MERCEDES-BENZ GLS 2023 Owners Manual

a break where necessary. If you do not take abreak and ATTENTION ASSIST continues to detectincreasing lapses in concentration, you will bewarned again aser a minimum of 15 minutes.
You can have the following status information for
ATTENTION ASSIST displayed in the assistance
menu of the on-board computer:
= The length of the journey since the last break.
= The attention level determined by ATTENTION
ASSIST:
- the fuller the circle, the higher the atten-
tion level determined
- as your attention wanes, the circle in the
center of the display becomes smaller
If ATTENTION ASSIST is unable to calculate the attention level and cannot issue a warning, the
System Suspended message appears.
If a warning is given in the Instrument Display, the multimedia system oMers to search for a rest
area. You can select a rest area and start naviga-
tion to this rest area. This function can be activa-
ted and deactivated in the multimedia system.
If ATTENTION ASSIST is deactivated, the Û
symbol appears in the assistance graphic in the Instrument Display. Aser the vehicle is started,
ATTENTION ASSIST is automatically activated. The last selected sensitivity level remains stored.
System limits
ATTENTION ASSIST is active in the 37 mph
(60 km/h) to 124 mph (200 km/h) speed range.
Particularly in the following situations, ATTENTION ASSIST only functions in a restricted manner and
warnings may be delayed or not occur:
= If you have been driving for less than approx-
imately 30 minutes.= If the road condition is poor (uneven road sur-
face or potholes).
= If there is a strong side wind.
= If you adopt a sporty driving style (high corner-
ing speeds or high rates of acceleration).
= If Active Steering Assist is activated and active
(  page 231).
= If the time has been set incorrectly.
= If you change lanes and vary your speed fre-
quently in active driving situations.
The ATTENTION ASSIST drowsiness or alertness assessment is reset and restarted when continu-ing the journey in the following situations:
= If you switch oM the vehicle.
= If you unfasten your seat belt and open the
driver\bs door (e.g. to change drivers or take abreak).Driving and parking219

Setting ATTENTION ASSIST
Multimedia system:
4 © 5
Settings 5
Assistance
5 Attention Assist
Setting optionsSelect Standard , Sensitive or Off.
Suggesting a rest area
Select Suggest Rest Area .Activate or deactivate the function.
If ATTENTION ASSIST detects fatigue or increasing lack of attention, it suggests a rest
area in the vicinity.Select the suggested rest area. You are guided to the selected rest area.
Speed control cruise control
Function of cruise control
Cruise control regulates the speed to the value
selected by the driver.
If you accelerate to overtake, forexample, the
stored speed is not deleted. If you remove your
foot from the accelerator pedal aser overtaking,
cruise control will resume speed regulation back to the stored speed.
You can store any speed above 15 mph
(20 km/h) up to the maximum design speed.
Observe the notes on driving systems and yourresponsibility; you may otherwise fail to recognizedangers (  page 211).
Mercedes!

Operating cruise control&WARNING Risk of accident due to stored
speed
If you call up the stored speed and this is
lower than your current speed, the vehicle
decelerates.
Take into account the traPc situation
before calling up the stored speed.
Requirements: = ESP n
must be activated, but not intervening.
= The vehicle speed is at least 15 mph
(20 km/h).
= The transmission is in position [.
Operating cruise control
Press the rocker switches on the steering
wheel control panel up or down to the desired
position.
Activating cruise control
Select M with the right rocker switch.
Activating cruise control
Press rocker 1 switch M up or N
down.
The current speed is stored and maintained by
the vehicle.
or
Select / with the les rocker switch.
The last stored speed is called up and main-
tained by the vehicle.
If the last stored speed has previously been
deleted, the current vehicle speed is stored.\bWhen you switch oM the vehicle, the last
speed stored is deleted.
Increasing or decreasing the stored speed
1 mph (1 km/h): press rocker switch 1 up
M or down N to the pressure point.
or
5 mph (10 km/h): press rocker switch 1 up
M or down N beyond the pressure
point.
or
Accelerate the vehicle to the desired speed
and press rocker switch 1 up M .Driving and parking221

