2018 MERCEDES-BENZ GLS sensor

Power washer ................................ 331
Rear view camera .......................... 334
Roof lining ...................................... 337
Seat belt ....................................... .3 36
Seat cover ..................................... 336
Sensors ......................................... 334
Side running board ........................ 334
Steering wheel ............................... 336
Trim pieces ................................... .3 36
Washing by hand ........................... 331
Wheels .......................................... .3 33
Windows ........................................ 333
Wiper blades .................................. 333
Wooden trim .................................. 336
Cargo compartment cover
Notes/how to use ......................... 306
Cargo compartment enlargement
Important safety notes .................. 303
Cargo compartment floor
Important safety notes .................. 307
Opening/closing ............................ 307
Stowage well (under) ..................... 307
Cargo tie down rings ......................... 305
CD
see also Digital Operator's Man-
ual ................................................. .2 92
CD player (on-board computer) ....... .2 39
Center console
Lower section .................................. 40
Upper section .................................. 39
Central locking
Automatic locking (on-board com-
puter) ............................................. 244
Locking/unlocking (SmartKey) ....... .7 7
Child
Restraint system .............................. 61
Child seat
Forward-facing restraint system ...... 64
LATCH-type (ISOFIX) child seat
anchors ............................................ 62
On the front-passenger seat ............ 64
Rearward-facing res train t system .... 64
Top Tether ...................................... .6 3
Child-proof locks
Important safety notes .................... 64
Rear doors ...................................... .6 5
Children
Special seat belt retractor .............. .6 0 Children in the vehicle
Important safety notes .................... 59
Cigarette lighter ................................ 312
Cleaning
Mirror turn signal .......................... .3 34
Trailer tow hitch ............................ .3 35
Climate control
3-zone automatic climate control
with additional rear-compartment
climate control ............................... 129
Automatic climate control (3-
zone) .............................................. 127
Controlling automatically .............. .1 32
Cooling with air dehumidification .. 131
Defrosting the windows ................. 134
Defrosting the windshield .............. 133
Dual-zone automatic climate con-
trol ................................................. 125
General notes ................................ 125
Indicator lamp ................................ 132
Ionization ....................................... 135
Maximum cooling .......................... 134
Notes on using the automatic cli-
mate control .................................. 131
Overview of systems ..................... .1 25
Problem with the rear window
defroster ........................................ 135
Problems with cooling with air
dehumidification ............................ 132
Rear control panel ......................... 127
Rear control panel (3-zone auto-
matic climate control with addi-
tional rear-compa rtment climate
control
) .......................................... 129
Refrigerant ..................................... 391
Refrigerant filling capacity ............. 392
Setting the air distribution ............. 133
Setting the air vents ..................... .1 36
Setting the airflow ......................... 133
Setting the climate mode (AIR
FLOW) ............................................ 132
Setting the temperature ................ 132
Switching air-recirculation mode
on/off ............................................ 135
Switching on/off ........................... 131
Switching residual heat on/off ...... 135
Switching the rear window
defroster on/off ............................ 134 Index 7

Indicators
see Turn signals
Insect protection on the radiator .... 326
Instrument cluster
Overview .......................................... 37
Warning and indicator lamps .......... .3 7
Instrument cluster lighting .............. 233
Intelligent Light System
Activating/deactivating ................ .2 43
Display message ............................ 260
Overview ........................................ 117
Interior lighting
Automatic control .......................... 120
Emergency lighting ........................ 120
General notes ................................ 119
Manual control ............................... 119
Overview ........................................ 119
Reading lamp ................................. 119
iPod ®
see also Digital Operator's Man-
ual ................................................. .2 92
J Jack
Storage location ............................ 339
Using ............................................. 376
Jump starting (engine) ..................... .3 46
K
Key positions
KEYLESS-GO .................................. 140
SmartKey ....................................... 140
KEYLESS-GO
Activating ......................................... 78
Convenience closing feature ............ 91
Deactivation ..................................... 78
Display message ............................ 278
Locking ............................................ 78
Removing the Start/Stop button ... 141
Start function ................................... 79
Start/Stop button .......................... 140
Starting the engine ........................ 142
Unlocking ......................................... 78
Kickdown
