2019 MERCEDES-BENZ GLS SUV ECU

Mirror
Vanity mirror (sun visor) ............... .305
Mirror turn signal
Cleaning ......................................... 330
Mirrors
see Exterior mirrors
see Rear-view mirror
see Vanity mirror (in the sun visor)
Mobile phone
Connecting (Bluetooth ®
inter-
face) .............................................. 291
Connecting (device manager) ....... .292
Frequencies ................................... 382
Installation ..................................... 382
Menu (on-board computer) ............ 237
Transmission output (maximum) .... 382
Modifying the programming
(SmartKey) .......................................... .79
MOExtended tires .............................. 336
Mounting wheels
Lowering the vehicle ...................... 377
Mounting a new wheel ................... 376
Preparing the vehicle .................... .373
Raising the vehicle ......................... 374
Removing a wheel .......................... 375
Securing the vehicle against roll-
ing away ........................................ 374
MP3
Operation ....................................... 236
see also Digital Operator's Man-
ual ................................................. .287
Multifunction display
Function/notes ............................ .232
Permanent display ......................... 240
Multifunction steering wheel
Operating the on-board computer .. 231Overview .......................................... 38
Multimedia system
Switching on and off ..................... .288
Music files
see also Digital Operator's Man-
ual.................................................. 287 N
Navigation Entering a destination .................... 289
Menu (on-board computer) ............ 234 see also Digital Operator's Man-
ual .................................................. 287
Notes on breaking-in a new vehi-
cle ....................................................... 139 O
Occupant Classification System
(OCS) Conditions ....................................... 52
Faults ............................................... 55
Operation ......................................... 52
System self-test ............................... 54
Occupant safety
Air bags ........................................... 49
Automatic measures after an acci-
dent ................................................. 59
Belt warning ..................................... 48
Children in the vehicle ..................... 59
Important safety notes .................... 44
Introduction to the restraint sys-
tem .................................................. 44
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 45
Pets in the vehicle ........................... 65
PRE-SAFE ®
(anticipatory occu-
pant protection) ............................... 58
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS) .............. 59
Restraint system warning lamp ........ 45
Seat belt .......................................... 45
OCS
Faults ............................................... 55
Operation ......................................... 52
Odometer ........................................... 233
Off-road driving
Approach/departure angle ............ 391
Checklist after driving off-road ...... 168
Checklist before driving off-road .... 168
General information ....................... 167
Important safety notes .................. 166
Maximum gradient climbing abil-
ity .................................................. 392
Maximum water depth ................... 390
Traveling uphill ............................... 169
Off-road lights .................................... 118 Index
15

Towing away
Important safety guidelines ........... 346
Installing the towing eye ................ 347
Notes for 4MATIC vehicles ............ 349
Removing the towing eye ............... 347
Transporting the vehicle ................ 348
With both axles on the ground ....... 347
Towing eye ......................................... 335
Traffic reports
see also Digital Operator's Man-
ual .................................................. 287
Traffic Sign Assist
Activating/deactivating the warn-ing function .................................... 238
Display message ............................ 264
Function/note s............................. 206
Important safety notes .................. 206
Instrument cluster display ............. 206
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights ............................................... 226
Trailer towing
Active Blind Spot Assist ................. 212
Active Lane Keeping Assist ............ 215
Blind Spot Assist ............................ 208
Permissible trailer loads and
drawbar noseweights ..................... 226
Transfer case ..................................... 155
Transmission
see Automatic transmission
Transmission position display ......... 149
Transporting the vehicle .................. 348
Traveling uphill
Brow of hill ..................................... 170
Driving downhill ............................. 170
Maximum gradient-climbing capa-
bility ............................................... 170
Trim pieces (cleaning instruc-
