2013 Seat Leon 5D technical specifications

195
Driver assistance systems
WARNING (Continued)
● “Stepping” on the accelerator may lead the ACC not to intervene to
brake. Acceleration by the driver takes priority over action by the active
cruise control.
● Always be prepared to use the brakes to halt the vehicle!
● Observe the provisions of the country in question regarding the mini-
mum obligatory distance between vehicles.
Note
● The stored speed is erased when the ignition or the ACC are switched
off.
● When the traction control system (ASR) is switched off or the ESC is acti-
vated in Sport* (⇒ page 79) mode, the ACC is switched off automatically.
● In vehicles with Start-Stop system, the engine switches off automatically
during the ACC halt phase and restarts automatically to begin driving. 
Vehicles with an automatic gearbox
If the vehicle is equipped with automatic gearbox, the Adaptive Cruise Con-
trol (ACC) may brake it until it stops completely if the vehicle ahead stops.
The ACC will be available for a few seconds. The vehicle will restart autono-
mously if the vehicle ahead moves (assistant in line of traffic).
Disconnection criteria
The ACC will switch off if the driver steps on the brake pedal or the driver
door is opened. If the vehicle ahead stops for more than 3 seconds, the ACC will also switch
off for safety reasons.
In this case the driver should take over and apply the
foot brake.
In the latter case, when the ACC is switched off with the vehicle stationary,
the vehicle must be stopped by applying the foot brake; since the car, with
a gear engaged, even at idle speed, might move.
Restart the ACC manually.
The ACC can be switched on again by turning the lever to position 2
⇒ Fig. 134.
WARNING
Your vehicle can start up even if there is an obstacle between your own
and the one ahead. Risk of accident!
CAUTION
● If your vehicle with adaptive cruise control failed to start as expected,
even if the ACC available 1)
message is shown to the driver, you can start off
by briefly stepping on the accelerator.
● The Start-Stop system acts as usual when driving with adaptive cruise
control. 
1)
Not available for the versions of some countries.
Safety FirstOperating instructionsPractical TipsTechnical specifications

197
Driver assistance systems
Message texts
 ACC not available
The system cannot continue to guarantee safe vehicle detection so it is
switched off. The sensor has lost its setting or is damaged. Take the vehicle
to a specialised workshop to have the fault repaired.
 ACC: not available at the moment. Sensor without visibility
 ACC and Front Assist: not available at the moment. Sensor without
visibility
This message for the driver is displayed if the visibility of the radar's sensor
is impaired, e.g., by leaves, snow, heavy mist or dirt. Clean the sensor.
 ACC: not available at the moment. Gradient too steep
The maximum slope has been exceeded, hence it cannot be guaranteed
that the adaptive cruise control will operate safely. The adaptive cruise con-
trol cannot be activated
 ACC: only available in D, S or M
Select the position of the selector lever D/S or M.
 ACC: parking brake applied
The adaptive cruise control is deactivated if the parking brake is applied.
The adaptive cruise control is available again if the parking brake is re-
leased.
 ACC: not available at the moment. Stabilisation control intervention
The message for the driver is shown when the electronic stabilisation con-
trol (ESC) intervenes. In this case, the adaptive cruise control will automati-
cally be switched off.
 ACC: Intervene!
The message for the driver is shown if, when you start up on a gentle slope,
the vehicle moves backwards even although the ACC is switched on. Step on the brake pedal to prevent the vehicle from moving/crashing into anoth-
er vehicle.

ACC: speed limit
The message for the driver is shown in vehicles with manual gearbox if the
current speed is too low for ACC mode.
The speed you wish to store must be at least 30 km/h. The cruise control
system switches off if the speed falls below 20 km/h.
 ACC: available as of the 2nd gear
The adaptive cruise control is operational as of the 2nd gear (manual gear-
box).
 ACC: engine speed
The message for the driver is shown if, when the adaptive cruise control ac-
celerates or brakes, the driver does not go up or down a gear in time, which
would mean either exceeding or not reaching the admissible rpm. The adap-
tive cruise control will then be switched off. A warning buzzer goes off.
 ACC: clutch pressed down
Vehicles with a manual gearbox: press the clutch pedal for longer to exit
control.
  
