2017 MERCEDES-BENZ GLS-Class SUV key battery

Axle load, permissible (trailer tow-
ing) ...................................................... 387
B
Back button ...................................... .288
Bag hook ............................................ 299
Ball coupling
Installing ........................................ 223
Removing ....................................... 227
BAS (Brake Assist System) ................. 64
Battery (SmartKey)
Checking .......................................... 77
Important safety notes .................... 77
Replacing ......................................... 77
Battery (vehicle)
Charging ........................................ 338
Display message ............................ 258
Important safety notes .................. 336
Jump starting ................................. 338
Overview ........................................ 336
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating ................. 238
Display message ............................ 265
Notes/function .............................. 207
Trailer towing ................................. 209
see Active Blind Spot Assist
Blootooth
®
Connecting a different mobile
phone ............................................ 292
BlueTEC
Adding DEF ....................................1 56
BlueTEC (DEF) ....................................3 81
Bluetooth
®
Searching for a mobile phone ........2 91
see also Digital Operator's Man-
ual ..................................................2 87
Telephony ...................................... 290
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 250
Notes ............................................. 382
Brake force distribution
see EBD (electronic brake force
distribution) Brake lamps
Display message ............................ 256
Brakes
ABS ..................................................6 3
Adaptive Brake Assist ...................... 65
BAS .................................................. 64
Brake fluid (notes) ......................... 382
Display message ............................ 245
High-performance brake system .... 166
Hill start assist ............................... 141
Impo
rtant safety notes .................. 164
Maintenance .................................. 165
Parking brake ................................ 160
Riding tips ...................................... 164
Warning lamp ................................. 276
Breakdown
Where will I find...? ........................ 331
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 34
Bulbs
see Replacing bulbs
C
CaliforniaImportant notice for retail cus-
tomers and lessees .......................... 26
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
360° camera ................................. 328
Car wash ........................................ 324
Carpets .......................................... 330
Display ........................................... 329
Exhaust pipe .................................. 328
Exterior lights ................................ 327
Gear or selector lever .................... 329
Interior ........................................... 329
Matte finish ................................... 326
Notes ............................................. 324
Paint .............................................. 326
Plastic trim .................................... 329
Power washer ................................ 325
Rear view camera .......................... 328
6Index

Exit position (3rd row of seats) ...... 101
Folding down/up (third row of
seats) ............................................... 99
Folding the 2nd row of seats
forward electrically ........................ 102
Folding the 2nd row of seats
forward manually ........................... 100
Folding the rear bench seat for-
wards/back ................................... 297
Important safety notes .................... 94
Overview .......................................... 94
Seat heating problem .................... 105
Seat ventilation problem ................ 105
Storing settings (memory func-
tion) ............................................... 110
Switching seat heating on/off ....... 103
Switching seat ventilation on/off .. 104
Section
Sliding sunroof ................................. 89
Selector lever
Cleaning ......................................... 329
Sensors (cleaning instructions) ....... 328
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 382
Coolant (engine) ............................ 382
DEF special additives ..................... 381
Engine oil ....................................... 381
Fuel ................................................ 379
Important safety notes .................. 378
Refrigerant (air-conditioning sys-
tem) ............................................... 383
Washer fluid ................................... 383
Setting the air distribution ............... 131
Setting the airflow ............................ 131
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 287
Setting the language
see also Digital Operator's Man-
ual .................................................. 287
Setting the time
see also Digital Operator's Man-
ual .................................................. 287
Settings
Factory (on-board computer) ......... 240
On-board computer ....................... 238 SETUP (on-board computer)
............. 241
Side impact air bag ............................. 48
Side marker lamp (display mes-
sage) ................................................... 256
Side windows
Cle
aning ......................................... 327
Convenience closing feature ............ 87
Convenience opening feature .......... 87
Hinged side windows ....................... 86
Important safety information ........... 85
Opening/closing .............................. 86
Overview .......................................... 85
Problem (malfunction) ..................... 89
Resetting ......................................... 88
Reversing feature ............................. 86
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 287
Sliding sunroof
Important safety notes .................... 89
Opening/closing .............................. 90
Problem (malfunction) ..................... 92
Resetting ......................................... 91
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 77
Changing the programming ............. 76
Checking the battery ....................... 77
Convenience closing feature ............ 88
Convenience opening feature .......... 87
Display message ............................ 273
Door central locking/unlocking ....... 74
Important safety notes .................... 74
KEYLESS-GO start function .............. 76
Loss ................................................. 78
Mechanical key ................................ 76
Overview .......................................... 74
Positions (ignition lock) ................. 138
Problem (malfunction) ..................... 78
Starting the engine ........................ 140
Smartphone
Starting the engine ........................ 140
SMS
see also Digital Operator's Man-
ual .................................................. 287
Snow chains
Information .................................... 348
Index19