tions) .................................................. 332
Trip computer (on-board com-
puter) .................................................. 233
Trip odometer
Calling up ....................................... 233
Resetting (on-board computer) ...... 234
Trunk
see Tailgate Turn signals
Display message ............................ 257
Replacing bulbs (front) ................... 122
Switching on/of f........................... 116
Two-way radio
Frequencies ................................... 382
Installation ..................................... 382
Transmission output (maximum) .... 382
TWR (Tongue Weight Rating) (defi-
nition) ................................................. 372
Type identification plate
see Vehicle identification plate U
Unlocking Emergency unlocking ....................... 84
From inside the vehicle (central
unlocking button) ............................. 83
Upshift indicator (on-board com-
puter, Mercedes-AMG vehicles) ....... 242
USB devices
Connecting to the Media Inter-
face ............................................... 294 V
Vanity mirror (in the sun visor) ........ 305
Vehicle
Correct use ...................................... 31
Data acquisition ............................... 32
Display message ............................ 270
Equipment ....................................... 28
Individual settings .......................... 240
Limited Warranty ............................. 32
Loading .......................................... 362
Locking (in an emergency) ............... 84
Locking (SmartKey) .......................... 77
Lowering ........................................ 377
Maintenance .................................... 29
Operating safety .............................. 30
Parking .......................................... 158
Parking for a long period ................ 160
Pulling away ................................... 143
Raising ........................................... 374
REACH Regulation ........................... 31
Reporting problems ......................... 32
Securing from rolling away ............ 374 Index
23

These devices may not cause harmful interfer-
ence, and 2) These devices must accept any
interference received, including interference
that may cause undesired operation. Changes
or modifications not expressly approved by the
party responsible for compliance could void the
user’s authority to operate the equipment."
Canada: "The wireless devices of this vehicle
comply with Industry Canada license-exempt
RSS standard(s). Operation is subject to the fol-
lowing two conditions: (1) These devices may
not cause interference, and (2) These devices
must accept any interference, including inter-
ference that may cause undesired operation of
the device." Diagnostics connection
The diagnostics connection is only intended for
the connection of diagnostic equipment at a
qualified specialist workshop. G
WARNING
If you connect equipment to a diagnostics
connection in the vehicle, it may affect the
operation of vehicle systems. As a result, the operating safety of the vehicle could be affec-
ted. There is a risk of an accident.
Only connect equipment to a diagnostics con-
nection in the vehicle, which is approved for
your vehicle by Mercedes-Benz. G
WARNING
Objects in the driver's footwell can restrict the pedal travel or obstruct a depressed pedal.
The operating and road safety of the vehicle is
jeopardized. There is a risk of an accident.
Make sure that all objects in the vehicle are
stowed correctly, and that they cannot enter
the driver's footwell. Install the floormats
securely and as specified in order to ensure
sufficient clearance for the pedals. Do not use loose floormats and do not place floormats on
top of one another.
! If the engine is switched off and equipment
on the diagnostics connection is used, the
starter battery may discharge.
Connecting equipment to the diagnostics con-
nection can lead to emissions monitoring infor- mation being reset, for example. This may lead
to the vehicle failing to meet the requirements of
the next emissions test during the main inspec-
tion. Qualified specialist workshop
An authorized Mercedes-Benz Center is a quali-
fied specialist workshop. It has the necessary
specialist knowledge, tools and qualifications to correctly carry out the work required on your
vehicle. This is especially the case for work rel-
evant to safety.
Always have the following work carried out at an authorized Mercedes-Benz Center:
R work relevant to safety
R service and maintenance work
R repair work
R alterations, installation work and modifica-
tions
R work on electronic components Correct use
If you remove any warning stickers, you or oth-
ers could fail to recognize certain dangers.
Leave warning stickers in position.
Observe the following information when driving your vehicle:
R the safety notes in this manual
R the vehicle technical data
R traffic rules and regulations
R laws and safety standards pertaining to motor
vehicles Information about the REACH decree
The REACH regulation (Regulation (EC) no.
1907/2006, Article 33) lays down an informa-
tion obligation for substances of very high con-
cern (SVHC).
