2017 MERCEDES-BENZ GLS refrigerant

Roof linin g ...................................... 33 0
Se at belt ........................................ 330
Seat cover .................................... .3 30
Sensors ......................................... 328
Side running board ........................ 327
Steering wheel ............................... 329
Trim pieces ................................... .3 30
Washing by hand ........................... 325
Wheels .......................................... .3 26
Windows ........................................ 327
Wiper blades .................................. 327
Wooden trim .................................. 330
Cargo compartment cover
Notes/how to use ......................... 300
Cargo compartment enlargement
Important safety notes .................. 297
Cargo compartment floor
Important safety notes .................. 301
Opening/closing ............................ 301
Stowage well (under) ..................... 301
Cargo tie down rings ......................... 299
CD
see also Digital Operator's Man-
ual ................................................. .2 87
CD player (on-board computer) ....... .2 35
Center console
Lower section .................................. 37
Upper section .................................. 36
Central locking
Automatic locking (on-board com-
puter) ............................................. 239
Locking/unlocking (SmartKey) ....... .7 4
Child
Restraint system .............................. 58
Child seat
Forward-facing restraint system ...... 61
LATCH-type (ISOFIX) child seat
anchors ............................................ 59
On the front-passenger seat ............ 61
Rearwar d-fac ing restraint system .... 61
Top
Tether ...................................... .6 0
Child-proof locks
Important safety notes .................... 61
Rear doors ...................................... .6 2
Children
Special seat belt retractor .............. .5 7
Cigarette lighter ................................ 306 Cleaning
Mirror turn signal .......................... .3 27
Trailer tow hitch ............................ .3 29
Climate control
3-zone automatic climate control
with additional rear-compartment
climate control ............................... 127
Automatic climate control (3-
zone) .............................................. 125
Controlling automatically .............. .1 30
Cooling with air dehumidification .. 130
Defrosting the windows ................. 132
Defrosting the windshield .............. 132
Dual-zone automatic climate con-
trol ................................................. 123
General notes ................................ 123
Indicator lamp ................................ 130
Ionization ....................................... 134
Maximum cooling .......................... 132
Notes on using the automatic cli-
mate control .................................. 129
Overview of systems ..................... .1 23
Problem with the rear window
defroster ........................................ 133
Problems with cooling with air
dehumidification ............................ 130
Rear control panel ......................... 125
Rear control panel (3-zone auto-
matic climate control with addi-
tional rear-compartment climate
control) .......................................... 127
Refrigerant ..................................... 383
R ef
rigerant filling capacity ............. 384
Setting the air distribution ............. 131
Setting the air vents ..................... .1 34
Setting the airflow ......................... 131
Setting the climate mode (AIR
FLOW) ............................................ 130
Setting the temperature ................ 131
Switching air-recirculation mode
on/off ............................................ 133
Switching on/off ........................... 129
Switching residual heat on/off ...... 133
Switching the rear window
defroster on/off ............................ 133
Switching the ZONE function
on/off ............................................ 132
Coat hooks ......................................... 300 Index 7

Function/notes ............................. 193
Important safety notes .................. 193
Parking .......................................... 195
PASSENGER AIR BAG
Display message ............................ 254
Indicator lamps ................................ 42
Problem (malfunction) ................... 254
Pets in the vehicle ............................... 62
Phone book
see also Digital Operator's Man-
ual .................................................. 287
Plastic trim (cleaning instruc-
tions) .................................................. 329
Power locks ......................................... 81
Power washers .................................. 325
Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection)
Display message ............................ 251
Operation ......................................... 55
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS)
Display message ............................ 251
Operation ......................................... 56
Protection against theft
ATA (Anti-Theft Alarm system) ......... 72
Immobilizer ...................................... 72
Protection of the environment
General notes .................................. 25
Pulling away
Automatic transmission ................. 141
General notes ................................ 141
Hill start assist ............................... 141
Trailer ............................................ 141
Q
QR code
Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 30
Qualified specialist workshop ........... 29
R
RACETIMER (on-board computer) .... 241
Radiator cover ................................... 320 Radio
Selecting a station ......................... 234
see separate operating instructions
Radio mode
see also Digital Operator's Man-
ual .................................................. 287
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 28
Reading lamp ..................................... 116
Rear bench seat
Folding forwards/back .................. 298
Rear compartment
Exit/entry position (3rd row of
seats) ............................................. 100
Setting the air vents ...................... 135
Setting the temperature ................ 131
Rear fog lamp
Display message ............................ 256
Switching on/off ........................... 113
Rear Seat Entertainment System
AUX jacks ...................................... 293
AUX jacks CD/DVD drive .............. 293
Rear seats
Adjusting ......................................... 98
Display message ............................ 272
Rear view camera
Cleaning instructions ..................... 328
Display in the multimedia system .. 198
Function/notes ............................. 197
Switching on/off ........................... 198
Rear window defroster
Problem (malfunction) ................... 133
Switching on/off ........................... 133
Rear window wiper
Replacing the wiper blade .............. 121
Switching on/off ........................... 120
Rear-view mirror
Anti-glare (manual) ........................ 107
Dipping (automatic) ....................... 109
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 383
Refueling
Fuel gauge ....................................... 34
Important safety notes .................. 153
Refueling process .......................... 154
see Fuel Index 17