Adopting a detected speed Activate cruise control.If a traPc sign has been detected and is dis-
played in the instrument cluster: select /
with the les rocker switch.
The maximum permissible speed shown by the
traPc sign is stored and the vehicle maintains
or does not exceed this speed.
Deactivating cruise control
Select O with the les rocker switch.
Deactivating cruise control
Select N with the right rocker switch.\bIf you brake, deactivate ESP n
or if ESP n
inter-
venes, cruise control is deactivated.
Active Distance Assist DISTRONIC
Function of Active Distance Assist DISTRONIC DISTRONIC Active Distance Assist maintains the
set speed when driving freely. If vehicles are
detected ahead, the set distance is maintained, if necessary until the vehicle comes to a standstill.
The vehicle accelerates or brakes depending on
the distance to the vehicle in front and the set speed. The speed and distance to the vehicle in
front are set and saved using the steering wheel.
Available speed range: = Vehicles without Driving Assistance Package:
15 mph (20 km/h) - 120 mph (200 km/h)
= Vehicles with Driving Assistance Package:
15 mph (20 km/h) - 130 mph (210 km/h)\bThe maximum speed is reduced when driving
in LOW RANGE oM-road gear ( page 198).
Other features of Active Distance Assist
DISTRONIC:
= Adjusts the driving style depending on the
selected drive program (fuel-saving, comforta-
ble or dynamic)
= Initiates acceleration to the stored speed if the
turn signal indicator is switched on to change
to the overtaking lane
= Vehicles with Driving Assistance Package:
- Reacts to stationary vehicles detected in
urban speed ranges (except bicycles and
motorcycles)
- Takes one-sided overtaking restrictions
into account on highways or on multi-lane
roads with separate roadways (country-
dependent)
Vehicles with Driving Assistance Package and
Parking Package: if the vehicle has been braked to
a standstill on multi-lane, separate roadways by Active Distance Assist DISTRONIC, it can auto-
matically follow the vehicle in front when driving oM again within 30 seconds. If a critical situation
is detected when driving oM, a visual and acoustic
warning is given indicating that the driver must
now take control of the vehicle. The vehicle is not
accelerated any further.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognize dangers (  page 211).222Driving and parking

Active Distance Assist DISTRONIC displays in theInstrument Display
Assistant display
1Route-based speed adaptation: type of routeevent (  page 227)2Vehicle in front3Distance indicator4Set speciNed distance5Active Lane Change Assist lane change dis-
playPermanent status display of Active Distance
Assist DISTRONIC = M (white): Active Distance Assist
DISTRONIC selected, speciNed distance set
= M (white vehicle, green speedometer):
Active Distance Assist DISTRONIC active, speciNed distance set and vehicle detected
= M (green): Active Distance Assist
DISTRONIC active, speciNed distance set and
vehicle detected
= r : Route-based speed adaptation active
(  page 227).
The stored speed is shown along with the perma- nent status display and highlighted on the speed-ometer. When Active Distance Assist DISTRONIC is passive, the speed is grayed out.\bOn highways or high-speed major roads, thegreen

=In parking garages or on roads with steep
uphill or downhill gradients.
= If there are narrow vehicles in front, such as
bicycles or motorcycles.
In addition, on slippery roads, braking or acceler- ating can cause one or several wheels to lose
traction and the vehicle could then skid.
Do not use Active Distance Assist DISTRONIC in these situations.&WARNING Risk of accident from accelera-
tion or braking by Active Distance Assist
DISTRONIC
Active Distance Assist DISTRONIC may accel-
erate or brake in the following cases, for
example:
= If the vehicle pulls away using Active Dis-
tance Assist DISTRONIC.
= If the stored speed is called up and is con-
siderably faster or slower than the cur-
rently driven speed.
= If Active Distance Assist DISTRONIC no
longer detects a vehicle in front or does
not react to relevant objects.Always carefully observe the traPc con-
ditions and be ready to brake at all
times.Take into account the traPc situation
before calling up the stored speed.&WARNING Risk of accident due to insuP-
cient deceleration by Active Distance
Assist DISTRONIC
Active Distance Assist DISTRONIC brakes your vehicle with up to 50% of the possible deceler-
ation. If this deceleration is not suPcient,
Active Distance Assist DISTRONIC alerts you with a visual and acoustic warning.
Adjust your speed and maintain a suita-
ble distance from the vehicle in front.Brake the vehicle yourself and/or take
evasive action.&WARNING Risk of accident if detection
function of Active Distance Assist DISTRONIC is impaired
Active Distance Assist DISTRONIC does not
react or has a limited reaction:
= when driving on a diMerent lane or when
changing lanes
= to pedestrians, animals, bicycles or sta-
tionary vehicles, or unexpected obstacles
= to complex traPc conditions
= to oncoming vehicles and crossing traPc
As a result, Active Distance Assist DISTRONIC may neither give warnings nor intervene in
such situations.
Always observe the traPc conditions
carefully and react accordingly.
Operating Active Distance Assist DISTRONIC
Requirements: = The electric parking brake is released.
= ESP n
is activated and is not intervening.
224Driving and parking