Driving tips ................................... .1 51
Manual gearshifting ....................... 154 Knee bag .............................................. 50
L Lamps
see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 242
Display message ............................ 268
Function/information .................... 211
see Active Lane Keeping Assist
Lap time (RACETIMER) ...................... 246
LATCH-type (ISOFIX) child seat
anchors ................................................ 62
Level control
AIRMATIC ...................................... 190
Level control (display message) ...... 265
Level control (vehicle with the Off-
Road Engineering package)
Basic settings ................................ 184
Function/notes ............................. 184
Important safety notes .................. 184
License plate lamp (display mes-
sage) ................................................... 260
Light function, active
Display message ............................ 260
Light sensor (display message) ....... 260
Light switch
Operation ....................................... 115
Lights
Activating/deactivating the Intel-
ligent Light System ........................ 243
Active light function ....................... 117
Adaptive Highbeam Assist ............. 118
Automatic headlamp mode ............ 115
Fog lamps (extended) .................... 118
Hazard warning lamps ................... 117
High beam flasher .......................... 116
High-beam headlamps ................... 116
Highway mode ............................... 118
Light switch ................................... 115
Low-beam headlamps .................... 116
Off-road lights ................................ 118
Parking lamps ................................ 116
Rear fog lamp ................................ 116
Standing lamps .............................. 116 Index 13

Sensor range ................................. 193
Towing a trailer .............................. 192
Warning display ............................. 194
Parking assistance
see Driving system
Parking brake
Applying automatically ................... 163
Applying or releasing manually ...... 163
Display message ............................ 251
Electric parking brake .................... 162
Emergency braking ........................ 164
General notes ................................ 162
Releasing automatically ................. 163
Warning lamp ................................. 287
Parking lamps
Switching on/off ........................... 116
Parking Pilot
Canceling ....................................... 199
Detecting parking spaces .............. 196
Display Message ............................ 269
Exiting a parking space .................. 198
Function/notes ............................. 195
Important safety notes .................. 195
Parking .......................................... 197
PASSENGER AIR BAG
Display message ............................ 258
Indicator lamps ................................ 45
Problem (malfunction) ................... 258
Pets in the vehicle ............................... 65
Phone book
see also Digital Operator's Man-
ual .................................................. 292
Plastic trim (cleaning instruc-
tions) .................................................. 335
Power locks ......................................... 84
Power washers .................................. 331
Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection)
Display message ............................ 255
Operation ......................................... 58
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS)
Display message ............................ 255
Operation ......................................... 59 Protection against theft
ATA (Anti-Theft Alarm system) ......... 75
Immobilizer ...................................... 75
Protection of the environment
General notes .................................. 27
Pulling away
Automatic transmission ................. 143
General notes ................................ 143
Hill start assist ............................... 143
Trailer ............................................ 143
Q QR code
Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 32
Qualified specialist workshop ........... 31
R RACE TIMER (on-board computer,
Mercedes-AMG vehicles) .................. 246
Radiator cover ................................... 326
Radio
Selecting a station ......................... 239
Radio mode
see also Digital Operator's Man-
ual .................................................. 292
Radio-controlled devices (instal-
ling) ..................................................... 324
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 30
Reading lamp ..................................... 119
Rear bench seat
Folding forwards/back .................. 304
Rear compartment
Exit/entry position (3rd row of
seats) ............................................. 103
Setting the air vents ...................... 137
Setting the temperature ................ 132
Rear fog lamp
Display message ............................ 260
Switching on/off ........................... 116
Rear Seat Entertainment System
AUX jacks ...................................... 299
AUX jacks CD/DVD drive .............. 299 Index 17

Seat belts
Adjusting the driver's and front-
passenger seat belt ........................ .4 8
Adjusting the height ......................... 48
Cleaning ......................................... 336
Correct usage .................................. 47
Fastening ......................................... 48
Important safety guidelines ............. 46
Introduction .................................... .4 5
Releasin g ......................................... 48
Switching belt adjustment on/off
(on-board computer) ...................... 244
