2019 MERCEDES-BENZ GLS SUV reset

ECO display
The ECO display is not available for Mercedes-
AMG vehicles.
X Press the 0059or0065 button on the steering
wheel to select the Trip
Trip menu.
X Press the 0063or0064 button to select ECO
ECO
DISPLAY
DISPLAY.
If the ignition remains switched off for longer
than four hours, the ECO display will be auto-
matically reset.
For more information on the ECO display, see
(Y page 162).
Displaying the range and current fuel
consumption Mercedes-AMG vehicles:
the menu displays
only the approximate range 0043.
X Press the 0059or0065 button on the steering
wheel to select the Trip
Trip menu.
Digital speedometer X
Press the 0059or0065 button on the steering
wheel to select the Trip
Trip menu.
X Press the 0063or0064 button to select the
digital speedometer.
A gear shift recommendation 0097can also
appear.
Observe the information on gearshift recom-
mendation 0097when shifting manually
(Y page 152).
Mercedes-AMG vehicles: a gearshift recom-
mendation is shown in the status bar of the
multifunction display and not in the digital
speedometer display.
Resetting values X
Press the 0059or0065 button on the steering
wheel to select the Trip
Trip menu.
X Press the 0063or0064 button to select the
function that you wish to reset. X
Press 0076to confirm your selection.
X Press 0064to select Yes
Yes and press 0076to
confirm.
You can reset the values of the following func-
tions: R Trip odometer
R "From Start" trip computer
R "From Reset" trip computer
R ECO display
If you reset the values in the ECO display, the
values in the "From Start" trip computer are also reset. If you reset the values in the "From Start"trip computer, the values in the ECO display are
also reset. Navigation system menu
Displaying navigation instructions In the
Navi Navimenu, the multifunction display
shows navigation instructions.
You can find further information on navigation in
the Digital Operator's Manual in the multimedia system.
X Switch on the multimedia system (see the
Digital Operator's Manual)
X Press the 0059or0065 button on the steering
wheel to select the Navi Navimenu.
Route guidance not active 0043
Direction of travel
0044 Current road 234
Menus and submenusOn-board computer and displays

Audio menu
Selecting a radio station 0043
Active station list
0044 Station frequency with memory position
The multifunction display shows station 0044with
station frequency or station name. The preset
position is only displayed along with station 0044if
this has been stored. You can store TV chan-
nels 0044in the multimedia system.
X Switch on the multimedia system and select
radio (see the Digital Operator's Manual).
X Press the 0059or0065 button on the steering
wheel to select the Audio Audiomenu.
X To select a preset list or station list: press
and briefly hold the 0063or0064 button until
the preset list or station list in the desired
frequency range is shown in the multifunction
display.
X To select a station: briefly press0063
or 0064.
i SIRIUS XM satellite radio functions like a
normal radio.
For more information on radio operation, see "Satellite radio" in the Digital Operator's Man-
ual.
Operating an audio player or audio
media Audio files from various audio players or media
can be played, depending on the equipment
installed in the vehicle.
X Switch on the multimedia system and select
CD or MP3 mode (see the Digital Operator's
Manual).
X Press the 0059or0065 button on the steering
wheel to select the Audio Audiomenu.
X To select the next/previous track: briefly
press the 0063or0064 button.
X To select a track from the track list (rapid
scrolling): press and hold the 0063or0064
button until desired track 0043has been
reached.
If you press and hold 0063or0064, the rapid
scrolling speed is increased. Not all audio
players or media support this function.
If track information is saved on the audio player
or media, the multifunction display will show the number and title of the track. The current track
does not appear in audio mode ( Auxiliary audio
mode: external audio source connected).
Video DVD operation X
Switch on the multimedia system and select
video DVD (see the Digital Operator's Man-
ual).
X Press the 0059or0065 button on the steering
wheel to select the Audio Audiomenu.
X To select the next or previous scene:
briefly press the
0063or0064 button.