Daimler AG acts in good faith to avoid using
these SVHCs and to allow the customer to han- dle these substances safely. In accordance with
supplier information and internal product infor-
mation from Daimler AG, SVHCs that account
for more than 0.1 percent by weight of individual products in this vehicle are known. Operating safety
31Introduction Z

More detailed information can be found at the
following addresses:
R http://www.daimler.com/reach (German
version)
R http://www.daimler.com/reach/en (Eng-
lish version) Problems with your vehicle
If you should experience a problem with your
vehicle, particularly one that you believe may
affect its safe operation, we urge you to contact
an authorized Mercedes-Benz Center immedi-
ately to have the problem diagnosed and recti-
fied. If the problem is not resolved to your sat-
isfaction, please discuss the problem again with
the authorized Mercedes-Benz Center or, if nec- essary, contact us at one of the following
addresses.
In the USA
Customer Assistance Center
Mercedes-Benz USA, LLC
One Mercedes-Benz
Sandy Springs, GA 30328
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 code for 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
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- 32
Data stored in the vehicleIntroduction

Online services
Wireless network connection If your vehicle has a wireless network connec-
tion, data can be exchanged between your vehi-
cle and other systems. The wireless network
connection is made possible by the vehicle's
own transmitter and receiver or by mobile devi- ces that you have brought into the vehicle (e.g.
smartphones). Online functions can be used via
this wireless network connection. These include online services and applications/apps providedby the manufacturer or other providers.
Services provided by the manufacturer In the case of the manufacturer's online serv-
ices, the manufacturer describes the functions
in a suitable place (e.g. operating instructions,
manufacturer's website) and provides the asso-
ciated information subject to data protection
legislation. Personal data can be used in order to
provide online services. The exchange of data
for this purpose takes place via a secure con-
nection, e.g. with the manufacturer's IT systems intended for the purpose. Collecting, processing
and using personal data beyond the provision of
services is permitted only on the basis of a stat-
utory permit or declaration of consent.
You can usually activate and deactivate the serv-
ices and functions (sometimes subject to a fee).
In many cases, this also applies to the vehicle's entire data connection. However, this does not
apply in particular to legally prescribed func-
tions and services such as the "eCall" emer-
gency call system.
Services from third parties If it is possible to use online services from other
providers, these services are the responsibility
of the provider in question and subject to that
provider's data protection conditions and terms of use. The manufacturer has no influence over
the content exchanged here.
For this reason, please ask the service provider
for information about the type, extent and pur-
pose of the collection and use of personal data
when services are provided by third parties. COMAND/mbrace
If the vehicle is equipped with COMAND or
mbrace, additional data about the vehicle's
operation, the use of the vehicle in certain sit-
uations, and the location of the vehicle may be
compiled through COMAND or the mbrace sys-
tem.
For additional information please refer to the
COMAND User Manual or the Digital Operator's
Manual and/or the mbrace Terms and Condi-
tions. Event data recorders
USA only:
This vehicle is equipped with an event data
recorder (EDR). This vehicle is equipped with an
event data recorder (EDR). The main purpose of an EDR is to record, in certain crash or near
crash-like situations, such as an air bag deploy-
ment or hitting a road obstacle, data that will
assist in understanding how a vehicle's systems performed. The EDR is designed to record data
relating to vehicle dynamics and safety systemsfor a short period of time, typically 30 seconds
or less.
The EDR in this vehicle is designed to record
such data as:
R How various systems in your vehicle were
operating
R Whether or not the driver and passenger
safety belts were buckled/fastened
R How far (if at all) the driver was depressing the
accelerator and/or brake pedal; and,
R How fast the vehicle was traveling
These data can help provide a better under-
standing of the circumstances in which crashes
and injuries occur. NOTE:EDR data are recor-
ded by your vehicle only if a non-trivial crash
situation occurs; no data are recorded by the
EDR under normal driving conditions and no
personal data (e.g. name, gender, age and crash
location) are recorded. However, other parties,
such as law enforcement could combine the
EDR data with the type of personally identifying
data routinely acquired during a crash investi-
gation.
Access to the vehicle and/or the EDR is needed to read data that is recorded by an EDR, and
special equipment is required. In addition to the
vehicle manufacturer, other parties that have 34
Data stored in the vehicleIntroduction

Panic alarm
X
To activate: press0033button 0043for at
least one second.
A visual and audible alarm is triggered if the
alarm system is armed.
