Get Driving -> ACC - Adaptive Cruise Control Guide for Seat Leon 4 Door Fourth Generation (2021-2026)

Driver assistance systems

●

Switching the Front Assist on and off

Medium

Deactivating Front Assist temporarily in

the following situations

Delayed

With the ignition switched on, the Front Assist

can be deactivated or activated as follows:

In the following situations the Front Assist

should be deactivated due to the system's

limitations:

Deactivated

●

Select the corresponding menu option us-

ing the button for the driver assistance sys-

tems page 86.

SEAT recommends driving with the function in

“Medium” mode.

›››

●

When the vehicle is to be towed.

If the vehicle is on a test bed.

●

OR: using the Infotainment system: press

the function button  > Assistants > Smart

Switching distance warning on and off

If the radar sensor or the front camera are

The safety distance warning can be activa-

ted or deactivated in the infotainment system

using the function button  > Assistants >

Assistants > Front Assist page 93.

›››

faulty.

When the Front Assist is deactivated, the indi-

●

If the radar sensor or the front camera have

suffered a violent blow.

cation Fig. 179 will be displayed on the in-

Smart Assistants > Front Assist page 93.

›››

strument panel.

The system will store the setting for the next

time the ignition is switched on.

●

If it intervenes several times unnecessarily.

Each time the ignition is switched on, the

Front Assist will reappear as active.

If the radar sensor or the front camera are

temporarily covered by an accessory.

SEAT recommends having the safety dis-

tance warning activated except in the excep-

●

When the vehicle is going to be loaded onto

transportation.

Activating or deactivating the pre-warning

(advance warning)

tions described in section page 249.

›››

●

If the windscreen is damaged in an area

The advance warning can be activated or

deactivated in the infotainment system using

the function button  > Assistants > Smart

Activate or deactivate the dodge and turn

assistant

that covers the vision of the front camera.

The dodge and turn assistance systems can

be activated or deactivated in the infotain-

ment system using the function button  >

Assistants > Smart Assistants > Front Assist

Assistants > Front Assist page 93.

›››

ACC - Adaptive Cruise Con-

trol

The system will store the setting for the next

time the ignition is switched on.

page 93.

›››

SEAT recommends keeping advance warning

active.

The system will store the setting for the next

time the ignition is switched on.

Introduction

Depending on the vehicle’s infotainment sys-

tem the advance warning function may be

adapted in the following modes:

Adaptive Cruise Control (ACC) maintains

a constant speed set by the driver. When

approaching another vehicle in front, the

ACC detects it and adapts the speed

SEAT recommends having the dodge and

turn assistance systems activated except in

the exceptions described in section

»

●

Advance

page 249.

›››

249

Driving

automatically, maintaining a distance set

by the driver.

Radar sensors

soon enough to avoid a hazardous situa-

tion.

The ACC uses the front radar technology.

Read its maintenance instructions and infor-

mation about its limitations page 238.

●

The system may not react to stopped ve-

Does my vehicle have ACC?

›››

hicles in the same lane. You must react ear-

ly enough yourself in this case.

Your vehicle has ACC if it has a configuration

WARNING

menu in the infotainment system page 93

›››

●

The system does not react to people, ani-

and if it has the ACC function buttons on the

mals or vehicles that are crossing or ap-

proaching in the opposite direction.

The ACC’s technology cannot overcome

the system's inherent limitations or change

the laws of physics. If used negligently or

involuntarily, it may cause serious acci-

dents and injuries. The system is not a re-

placement for driver awareness.

multifunction steering wheel Fig. 180.

›››

●

If you are driving with a spare wheel fit-

Speed range

ted, the ACC system could automatically

switch off. Switch off the system when

starting off.

ACC regulates speeds between 30 km/h (20

mph) and 210 km/h (130 mph).¹⁾

●

Always be prepared to brake or acceler-

●

Brake immediately if the ACC does not

The ACC can brake vehicle until it stops com-

pletely before a vehicle that stops. If your ve-

hicle is fitted with a manual gearbox, you

should pay attention to gear changes. The

ACC could switch off if the RPM gets too high

or low.

ate.

slow down enough.

●

If you press the accelerator pedal the

●

Brake immediately when a driver inter-

ACC will stop working. Therefore, it will not

brake or request any braking intervention.

vention instruction is displayed on the in-

strument cluster screen.