X To select a scene from the scene list
(rapid scrolling):
press and hold the 0063
or 0064 button until desired scene 0043has
been reached. 236
Menus and sub
menusOn-board computer and displays

For further information on belt adjustment, see
(Y page 48).
Switching the fold-in mirrors when lock-
ing feature on/off
This function is only available when the vehicle is
equipped with the electrical fold-in function.
When you activate the Auto.
Auto. Mirror Mirror Folding
Folding
function, the exterior mirrors are folded in when
the vehicle is locked. The exterior mirrors fold
out automatically again as soon as you unlock
the vehicle.
X Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett. menu.
X Press the 0064or0063 button to select the
Convenience
Convenience submenu.
X Press 0076to confirm.
X Press the 0064or0063 button to select the
Auto. Mirror Folding
Auto. Mirror Folding function.
If the Auto. Mirror Folding Auto. Mirror Folding function is
switched on, the multifunction display shows the exterior mirror in orange.
X Press the 0076button to save the setting. If you have switched the
Auto. Mirror Fold‐
Auto. Mirror Fold‐
ing
ing on and you fold the exterior mirrors in using
button 0043, they will not fold out automatically
(Y page 111).
You can then only fold out the exterior mirrors
using button 0043.
Restoring the factory settings X
Press the 0059or0065 button on the steering
wheel to select the Sett.
Sett. menu.
X Press the 0064or0063 button to select the
Factory Setting Factory Setting submenu.
X Press 0076to confirm.
The Reset All Settings?
Reset All Settings? message
appears. X
Press the 0064or0063 button to select No Noor
Yes Yes.
X Press 0076to confirm the selection.
If you select Yes
Yes, the multifunction display
shows a confirmation message.
If you want to reset the Daytime Running
Daytime Running
Lights
Lights function in the Light
Lightsubmenu, you
must turn the SmartKey to position 0047in the
ignition lock. ON&OFFROAD menu
X Press the 0059or0065 button on the steering
wheel to select the ON&OFFROAD
ON&OFFROADmenu.
You can view the current off-road program set-
tings in the ON&OFFROAD
ON&OFFROAD menu:
R Vehicles with the Off-Road Engineering pack-
age (Y page 217)
R Vehicles without the Offroad Engineering
package (Y page 216) AMG menu (Mercedes-AMG vehicles)
Warm-up 0043
Digital speedometer
0044 Gear indicator
0087 Upshift indicator
0085 Engine oil temperature
0083 Coolant temperature
0084 Transmission oil temperature
X Press the 0059or0065 button on the steering
wheel to select the AMG AMGmenu.
Upshift indicator: upshift indicatorUp
Up0087
indicates that the engine has reached the
overrevving range when in the manual drive
program.
Engine/transmission oil temperature:
when the engine and transmission are at nor-
mal operating temperature, oil tempera-
ture 0085and 0084are displayed in white in the
multifunction display. 242
Menus and submenusOn-board computer and displays

X
Press the 0038button on the steering wheel.
X Confirm Yes
Yes with 0076.
The RACETIMER interrupts timing if you stop the
vehicle and turn the SmartKey to position 0047in
the ignition lock. If you turn the SmartKey to
position 0049and then press 0076to confirm
Start
Start timing is continued.
Resetting the current lap X Stop the RACETIMER.
X Press the 0059or0065 button to select
Reset Lap
Reset Lap.
X Press 0076to reset the lap time to "0".
Deleting all laps If you switch off the engine, the RACETIMER is
reset to "0" after 30 seconds. All laps are
deleted.
You cannot delete individual stored laps. If you
have stopped 16 laps, the current lap does not
have to be reset.
X Reset the current lap.
X Press 0076to confirm Reset Reset.
Reset Race Timer?
Reset Race Timer? appears in the multi-
function display.
X Press the 0064button to select Yes
Yes and press
the 0076 button to confirm.
All laps are deleted.
Overall statistics 0043
RACETIMER overall evaluation
0044 Total time driven 0087
Average speed
0085 Distance covered
0083 Maximum speed
This function is shown if you have stored at least one lap and stopped the RACETIMER.
