key battery MERCEDES-BENZ S CLASS 2017 Owners Manual

Switching off (ATA) .......................... 76
Switching the function on/off
(ATA) ................................................ 76
Alarm system
see ATA (Anti-Theft Alarm system)
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Armrest
Stowage compartment .................. 283
Ashtray ............................................... 294
Assistance display (on-board com-
puter) .................................................. 221
Assistance menu (on-board com-
puter) .................................................. 221
ASSYST PLUS
Displaying a service message ........ 318
Hiding a service message .............. 318
Resetting the service interval dis-
play ................................................ 318
Service message ............................ 318
Special service requirements ......... 318
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 76
Function ........................................... 76
Switching off the alarm .................... 76
ATTENTION ASSIST
Activating/deactivating ................. 223
Display message ............................ 245
Function/notes ............................. 198
Authorized Mercedes-Benz Center
see Qualified specialist workshop
Authorized workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 241
see Lights
Automatic car wash (care) ............... 319
Automatic engine start (ECO start/
stop function) .................................... 149
Automatic engine switch-off (ECO
start/stop function) .......................... 149
Automatic headlamp mode .............. 124
Automatic transmission
Accelerator pedal position ............. 155
Automatic drive program ............... 156 Changing gear ............................... 155
DIRECT SELECT lever ..................... 152
Display message ............................ 254
Drive program display .................... 154
Driving tips .................................... 155
Emergency running mode .............. 159
Engaging drive positi on .................. 153
Eng ag
ing neutral ............................ 153
Engaging park position automati-
cally ............................................... 152
Engaging reverse gear ................... 153
Engaging the park position ............ 152
Kickdown ....................................... 155
Manual drive program .................... 157
Manual drive program (Mercedes-
AMG vehicles) ................................ 158
Oil temperature (on-board com-
puter, Mercedes-AMG vehicles) ..... 226
Overview ........................................ 152
Problem (malfunction) ................... 159
Program selector button ................ 155
Pulling away ................................... 148
Starting the engine ........................ 147
Steering wheel paddle shifters ...... 156
Transmission position display ........ 154
Transmission positions .................. 154
Automatic transmission emer-
gency mode ....................................... 159
AUX (audio)
Notes/socket ................................ 279
B
Back button ....................................... 270
Backup lamp
Display message ............................ 241
Bag hook ............................................ 287
BAS (Brake Assist System) ................. 66
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/notes ................................ 67
BAS PLUS with Cross-Traffic Assist
(Brake Assist PLUS with Cross-
Traffic Assist)
Important safety notes .................... 67
Battery (SmartKey)
Checking .......................................... 80
Important safety notes .................... 80 Index 5

Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 269
Setting the language
see also Digital Operator's Man-
ual .................................................. 269
Setting the time
see also Digital Operator's Man-
ual .................................................. 269
Settings
Factory (on-board computer) ......... 226
On-board computer ....................... 221
SETUP (on-board computer) ............ .2 26
Side impact air bag ............................ .5 0
Side marker lamp (display mes-
sage) ................................................... 241
Side windows
Cleaning ......................................... 322
Convenience closing feature ............ 92
Convenience opening feature ......... .9 2
Important safety information ........... 90
Opening/closing .............................. 91
Problem (malfunction) .................... .9 3
Resettin g ........................................ .9 3
Reversin g feature ............................ .9 1
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 269
Skibag ................................................ 285
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 80
Changing the programming ............ .7 9
Checking the battery ...................... .8 0
Convenience closing feature ............ 92
Convenience opening feature .......... 92
Dis play message ............ ... ............. 257
D
oor central locking/unlocking ...... .7 7
Important safety notes .................... 77
KEYLESS-GO start function .............. 79
Loss ................................................ .8 1
Mechanical key ................................ 79
Overview .......................................... 77
Positions (ignition lock) ................. 145
Problem (malfunction) ..................... 81
Starting the engine ........................ 147 Smartphone
Starting the engine ........................ 147
SMS
see also Digital Operator's Man-
ual .................................................. 269
Snow chains ...................................... 345
Sockets
Center console .............................. 296
General notes ................................ 296
Rear compartment ........................ .2 96
Trunk ............................................. 297
Sound
Switching on/off ........................... 270
Special seat belt retractor .................. 59
Specialist workshop ............................ 30
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 225
Digital ............................................ 215
In the Instrument cluster ................. 35
Segments ...................................... 210
Selecting the display unit .............. .2 25
Standing lamps
Display message ............................ 241
Switching on/off ........................... 125
Start/Stop button
General notes ................................ 145
Key positions ................................. 146
Removing ....................................... 146
Starting the engine ........................ 147
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 146
STEER CONTROL .................................. 75
Ste e
ring
Display message ............................ 257
Warning lamps ............................... 268
Steering Assist
see DISTRONIC PLUS
Steering Assist and Stop&Go Pilot
(DISTRONIC PLUS)
Display message ............................ 250
Steering assistant STEER CON-
TROL
see STEER CONTROL Index 19

