2017 MERCEDES-BENZ GLS radiator

Fuel filler flap
Opening ........................................ .1 55
Fuel filter (display message) ............ 260
Fuel level
Calling up the range (on-board
computer) ...................................... 233
Fuel tank
Capacity ........................................ 379
Problem (malfunction) ................... 156
Fuses
Allocation chart ............................ .3 43
Before changing ............................ .3 44
Dashboard fuse box ....................... 344
Fuse box in the engine compart-
ment .............................................. 344
Fuse box under rear bench seat .... 345
Important safety notes .................. 343
GGarage door opener
Clearing the memory ..................... 318
General notes ................................ 315
Important safety notes .................. 315
Opening/closing the garage doo r. .3 17
Problems when programming ....... .3 17
Programming (button in the rear-
view mirror) ................................... 316
Synchronizing the rolling code ....... 316
Gear indicator (on-board com-
puter, Mercedes-AMG vehicles) ....... 241
Genuine parts ...................................... 25
Glove box .......................................... .2 95
Google™ Local Search
see also Digital Operator's Man-
ual ................................................. .2 87
GTW (Gross Trailer Weight) (defini-
tion) .................................................... 365
H
Handbrake
see Parking brake
Hazard warning lamps ..................... .1 14
Head restraints
Adjusting ......................................... 96
Adjusting (electrically) ..................... 97
Adjusting (manually) ........................ 96 Adjusting (rear) ................................ 97
Installing/removing (rear) ................ 98
Luxury .............................................. 97
Headlamps
Fogging up ..................................... 116
see Automatic headlamp mode
Heating
see Climate control
High beam flasher ............................ .1 13
High-beam headlamps
Adaptive Highbeam Assist ............. 115
Display message ............................ 256
Replacing bulbs ............................ .1 19
Switching on/off ........................... 113
Highway mode ................................... 114
Hill start assist .................................. 141
HOLD function
Deactivating ................................... 185
Display message ............................ 264
Function/notes ............................ .1 85
Home address
see also Digital Operator's Man-
ual ................................................. .2 87
Hood
Closing .......................................... .3 20
Display message ............................ 272
Important safety notes .................. 319
Opening ......................................... 319
Horn ...................................................... 33
Hydroplaning ..................................... 166
I
Ignition lock
see Key positions
Immobilizer .......................................... 72
Indicator lamps
see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator .... 320
Instrument cluster
Overview .......................................... 34
Warning and indicator lamps ........... 34
Instrument cluster lighting .............. 229
Intelligent Light System
Activating/deactivating ................. 239
Overview ........................................ 11412
Index

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

Video
Operating the DVD ......................... 235
see also Digital Operator's Man-
ual .................................................. 287
VIN ...................................................... 377
Seat ............................................... 378
Type plate ...................................... 377
WWarning and indicator lamps
ABS ................................................ 277
Brakes ........................................... 276
Check Engine ................................. 283
Coolant .......................................... 283
Distance Pilot DISTRONIC ............. 285
Distance warning ........................... 285
ESP ®
.............................................. 279
ESP ®
OFF ....................................... 280
Fuel tank ........................................ 283
Overview .......................................... 34
Parking brake ................................ 282
PASSENGER AIR BAG ...................... 42
Reserve fuel ................................... 283
Restraint system ............................ 282
Seat belt ........................................ 275
Tire pressure monitor .................... 286
Warranty .............................................. 26
Washer fluid
Display message ............................ 273
Weather display (COMAND)
see also Digital Operator's Man-
ual .................................................. 287
Wheel and tire combinations
Tires ............................................... 371
Wheel bolt tightening torque ........... 370
Wheel chock ...................................... 367
Wheels
Changing a wheel .......................... 366
Checking ........................................ 346
Cleaning ......................................... 326
Emergency spare wheel ................. 372
Important safety notes .................. 346
Information on driving .................... 346
Interchanging/changing ................ 366
Mounting a new wheel ................... 369
Mounting a wheel .......................... 367
Overview ........................................ 346 Removing a wheel .......................... 369
Snow chains .................................. 348
Storing ........................................... 367
Tightening torque ........................... 370
Wheel size/tire size ....................... 371
Window curtain air bag
Display message ............................ 253
Operation ......................................... 48
Windows
see Side windows
Windshield
Defrosting ...................................... 132
Windshield washer fluid
see Windshield washer system
Windshield washer system
Adding washer fluid ....................... 322
Important safety notes .................. 383
Windshield wipers
Problem (malfunction) ................... 122
Rear window wiper ........................ 120
Replacing the wiper blades ............ 120
Switching on/off ........................... 119
Winter driving
Sl ippery road surfaces ................... 167
Winter operation
Overview ........................................ 348
Radiator cover ............................... 320
Winter tires
M+S tires ....................................... 348
Wiper blades
Cleaning ......................................... 327
Replacing ....................................... 120
Replacing (rear window) ................ 121
Replacing (windshield) ................... 121
Wooden trim (cleaning instruc-
tions) .................................................. 330
Workshop
see Qualified specialist workshop
Z
ZONE function
Switching on/off ........................... 13224
Index