Warning lamp ................................. 280
Warning lamp (function) ................... 48
Seats
Adjusting (electrically) ..................... 98
Adjusting the 4-way lumbar sup-
port ................................................ 106
Adjusting the head restraint ............ 99
Calling up a stored setting (mem-
ory function) .................................. 114
Cleaning the cover ......................... 336
Entry position (3rd row of seats) .... 103
Exit position (3rd row of seats) ...... 104
Folding down/up (third row of
seats) ............................................. 101
Folding the 2nd row of seats
forward electrically ........................ 105
Folding the 2nd row of seats
forward manually ........................... 103
Folding the rear bench seat for-
wards/back ................................... 303
Important safety notes .................... 97
Overview .......................................... 97
Seat heating problem .................... 108
Seat ventilation problem ................ 108
Storing settings (memory func-
tion) ............................................... 113
Switching seat heating on/off ....... 106
Switching seat ventilation on/off .. 107
Section
Sliding sunroof ................................. 92
Selector lever
Cleaning ......................................... 336
Sensors (cleaning instructions) ....... 334
Service menu (on-board com-
puter) .................................................. 242 Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 390
Coolant (engine) ............................ 390
DEF special add itives ..................... 389
Eng
ine oil ....................................... 389
Fuel ................................................ 387
Important safety notes .................. 386
Refrigerant (air-conditioning sys-
tem) ............................................... 391
Washer fluid ................................... 391
Setting the air distribution ............... 133
Setting the airflow ............................ 133
Setting the date/time format
see also Digital Operator's Man-
ual .................................................. 292
Setting the language
see also Digital Operator's Man-
ual .................................................. 292
Setting the time
see also Digital Operator's Man-
ual .................................................. 292
Settings
Factory (on-board computer) ......... 245
On-board computer ....................... 243
SETUP (on-board computer,
Mercedes-AMG vehicles) .................. 246
Side impact air bag ............................. 51
Side marker lamp (display mes-
sage) ................................................... 260
Side windows
Cleaning ......................................... 333
Convenience closing feature ............ 90
Convenience opening feature .......... 90
Hinged side windows ....................... 89
Important safety information ........... 88
Opening/closing .............................. 89
Overview .......................................... 88
Problem (malfunction) ..................... 92
Resetting ......................................... 91
Reversing feature ............................. 89
SIRIUS services
see also Digital Operator's Man-
ual .................................................. 292
Sliding sunroof
Important safety notes .................... 92 Index 19

3 Mercedes Drive
Montvale, NJ 07645-0350
In Canada
Customer Relations Department
Mercedes-Benz Canada, Inc.
98 Vanderhoof Avenue
Toronto, Ontario M4G 4C9
Reporting safety defects USA only:
The following text is reproduced as required of
all manufacturers under Title 49, Code of U.S.
Federal Regulations, Part 575 pursuant to the
National Traffic and Motor Vehicle Safety Act of
1966.
If you believe that your vehicle has a defect
which could cause a crash or could cause injury
or death, you should immediately inform the
National Highway Traffic Safety Administration
(NHTSA) in addition to notifying Mercedes-Benz
USA, LLC.
If NHTSA receives similar complaints, it may
open an investigation, and if it finds that a safety
defect exists in a group of vehicles, it may order
a recall and remedy campaign. However, NHTSA
cannot become involved in individual problems
between you, your dealer, or Mercedes-Benz
USA, LLC.
To contact NHTSA, you may call the Vehicle
Safety Hotline toll-free at 1-888-327-4236
(TTY: 1-800-424-9153); go to http://
www.safercar.gov ; or write to: Administrator,
NHTSA, 400 Seventh Street, SW., Washington,
DC 20590.
You can also obtain other information about
motor vehicle safety from
http://www.safercar.gov
Limited Warranty
! Observe the notes in this Operator's Manual
regarding the correct operation of your vehi-
cle and possible damage to the vehicle. Dam-
age to the vehicle which is caused by violation
of these notes is not covered by the
Mercedes-Benz implied warranty or the new
or used-vehicle warranty. QR codes for the rescue card The QR codes are secured in the fuel filler flap
and on the opposite side on the B-pillar. In the
event of an accident, rescue services can use
the QR code to quickly find the appropriate res-
cue card for your vehicle. The current rescue
card contains the most important information
about your vehicle in a compact form, e.g. the
routing of the electric cables.
You can find more information at
www.mercedes-benz.de/qr-code .
Data stored in the vehicle
Information from electronic control
units There are electronic control units installed in
your vehicle. Some of these are necessary for
your vehicle to operate safely, while some offer
support during driving (driver assistance sys-
tems). In addition, your vehicle offers comfort
and entertainment functions that are also made
possible by electronic control units.