i The immobilizer is always deactivated when
you start the engine.
In the event that the engine cannot be started
(yet the vehicle's battery is charged), the sys-
tem is not operational. Contact an authorized
Mercedes-Benz Center or call
1-800-FOR-MERCedes (in the USA) or
1-800-387-0100 (in Canada).
ATA (anti-theft alarm system) X
To arm: lock the vehicle with the SmartKey or
KEYLESS-GO.
Indicator lamp C flashes. The alarm system
is armed after approximately ten seconds. X
To disarm: unlock the vehicle with the Smart-
Key or KEYLESS-GO.
or X
Insert the SmartKey into the ignition lock.
or X
Press the Start/Stop button.
The SmartKey must be in the vehicle.
A visual and audible alarm is triggered if the
alarm system is armed and you open: R
a door R
the vehicle with the mechanical key R
the trunk lid R
the hood X
To stop the alarm with the SmartKey:
press the 6 or 7 button on the Smart-
Key.
The alarm is stopped.
or X
Remove the Start/Stop button from the igni-
tion lock. X
Insert the SmartKey into the ignition lock.
The alarm is stopped. X
To stop the alarm using KEYLESS-GO:
grasp the outside door handle. The SmartKey
must be outside the vehicle.
The alarm is stopped.
or X
Press the Start/Stop button on the dash-
board. The SmartKey must be inside the vehi-
cle.
The alarm is stopped.
The alarm is not switched off, even if you close
the open door that triggered it, for example.
i If the alarm continues for more than
30 seconds, the mbrace emergency call sys-
tem automatically notifies the Customer
Assistance Center. This is done either by text
message or data connection.
The emergency call system sends a message
or establishes a data connection provided
that: R
you have subscribed to the mbrace service. R
the mbrace service has been activated
properly. R
the necessary mobile phone network is
available.76
Protection against theft
Safety

signal can be activated and deactivated via the
multimedia system; see the Digital Operator's
Manual.
You will receive visual and acoustic locking con-
firmation if all components were able to be
locked.
When the locator lighting is activated via the
multimedia system, it lights up when it is dark
after the vehicle is unlocked with the SmartKey;
see the Digital Operator's Manual. X
To open the trunk lid automatically from
outside the vehicle: press and hold the T
button until the trunk lid opens. X
To open the trunk lid automatically from
outside the vehicle: if the SmartKey is loca-
ted in the immediate vicinity of the vehicle,
press the T button on the SmartKey.
When the trunk lid closes you can then
release the button.
KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a Smart-
Key in the vehicle ( Y
page 147).
Locking/unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you only need carry the
SmartKey with you. You can combine the func-
tions of KEYLESS-GO with those of a conven-
tional SmartKey. Unlock the vehicle by using
KEYLESS-GO, for instance, and lock it using the
7 button on the SmartKey.
The driver's door and the door at which the han-
dle is used, must both be closed. The SmartKey
must be outside the vehicle. When locking or
unlocking with KEYLESS-GO, the distance
between the SmartKey and the corresponding
door handle must not be greater than 3 ft (1 m).
A brief radio connection between the vehicle
and the SmartKey determines whether a valid
SmartKey is in, or in the direct vicinity of, the
vehicle. This occurs, for example: R
when starting the engine R
while driving R
when using HANDS-FREE ACCESS R
when the external door handles are touched R
during convenience closing
X
To unlock the vehicle: touch the inner sur-
face of the door handle. X
To lock the vehicle: touch sensor surface C
or D .
Make sure that you do not touch the inner
surface of the door handle. X
Convenience closing feature: touch
recessed sensor surface D for an extended
period.
Further information on the convenience clos-
ing feature ( Y
page 92). X
To unlock the trunk lid: pull the handle on
the trunk lid.
Deactivating and activating If you do not intend to use a SmartKey for an
extended period of time, you can deactivate the
KEYLESS-GO function of the SmartKey. The
SmartKey will then use very little power, thereby
conserving battery power. For the purposes of
activation/deactivation, the vehicle must not be
nearby. X
To deactivate: press the 7 button on the
SmartKey twice in rapid succession.
The battery check lamp ( Y
page 80) of the
SmartKey flashes twice briefly and lights up
once, then KEYLESS-GO is deactivated. X
To activate: press any button on the Smart-
Key.
or X
Insert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features
are available again.78
SmartKey
Opening and closing