Off-road fording
! Under no circumstances should you accel-
erate before entering the water. The bow
wave could cause water to enter and damage
the engine and other assemblies.
! Do not open any of the vehicle's doors while
fording. Otherwise, water could get into the
vehicle interior and damage the vehicle's
electronics and interior equipment. R
Establish how deep the water is and the char-
acteristics of the body of water before ford-
ing. R
Select the highest possible vehicle level. R
Shift to a lower gear using the left-hand steer-
ing wheel paddle shifter. R
Avoid high engine speeds. R
Enter and exit the water at a flat place and at
a steady walking pace. R
Drive slowly and at an even speed through the
water. R
Ensure that a bow wave does not form as you
drive. R
Do not stop and do not switch off the engine.
Water offers a high degree of resistance, and
the ground is slippery and in some cases
unstable. Therefore, it is difficult and danger-
ous to pull away in the water. R
Clean any mud from the tire tread after ford-
ing. R
Apply the brakes to dry them after fording.
Always observe the fording depth values
( Y
page 385).
Winter driving
G WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine brak-
ing on a slippery road surface.
G DANGER
If the exhaust pipe is blocked or adequate
ventilation is not possible, poisonous gases such as carbon monoxide (CO) may enter the
vehicle. This is the case, e.g. if the vehicle
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open a
window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winter-proofed at a qualified
specialist workshop at the onset of winter.
Drive particularly carefully on slippery road sur-
faces. Avoid sudden acceleration, steering and
braking maneuvers. Do not use cruise control or
Distance Pilot DISTRONIC.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed: X
Shift the transmission to position N .
When driving in snow with or without snow
chains, select driving program Slippery
( Y
page 145).
i Vehicles with a diesel engine: do not
cover the radiator, e.g. with a protective
cover. The measuring function of the on-
board diagnosis system may otherwise pro-
vide inaccurate values. Some of these values
are required by law and must therefore always
be accurate.
The outside temperature indicator is not
designed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Changes in the outside temperature are dis-
played after a short delay.
Indicated temperatures just above the freezing
point do not guarantee that the road surface is
free of ice. The road may still be icy, especially in
wooded areas or on bridges. You should pay
special attention to road conditions when tem-
peratures are around the freezing point.
For more information on driving with snow
chains, see ( Y
page 348).
For more information on driving with summer
tires, see ( Y
page 348).
Observe the notes in the "Changing a wheel"
section ( Y
page 366).Driving tips 167
Driving and parking Z

ranties, and is not permitted by the FCC. Do
not tamper with, alter, or use in any non-
approved way.
Any unauthorized modification to this device
could void the user's authority to operate the
equipment.
i Canada only: This device complies with
RSS-210 of Industry Canada. Operation is
subject to the following two conditions:
1. This device may not cause harmful inter-
ference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation of the device.
Removal, tampering, or altering of the device
will void any warranties, and is not permitted.
Do not tamper with, alter, or use in any non-
approved way.
Any unauthorized modification to this device
could void the user's authority to operate the
equipment.
Radar sensors The Active Blind Spot Assist radar sensors are
integrated into the front and rear bumpers and
behind a cover in the radiator trim. Make sure
that the bumpers and the cover in the radiator
grill are free of dirt, ice or slush. The sensors
must not be covered, for example by cycle racks
or overhanging loads. Following an accident or
in the event of damage to the bumpers, have the
function of the radar sensors checked at a quali-
fied specialist workshop. Active Blind Spot
Assist may otherwise no longer work properly.
Monitoring area
G WARNING
Active Blind Spot Assist does not detect all
traffic situations and road users. There is a
risk of an accident.
Always make sure that there is sufficient dis-
tance on the side for other traffic or obstacles. Active Blind Spot Assist monitors the area up to
10 ft (3.0 m) behind your vehicle and directly
next to your vehicle, as shown in the diagram.
In particular, the detection of obstacles can be
impaired if: R
there is dirt on the sensors or anything else
covering the sensors R
poor visibility, e.g. due to rain, snow or spray
Vehicles in the monitoring range are then not
reliably indicated.
Active Blind Spot Assist may not detect narrow
vehicles, such as motorcycles or bicycles, or
may only detect them too late.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may be
indicated, especially if the vehicles are not driv-
ing in the middle of their lane. This may be the
case if there are vehicles at the edge of their
lane.
On very wide lanes, vehicles in the adjacent lane
may not be shown if they are too far away.
Due to the nature of the system: R
warnings may be issued in error when driving
close to crash barriers or similar solid lane
borders. R
warnings may be interrupted when driving
alongside particularly long vehicles, e.g.
trucks, for a prolonged time.Driving systems 211
Driving and parking Z