=The transmission is in position [.
= The driver\bs door is closed.
= Check of the radar sensor system has been
successfully completed.
= Parking Assist PARKTRONIC is not being used
to park the vehicle or to exit from a parking
space.
= DSR is deactivated.
= Vehicles with OM-road package: the G
drive program is deactivated.To operate Active Distance Assist DISTRONIC: press the rocker switches on the
steering wheel control unit up or down to the desired position.
Activating/deactivating Active Distance Assist
DISTRONIC
Press button H.
Activating Active Distance Assist DISTRONIC
To activate without a stored speed: press
rocker switch 1 up M or down N, or
select / with the les rocker switch.
or
To activate with a stored speed: select /
with the les rocker switch.Remove your foot from the accelerator pedal.
The current speed is stored and maintained by
the vehicle.
Adopting a detected speed limit
Activate Active Distance Assist DISTRONIC.If a traPc sign has been detected and is dis-
played in the instrument cluster: select /
with the les rocker switch.
The maximum permissible speed on the traPc
sign is adopted as the stored speed. The vehi- cle adapts its speed to that of the vehicle infront, but only up to the stored speed.
Pulling away with Active Distance Assist
DISTRONIC
Activate Active Distance Assist DISTRONIC and remove your foot from the brake pedal.Driving and parking225

Select / with the les rocker switch.
or
Depress the accelerator pedal brieOy and
Nrmly.
The functions of Active Distance Assist
DISTRONIC continue to be carried out.
Deactivating Active Distance Assist DISTRONIC
&WARNING Risk of an accident due to
Active Distance Assist DISTRONIC being
active when you leave the driver\bs seat
If you leave the driver\bs seat while the vehicle
is being braked by Active Distance Assist
DISTRONIC only, the vehicle can roll away.
Always deactivate Active Distance Assist
DISTRONIC and secure the vehicle to
prevent it from rolling away before you
leave the driver\bs seat.Select O with the les rocker switch.\bIf you brake, deactivate ESP n
or if ESP n
inter-
venes, Active Distance Assist DISTRONIC is
deactivated.Increasing or decreasing the speed 1 mph (1 km/h): press rocker switch 1 up
M or down N to the pressure point.
or
5 mph (10 km/h): press rocker switch 1 up
M or down N beyond the pressure
point.
or
Accelerate the vehicle to the desired speed
and press rocker switch 1 up M .
Changing the speciNed distance to the vehicle in
front
To reduce the speciNed distance: press the
right rocker switch up ( Ñ).To increase the speciNed distance: press the
right rocker switch down ( Ò).
Function of Active Speed Limit Assist
If a change in the speed limit of 12 mph
(20 km/h) or more is detected and automatic
adoption of speed limits is activated, the new speed limit is automatically adopted as the storedspeed (  page 241).
The driven speed is adjusted when the vehicle is
level with the traPc sign at the latest. In the case
of signs indicating entry into an urban area, the speed is adapted according to the speed permit-
ted within the urban area. The speed limit display in the Instrument Display is always updated when the vehicle is level with the traPc sign.
If there is no speed restriction on an unlimited
stretch of road (e.g. on a freeway), the recom- mended speed is automatically adopted as thestored speed. The system uses the speed stored
on an unlimited stretch of road as the recommen-
ded speed. If you do not alter the stored speed on
an unlimited stretch of road, the recommended
speed is 80 mph (130 km/h).
If Active Distance Assist DISTRONIC has been put
into passive mode by pressing the accelerator pedal, only speed limits that are higher than the
set speed are adopted.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognizedangers (  page 211).226Driving and parking