X To deactivate: press0033button 0043again.
or X Insert the SmartKey into the ignition lock.
or X Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehicle. Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi- cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces to which vehicle occupants are subjected during
an accident.
The restraint system includes the following com-
ponents:
R seat belt system
R air bags
R child restraint system
R child seat securing systems
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if, at all times, all
vehicle occupants:
R have fastened their seat belts correctly
(Y page 47)
R have the seat and head restraint adjusted
properly (Y page 97) As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position (Y page 97).
You also have to make sure that an air bag can
inflate properly if deployed (Y page 49).
An air bag supplements a correctly worn seat
belt. As an additional safety device, the air bag
increases the level of protection for vehicle
occupants in the event of an accident. For exam- ple, if, in the event of an accident, the protectionoffered by the seat belt is sufficient, the air bags
are not deployed. When an accident occurs, only
the air bags that increase protection in that par- ticular accident situation are deployed. How-
ever, seat belts and air bags generally do not
protect against objects penetrating the vehicle
from the outside.
Information on restraint system operation can
be found under "Triggering of the Emergency
Tensioning Devices and air bags" (Y page 56).
See "Children in the vehicle" for information on
children traveling with you in the vehicle as well
as on child restraint systems (Y page 59). Important safety notes
G
WARNING
Modifications to the restraint system may
cause it to no longer work as intended. The
restraint system may then not perform its
intended protective function and may fail in an accident or trigger unexpectedly, for example.
This poses an increased risk of injury or even fatal injury.
Never modify parts of the restraint system.
Never tamper with the wiring, the electronic
components or their software.
If it is necessary to modify components of the
restraint system to accommodate a person with
disabilities, contact an authorized Mercedes-
Benz Center for details. USA only: for further
information contact our Customer Assistance
Center at 1-800 FOR-MERCEDES
(1‑800‑367‑6372).
Mercedes-Benz recommends that you only use
driving aids which have been approved specifi-
cally for your vehicle by Mercedes-Benz. 44
Occupant safetySafety

For this reason, always secure persons under
5 ft (1.50 m)tall in suitable additional restraint
systems.
If a child younger than twelve years old and
under 5 ft (1.50 m) in height istraveling in the
vehicle:
R always secure the child in a child restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child.
R always observe the instructions and safety
notes on "Children in the vehicle"
(Y page 59) in addition to the child restraint
system manufacturer's installation and oper-
ating instructions
R always observe the instructions and safety
notes on the "Occupant Classification System (OCS)" (Y page 51) G
WARNING
The seat belts may not perform their intended protective function if:
R they are damaged, modified, extremely
dirty, bleached or dyed
R the seat belt buckle is damaged or
extremely dirty
R the Emergency Tensioning Devices, belt
anchorages or inertia reels have been modi-
fied.
Seat belts may be damaged in an accident,
although the damage may not be visible, e.g.
due to splinters of glass. Modified or damaged
seat belts may tear or fail, e.g. in an accident. Modified Emergency Tensioning Devices
could accidentally trigger or fail to deploy
when necessary. This poses an increased risk
of injury or even fatal injury.
Never modify the seat belts, Emergency Ten-
sioning Devices, belt anchorages and inertia
reels. Make sure that the seat belts are
undamaged, not worn out and clean. Follow-
ing an accident, have the seat belts checked
immediately at a qualified specialist work-
shop.
Only use seat belts that have been approved for
your vehicle by Mercedes-Benz. Proper use of the seat belts Observe the safety notes on the seat belt
(Y
page 46).
Every vehicle occupant must observe the fol-
lowing notes to ensure a properly worn seat belt can provide full protection. Also make sure that all vehicle occupants are always wearing the
seat belt correctly while the vehicle is in motion.
When fastening the seat belt, always make sure
that:
R the seat belt buckle tongue is inserted only
into the belt buckle belonging to that seat
R the seat belt is pulled tight across your body
Avoid wearing bulky clothing, e.g. a winter
coat.
R the seat belt is not twisted
Only then can the forces which occur be dis-
tributed over the area of the belt.
