2019 MERCEDES-BENZ GLS start stop button

Important safety notes
ATTENTION ASSIST is only an aid to the driver. It
might not always recognize fatigue or increasing
inattentiveness in time or fail to recognize them at all. The system is not a substitute for a well-
rested and attentive driver.
The functionality of ATTENTION ASSIST is
restricted and warnings may be delayed or not
occur at all:
R if the length of the journey is less than approx-
imately 30 minutes
R if the road condition is poor, e.g. if the surface
is uneven or if there are potholes
R if there is a strong side wind
R if you have adopted a sporty driving style with
high cornering speeds or high rates of accel-
eration
R if you are predominantly driving slower than
37 mph (60 km/h) or faster than 125 mph
(200 km/h)
R if you are driving with the Active Steering
Assist of Active Distance Assist DISTRONIC
activated
R if the time has been set incorrectly
R in active driving situations, such as when you
change lanes or change your speed
The attention level evaluation is deleted and
restarts when the journey is continued, if:
R you switch off the engine
R you take off your seat belt and open the driv-
er's door, e.g. for a change of drivers or to
take a break
Displaying the attention level You can have current status information dis-
played in the assistance menu (Y page 238) of
the on-board computer. X
Select the Assistance display for ATTENTION
ASSIST using the on-board computer
(Y page 238).
The following information is displayed: R The length of the journey since the last break.
R The attention level determined by ATTENTION
ASSIST, displayed in a bar display in five levelsfrom high to low.
R If ATTENTION ASSIST is unable to calculate
the attention level and cannot output a warn-
ing, the System suspended
System suspended message
appears. The bar display then changes the
display, e.g. if you are driving at a speed below 37 mph (60 km/h) or above 125 mph
(200 km/h).
Activating ATTENTION ASSIST X
Activate ATTENTION ASSIST using the on-
board computer (Y page 239).
The system determines the attention level of
the driver depending on the setting selected:
Standard selected: the sensitivity with which
the system determines the attention level is set to normal.
Sensitive selected: the sensitivity is set higher.
The attention level detected by ATTENTION
ASSIST is adapted accordingly and the driver is
warned earlier.
When ATTENTION ASSIST is deactivated, the
00AD symbol and OFF appear in the multifunc-
tion display in the assistance display when the
engine is running.
When ATTENTION ASSIST has been deactivated, it is automatically reactivated after the engine
has been stopped. The sensitivity selected cor-
responds to the last selection activated (stand-
ard/sensitive).
Warning in the multifunction display If fatigue or increasing lapses in concentration
are detected, a warning appears in the multi-
function display:
Attention AttentionAssist:
Assist:Take
Takea
a
Break!
Break!
In addition to the message shown in the multi-
function display, you will then hear a warning
tone.
X If necessary, take a break.
X Confirm the message by pressing the 0076
button on the steering wheel. Driving systems
205Driving and parking Z

i
Set the time using the multimedia system;
see the Digital Operator's Manual.
Possible displays in the multifunction dis-
play:
R 0097Gearshift recommendation, when shifting
manually (Y page 152)
R 005D Active Parking Assist (Y page 192)
R CRUISE
CRUISE Cruise control (Y page 171)
R 00CE Adaptive Highbeam Assist
(Y page 118)
R 00D6 ECO start/stop function (Y page 144)
R 00D9 HOLD function (Y page 183)
R 004F Active Distance Assist DISTRONIC
Active Steering Assist (Y page 238)
R DSR DSR Downhill Speed Regulation
(Y page 215) Menus and submenus
Menu overview
Press the 0059or0065 button on the steering
wheel to call up the menu bar and select a menu.
Operating the on-board computer (Y page 231).
Depending on the equipment installed in the
vehicle, you can call up the following menus:
R Trip
Trip menu (Y page 233)
R Navi
Navi menu (navigation instructions)
(Y page 234)
R Audio
Audio menu (Y page 236)
R Tel
Tel menu (telephone) (Y page 237)
R DriveAssist
DriveAssist menu (assistance)
(Y page 238)
R Serv.
Serv. menu (Y page 239)
R Sett.
Sett. menu (settings) (Y page 240)
R ON&OFFROAD
ON&OFFROAD menu (Ypage 242)
R AMG
AMG menu (Mercedes-AMG vehicles)
(Y page 242) Trip menu
Standard display X
Press and hold the 0038button on the steer-
ing wheel until the Trip
Tripmenu with trip odom-
eter 0043and odometer 0044appears.
Trip computer "From Start" or "From
Reset" 0043
Distance
0044 Driving time
0087 Average speed
0085 Average fuel consumption
X Press the 0059or0065 button on the steering
wheel to select the Trip
Tripmenu.
X Press the 0063or0064 button to select
From start
From start orFrom reset
From reset.
The values in the From
FromStart
Start submenu are cal-
culated from the start of a journey, while the
values in the From Reset From Resetsubmenu are calcu-
lated from the last time the submenu was reset
(Y page 234).
The From Start
From Start trip computer is automatically
reset if:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 miles have been exceeded.
The From reset From reset trip computer is automatically
reset if the value exceeds 9,999 hours or
99,999 miles. Menus and submenus
233On-board computer and displays Z