●

Adapt your speed and safe distance to

●

If the vehicle continues to move involun-

the vehicle in front of you at all times to suit

visibility, weather, road and traffic condi-

tions.

tarily after a driver intervention prompt,

brake the vehicle.

Driver intervention prompt

●

The brake pedal may move downwards

ACC is subject to certain limitations in-



●

Do not use the ACC in poor visibility, or

during braking. Be careful not to position

your foot under the pedal.

herent to the system. This means that

on roads that are steep, with lots of curves

or slippery.

the driver will have to control the speed

and distance from other vehicles in cer-

tain situations. In this case, the instru-

ment cluster display will tell you to in-

tervene by applying the brake, and an

audio warning will be played.

●

Never use ACC when driving off-road or

Note

on unpaved roads.

If the ACC does not work as described in

this chapter, do not use it until it has been

checked by a specialised workshop. Visit-

ing a SEAT dealership is recommended.

●

The system may not react in time to sta-

tionary obstacles (such as a traffic jam

queue), particularly at high speeds. React

1)

When E-Mode is activated in hybrid vehicles,

the ACC speed range may vary.

250

Driver assistance systems

●

Alternatively, press the button  as many

ACC operation

It lights up green



The ACC is active^a)

times as necessary to set the desired dis-

tance.

.

a)

Only on analogue instrument clusters.

Keep in mind each country’s regulations on

minimum braking distances.

It lights up green



Suspend regulation (standby)

ACC connected, no vehicle detected in front.

●

Briefly press the button  on the multifunc-

tion steering wheel or press the brake pedal.

It lights up green



The ACC indicator lamp is grey; the speed

and distance are saved.

ACC connected, vehicle detected in front.

Fig. 180 On the multifunction steering wheel:

buttons to operate the ACC

When the ACC is in standby, the indicator

lamps light up in grey.

If the ESC TCS page 277 is disconnected,

›››

the ACC is automatically suspended.

Connecting

Setting speed

Reinstating the cruise control

●

Press the  button on the multifunction

To program the speed, press the  or 

steering wheel.

●

Press the  button.

Fig. 180 buttons to the desired speed. The

›››

speed is adjusted at intervals of 10 km/h (5

mph).

The ACC does not regulate anything yet

(standby).

The ACC regulates to the last speed and dis-

tance setting.

When the ACC is active, the button  can be

pressed to increase the desired speed by 1

km/h (1 mph). You can then press  to de-

crease it by 1 km/h (1 mph).

Start regulation

Switching off

●

To start regulation, press the button 

Fig. 180.

●

Press and hold the button . The set speed

›››

is cleared.

The ACC sets the current speed, or the clos-

est speed within the valid range (30-210

km/h), as the cruise speed.

Setting your distance level

Exceeding the speed regulated by the

ACC

The distance can be set to one of five levels,

from very short to very long:

While driving with the ACC switched on, the

driver can increase speed by pressing the

accelerator pedal. ACC regulation is suspen-

ded until you release the accelerator pedal

Depending on the driving situation, the fol-

lowing indicator lamps come on:

●

Press the button  and then the button  or

Fig. 180.



›››

»

.

›››

251

Driving

Set the default distance setting

This information can be displayed on the

central panel of the Assists view, or in the left

CAUTION

In the Infotainment system, you can pre-se-

lect the distance level when connecting the

ACC from:

If you increase speed using the accelerator

pedal, the ACC may not be able to safely

adjust the speed of the distance due to the

limitations of the system.

hand information profile page 68. If these

›››

views are not selected, it will be automatical-

ly displayed in the lower central part of the

instrument cluster in a simplified manner.

●

Very short, Short, Medium, Long and Very

●

Be prepared to react if required by the

situation.

long using the Infotainment system:  > As-

sistants > Smart Assistants > ACC

The set speed will be displayed next to the

function status indicator described in

page 93.

›››

page 251, Start regulation.

›››

Status display

Changing the driving profile

In vehicles with SEAT Drive Profile, the driving

profile selected can have an influence on the

ACC’s acceleration and braking behaviour

Special driving situations

page 234.

›››

In vehicles without SEAT Drive Profile, the be-

haviour of the ACC can also be affected if

any of the following drive profiles are selec-

ted in the infotainment system in Drive assist.