KEYLESS- GO start function
Gene ra l notesBear in min d that th e engin e can be started by
any of th e vehicl e occupant s if there is a Smart -
Key in th e vehicl e ( Y
page 147).
Changing the settings of the locking
system You can chang e th e setting s of th e locking sys-
tem. This mean s that only th e driver's door and
th e fuel filler flap are unlocke d when th e vehicl e
is unlocked. This is useful if you frequentl y travel
on your own .X
To change th e setting: press and hold down
th e 6 and 7 buttons simultaneousl y
for approximately six seconds until th e bat -
tery chec k lamp ( Y
page 80 ) flashes twice .
If th e setting of th e locking system is changed
within th e signal range of th e vehicle, pressing
th e 7 or 6 button:R
locks or R
unlocks th e vehicl e
The SmartKey no w function s as follows :X
To unlock: press th e 6 butto n once .X
To unlock centrally: press th e 6 butto n
twice .X
To lock: press th e 7 button.
The KEYLESS-GO function s can be changed as
follows :X
To unlock th e driver's door : touch th e inner
surfac e of th e door handle on th e driver's
door .X
To unlock centrally: touch th e inner surfac e
of th e door handle on th e front-passenger
door or th e rear door .X
To lock centrally: touch th e outer sensor
surfac e on on e of th e door handles .X
To restor e th e factory settings: press and
hold th e 6 and 7 buttons simu ltane -
o
usl y for approximately six seconds until th e
battery chec k lamp ( Y
page 80) flashes
twice . Mechanical key
Gene ra l notesIf th e vehicl e can no longer be locke d or
unlocke d wit h th e SmartKey or KEYLESS-GO ,
use th e mechanical key.
If you use th e mechanical ke y to unloc k and
open th e driver's door , th e anti-thef t alarm sys-
te m will be triggered . Switc h off th e alarm
( Y
page 76) .
If you unloc k th e vehicl e usin g th e mechanical
key, th e fuel filler flap will no t be unlocke d auto -
matically. X
To unlock th e fuel filler flap: insert th e
SmartKey int o th e ignition lock.
Removing the me chanical key
X
Push release catch C in th e direction of th e
arrow and at th e sam e time remove mechan -
ical ke y D from th e SmartKey.
Fo r further information about :R
Locking/unlocking th e driver's door
( Y
page 84 ) R
Unlocking th e trunk ( Y
page 90 )
Inserting the me chanical key X
Push mechanical ke y D completely int o th e
SmartKey until it engage s and release
catch C is bac k in it s basic position .SmartKey 79
Opening and closing Z

SmartKey battery
Important safety notes
G WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
H Environmental note
Batteries contain dangerous
substances. It is against the
law to dispose of them with
the household rubbish. They
must be collected separately
and 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 X
Press the 7 or 6 button.
The battery is working properly if battery
check lamp C lights up briefly.
The battery is discharged if battery check
lamp C does not light up briefly. X
Change the battery ( Y
page 80).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the 7 or 6 button: R
locks or R
unlocks the vehicle
i You can obtain a battery from any qualified
specialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery. X
Take the mechanical key out of the SmartKey
( Y
page 79).
X
Press mechanical key D into the SmartKey
opening in the direction of the arrow until bat-
tery compartment cover C opens. Do not
hold battery compartment cover C closed
while doing so. X
Remove battery compartment cover C .80
SmartKey
Opening and closing

