MERCEDES-BENZ GLA 2023 Owners Manual

In the following situations, the vehicle is held bytransmission position ] and/or by the electric
parking brake:
= The seat belt is unfastened and the driver\bs
door is opened.
= The vehicle is switched oM.
= There is a system malfunction.
= The power supply is insuPcient.
Function of Hill Start Assist
Hill Start Assist holds the vehicle for a short time
when you pull away on a hill under the following
conditions:
= The transmission is in position [ or ^.
= The electric parking brake is released.
This gives you enough time to move your foot
from the brake pedal to the accelerator pedal and
depress it before the vehicle begins to roll away.
&WARNING Risk of accident and injury due
to the vehicle rolling away
Aser a short time, Hill Start Assist no longer
holds the vehicle.
Swisly move your foot from the brake
pedal to the accelerator pedal. Do not
leave the vehicle when it is being held by
Hill Start Assist.
Start-oM assist

qFunction of the start-oM assist
The start-oM assist enables optimal vehicle accel-
eration from a standstill. For this, a suitably high-
grip road surface is required and the tires and
vehicle must also be in good condition.
Do not activate the start-oM assist on public
roads.
Be sure to observe the safety notes and informa-
tion on ESP n
( page 175).

qActivating the start-oM assist&WARNING Risk of skidding and having an
accident from wheels spinning
When you use start-oM assist, individual
wheels could spin and you could lose control
of the vehicle.
If ESP n
is deactivated, there is a risk of skid-
ding and accident!
Make sure that no persons or obstacles are in the close vicinity of your vehicle.Deactivating ESP n
( page 177).Move the steering wheel to the straight-ahead
position.Depress the brake pedal Nrmly with your les
foot and keep it depressed.Engage the [ drive position (  page 160).Select the sportiest available drive program
B or C ( page 156).Rapidly depress the accelerator pedal fully.Driving and parking179

Take your foot oM the brake, but keep the
accelerator pedal depressed.
The vehicle pulls away at maximum accelera-
tion.Switch on ESP n
once the acceleration proce-
dure is complete. ESP n
will otherwise not be
able to stabilize the vehicle if the vehicle starts
to skid or a wheel starts to spin.
Canceling the start-oM assist
Remove your foot from the accelerator pedal.Reactivate the ESP n
.
ATTENTION ASSIST

q Function of ATTENTION ASSIST
ATTENTION ASSIST assists you on long, monoto-
nous journeys, e.g. on highways and trunk roads.
If ATTENTION ASSIST detects indicators of fatigue
or increasing lapses in concentration on the part
of the driver, it suggests taking a break.
ATTENTION ASSIST is only an aid. It cannot
always detect fatigue or lapses in concentration in
time. The system is not a substitute for a well-res-
ted and attentive driver. On long journeys, take
regular breaks in good time that allow for ade-
quate recuperation.
You can choose between two settings:
= Standard: normal system sensitivity.
= Sensitive: higher system sensitivity. The driver
is warned earlier and the attention level detec-
ted by ATTENTION ASSIST is adapted accord-
ingly.
If drowsiness or increasing lapses in concentra-
tion are detected, the ATTENTION ASSIST Take
a Break! warning appears in the Instrument Dis-
play. You can acknowledge the message and take
a break where necessary. If you do not take a
break and ATTENTION ASSIST continues to detect increasing 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.
180Driving and parking

If a warning is given in the Instrument Display, themultimedia 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 191).
= 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).

q Setting ATTENTION ASSIST
Multimedia system: 4 © 5
Settings 5
Assistance
5 Attention Assist
Setting optionsSelect Standard , Sensitive or Off.
Suggesting rest areas
Select Suggest Rest Area .Activate or deactivate the function.
If ATTENTION ASSIST detects fatigue or an increasing lack of attention, it will suggest a
rest area in the vicinity.Select the suggested rest area. You will be guided to the selected rest area.
Speed control cruise control

q 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 172).
Driving and parking181

Mercedes!

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 .
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

q 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)
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)Driving and parking183

-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 172).Active Distance Assist DISTRONIC displays in the
instrument display
Assistant display
1Route-based speed adaptation: type of routeevent (  page 188)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 no vehicle detected
= M (green): Active Distance Assist
DISTRONIC active, speciNed distance set and
vehicle detected
= r : Route-based speed adaptation active
(  page 188).
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

\bIf you depress the accelerator pedal beyondthe setting of the Active Distance Assist
DISTRONIC, the system is switched to passive
mode. The

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.
q Operating Active Distance Assist DISTRONIC
Requirements
= The electric parking brake is released.
= ESP n
is activated and is not intervening.
= 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.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
186Driving and parking

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 display: 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 in
front, 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.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).

qFunction 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 201).
Driving and parking187

The driven speed is adjusted when the vehicle islevel 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 on 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 the stored 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 which are higher than theset speed are adopted.
Observe the notes on driving systems and your responsibility; you may otherwise fail to recognizedangers (  page 172).System limits
The system limits of TraPc Sign Assist apply to
the detection of traPc signs (  page 200).
Speed limits below 12 mph (20 km/h) are not
automatically adopted by the system as the stored speed. Temporary speed restrictions (e.g. applica-
ble for a certain time or due to weather condi-
tions) cannot be properly detected by the system. The maximum permissible speed applying to avehicle with a trailer is not detected by the sys-tem.
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.

qFunction 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 189).
The following route events are taken into account: = Bends
= T-intersections, traPc circles and toll stations
= Turns and exits
188Driving and parking