2017 MERCEDES-BENZ S-Class COUPE change key battery

KEYLESS-GOstart function
Gene ral notes
Bear in min dthat th eengin ecan be started by
any of th evehicl eoccupant sif there is aSmart -
Key in th evehicl e (
Ypage 123).
Changing the settings ofthe locking
system
You can chang eth esetting sof th elocking sys-
tem. This mean sthat only th edriver's door and
th efuel filler flap are unlocke dwhen th evehicl e
is unlocked. This is useful if you frequentl ytravel
on your own .
XTo change th esetting: press and hold down
th e0036 and0037 buttons simultaneousl y
for approximately six seconds until th ebat -
tery chec klamp (
Ypage 75 )flashes twice .
If th esetting of th elocking system is changed
within th esignal range of th evehicle, pressing
th e0037 or0036 button:
Rlocks or
Runlocks th evehicl e
The SmartKey no wfunction sas follows :
XTo unlock: press the0036 buttononce .
XTo unlock centrally: press the0036 button
twice .
XTo lock: press the0037 button.
The KEYLESS-GO function scan be changed as
follows :
XTo unlock th edriver's door :touch th einner
surfac eof th edoor handle on th edriver's
door .
XTo unlock centrally: touch theinner surfac e
of th efront-passenger door handle.
XTo lock centrally: touch theouter sensor
surfac eon on eof th edoor handles .
XTo restoreth efactory settings: press and
hold th e0036 and0037 buttons simultane -
ousl yfor approximat
ely s
ix seconds until th e
battery chec klamp (Ypage 75) flashes
twice .
Mechanical key
Gene ral notes
If th evehicl ecan no longer be locke dor
unlocke dwit hth eSmartKey or KEYLESS-GO ,
use th emechanical key.
If you use th emechanical ke yto unloc kand
open th edriver's door ,th eanti-thef talarm sys-
te m will be triggered .Switc hoff th ealarm
(
Ypage 71) .
If you unloc kth evehicl eusin gth emechanical
key, th efuel filler flap will no tbe unlocke dauto -
matically.
XTo unlock th efuel filler flap: insert the
SmartKey int oth eignition lock.
Removing the mechanical key
XPush release catch 0043in th edirection of th e
arrow and at th esam etime remove mechan -
ical ke y0044 from th eSmartKey.
Fo rfurther information about :
RLocking/unlocking thedriver's door
(Ypage 79 )
RUnlocking th etrunk (Ypage 84 )
Inserting the mechanical key
XPush mechanical ke y0044 completely int oth e
SmartKey until it engage sand release
catch 0043is bac kin it sbasic position .
74SmartKey
Opening and closing

SmartKey battery
Important safety notes
GWARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatalinjury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately.
HEnvironmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separatelyand recycled to protect the
environment.
Dispose of batteries in an
environmentally friendly
manner. Take discharged
batteries to a qualified spe-
cialist workshop or a special
collection point for used bat-
teries.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National guide-
lines must be observed during disposal. In Cal-
ifornia, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/index.cfm.
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work-
shop.
Checking the battery
XPress the 0037or0036 button.
The battery is working properly if battery
check lamp 0043lights up briefly.
The battery is discharged if battery check
lamp 0043does not light up briefly.
XChange the battery (Ypage 75).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the 0037 or0036 button:
Rlocks or
Runlocks the vehicle
iYou can obtain a battery from any qualified
specialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the SmartKey
(Ypage 74).
XPress mechanical key 0044into the SmartKey
opening in the direction of the arrow until bat-
tery compartment cover 0043opens. Do not
hold battery compartment cover 0043closed
while doing so.
XRemove battery compartment cover 0043.
SmartKey75
Opening and closing
Z

ProblemPossible causes/consequences and0050Solutions
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of the
SmartKey.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
XLock or unlock the vehicle using the mechanical key (Ypage 79).
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
The engine cannot be
started using the Smart-
Key.The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary (Ypage 294).
or
XJump-start the vehicle (Ypage 295).
or
XConsult a qualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 75) and replace it if necessary
(Ypage 75).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key.XHave the SmartKey deactivated at a qualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
SmartKey77
Opening and closing
Z

