Get Driving -> Lane departure warning (Side Assist) with rear cross traffic alert (RCTA) and door opening warning (Exit Assist) Guide for Cupra Leon 4 Door First Generation (2020-2026)

Driver assistance systems

WARNING

●

There is a fault or defect. Turn the drive

system off and on again.

Lane departure warning

(Side Assist) with rear cross

traffic alert (RCTA) and

door opening warning (Exit

Assist)

If the Emergency Assist Intervenes inop-

portunely, serious accidents and injuries

may occur.

●

If the fault continues, disconnect the

Emergency Assist and consult a specialised

workshop.

●

If the vehicle behaves differently than ex-

pected, interrupt the intervention of the

Emergency Assist by over-accelerating,

braking or moving the steering wheel.

WARNING

The smart technology fitted into the Emer-

gency Assist cannot overcome the limits

imposed by the laws of physics; it only

works within the limits of the system. The

driver is responsible for driving the vehicle.

●

Introduction

Do not use Travel Assist or Lane Assist.

Have the system checked by a specialised

workshop.

The lane departure warning (LCA) helps

detect traffic that is at the rear of the vehi-

cle.

●

Adapt your speed and safety distance to

Note

the vehicle in front of you at all times to suit

the visibility, weather, road and traffic con-

ditions.

The rear cross traffic alert (RCTA) helps

the driver when backing out of a parallel

parking spot and when manoeuvring.

●

Automatic interventions by the Emergen-

cy Assist on the brakes may be interrupted

by pressing the accelerator or brake or by

moving the wheel.

●

The Emergency Assist cannot always

The door opening warning (EWA) alerts

the occupant of a possible danger ap-

proaching from behind when opening or

when any of the vehicle’s doors are open.

avoid accidents or serious injuries by itself.

●

Hazard warning lights that come on auto-

●

If possible, do not wear gloves while driv-

matically can be switched off by pressing

the accelerator or the break, moving the

steering wheel or pressing the hazard

warning light switch.

ing. The system could interpret this as no

driving activity.

●

If the radar sensor or the camera are cov-

WARNING

ered or have been altered or damaged, the

system may intervene on the brakes or on

the direction in an inappropriate manner.

●

If this occurs, the Emergency Assist may

The smart technology incorporated into

the lane departure warning (LCA) with rear

cross traffic alert (RCTA) and the door

opening warning included cannot over-

come the limits imposed by the laws of

physics; it only works within the limits of the

system. Accidents and severe injury may

occur if the lane departure warning or the

rear cross traffic alert are used negligently

decelerate the vehicle until it comes to a

complete stop.

●

The Emergency Assist does not react to

●

When the Emergency Assist is activated,

people or animal or vehicles crossing your

path or which approach you head-on in the

same lane.

it is only available again after the ignition

has been switched off and back on again.

»

257

Driving

Control lamp

or involuntarily. The system is not a re-

placement for driver awareness.

It lights up

It lights up continuously: the lane departure warning

has detected a vehicle in the blind spot.

●

Adapt your speed and safe distance to

the vehicle in front of you at all times to suit

visibility, weather, road and traffic condi-

tions.

Flashes

●

Keep your hands on the wheel at all times

A vehicle has been detected in the adjacent lane and

the turn signal has been engaged in the direction of

to be ready to intervene in the steering at

any time.

the detected vehicle

.

›››

●

Pay attention to the indicator lamps that

For vehicles that are also equipped with Lane Assist

may come on in the external rear view mir-

rors and on the instrument cluster, and fol-

low any instructions they may give.

page 251, a warning to switch lanes will also appear

even though the turn signal has not been engaged

›››

(Lane Assist “Plus” page 259 ).

Fig. 180 Control lamp of the lane depar-

ture warning.

›››

●

The lane departure warning could react

The control lamps light up when the ignition

is switched on and should turn off after ap-

proximately 2 seconds. This is the time taken

for the function check.

to any special constructions that might be

present to the sides of the vehicle, e.g. high

or irregular dividers. This may cause erro-

neous warnings.

●

Never use the lane departure warning on

If there are no indications from the control

lamp of the lane departure warning, this

means that the lane departure warning has

not detected any other vehicles at the rear

unpaved roads. The lane departure warning

has been designed for use on paved roads.

●

Always pay attention to the vehicle's sur-

area

.

roundings.

›››

●

The control lamps of the lane departure

When the exterior lighting is low, the intensi-

ty with which the control lamps come on is

dimmed. The user can modify the intensity

of the control lamps with up to 5 levels in the

infotainment system menu.

warning may have limited functionality due

to solar radiation.

Fig. 181 Control lamp of the lane depar-

ture warning.