Trailer towingActive Blind Spot Assist ................. 213
Active Lane Keeping Assist ............ 215
Blind Spot Assist ............................ 209
Permissible trailer loads and
drawbar noseweights ..................... 227
Transfer case ..................................... 153
Transmission
see Automatic transmission
Transmission position display ......... 148
Transporting the vehicle .................. 343
Traveling uphill
Brow of hill ..................................... 171
Driving downhill ............................. 172
Maximum gradient-climbing capa-
bility ...............................................1 71
Trim pieces (cleaning instruc-
tions) ..................................................3 30
Trip computer (on-board com-
puter) ..................................................2 32
Trip odometer
Calling up ....................................... 232
Resetting (on-board computer) ...... 233
Trunk
see Tailgate
Turn signals
Display message ............................ 256
Replacing bulbs (front) ................... 119
Switching on/off ........................... 113
Two-way radio
Frequencies ................................... 376
Installation ..................................... 376
Transmission output (maximum) .... 376
TWR (Tongue Weight Rating) (defi-
nition) ................................................. 366
Type identification plate
see Vehicle identification plate
U
UnlockingEmergency unlocking ....................... 81
From inside the vehicle (central
unlocking button) .............................8 0
Upshift indicator (on-board com-
puter, Mercedes-AMG vehicles) .......241 USB devices
Connecting to the Media Inter-
face ............................................... 292
V
Vanity mirror (in the sun visor) ........304
Vehicle
Correct use ...................................... 29
Data acquisition ............................... 30
Display message ............................ 270
Equipment ....................................... 26
Individual settings .......................... 238
Limited Warranty .............................3 0
Loading .......................................... 356
Locking (in an emergency) ............... 81
Locking (SmartKey) .......................... 74
Lowering ........................................ 370
Maintenance .................................... 27
Operating safety .............................. 28
Parking .......................................... 159
Parking for a long period ................ 162
Pulling away ................................... 141
Raising ........................................... 368
Reporting problems ......................... 29
Securing from rolling away ............ 367
Towing away .................................. 341
Transporting .................................. 343
Unlocking (in an emergency) ........... 81
Unlocking (SmartKey) ...................... 74
Vehicle data ................................... 384
Vehicle battery
see Battery (vehicle)
Vehicle data ....................................... 384
Vehicle data (off-road driving)
Approach/departure angle ............ 386
Fording depth ................................ 385
Maximum gradient climbing abil-
ity .................................................. 386
Vehicle dimensions ........................... 384
Vehicle emergency locking ................ 81
Vehicle identification number
see VIN
Vehicle identification plate .............. 377
Vehicle level
AIRMATIC ...................................... 188
Vehicle level (display message) ....... 261
Vehicle tool kit .................................. 331
Index23

Up to a speed of approximately 44 mph
(70 km/h) the Active Brake Assist with cross-
traffic function assists you with braking in haz-
ardous situations with:
Rstationary obstacles in the path of the vehicle,
e.g. stopped or parked vehicles
Rstationary pedestrians in the path of the vehi-
cle
Robstacles crossing your path that move in the
detection range of the sensors and are detec-
ted
XKeep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
You can prevent the intervention of Active Brake
Assist with cross-traffic function at any time by:
Rdepressing the accelerator pedal further
Ractivating kickdown
Rreleasing the brake pedal
The braking application of Active Brake Assist
with cross-traffic function is ended automati-
cally if:
Ryou maneuver to avoid the obstacle
Rthere is no longer a risk of collision
Rthere is no longer an obstacle detected in
front of your vehicle
STEER CONTROL
General information
STEER CONTROL helps you by transmitting a
noticeable steering force to the steering wheel
in the direction required for vehicle stabilization.
This steering assistance is provided in particular
if:
Rboth right wheels or both left wheels are on a wet or slippery road surface when you brake
Rthe vehicle starts to skid
Important safety notes
iObserve the "Important safety notes" sec-
tion (Ypage 63). No steering assistance is provided from STEER
CONTROL, if:
RESP®is deactivated
RESP®is malfunctioning
Rthe steering is malfunctioning
If ESP®is malfunctioning, you will be assisted
further by the electrical power steering.
Protection against theft
Immobilizer
XTo activate with the SmartKey: remove the
SmartKey from the ignition lock.
XTo activate with KEYLESS-GO: switch the
ignition off and open the driver's door.
XTo deactivate: switch on the ignition.
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Anyone
can start the engine if a valid SmartKey has been
left inside the vehicle.
iThe 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)
72Protection against theft
Safety