ACC settings will be the same as those in the

SEAT Drive Profile.

Fig. 181 On the instrument panel display: ACC

active.

WARNING

Fig. 182 On the instrument panel display: ACC

active, vehicle detected in an outer lane.

Before driving off, check that the road is

clear. The radar sensor may not detect ob-

stacles on the road. This could cause an

accident and serious injuries. If necessary,

apply the brake.

1

Vehicle ahead detected. It will light up if

the distance to the vehicle is adjusted.

Be aware of the limitations and warnings de-

2

Selected distance level 2.

scribed at the beginning of this chapter.

›››

in Introduction on page 250.

252

Driver assistance systems

Avoid undertaking on the right¹⁾

clutch pedal depressed to allow the car to

come to a complete stop.

WARNING

If a vehicle is detected in the left lane that is

travelling at a speed slower than that set by

the driver, it will brake the vehicle within the

comfort limits of the system to avoid passing

If the message ACC ready to start is dis-

played on the instrument cluster display

and the vehicle in front moves off, your ve-

hicle will move off automatically. In this

case, any obstacles in the road may not be

detected. This may cause serious acci-

dents and injuries.

The ACC remains active and the message

ACC ready to start is displayed on the in-

strument cluster for a few seconds. You can

extend or reactivate this warning by pressing

the button  or, depending on your vehicle’s

equipment, by grabbing the steering wheel.

During this time, the vehicle will move off

again if the vehicle in front moves forwards.

it on the right Fig. 182.

›››

You can cancel this regulation by changing

the set speed or by pressing the accelerator

pedal.

●

Always check the road before moving off,

and apply the vehicle brakes yourself if

necessary.

The function works at speeds over 80 km/h

(50 mph). It may not be available in certain

countries.

To move off when the message ACC ready

to start is not longer displayed, once the

vehicle in front has moved off:

Overtaking

●

Briefly depress the accelerator pedal (and

gently lift the clutch pedal on vehicles with

manual gearboxes).

When the turn signal is switched on for over-

taking, the ACC reduces the distance from

the vehicle in front to help with the overtaking

manoeuvre. The set cruising speed will not be

exceeded.

●

OR: press the button  or  on the multi-

function steering wheel (only in vehicles with

automatic gearboxes).

The function works at speeds over 80 km/h

(50 mph). It may not be available in certain

countries.

The ACC is deactivated while stopped in the

following cases:

●

If the vehicle stops for several minutes.

If a door is opened.

Stop&Go function

The ACC can bring the vehicle to a standstill

(0 km/h) if the vehicle in front stops. With

manual gearboxes you will need to keep the

1)

Or on the left, in countries that drive on the left

hand side of the road.

253

Driving

●

On roads with embedded metal objects

such as train or tram tracks.

ACC system limitations

●

On roads with loose gravel.

Pay special attention when using ACC in the

following situations:

On curves

The ACC may not detect the vehicle in front

on a curve, or may regulate the distance from

vehicles in other lanes Fig. 183 .

›››

Vehicles outside the sensor zone

In the following situations the ACC may not

react, or may react slowly or inappropriately:

Fig. 184  Vehicle changing lanes.  One ve-

hicle turning and another stationary.

●

Vehicles that are not aligned while driving

or that are outside the sensor's detection

area, such as motorcycles Fig. 183 

Fig. 183  Vehicle on a bend.  Motorcyclist

ahead, out of range of the radar sensor.

The limits of the ACC system mean that it is

›››

not appropriate in all situations

in Intro-

›››

duction on page 250.

●

Vehicles that move into your lane, a short

distance from your vehicle Fig. 184 .

›››

SEAT does not recommend using the function

●

in the following cases

:

Vehicles with loads or accessories that pro-

›››

trude from the sides, rear or roof.

●

Heavy rain, snow or fog.

When going through tunnels.

In sections with roadworks.

Objects that are not detected

The ACC function only detects and reacts to

vehicles moving in the same direction. There-

fore it does not detect:

On routes with curves, e.g. on mountain

roads.

●

On off-road routes.

In covered car parks.

●

People

Animals

254

Driving -> ACC - Adaptive Cruise Control for Your Seat Leon 4 Door Fourth Generation (2021-2026)

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