X Press the 0059or0065 button on the steering
wheel to select the AMG
AMG menu.
X Press the 0063button repeatedly until the
overall evaluation is shown.
Lap statistics 0043
Lap
0044 Lap time
0087 Average lap speed
0085 Lap length
0083 Top speed during lap
This function is only available if you have stored
at least two laps and have stopped the RACE-
TIMER.
X Press the 0059or0065 button on the steering
wheel to select the AMG AMGmenu.
X Press the 0063button repeatedly until the lap
evaluation is shown.
Each lap is shown in a separate submenu. The fastest lap is indicated by flashing symbol 0043.
X Press the 0063or0064 button to select a dif-
ferent lap evaluation. 244
Menus and submenusOn-board computer and displays

Further information on windshield washer fluid
(Y page 388). ASSYST PLUS
Service message
i If the scheduled service intervals are excee-
ded, this may result in damage to the vehicle.
You can obtain up-to-date information concern-
ing the servicing of your vehicle from a qualified specialist workshop, e.g. an authorized
Mercedes-Benz Center or at
http://www.mbusa.com (USA only).
i The ASSYST PLUS service interval display
does not show any information on the engine
oil level. Observe the notes on the engine oil
level (Y page 322).
The multifunction display shows a service mes-
sage for several seconds, e.g.:
R Service A in .. Days Service A in .. Days
R Service A Due
Service A Due
R Service A Exceeded by .. Days
Service A Exceeded by .. Days
Depending on the operating conditions of the
vehicle, the remaining time or distance until the next service due date is displayed.
The letter A
A or B B, possibly in connection with a
number or another letter, shows the type of ser-
vice. A
A stands for a minor service and B
Bfor a
major service.
Further information can be obtained at a quali-
fied specialist workshop.
The ASSYST PLUS service interval display does
not take into account any periods of time during
which the battery is disconnected.
Maintaining the time-dependent service sched-
ule:
X Note down the service due date displayed in
the multifunction display before disconnect-
ing the battery.
or
X After reconnecting the battery, subtract the
battery disconnection periods from the ser-
vice date shown on the display. Hiding a service message
X Press the 0038or0076 button on the steering
wheel. Displaying service messages
X Switch on the ignition.
X Press the 0059or0065 button on the steering
wheel to select the Serv. Serv.menu.
X Press the 0063or0064 button to select the
ASSYST
ASSYST PLUS
PLUSsubmenu and confirm by press-
ing the 0076button.
The service due date appears in the multi-
function display. Information about Service
Resetting the ASSYST PLUS service
interval display !
If the ASSYST PLUS service interval display
has been inadvertently reset, this setting can
be corrected at a qualified specialist work-
shop.
Have service work carried out as described in the Maintenance Booklet. This may otherwise
lead to increased wear and damage to the
major assemblies or the vehicle.
A qualified specialist workshop will reset the
ASSYST PLUS service interval display after the
service work has been carried out. You can also obtain further information on maintenance
work, for example.
Special service requirements The specified maintenance interval takes only
the normal operation of the vehicle into
account. Under increased load on the vehicle,
maintenance work must be carried out more
frequently, for example:
R Regular city driving with frequent intermedi-
ate stops
R If the vehicle is primarily used to travel short
distances
R Use in mountainous terrain or on poor road
surfaces
R If the engine is often left idling for long periods
Under these or similar conditions, have, for
example, the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must be checked more often. Further information can be
obtained at a qualified specialist workshop. ASSYST PLUS
325Maintenance and care Z

occupants from suffering acid burns should the
battery be damaged in the event of an accident.
In order for the battery to achieve the maximum possible service life, it must always be suffi-
ciently charged.
Like other batteries, the vehicle battery may
discharge over time if you do not use the vehicle. In this case, have the battery disconnected at a
qualified specialist workshop. However, you can also charge the battery with a charger recom-
mended by Mercedes-Benz. Contact a qualified
specialist workshop for further information.
Have the battery charge state checked more
frequently if you use the vehicle mainly for short trips or if you leave it standing idle for a lengthyperiod. Consult a qualified specialist workshop
if you wish to leave your vehicle parked for a long
period of time.