R the shoulder section of the belt is routed
across the center of your shoulder
The shoulder section of the seat belt should
not touch your neck or be routed under your
arm or behind your back. Where possible,
adjust the seat belt to the appropriate height.
R the lap belt is taut and passes across your lap
as low down as possible
The lap belt must always be routed across
your hip joints and not across your abdomen.
This applies particularly to pregnant women.
If necessary, push the lap belt down to your
hip joint and pull it tight using the shoulder
section of the belt.
R the seat belt is not routed across sharp, poin-
ted or fragile objects
If you have such items located on or in your
clothing, e.g. pens, keys or eyeglasses, store
these in a suitable place.
R only one person is using a seat belt
Infants and children must never travel sitting
on the lap of a vehicle occupant. In the event
of an accident, they could be crushed
between the vehicle occupant and seat belt.
R objects are never secured with a seat belt if
the seat belt is also being used by one of the
vehicle's occupants
Also ensure that there are never objects
between a person and the seat, e.g. cushions.
Seat belts are only intended to secure and
restrain vehicle occupants. Always observe the
"Loading guidelines" for securing objects, lug-
gage or loads (Y page 295). Occupant safety
47Safety Z

Fastening and adjusting the seat belts
Observe the safety notes on the seat belt
(Y
page 46) and the notes on correct use of seat
belts (Y page 47). Basic illustration
X Adjust the seat (Y page 97).
The seat backrest must be in an almost
upright position.
X Pull the seat belt smoothly from the belt outlet
and engage belt tongue 0044into belt
buckle 0043.
The seat belt on the driver’s seat and the
front-passenger seat may be tightened auto-
matically, see "Belt adjustment"
(Y page 48).
X If necessary, pull up on the shoulder section
of the seat belt to tighten the belt across your
body.
The shoulder section of the seat belt must
always be routed across the center of the shoul- der. Adjust the belt outlet if necessary.
X To raise: slide the belt outlet up.
The belt outlet will engage in various posi-
tions.
X To lower: hold belt outlet release 0087and slide
the belt outlet down.
X Let go of belt outlet release 0087in the desired
position and make sure that the belt outlet
engages.
All seat belts except the driver's seat belt are
equipped with a special seat belt retractor to
securely fasten child restraint systems in the
vehicle. Further information can be found under "Special seat belt retractor" (Y page 60).Releasing seat belts !
Make sure that the seat belt is fully rolled up.
Otherwise, the seat belt or belt tongue will be
trapped in the door or in the seat mechanism. This could damage the door, the door trim
panel and the seat belt. Damaged seat belts
can no longer fulfill their protective function
and must be replaced. Visit a qualified spe-
cialist workshop.
X Press the release button in the belt buckle,
hold the belt tongue firmly and guide the belt
back.
Seat belt adjustment The belt adjustment is a convenience function
integrated into PRE-SAFE
®
. With this function,
the driver's and front-passenger seat belts are
adjusted to the upper body of the vehicle occu-
pant.
The seat belt strap will slightly tighten if:
R the belt tongue is inserted into the buckle and
R the ignition is switched on
The seat belt adjustment will apply a certain
tightening force if any slack is detected between
the vehicle occupant and the seat belt. Do not
grab hold of the seat belt.
The belt adjustment can be switched on and off using the on-board computer (Y page 241).
Belt warning for the driver and front
passenger The
0076 seat belt warning lamp in the instru-
ment cluster is a reminder that all vehicle occu-
pants must wear their seat belts. It may light up
continuously or flash. In addition, there may be
a warning tone.
Regardless of whether the driver's seat belt has
already been fastened, the 0076seat belt warn-
ing lamp lights up for six seconds each time the
engine is started. If the front doors are closed
and the driver's or front-passenger seat belt has not been fastened, the 0076seat belt warning
lamp lights up again after the six seconds. As
soon as the driver's and front-passenger seat
belts are fastened or a front door is opened
again, the 0076seat belt warning lamp goes out.
If the driver's seat belt is not fastened after the engine is started, an additional warning tone will
sound. The warning tone switches off after six 48
Occupant safetySafety