Engine compartment
Hood
Important safety notes
G WARNING
If the hood is unlatched, it may open up when
the vehicle is in motion and block your view.
There is a risk of an accident.
Never unlatch the hood while driving. Before
every trip, ensure that the hood is locked.
G WARNING
When opening and closing the hood, it may
suddenly fall into the closed position. There is
a risk of injury to persons within range of
movement of the hood.
Open and close the hood only when no one is
within its range of movement.
G WARNING
Opening the hood when the engine is over-
heated or when there is a fire in the engine
compartment could expose you to hot gases
or other service products. There is a risk of
injury.
Let an overheated engine cool down before
opening the hood. If there is a fire in the
engine compartment, keep the hood closed
and contact the fire department.
G WARNING
The engine compartment contains moving
components. Certain components, such as
the radiator fan, may continue to run or start
again suddenly when the ignition is off. There
is a risk of injury.
If you need to do any work inside the engine
compartment: R
switch off the ignition R
never reach into the area where there is a
risk of danger from moving components,
such as the fan rotation area R
remove jewelry and watches R
keep items of clothing and hair, for exam-
ple, away from moving parts
G WARNING
The ignition system and the fuel injection sys-
tem work under high voltage. If you touch
components which are under voltage, you
could get an electric shock. There is a risk of
injury.
Never touch components of the ignition sys-
tem or fuel injection system when the ignition
is switched on.
Opening the hood
G WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following.
G WARNING
When the hood is open and the windshield
wipers are set in motion, you can be injured by
the wiper linkage. There is a risk of injury.
Always switch off the windshield wipers and
the ignition before opening the hood.
! Make sure that the windshield wipers are
not folded away from the windshield. You
could otherwise damage the windshield wip-
ers or the hood.Engine compartment 319
Maintenance and care Z

X
Make sure that the windshield wipers are
turned off. X
Pull release lever C on the hood.
The hood is released.
X
Reach into the gap, pull hood catch handle D
up and lift the hood.
If you lift the hood by approximately 15 in
(40 cm), the hood is opened and held open
automatically by the gas-filled strut.
Closing the hood X
Lower the hood and let it fall from a height of
approximately 8 in (20 cm). X
Check that the hood has engaged properly.
If the hood can be raised slightly, it is not
properly engaged. Open it again and close it
with a little more force.
Radiator
Vehicles with a diesel engine: do not cover
the radiator, for example with a winter front or
bug cover. The readings of the on-board-diag-
nostic system may otherwise be inaccurate.
Some of these readings are required by law and
must be accurate at all times. Engine oil
Important safety notes
G WARNING
Certain components in the engine compart-
ment, such as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and
touch only the components described in the
following.
G WARNING
If engine oil comes into contact with hot com-
ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Make sure that engine oil is not spilled next to
the filler neck. Let the engine cool down and
thoroughly clean the engine oil off the com-
ponents before starting the engine.
General notes Depending on your driving style, the vehicle
consumes up to 0.9 US qt (0.8 liters) of oil per
600 miles (1,000 km). The oil consumption may
be higher than this when the vehicle is new or if
you frequently drive at high engine speeds.
Depending on the engine, the oil dipstick may be
in a different location.
When checking the oil level: R
park the vehicle on a level surface. R
the engine should be switched off for approx-
imately five minutes if the engine is at normal
operating temperature. R
if the engine is not at normal operating tem-
perature, e.g. if the engine was only started
briefly, wait about 30 minutes before carrying
out the measurement.320
Engine compartment
Maintenance and care

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