Remove the SmartKey if you park the vehicle
and do not require any electrical consumers.
The vehicle will then use very little energy, thus
conserving battery power.
If the power supply has been interrupted, e.g. if
you reconnect the battery, you will have to:
R set the clock (see the Digital Operator's Man-
ual)
On vehicles with a multimedia system and
navigation system, the clock is set automati-
cally.
R reset the function for automatically folding
the exterior mirrors in/out by folding the mir-
rors out once(Y page 111) Charging the 12 V battery
G
WARNING
During charging and jump-starting, explosive
gases can escape from the battery. There is a risk of an explosion.
Particularly avoid fire, open flames, creating
sparks and smoking. Ensure there is sufficient
ventilation while charging and jump-starting.
Do not lean over a battery. G
WARNING
Battery acid is caustic. There is a risk of injury. Avoid contact with skin, eyes or clothing. Do
not inhale any battery gases. Do not lean over
the battery. Keep children away from batter- ies. Wash away battery acid immediately with
plenty of clean water and seek medical atten-tion. G
WARNING
A discharged battery can freeze at tempera-
tures below freezing point. When jump-start-
ing the vehicle or charging the battery, gases can escape from the battery. There is a risk of
an explosion.
Allow the frozen battery to thaw out before
charging it or jump-starting.
! Only use battery chargers with a maximum
charging voltage of 14.8 V.
! Only charge the battery using the jump-
starting connection point.
The jump-starting connection point is in the
engine compartment (Y page 343).
X Open the hood.
X Connect the battery charger to the positive
terminal and ground point in the same order
as when connecting the donor battery in the
jump-starting procedure (Y page 343).
Keep away from fire and open flames. Do not
lean over a battery. Never charge the battery if it is still installed in the vehicle, unless you use a
battery charger which has been tested and
approved by Mercedes-Benz. A battery charger
unit specially adapted for Mercedes-Benz vehi-
cles and tested and approved by Mercedes-
Benz is available as an accessory. It permits the
charging of the battery in its installed position.
Contact an authorized Mercedes-Benz Center
for further information and availability. Read the battery charger's operating instructions before
charging the battery.
If, at low temperatures, the indicator lamps/
warning lamps in the instrument cluster do not
light up, it is highly likely that the discharged
battery has frozen. In this case you may neither
jump-start the vehicle nor charge the battery.
The service life of a thawed-out battery may be
shorter. The starting characteristics can be
impaired, particularly at low temperatures. Have
the thawed-out battery checked at a qualified
specialist workshop. 342
Battery (vehicle)Breakdown assistance

In order to ensure that the automatic transmis-
sion stays in position 005Cwhen towing away the
vehicle, you must observe the following points:
X Make sure that the vehicle is stationary.
X Turn the SmartKey to position 0048in the igni-
tion lock.
X Depress and hold the brake pedal.
X Shift the automatic transmission to position
005C.
X Leave the SmartKey in position 0048in the igni-
tion lock.
X Release the brake pedal.
X Release the electric parking brake.
X Switch on the hazard warning lamps
(Y page 117).
In order to signal a change of direction when
towing the vehicle with the hazard warning
lamps switched on, use the combination switch as usual. In this case, only the indicator lamps
for the direction of travel flash. After resetting
the combination switch, the hazard warning
lamp starts flashing again. Transporting the vehicle
4MATIC vehicles/vehicles with auto-
matic transmission !
When the vehicle is loaded for transport, the
front and rear axles must be stationary and on
the same transportation vehicle. Positioning
over the connection point of the transport
vehicle is not permitted. The drive train may
otherwise be damaged. All vehicles !
You may only secure the vehicle by the
wheels, not by parts of the vehicle such as
axle or steering components. Otherwise, the
vehicle could be damaged.
The towing eye can be used to pull the vehicle
onto a trailer or transporter for transporting pur-
poses.
X Turn the SmartKey to position 0048in the igni-
tion lock.