If activated in the multimedia system, the loca-
tor lighting also lights up in the dark (see sepa-
rate operating instructions).
XTo open the tailgate automatically from
outside the vehicle:press and hold theF
button until the tailgate opens.
Vehicles with KEYLESS-GO:
XTo close the tailgate automatically from
outside the vehicle: if the SmartKey is loca-
ted in the immediate vicinity of the vehicle,
press the Fbutton on the SmartKey.
When the tailgate 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 KEY-
LESS-GO key in the vehicle (
Ypage 140).
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
& 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).
KEYLESS-GO checks whether a valid SmartKey
is in the vehicle by periodically establishing a
radio connection between the vehicle and the
SmartKey. This happens:
Rwhen starting the engine
Rwhile driving
Rwhen the external door handles are touched
Rduring convenience closing
XTo unlock the vehicle: touch the inner sur-
face of the door handle.
XTo lock the vehicle: touch sensor surface :
or ;.
Make sure that you do not touch the inner
surface of the door handle.
XConvenience closing feature: touch
recessed sensor surface ;for an extended
period.
Further information on the convenience closing
feature (
Ypage 87).
If you pull on the handle of the tailgate, only the cargo compartment of the vehicle is unlocked.
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.
XTo deactivate: press the&button on the
SmartKey twice in rapid succession.
The battery check lamp of the SmartKey
flashes twice briefly and lights up once, KEY-
LESS-GO is deactivated (
Ypage 77).
XTo activate: press any button on the Smart-
Key.
or
XInsert the SmartKey into the ignition lock.
KEYLESS-GO and all of its associated features
are available again.
SmartKey75
Opening and closing
Z

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 140).
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
alone.
XTo change th esetting: press and hold down
th e% and& buttons simultaneousl y
for about six seconds until th ebattery indica-
to rlamp flashes twice (
Ypage 77).
If th esetting of th elocking system is changed
within th esignal range of th evehicle, pressing
th e& or% button:
Rlocks or
Runlocks th evehicl e
The SmartKey no wfunction sas follows :
XTo unlock: press the% buttononce .
XTo unlock centrally: press the% button
twice .
XTo lock centrally: press the& button.
The KEYLESS-GO function is changed as fol -
lows :
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 edoor handle on th efront-passenger
door or th erear door .
XTo lock centrally: touch theouter sensor
surfac eon on eof th edoor handles
(
Ypage 75) .
XTo restor eth efactory settings: press and
hold down th e% and& buttons simul-
taneously for approximately six seconds until
th ebattery chec klamp flashes twice
(
Ypage 77) .
Mechanical key
Gene ral notes
If th evehicl ecan no longer be locke dor
unlocke dwit hth eSmartKey or wit hKEYLESS -
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 72) .
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 :in th edirection of th e
arrow and at th esam etime remove mechan -
ical ke y; from th eSmartKey.
Fo rfurther information about :
Runlocking thedriver's door (Ypage 81)
Runlocking thecargo compartmen t
(Ypage 85)
Rlocking th evehicl e (Ypage 81)
Inserting the mechanical key
XPush mechanical ke y; completely int oth e
SmartKey until it engage sand release
catch :is bac kin it sbasic position .
76SmartKey
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 &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
XChange the battery (Ypage 77).
If the SmartKey battery is checked within the
signal reception range of the vehicle, pressing
the & or% button:
Rlocks or
Runlocks the vehicle
iYou can get a battery at any qualified spe-
cialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
XTake the mechanical key out of the SmartKey
(Ypage 76).
XPress mechanical key ;into the SmartKey
opening in the direction of the arrow until bat-
tery compartment cover :opens. Do not
hold battery compartment cover :closed
while doing so.
XRemove battery compartment cover :.
SmartKey77
Opening and closing
Z

XRepeatedly tap theSmartKey against your
palm until battery =falls out .
XInsertth ene wbattery wit hth epositive ter-
minal facing upwards. Use alint-free cloth to
do so.
XMak esur ethat th esurfac eof th ebattery is
free of lint, grease and other contaminants.
XInser tth efron ttab sof battery compartmen t
cover :intoth ehousing first and then press
to close it .
XInsertmechanical ke y; intoth eSmartKey
(Ypage 76).
XChec kth efunction of all SmartKey buttons on
th evehicle.
Problems with the SmartKey
ProblemPossible causes/consequences and MSolutions
You can no longer lockor
unlock th evehicl eusin g
th eSmartKey.The SmartKey battery is discharged or nearly discharged.
XChec kth eSmartKey battery (Ypage 77) and replace it if necessar y
(Ypage 77).
If this does no twork:
XUnloc k (Ypage 81 )or loc k (Ypage 81 )th evehicl eusin gth e
mechanical key.
There is interferenc efrom apowerful source of radi owaves.
XUnloc k (Ypage 81) or loc k (Ypage 81)th evehicl eusin gth e
mechanical key.
The SmartKey is faulty.
XUnloc k (Ypage 81 )or loc k (Ypage 81) th evehicl eusin gth e
mechanical key.
XHav eth eSmartKey checke dat aqualified specialist workshop.
You can no longer loc kor
unlock th evehicl eusin g
KEYLESS-GO .KEYLESS-GO was deactivated.
XReactivateKEYLESS-GO (Ypage 75).
The SmartKey battery is discharged or nearly discharged.
XCheckth eSmartKey battery (Ypage 77) and replace it if necessar y
(Ypage 77).
If this does no twork:
XUnloc k (Ypage 81 )or loc k (Ypage 81 )th evehicl eusin gth e
mechanical key.
78SmartKey
Opening and closing