEYLESS-GO. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 97) and replace it if necessary
(Y page 97).
If this does not work: X Lock (Y page 102) or unlock (Y page 103) the vehicle using the
emergency key element. There is interference from
apowerful source of radio waves.
X Lock (Y page 102) or unlock (Y page 103) the vehicle using the
emergency key element. There is
afault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the key.
X Have the vehicle and key checked at aqualified specialist work-
shop.
If the vehicle can also not be locked/unlocked using the remote
control function:
X Lock (Y page 102) or unlock (Y page 103) the vehicle using the
emergency key element.
X Have the vehicle and key checked at aqualified specialist work-
shop. You have lost
akey. X
Have the key deactivated at aqualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Key
99Opening and closing Z

Display messages
Possible causes/consequences and
M
MSolutions Telephone No ser‐
Telephone No ser‐
vice vice Your vehicl
eisoutside th enetwo rk provider' stransmitter/
receiver range.
X Wait until th emobile phone operational readiness symbol
appears in th emultifunction display. ¥
Top Top
up
upwasher
washer fluid
fluid The washer flui
dlevel in th ewasher flui dreservoir has dropped
belo wthe minimum.
X Top up th ewasher flui d(Ypage 383). Key
Display messages
Possible causes/consequences and
M
MSolutions Â
Key doe
snot
Key doe snot
belong to vehicle belong to vehicle You hav
eput th ewrong ke yint he ignition lock.
X Use th ecorrect key. Â
Replac
ekey
Replac ekey The ke
yneeds to be replaced.
X Visit aqualified specialist workshop. Â
Change key batter‐ Change key batter‐
ies ies The battery of th
eKEYLESS-GO ke yisdischarged.
X Replac ethe batterie s(Ypage 97). Â
Key not detected Key not detected
(re
dd isplay message) The KEYLESS-GO ke
yisnotin th evehicle.
Aw arnin gtonea lso sounds.
If th eengineiss witched off, you can no longer loc kthe vehicle
centrall yorstart th eengine.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Locate th eKEYLESS-GO key. As
tron gs ource of radi owave sisc ausin ginterfe rence, this means
that th eKEYLESS-GO ke yisnotrecognised when th eengineis
running.
Aw arnin gtonea lso sounds.
X Pull ove rand stop th evehicl esafely as soo naspossible, paying
attention to roa dand traffic conditions.
X Safeguar dthe vehicl eagainst rollin gaway (Y page 205).
X Inser tthe keyintot he ignition loc kand bring into ke ymode. 328
Display
messagesOn-boardcomputer an ddisplays

X
Switch on the hazard warning lamps
(Y page 145).
X Leave the key in position 2in the ignition
lock.
i Whe
ntowing with the hazard warning
lamps switche don, us ethe combination
switch as usua ltosignal achange of direc-
tion. In this case, onl ythe turn signal sfor
the desired direction flash. Whe nyou reset
the combination switch, the hazard warn-
ing lamps star tflashing again. Towin
gthe vehicle awa ywitht he rear
axl eraised
! Vehicles with 4MATI
Cmustn ot be towed
with the front or rea raxler aised ;otherwise,
the transmissio nmay be damaged.
! Vehicles with automatic transmission
mus tnot be towed with the rea raxler aised.
The car/traile rcombination may otherwise
swerve or eve noverturn.
! The ignition mus
tbes witche doff if you
are towing the vehicl ewitht he rea raxle
raised .Intervention by ESP ®
could other-
wise damag ethe brake system.
Onl yvehicle swithout 4MATIC can be
towed awa ywitht he rear axl eraised.
X Switch on the hazard warning lamps
(Y page 145).
X Mov ethe front wheel stothe straight-
ahea dposition.
X Turn the key in the ignition lock to position
0 and remove the key from the ignition
lock.
X Whe nleaving the vehicle, take the key or
the KEYLESS-GO key with you.
Whe ntowing your vehicl eawayw itht he rear
axl eraised ,itisi mportant tha tyou observe
the safety instructions (Y page 407). Transporting the vehicle
! Yo
um ay onl ysecure the vehicl ebythe
wheels, not by parts of the vehicl esuchas
axl eors teering components .Otherwise,
the vehicl ecould be damaged.
The towing eyes or traile rtow hitch can be
used to pull the vehicl eonto atraile rort rans-
porter if yo uwishtot ranspor tit.
X Vehicles with manual transmission:
depress the clutch peda lfully and shift to
neutral.
X Vehicles with automatic transmission:
turn the key to position 2in the ignition
lock.
X Shift the automatic transmissio ntoposi-
tion N.
As soon as the vehicle is loaded: X Prevent the vehicl efrom rolling away by
applying the parking brake.
X Vehicles with manual transmission:
depress the clutch peda lfully and engage
first or reverse gear.
X Vehicles with automatic transmission:
shift the automatic transmissio ntoposi-
tion P.
X Turn the key in the ignition lock to position
0 and remove the key from the ignition
lock.
X Secure the vehicle. Note
sfor 4MATIC vehicles
! Vehicles with 4MATI
Cmustn ot be towed
with the front or rea raxler aised ;otherwise,
the transmissio nmay be damaged.
If the vehicl ehastransmissio ndamageor
damag etothe front or rea raxle, have it trans-
ported on atransporter or trailer.
In the even tofdamage to the electrical
system
If the battery is defective, the automatic
transmissio nwillbel ocked in position P.To
shift the automatic transmissio ntoposition 410
Towin
gawayand tow-startingBreakdown assistance