System limits
The system limits of TraPc Sign Assist apply to
the detection of traPc signs (  page 240).
Speed limits below 12 mph (20 km/h) are not
automatically adopted by the system as the stored speed. Temporary speed restrictions (e.g. for a
certain time or due to weather conditions) cannot
be properly detected by the system. The maxi- mum permissible speed applying to a vehicle witha trailer is not detected by the system.
Adjust the speed in these situations.&WARNING Risk of accident due to Active
Speed Limit Assist adapting the vehicle\bs
speed
The speed adopted by Active Speed Limit
Assist may be too high or incorrect in some
individual cases, such as:
= at speed limits below 12 mph (20 km/h)
= in wet conditions or in fog
= when towing a trailer
Ensure that the driven speed complies
with traPc regulations.Adjust the driving speed to suit current
traPc and weather conditions.
Function of route-based speed adaptation
When Active Distance Assist DISTRONIC is activa-
ted, the vehicle speed will be adapted accordingly
to the route events ahead. Depending on the drive program selected, the vehicle negotiates a routeevent ahead in an economical, comfortable or
dynamic manner. When the route event has been
passed, the vehicle accelerates again to the stored speed. The set distance to the vehicle in
front, vehicles detected ahead and speed restric-
tions ahead are taken into account.
You can activate and deactivate route-based
speed adaptation in the multimedia system (  page 228).
The following route events are taken into account: = Bends
= T-intersections, traPc circles and toll stations
= Turns and exits
=TraPc jams ahead (only with Live TraPc Infor-
mation )\bWhen the toll station is reached, Active Dis- tance Assist DISTRONIC adopts the speed asthe stored speed.
Also, the speed is reduced if the turn signal indi-
cator to change lanes is switched on and one of
the following situations is detected:
= Turning at intersections
= Driving on slowing-down lanes
= Driving on lanes adjacent to slowing-down
lanes
The driver is responsible for choosing the right speed and observing other road users. This
applies in particular to intersections, traPc circles
and traPc lights, as route-based speed adaptation
does not brake the vehicle to a standstill.
When route guidance is active, the Nrst speed
adjustment is carried out automatically. If the turn signal indicator is switched on, the selected route
is conNrmed and further speed adjustment is acti-
vated.
Driving and parking227

Speed adaptation is canceled in the following
cases:
= If the turn signal indicator is switched oM
before the route event.
= If the driver depresses the accelerator or
brake pedal during the process.
System limits
Route-based speed adaptation does not take right of way regulations into account. The driver is
responsible for complying with road traPc regula-
tions and driving at a suitable speed.
The speed adaptation made by the system may
not always be suitable, particularly in the following situations:
= road\bs course not clearly visible
= road narrowing
= varying maximum permissible speeds in indi-
vidual lanes, forexample at toll stations
= wet road surfaces, snow or ice
= when towing a trailer
In these situations the driver must intervene
accordingly.&WARNING Risk of accident in spite of
route-based speed adaptation
Route-based speed adaptation can malfunc-
tion or be temporarily unavailable in the fol-
lowing situations:
= If the driver does not follow the calculated
route
= If map data is not up-to-date or available
= In the event of roadworks
= In bad weather or road conditions
= If the accelerator pedal is depressed
= In the event of electronically displayed
speed limitations
Adapt the speed to the traPc situation.
Setting route-based speed adaptation
Requirements
= Active Distance Assist DISTRONIC is activa-
ted.
= ECO Assist is active.
Multimedia system:
4 © 5
Settings 5
Assistance
5 Route-based SpeedActivate or deactivate the function.
When the function is active, the vehicle speed is adjusted depending on the route events
ahead.\bFurther information on the route-based speed adaptation (  page 227).
Function of Active Stop-and-Go Assist
Active Stop-and-Go Assist helps you when in traf- fic jams on multi-lane roads with separate road-ways by automatically pulling away within up to
60 seconds and with moderate steering maneu-
vers. It orients itself using the vehicle in front and lane markings. Active Stop-and-Go Assist auto-
matically maintains a safe distance from the vehi- cle in front and vehicles cutting in.
Active Stop-and-Go Assist requires you, as the driver, to keep your hands on the steering wheel
at all times so that you are able to intervene at any time to correct the course of the vehicle and
keep it in lane. Observe the notes on driving sys-
228Driving and parking