X
Repeatedly tap th e SmartKey against your
palm until battery

Problem
Possible causes/consequences and P Solutions
KEYLESS-GO is malfunctioning. X
Lock/unlock the vehicle using the remote control function of the
SmartKey. X
Have 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: X
Lock or unlock the vehicle using the mechanical key ( Y
page 84).X
Have 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. X
Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work: X
Check the starter battery and charge it if necessary ( Y
page 334).
or X
Jump-start the vehicle ( Y
page 335).
or X
Consult 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. X
Unlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged. X
Check the SmartKey battery ( Y
page 80) and replace it if necessary
( Y
page 80).
If this does not work: X
Start your vehicle with the SmartKey in the ignition lock.
There is interference from a powerful source of radio waves. X
Start your vehicle with the SmartKey in the ignition lock.
You have lost a Smart-
Key. X
Have the SmartKey deactivated at a qualified specialist workshop. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.
You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers. X
If necessary, have the locks changed as well.82
SmartKey
Opening and closing

X
To deactivate: open the glove box.X
Push the switch to position C .
If the vehicle is unlocked centrally, the trunk
will also be unlocked.
Unlocking the trunk using the
mechanical key
General notes Use the mechanical key if the trunk lid can no
longer be unlocked: R
using the SmartKey R
using HANDS-FREE ACCESS R
using the remote operating switch in the door
control panel
! The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
( Y
page 376).
Unlocking X
Insert the mechanical key into the trunk lid
lock as far as it will go.
X
Turn the mechanical key from position G
counter-clockwise as far as it will go to posi-
tion H .
The trunk lid is released. X
Turn the mechanical key back to position G
and remove it. Unlocking the trunk from the inside
using the emergency release button
You can unlock the trunk lid from the inside
using emergency release button C .X
Press emergency release button C briefly.
The trunk lid unlocks and opens.
The trunk lid can be unlocked using emergency
release button C when stationary or when the
vehicle is in motion.
Emergency release button C does not unlock
the trunk lid if the battery is disconnected or
discharged.
Emergency release button C flashes:R
for 30 minutes after the trunk lid is opened R
for 60 minutes after the trunk lid is closed
Side windows
Important safety notes
G WARNING
While opening the side windows, body parts
could become trapped between the side win-
dow and the door frame as the side window
moves. There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
body becomes trapped, release the switch or
pull the switch to close the side window again.
G WARNING
While closing the side windows, body parts in
the closing area could become trapped. There
is a risk of injury.90
Side windows
Opening and closing

When the engine is running and the vehicle is
stationary: if you move the selector lever from a
driving position to P , the daytime running lamps
and low-beam headlamps go out after three
minutes.
When the engine is running, the vehicle is sta-
tionary and in bright ambient light: if you turn the
light switch to the ` position, the daytime
running lamps and parking lamps switch on.
If the engine is running and you turn the light
switch to the X position, the manual settings
take precedence over the daytime running
lamps.
Low-beam headlamps
G WARNING
When the light switch is set to X , the low-
beam headlamps may not be switched on
automatically if there is fog, snow or other
causes of poor visibility due to the weather
conditions such as spray. There is a risk of an
accident.
In such situations, turn the light switch to
X .
Even if the light sensor does not detect that it is
dark, the parking lamps and low-beam head-
lamps switch on when the ignition is switched on
and the light switch is set to the X position.
This is a particularly useful function in the event
of rain and fog. X
To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to posi-
tion 2 or start the engine.X
Turn the light switch to the X position.
The green X indicator lamp in the instru-
ment cluster lights up.
Parking lamps
! If the battery charge is very low, the parking
lamps or standing lamps are automatically
switched off to enable the next engine start.
Always park your vehicle safely and in a well lit
area, in accordance with the relevant legal
stipulations. Avoid using the ` parking
lamps over a period of several hours. If pos-
sible, switch on the right-hand d or left-
hand c standing lamps. X
To switch on the parking lamps: turn the
light switch to the ` position.
The green ` indicator lamp on the instru-
ment cluster lights up.
Standing lamps Switching on the standing lamps ensures the
corresponding side of the vehicle is illuminated. X
To switch on the standing lamps: turn the
SmartKey to position 0 in the ignition lock or
remove the SmartKey. X
Turn the light switch to the c (left-hand
side of the vehicle) or d (right-hand side of
the vehicle) position.
Combination switch
C
High-beam headlamps D
Turn signal, right