Electronic control units contain data storage
systems that can temporarily or permanently
save technical information concerning the vehi-
cle's condition, component stress and mainte-
nance requirements as well as technical events
and malfunctions.
This information generally documents the con-
dition of a component, a module, a system or the
surroundings, for example: R
operating states of system components (e.g.
fill levels, battery status, tire pressure) R
status messages concerning the vehicle or its
individual components (e.g. wheel rpm/
speed, deceleration, lateral acceleration, indi-
cation of whether seat belts are fastened) R
malfunctions and defects in important system
components (e.g. lights, brakes) R
information about events leading to vehicle
damage R
system responses in special driving situations
(e.g. air bag deployment, intervention of sta-
bility control systems) R
ambient conditions (e.g. temperature, rain
sensor)
In addition to performing the actual control unit
function, these data are used by manufacturers32
Data stored in the vehicle
Introduction

Objects in the vehicle interior may prevent
an air bag from functioning correctly. Before
starting your journey and to avoid risks resulting
from the speed of the air bag as it deploys, make
sure that: R
there are no people, animals or objects
between the vehicle occupants and an air bag R
there are no objects between the seat, door
and B-pillar R
there are no hard objects, e.g. coat hangers,
hanging on the grab handles or coat hooks R
no accessories, such as cup holders, are
attached to the vehicle within the deployment
area of an air bag, e.g. to doors, side windows,
rear side trim or side walls R
no heavy, sharp-edged or fragile objects are in
the pockets of your clothing. Store such
objects in a suitable place
G WARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer
function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objects
to it.
G WARNING
Sensors to control the air bags are located in
the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the
function of the sensors being impaired. The air
bags might therefore not function properly
anymore. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work-
shop.
Front air bags
! Do not place heavy objects on the front-
passenger seat. This could cause the system
to identify the seat as being occupied. In the
event of an accident, the restraint systems on the front-passenger side may be triggered
and have to be replaced.
Driver's air bag C deploys in front of the steer-
ing wheel. Front-passenger front air bag D
deploys in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection for the occu-
pants in the front seats.
The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag ( Y
page 45).
The front-passenger front air bag will only
deploy if: R
the system, based on the OCS weight sensor
readings, detects that the front-passenger
seat is occupied ( Y
page 51). The
PASSENGER AIR BAG OFF indicator lamp is
not lit ( Y
page 52) R
the restraint system control unit predicts a
high accident severity
Driver's knee bag
Driver's knee bag C deploys under the steering
column. The driver's knee bag is deployed
together with the front air bag.50
Occupant safety
Safety

they provide an indication of air bag deploy-
ment.
The vehicle can be deformed considerably, with-
out an air bag being deployed. This is the case if
only parts which are relatively easily deformed
are affected and the rate of deceleration is not
high. Conversely, air bags may be deployed even
though the vehicle suffers only minor deforma-
tion. This is the case if, for example, very rigid
vehicle parts such as longitudinal body mem-
bers are hit, and sufficient deceleration occurs
as a result.
If the restraint system control unit detects a side
impact or if the vehicle rolls over, the applicable
components of the restraint system are
deployed independently of each other depend-
ing on the apparent type of accident. R
Side impact air bags on the side where the
impact takes place, independently of the
Emergency Tensioning Device and the use of
the seat belt on the driver's seat and outer
seats in the second row
The side impact air bag on the front-
passenger side deploys under the following
conditions: -
the OCS system detects that the front-
passenger seat is occupied or -
the seat belt buckle tongue is engaged in
th e belt buckle of the front-passenger seatR
Window curtain air bag on the side of impact,
independently of the use of the seat belt and
independently of whether the front-
passenger seat is occupied R
Emergency Tensioning Devices, if the system
determines that deployment can offer addi-
tional protection in this situation R
Window curtain air bags on the driver's and
front-passenger side in certain situations
when the vehicle rolls over, if the system
determines that deployment can offer addi-
tional protection to that provided by the seat
belt
i Not all air bags are deployed in an accident.
The different air bag systems work independ-
ently of each other.