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
C onvenience 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 Index 19

Comp ly wit h the impo rtant safety notes for ser-
vice products when han dlin g coolant
( Y
page 378).
The coolant is a mixture of water and ant i-
freeze/corrosion inh ibit or. It is respon sible for
the foll owin g:R
Anti-corrosion protection R
Antifreeze protection R
Raisin g the boiling poin t
If the coolant has antifreeze protection down to
-35 ‡ (-37 †), the boilin g poin t of the coolant
during operation is appr oximately 266 ‡
(130 †).
The antifreeze concentrate /c orrosion inh ibit or
concentration in the engine co olin g system
sho uld: R
be at least 50 %. This will protect the engine
co olin g system against freezing down to
approximate ly -35 ‡ (-37 †).R
not exceed 55% (antifreeze protection down
to -49 ‡ [-45 †]). Otherwise, heat will not be
dissipat ed as effectively.
Mercedes-Benz recommen ds an antifreeze/
corrosion inh ibit or concentrate in accordance
wit h MB Spe cifications for Service Products
310.1.
i When the veh icle is first deliv ere d, it is fille d
wit h a coolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked wit h every mainte-
nance interval at a qualif ied spec ialist work-
sho p.
Filling capacities Model Capacity
Mercedes ‑ AMG
vehicles Approx. 11.9 US qt
(11.3 l)
GLS 350 d 4MAT IC
Approx. 12.2 US qt
(11.5 l)
GLS 550 4MATIC
Approx. 12.0 US qt
(11.4 l)
All other mod els
Approx. 10.3 US qt
(9.7 l) Windshield washer system
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact wit h hot engine compo-
nents or the exhaust system. There is a risk of
fire and injury.
Make sure that no windshie ld washer con-
centrate is spilled next to the filler neck.
! On ly MB SummerFit and MB WinterF it
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionized water. Other-
wise, the level sensor may give a false reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 378).
At temperatures above freezing: X
Fill the washer fluid reservoir wit h a mixture of
water and windshie ld washer fluid, e.g. MB
SummerFit.
Add 1 part MB SummerFit to 100 parts water.
At temperatures below freezing: X
Fill the washer fluid reservoir wit h a mixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
i Add windshie ld washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year roun d.
Climate control system refrigerant
Important safety notes The clim ate control system of your vehicle is fil-
led wit h refrigerant R ‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
! Only the refrigerant R ‑ 134a and the PAG oil
approved by Mercedes-Benz may be used.
The appr oved PAG oil may not be mixed wit h
any other PAG oil that is not appr oved forService products and filling capacities 383
Technical data Z

R-134 a refrigerant. Otherwise, th e climat e
control system may be damaged.
Service work, suc h as refillin g wit h refrigeran t or
replacing component parts, may only be carrie d
out by a qualified specialist workshop. All appli-
cable regulations, as well as SA E standard J639,
mus t be adhered to .
Always hav e wor k on th e climat e control system
carrie d out at a qualified specialist workshop.
Refrigerant instruction label
Example: refrigeran t instruction label
C
Warning symbolD
Refrigerant filling capacit y