Display messagesPossible causes/consequences and0050Solutions
Phone No ServiceYour vehicleis outside th enetwork provider' stransmitter/receiver
range.
XWait until th emobile phone operational readiness symbol appear s
in th emultifunction display.
00B2
Check Washer Fluid
The washer flui dlevel in th ewasher flui dreservoir has dropped belo w
th eminimum .
XAddwasher flui d (Ypage 278).
SmartKey
Display messagesPossible causes/consequences and 0050Solutions
00AF
KeyDoesNotBelongto Vehicl e
You haveput th ewrong SmartKey in th eignition lock.
XUse th ecorrec tSmartKey.
00AF
Tak eYou rKey fro mIgnition
The SmartKey is in th eignition lock.
a warning tone sounds
XRemove th eSmartKey.
00AF
Obtain aNew Key
The SmartKey needs to be replaced.
XVisit aqualified specialist workshop .
00AF
ReplaceKey Batter y
The SmartKey battery is discharged.
XChange thebattery (Ypage 75) .
00AF
Don't Forget You rKey
The SmartKey is notin th eignition lock. You hav eopened th edriver's
door wit hth eengin eswitched off . awarning tone sounds
This display message is displayed in th emultifunction display for a
maximum of 60 seconds and is simply areminder.
XTak eth eSmartKey wit hyou when you leav eth evehicle.
00AF
Key Not Detected(whit edisplay message )
The SmartKey is currentl yundetected.
XChange th elocation of th eSmartKey in th evehicle.
If th eSmartKey still canno tbe detected:
XInser tth eSmartKey int oth eignition loc kand tur nit to th edesire d
position .
230Display messages
On-board computer and displays

In order to ensure that the automatic transmis-
sion stays in positionNwhen towing the vehicle,
you must observe the following points:
XYou must use the SmartKey instead of the
Start/Stop button (Ypage 121).
XMake sure that the vehicle is stationary and
that the key is in position 0in the ignition lock.
XTurn the SmartKey to position 2in the ignition
lock.
XDepress and hold the brake pedal.
XShift the automatic transmission to position
N.
XRelease the brake pedal.
XRelease the electric parking brake.
XLeave the SmartKey in position 2in the igni-
tion lock.
XSwitch on the hazard warning lamps
(Ypage 106).
In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination switch
as usual. In this case, only the indicator lamps
for the direction of travel flash. After resetting
the combination switch, the hazard warning
lamp starts flashing again.
Transporting the vehicle
General notes
!When the vehicle is loaded for transport, the
front and rear axles must be stationary and on the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged.
!You may only secure the vehicle by the
wheels, not by parts of the vehicle such as axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting pur- poses.
XTurn the SmartKey to position 2in the ignition
lock.
XShift the automatic transmission to position
N.
As soon as the vehicle has been loaded:
XPrevent the vehicle from rolling away by
applying the electric parking brake.
XShift the automatic transmission to posi-
tion P.
XTurn the SmartKey to position 0in the ignition
lock and remove it.
XSecure the vehicle.
Notes on 4MATIC vehicles
!
Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised, as
doing so will damage the transmission.
Vehicles with 4MATIC may either be towed away with both axles on the ground or be loaded up
and transported.
If the vehicle's transmission, front, or rear axle is
damaged, have the vehicle transported on a
truck or trailer.
In the event of damage to the electrical sys-
tem: if the battery is defective, the automatic
transmission will be locked in position P. To shift
the automatic transmission to position N, you
must provide power to the vehicle's electrical
system in the same way as when jump-starting
(
Ypage 295).
Have the vehicle transported on a transporter or
trailer.
Tow-starting (emergency engine
starting)
!
Vehicles with automatic transmission must
not be tow-started. You could otherwise dam-
age the automatic transmission.
iInformation on "Jump-starting"
(Ypage 295).
300Towing and tow-starting
Breakdown assistance