How the air bag system works is determined
by the severity of the accident detected,
especially the vehicle deceleration or accel-
eration and the apparent type of accident: R
Frontal collision R
Side impact R
Rollover PRE-SAFE ®
(anticipatory occupant
protection system)
Introduction In certain hazardous situations, PRE-SAFE ®
takes pre-emptive measures to protect the vehi-
cle occupants.
Important safety notes
! Make sure that there are no objects in the
footwell or behind the seats. There is a danger
that the seats and/or objects could be dam-
aged when PRE-SAFE ®
is activated.
Although your vehicle is equipped with PRE-
SAFE ®
, the possibility of injury in the event of an
accident cannot be ruled out. Always adapt your
driving style to suit the prevailing road and
weather conditions and maintain a safe distance
from the vehicle in front. Drive carefully.
Function PRE-SAFE ®
intervenes: R
in emergency braking situations, e.g. when
BAS is activated R
in critical driving situations, e.g. when physi-
cal limits are exceeded and the vehicle under-
steers or oversteers severely R
on vehicles with the Driving Assistance PLUS
package: when Active Brake Assist intervenes
powerfully or the radar sensor system detects
an imminent danger of collision in certain sit-
uations
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detected: R
the front seat belts are pre-tensioned. R
if the vehicle skids, the side windows and the
sliding sunroof are closed. R
vehicles with the memory function: the front-
passenger seat is adjusted if it is in an unfav-
orable position. R
vehicles with a multicontour seat: the air pres-
sure in the side bolsters of the seat backrest
is increased.
If the hazardous situation passes without result-
ing in an accident, PRE-SAFE ®
slackens the belt
pre-tensioning. On vehicles with multicontour
seats, the air pressure in the side bolsters is
reduced again. All settings made by PRE-SAFE ®
can then be reversed.58
Occupant safety
Safety

If the seat belt pre-tensioning is not reduced: X
Move the seat backrest or seat back slightly
when the vehicle is stationary.
The seat belt pre-tensioning is reduced and
the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. Informa-
tion about the convenience function can be
found under "Belt adjustment" ( Y
page 48).
PRE-SAFE ®
PLUS (anticipatory occu-
pant protection system PLUS)
Introduction PRE-SAFE ®
PLUS is only available in vehicles
with the Driving Assistance PLUS package.
Using the radar sensor system, PRE-SAFE ®
PLUS is able to detect that a head-on or rear-end
collision is imminent. In certain hazardous sit-
uations, PRE-SAFE ®
PLUS takes pre-emptive
measures to protect the vehicle occupants.
Important safety notes The intervention of PRE-SAFE ®
PLUS cannot
prevent an imminent collision.
The driver is not warned about the intervention
of PRE-SAFE ®
PLUS.
PRE-SAFE ®
PLUS does not intervene if the vehi-
cle is backing up.
When driving, or when parking or exiting a park-
ing space with assistance from Parking Pilot,
PRE-SAFE ®
PLUS will not apply the brakes.
Function PRE-SAFE ®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision. PRE-SAFE ®
PLUS takes the following measures
depending on the hazardous situation detected: R
if the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned. R
if the radar sensor system detects that a rear-
end collision is imminent: -
the brake pressure is increased if the driver
applies the brakes when the vehicle is sta-
tionary. -
the seat belts are pre-tensioned.
The PRE-SAFE ®
PLUS braking application is can-
celed: R
if the accelerator pedal is depressed when a
gear is engaged R
if the risk of a collision passes or is no longer
detected R
if Distance Pilot DISTRONIC indicates an
intention to pull away
If the hazardous situation passes without result-
ing in an accident, the original settings are
restored.
Automatic measures after an acci-
dent Immediately after an accident, the following
measures are implemented, depending on the
type and severity of the impact: R
the hazard warning lamps are activated R
the emergency lighting is activated R
the vehicle doors are unlocked R
the front side windows are lowered R
vehicles with a memory function: the electri-
cally adjustable steering wheel is raised when
the driver's door is opened R
the engine is switched off and the fuel supply
is cut off R
vehicles with mbrace: automatic emergency
call
Children in the vehicle
Important safety notes
Accident statistics show that children secured
in the rear seats are safer than children secured
in the front-passenger seat. For this reason,
Mercedes-Benz strongly advises that you installChildren in the vehicle 59
Safety Z