Telephone menu
Introduction G
WARNING
If you operate information systems and com-
munication equipment integrated in the vehi- cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle. There is a risk of an acci-
dent.
Only operate this equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
When telephoning, you must observe the legal
requirements for the country in which you are
currently driving.
X Switch on the mobile phone (see the manu-
facturer’s operating instructions).
X Switch on the multimedia system (see the
Digital Operator's Manual)
X Establish a Bluetooth ®
connection to the mul-
timedia system (see the Digital Operator's
Manual).
X Press the 0059or0065 button on the steering
wheel to select the Tel Telmenu.
You will see one of the following display mes-
sages in the multifunction display:
R Phone READY Phone READY or the name of the network
provider: the mobile phone has found a net-
work and is ready to receive.
R Phone No Service
Phone No Service: there is no network
available or the mobile phone is searching for
a network.
Accepting a call If someone calls you when you are in the
Tel
Tel
menu, a display message appears in the multi-
function display.
You can accept a call at any time regardless of
the menu selected.
X Press the 0061button on the steering wheel
to accept an incoming call. Rejecting or ending a call You can end or reject a call even if you are not in
the Tel Tel menu.
X Press the 0076button on the steering wheel
to reject or end a call.
Selecting an entry from the phone book X
Press the 0059or0065 button on the steering
wheel to select the Tel
Telmenu.
X Press the 0063,0064or0076 button to
switch to the phone book.
X Authorize access to the phone book on the
phone.
X Press the 0063or0064 button to select the
desired name.
or
X To start rapid scrolling: press and hold the
0063 or0064 button for longer than one sec-
ond.
Rapid scrolling stops when you release the
button or reach the end of the list.
X If only one telephone number is stored for
a name: press the 0061or0076 button to
start dialing.
or X If there is more than one number for a
particular name:
press the0061or0076
button to display the numbers.
X Press the 0063or0064 button to select the
number you want to dial.
X Press the 0061or0076 button to start dialing.
or
X To exit the telephone book: press the0076
or 0038 button.
Redialing The on-board computer saves the last names or
numbers dialed in the redial memory.
X Press the 0059or0065 button on the steering
wheel to select the Tel Telmenu.
X Press the 0061button to switch to the redial
memory.
X Press the 0063or0064 button to select the
desired name or number. Menus and submenus
237On-board computer and displays Z