X Shift the automatic transmission to position
005C.
As soon as the vehicle has been loaded:
X Prevent the vehicle from rolling away by
applying the electric parking brake.
X Shift the automatic transmission to position
005D.
X Turn the SmartKey to position 0092in the igni-
tion lock and remove it.
X Secure the vehicle.
Securing the vehicle !
After loading, the vehicle must be secured at
all four wheels. Otherwise, the vehicle could
be damaged.
A minimum distance of 8 in (20 cm) up and
4 in (10 cm) down must be maintained to the transport platform.
X Secure all four wheels after loading the vehi-
cle.
Vehicles with ADS PLUS (Adaptive
Damping System PLUS) Important safety notes
G
WARNING
The weaker damping forces of the vehicle to
be transported can cause the vehicle/trailer
combination to swing.
As a result, when transporting vehicles with
Adaptive Damping System PLUS, the vehicle/ trailer combination may start to skid. Conse-
quently, you could lose control of the vehicle.
There is a risk of accident and injury. 348
Towing and tow-startingBreakdown assistance

Some tire pressure tables show only the rim
diameters instead of the full tire size, e.g. R18.
The rim diameter is part of the tire size and can
be found on the tire sidewall (Y page 367).
If the tire pressures have been set to the lower
values for lighter loads and/or lower road
speeds, the pressures should be reset to the
higher values:
R if you want to drive with an increased load
and/or
R if you want to drive at higher speeds
The tire pressures for increased loads and/or
higher road speeds, shown in the tire pressure
table, may have a negative effect on driving
comfort.
If the tire pressure is not set correctly, this can
lead to an excessive build up of heat and a sud- den loss of pressure.
For more information, contact a qualified spe-
cialist workshop. Important notes on tire pressure
G
WARNING
If the tire pressure drops repeatedly, the
wheel, valve or tire may be damaged. Tire
pressure that is too low may result in a tire
blow-out. There is a risk of an accident. R Check the tire for foreign objects.
R Check whether the wheel is losing air or the
valve is leaking.
If you are unable to rectify the damage, con-
tact a qualified specialist workshop. G
WARNING
If you fit unsuitable accessories onto tire
valves, the tire valves may be overloaded and malfunction, which can cause tire pressure
loss. Due to their design, retrofitted tire pres- sure monitors keep the tire valve open. This
can also result in tire pressure loss. There is a
risk of an accident.
Only screw the standard valve cap or other
valve caps approved by Mercedes-Benz for
your vehicle onto the tire valve.
Use a suitable pressure gauge to check the tire
pressure. The outer appearance of a tire does not permit any reliable conclusion about the tire
pressure. On vehicles equipped with the elec-
tronic tire pressure monitor, the tire pressure
can be checked in the on-board computer.
The tire temperature and pressure increase
when the vehicle is in motion. This is dependent
on the driving speed and the load.
Therefore, you should only correct tire pres-
sures when the tires are cold.
The tires are cold:
R if the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and
R if the vehicle has not been driven further than
1 mile (1.6 km)
The tire temperature changes depending on the
outside temperature, the vehicle speed and the
tire load. If the tire temperature changes by
18 ‡ (10 †), the tire pressure changes by
approximately 10 kPa (0.1 bar/1.5 psi). Take
this into account when checking the pressure of
warm tires. Only correct the tire pressure if it is too low for the current operating conditions. If
you check the tire pressure when the tires are
warm, the resulting value will be higher than if
the tires were cold. This is normal. Do not
reduce the tire pressure to the value specified
for cold tires. The tire pressure would otherwise
be too low.
Observe the recommended tire pressures for
cold tires:
R on the Tire and Loading Information placard
on the B-pillar on the driver's side
R in the tire pressure table in the fuel filler flap
(Y page 156)
R printed in yellow on the rim of the emer-
gency/collapsible spare wheel (depending on
vehicle equipment) Underinflated or overinflated tires
Underinflated tires G
WARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition, they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-ing properties and the driving characteristics.There is a risk of an accident. Tire pressure
357Wheels and tires
Z