Note

It lights up

If the lane departure warning with rear

cross traffic alert does not work as descri-

bed in this chapter, stop using it and con-

tact a specialised workshop.

WARNING

It turns on once briefly: the lane departure warning is

activated and ready to operate, i.e. when activating the

system.

If the warning lamps and the corresponding

messages are ignored when they light up,

258

Driver assistance systems

Light indication

Driving situations

the vehicle may stall in traffic and cause ac-

cidents and severe injuries.

The control lamp provides an indication on

the corresponding side regarding the traffic

situation behind the vehicle, if it is deemed

to be critical. The control lamp of the left-

●

Never ignore the warning lamps or mes-

sages.

●

Carry out the necessary operations.

CAUTION

hand side Fig. 180 indicates the traffic sit-

›››

uation to the rear left of the vehicle, and the

control lamp of the right-hand side

Fig. 181, indicates the traffic situation to

the rear right of the vehicle.

Failure to heed the control lamps and cor-

responding text messages when they light

up may result in damage to the vehicle.

›››

Keep the warning lamps zone of the lane de-

parture warning free of objects, adhesives or

the likes that may interfere with your visibility.

Lane departure warning (Side As-

sist)

Lane assist Plus.

The lane departure warning uses radar sen-

sors to monitor the areas behind the vehicle

The Lane Assist Plus function can be used by

activating the Lane Assist page 251 and

Side Assist functions. In this case its func-

tions are expanded as described below.

page 7. The system does this by measur-

›››

ing the vehicle's distance from other vehicles

and its speed differential. The lane departure

warning will not work at speeds of less than

approx. 15 km/h (9 mph).

Fig. 182 Schematic representation: 

Passing situation with traffic behind the ve-

hicle.  Indication of the lane departure

warning in the control lamp on the left

side.

If the driver initiates a lane change manoeu-

vre in a potential critical situation:

»

The lane width is not detected individually,

but is rather pre-configured in the system.

Thus if you are driving in wide lanes or in be-

tween two lanes, the indications may be in-

correct. Furthermore, the system can detect

vehicles driving in the lane next to you (if

there are any), and can also detect stationary

objects such as dividers, and thus give an in-

correct indication.

●

The lamp flashes in the corresponding

rear-view mirror even though the turn signal

has not been activated.

●

The steering wheel vibrates to warn the

driver of the risk of collision.

●

torque is applied to correct the steering

and return the vehicle to its lane.

259

Driving

considerably higher speed, no indication will

be displayed.

Rear cross traffic alert (RCTA)

The faster the vehicle approaches, the soon-

er an indication will be displayed in the con-

trol lamp, because the lane departure warn-

ing takes into account the speed differential

with other vehicles. Thus even though the

distance from the other vehicle is identical,

the indication will appear sooner in some ca-

ses and later in others.

Physical limitations inherent to the system

Fig. 184 Schematic representation of the

rear cross traffic alert assistant: zone moni-

tored around the vehicle while leaving a

parking space.

In some situations the lane departure warn-

ing may not interpret the traffic situation

correctly. I.e. in the following situations:

●

on tight bends;

Park Assist uses the radar sensors on the rear

bumper page 233 to monitor the traffic

›››

in the case of lanes with different widths;

in areas with significant gradient changes;

in adverse weather conditions;

Fig. 183 Schematic representation:  Sit-

uation of an overtaking in the centre lane

and then moving into the right-hand lane.

 Indication of the lane departure warning

in the control lamp on the right side.

crossing behind the vehicle as it backs out of

a parallel parking space or as it is being man-

oeuvred, for example in very low visibility

conditions.

in the case of special constructions to the

side of the vehicle, e.g., high or irregular di-

viders.

When the system detects a relevant vehicle

on the road that is approaching the rear of

In the following situations, an indication will

be displayed in the control lamp Fig. 182

›››

the vehicle Fig. 184 , an acoustic alarm

›››

 (arrow) or Fig. 183  (arrow):

›››

may sound if the relevance so requires it.

●

When being overtaken by another vehicle

Fig. 182 .

In addition to the acoustic alarm, the driver is

also informed by means of a visual signal on

infotainment system display. This signal is

displayed in the form of a red or yellow strip

at the back of the image of the vehicle on

the infotainment system screen. This strip

›››

●

When passing another vehicle Fig. 183

›››

 with a speed differential of approx.

10 km/h (6 mph). If the vehicle is passing at a

260

Driver assistance systems

WARNING

displays the side of the vehicle towards which

traffic is approaching in transverse direc-

Door opening warning (Exit As-

sist)

The smart technology incorporated into

the rear cross traffic alert cannot overcome

the limits imposed by the laws of physics; it

only works within the limits of the system.