If the multifunction display shows oil temper-
ature 0085or0084 in blue, the engine or the
transmission are not yet at normal operating
temperature. Avoid driving at full engine out-
put during this time.
SETUP 0043
Engine mode (Comfort Comfort/Sport Sport/Sport +Sport +)
0044 Suspension setting Comfort
Comfort/SportSport/
Sport +
Sport +
0087 Transmission position D
D/M M
0085 ESP ®
mode (ON ON/OFFOFF)
SETUP displays the following information/func- tions:
R the digital speedometer
R the gear indicator
R the engine mode
R the suspension mode
R the transmission position
R the ESP ®
(Electronic Stability Program) mode
X Press the 0059or0065 button on the steering
wheel to select the AMG
AMGmenu.
X Press the 0063button repeatedly until SETUP
is displayed.
RACE TIMER Displaying and starting RACETIMER
The RACETIMER is only intended for use on a
closed race circuit. Do not use the function on
public roads. 0043
Lap
0044 RACETIMER You can start the RACETIMER when the engine is
running or if the SmartKey is in position 0048in the
ignition lock.
X Press the 0059or0065 button on the steering
wheel to select the AMG
AMG menu.
X Press the 0063button repeatedly until the
RACETIMER is shown.
X To start: press the 0076button to start the
RACETIMER.
Displaying the intermediate time X
Press the 0059or0065 button to select
Interm. Time Interm. Time.
X Press 0076to confirm.
The intermediate time is displayed for five
seconds.
Starting a new lap 0043
RACETIMER
0044 Fastest lap time (best lap)
0087 Lap
X Press 0076to confirm New Lap
New Lap.
i It is possible to store a maximum of sixteen
laps. The 16th lap can only be completed with
Finish Lap
Finish Lap.
Stopping the RACETIMER Menus and submenus
243On-board computer and displays Z

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

Where possible, let the engine cool down and
touch only the components described in the
following. G
WARNING
The cooling system is pressurized, particularly when the motor is warm. If you open the cap, you could be scalded if hot coolant sprays out.
There is a risk of injury.
Let the engine cool down before you open the
cap. Wear protective gloves and protective
eyewear when opening. Open the cap slowly
to release pressure.
The coolant level may only be checked and cool- ant refilled when the engine and engine coolingsystem have cooled down. G
WARNING
Windshield washer concentrate is highly flam- mable. If windshield washer concentrate getsonto hot components of the engine or the
exhaust system, it can ignite. There is a risk of
fire and injury.
Make sure that windshield washer concen-
trate is not spilled in the vicinity of the filler
neck.
Checking coolant level X
Park the vehicle on a level surface.
Only check the coolant level when the vehicle
is on a level surface and the engine has cooled
down.
X Turn the SmartKey to position 0048in the igni-
tion lock (Y page 140).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 142).X
Check the coolant temperature gauge in the
multifunction display.
The coolant temperature must be below
158 ‡ (70 †).
X Turn the SmartKey to position in the ignition
lock 0092(Ypage 140).
X On vehicles with KEYLESS-GO, press the
Start/Stop button (Y page 142).
X Press the Start/Stop button (Y page 142).
X Slowly turn cap 0043half a turn counter-clock-
wise and allow excess pressure to escape.
X Turn cap 0043further counter-clockwise and
remove it.
If the coolant is at the level of marker bar 0087
in the filler neck when cold, there is enough
coolant in coolant expansion tank 0044.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar 0087in the filler neck
when warm, there is enough coolant in expan- sion tank 0044.
X If necessary, add coolant that has been tested
and approved by Mercedes-Benz.
X Replace cap 0043and turn it clockwise as far as
it will go.
For further information on coolant, see
(Y page 387).
Adding washer fluid to the windshield
washer system Example: washer fluid reservoir
X To open: pull cap0043upwards by the tab.
X Add the premixed washer fluid.
X To close: press cap 0043onto the filler neck
until it engages.
If the washer fluid level drops below the recom- mended minimum of 1 liter, a message appears in the multifunction display prompting you to
add washer fluid (Y page 273).324
Engine compartmentMaintenance and care

front-passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position
005Dauto-
matically and locks the wheels. You can
prevent this by shifting the automatic trans- mission to 005Cbeforehand.
R Vehicles with KEYLESS-GO:
Do not open the driver's door or front-
passenger door when the engine is
switched off. Otherwise, the automatic
transmission selects park position 005Dauto-
matically and locks the wheels.
Observe the following to make sure that the
automatic transmission stays in position 005C:
X Make sure the vehicle is stationary and the
ignition is switched off.
X Turn the SmartKey to position in the ignition
lock 0048(Ypage 140).
Use the SmartKey instead of the Start/Stop
button on vehicles with KEYLESS-GO.
X Depress and hold the brake pedal.
X Shift the automatic transmission to position
005C.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the SmartKey
in the ignition lock.
You can wash the vehicle in an automatic car
wash from the very start.
If the vehicle is very dirty, pre-wash it before
cleaning it in an automatic car wash.
After using an automatic car wash, wipe off wax from the windshield and the wiper blades. This
will prevent smears and reduce wiping noises
caused by residue on the windshield.
Washing by hand In some countries, washing by hand is only
allowed at specially equipped washing bays.
Observe the legal requirements in all countries
concerned.
X Do not use hot water and do not wash the
vehicle in direct sunlight.
X Use a soft sponge to clean.
X Use a mild cleaning agent, such as a car
shampoo approved by Mercedes-Benz.
X Thoroughly hose down the vehicle with a gen-
tle jet of water.
X Do not point the water jet directly towards the
air inlets. X
Use plenty of water and rinse out the sponge
frequently.
X Rinse the vehicle with clean water and dry
thoroughly with a chamois.
X Do not let the cleaning agent dry on the paint-
work.
When using the vehicle in winter, remove all
traces of road salt deposits carefully and as
soon as possible.
Power washers G
WARNING
The water jet from a circular jet nozzle (dirt
blasters) can cause invisible exterior damage to the tires or chassis components. Compo-
nents damaged in this way may fail unexpect-edly. There is a risk of an accident.
Do not use power washers with circular jet
nozzles to clean the vehicle. Have damaged
tires or chassis components replaced imme-
diately.
! Always maintain a distance of at least 12 in
(30 cm) between the vehicle and the power
washer nozzle. Information about the correct
distance is available from the equipment
manufacturer.
Move the power washer nozzle around when
cleaning your vehicle.
Do not aim directly at any of the following:
R Tires
R Door gaps, roof gaps, joints, etc.
R Electrical components
R Battery
R Plug-type couplings
R Light bulbs
R Seals
R Trim elements
R Ventilation slots
Damaged seals or electrical components can
lead to leaks or failures.
! Vehicles with decorative film: parts of your
vehicle are covered with decorative film.
Maintain a distance of at least 27.5 in (70 cm)
between the film-covered parts of the vehicle and the nozzle of the power washer.
Information about the correct distance is
available from the equipment manufacturer. Care
327Maintenance and care Z

X
Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 158).
X If possible, bring the front wheels into the
straight-ahead position.
X Vehicles with the AIRMATIC package:
make sure that the normal vehicle level is
selected (Y page 187).
X Vehicles with the Off-Road Engineering
package:
make sure that the normal level is
selected (Y page 180).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove the
SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the driv-
er's door.
The vehicle electronics are now in position
0092. This means no SmartKey is in the ignition
lock.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 140).
X Make sure that the passengers are not endan-
gered as they do so. Make sure that no one is
near the danger area while a wheel is being
changed. Anyone who is not directly assisting in the wheel change should, for example,
stand behind the barrier.
X Get out of the vehicle. Pay attention to traffic
conditions when doing so.
X Close the driver's door.
X Unload heavy luggage.
i Only operate the tire inflation compressor
using a 12 V socket, even if the ignition is
turned off (Y page 307).
An emergency cut-out ensures that the on-
board voltage does not drop too low. If the on-
board voltage is too low, the power to the
sockets is automatically cut. This ensures
that there is sufficient power to start the
engine. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive your vehi- cle even if there is a total loss of pressure in one
or more tires. The affected tire must not show
any clearly visible damage.
You can recognize an MOExtended tire by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-bear-
ing capacity and the speed index (Y page 367).
MOExtended tires may only be used in conjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor.
If a pressure loss warning message appears in the multifunction display:
R observe the instructions in the display mes-
sages (Y page 268).
R check the tire for damage
R if driving on, observe the following notes
The driving distance possible in run-flat mode is approximately 50 miles (80 km) when the vehi-
cle is partially laden and approximately 18 miles
(30 km) when the vehicle is fully laden.
In addition to the vehicle load, the driving dis-
tance possible depends upon:
R Vehicle speed
R Road condition
R Outside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving conditions
or maneuvers, or it can be increased through a
moderate style of driving.
The driving distance possible in run-flat mode is counted from the moment the tire pressure loss warning appears in the multifunction display.
You must not exceed a maximum permissible
speed of 50 mph (80 km/h).
i When replacing one or all tires, please
observe the following specifications for your
vehicle's tires:
R Size
R Type and
R The "MOExtended" mark
If a tire has gone flat and cannot be replaced with an MOExtended tire, a standard tire may 336
Flat tireBreakdown assistance