The parking assistant function should not

tempt you into taking any risks. The system

is not a replacement for driver awareness.

tion¹⁾

.

Automatic braking to reduce damages

If the rear cross traffic alert detects that

someone else on the road is approaching

the rear of the vehicle and the driver does

not step on the brake, the system will engage

the brakes automatically.

●

The system should never be used in limi-

ted visibility conditions or complicated

traffic, e.g., in high-traffic areas or when

crossing multiple lanes.

The parking system helps the driver by auto-

matically engaging the brakes to reduce any

damage. The automatic intervention on the

brakes takes place when driving in reverse at

approx. 1-12 km/h (1-7 mph). After detecting

that the vehicle is stationary, the system

keeps it that way for around 2 seconds.

●

Be sure to always be aware of the vehi-

cle's surroundings, since the system often

fails to detect things such as bicycles or pe-

destrians.

Fig. 185 Graphic example

●

The rear cross traffic alert itself will not

brake the vehicle to a complete stop.

After automatically braking to reduce dam-

age, the system will not be able to automati-

cally brake again for approximately 10 sec-

onds.

You can interrupt the automatic braking by

stepping hard on the accelerator pedal or

the brake pedal in order to regain control of

the vehicle.

Fig. 186 Door: warning lamp

The door opening warning (Exit Assist) warns

occupants of a possible collision when

opening the door when the vehicle is

»

1)

It is only displayed if the vehicle is equipped

with a parking system.

261

Driving

stationary. The system monitors, within the

limits of the system itself, the rear and side

environment of the vehicle using the rear

Managing the assist systems

WARNING

●

Always pay close attention to the traffic

Enabling and disabling the assist systems

and the surroundings of the vehicle. The

door opening warning (Exit Assist) cannot

replace the necessary attention to be paid

by the vehicle’s occupants. The responsi-

bility for opening the doors and exiting the

vehicle always lies with the occupants of

the same.

sensors page 233 . It detects moving ob-

›››

Side Assist, Exit Assist and the Rear Cross

Traffic Alert (RCTA) can also be switched on

and off from the Assistants menu of the in-

fotainment system.

jects that approach from behind, such as

cars Fig. 185 .

›››

If a critical situation is detected when the

door is opened, it will be alerted by an

acoustic signal on the door speaker of the

Exit Assist and Rear Cross Traffic Alert (RCTA)

can also be found in the Park Assist Settings

menu.

●

corresponding side Fig. 186 . Additionally,

The door opening warning (Exit Assist)

›››

operates continuously as long as the vehi-

cle ignition is on. Otherwise, the system is

deactivated and the lamps light up briefly.

the control lamp of the lane departure warn-

ing of the corresponding door will flash. If

the door has already been opened and an-

other road user has been detected in a criti-

cal situation, the control lamp of the lane

departure warning on the corresponding

side will light up permanently.

Side Assist and the Rear Cross Traffic Alert

(RCTA) can also be switched off and on in the

instrument cluster Assistants menu

●

It is possible that the traffic situation is

page 73.

›››

not interpreted correctly and you cannot

be aware of all the objects that are ap-

proaching, such as pedestrians. Always vis-

ually monitor the traffic and the area sur-

rounding the vehicle.

Open the Assistants menu in the infotain-

ment system.

The brightness of the door opening warning

indication cannot be adjusted.

●

 Side Assist

 Door opening warning

 Rear cross traffic alert

When you want to access the vehicle for the

first time, with the doors closed and locked,

the function will be available 3 minutes after

the first opening of any of the doors. The

function will continue to be available as long

as the vehicle has the ignition connected

and is not moving.

WARNING

The door opening warning (Exit Assist) is

subject to system limits and cannot warn of

an imminent collision in all cases:

Open the Park Assist > Settings menu in the

infotainment system.

●

 Door opening warning

 Rear cross traffic alert

●

If your vehicle is too deep in the parking

space and the adjacent vehicles hide it.

●

In certain circumstances, objects or peo-

After switching off the ignition, the function

will remain available for approximately 3 mi-

nutes. After that time, the control lamps will

light up indicating the deactivation of the

function.

Open the Assistants menu on the instru-

ment cluster

ple who approach, e.g. on a bicycle or

scooter, are not detected.

●

 Side Assist

●

The system does not react to stopped ob-

jects.

●

 Rear cross traffic alert

262

Driving -> Lane departure warning (Side Assist) with rear cross traffic alert (RCTA) and door opening warning (Exit Assist) for Your Cupra Leon 4 Door First Generation (2020-2026)

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