Three white dots appear if a setting made with the control lever cannot be
executed. For example, the adaptive cruise control cannot be switched on in
a stationary vehicle when the driver's seatbelt is not fastened.
Door open
Vehicles with automatic gearbox: the adaptive cruise control cannot be
switched on in a stationary vehicle with the door open. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

199
Driver assistance systems
Special driving situations
Fig. 136 (A) Vehicle on a
bend. (B) Motorcyclist
driving ahead out of
range of the radar sensor.
Fig. 137 (C) Other vehi-
cle changing lanes (D)
Vehicle turning and an-
other one stopped.
The Adaptive Cruise Control (ACC) has certain physical limitations inherent
in the system. For example, some of the ACC's reactions, in certain circum-
stances, may be unexpected or occur at the wrong time as far as the driver
is concerned. Therefore, be on the lookout in case you have to intervene.
For example, the following traffic situations call for the utmost attention:
Deceleration until the vehicle comes to a halt (only vehicles with automatic
gearbox)
If the vehicle in front reduces speed and stops, the ACC will do the same
with your own vehicle. After the vehicle has been stopped for approx. 3 sec-
onds, the system will warn the driver that he has to take control by means of
an acoustic and visual warning on the instrument panel.
Starting up after a halt phase (only vehicles with automatic gearbox)
After a halt phase, the ACC can start driving automatically as soon as the
vehicle ahead begins to move again. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

201
Driver assistance systems
Overheated brakes
If the brakes overheat, for example, after a sharp brake or in long and very
steep descents, the ACC may switch off temporarily. The relevant message
appears on the instrument panel display. In such cases, the cruise control
might not be switched on.
Once the brake temperature has come down sufficiently, the active cruise
control can be switched on again. The message will disappear from the in-
strument panel display. If the ACC not available message remains on for
quite some time, it means there is a fault. Visit a specialised workshop,
SEAT recommends a SEAT dealer.
WARNING
If the message ACC ready to start is shown on the instrument panel dis-
play and the vehicle ahead starts up, the vehicle will start automatically.
In this case, the radar sensor may not detect possible objects on the
road. This could cause an accident and serious injury.
● Before moving off, check that the road is clear. If necessary, apply the
foot brake.

Safety FirstOperating instructionsPractical TipsTechnical specifications

203
Driver assistance systems
WARNING (Continued)
● In complex driving conditions, the Front Assist may unnecessarily
warn and act unintentionally on the brakes, such as, for example, in the
case of traffic islands.
● If the operation of the Front Assist is impaired, for example, because
of dirt or because the radar sensor has lost its setting, the system may
issue unnecessary warnings and act inappropriately on the brakes.
● The ACC does not react during driving to people or animals or vehi-
cles changing lane or approaching in the opposite direction in the same
lane.
● The driver must always be ready to take control of the vehicle again.
Note
● When the Front Assist causes a braking, the brake pedal is “harder”.
● Automatic interventions in the Front Assist braking may be interrupted
by pressing the clutch pedal, accelerator or moving the steering wheel.
● If the Front Assist does not work as described in this chapter (e.g. if it
intervenes several times unnecessarily), switch it off. Have the system
checked by a specialised workshop. SEAT recommends visiting a SEAT deal-
ership. Warning lamps and messages on the display
Fig. 138 On the instrument panel display: Warning messages
Lights upPossible cause ⇒ Solution

Collision warning
a)
. The sys-
tem detects a possible colli-
sion with the vehicle in
front.Brake or change course! Use
the foot brake!
Safety distance warning
with the vehicle in front.Increase the safety dis-
tance!
a) The symbol is in colour on the instrument panel with colour display.
Distance warning
If the safety distance with the vehicle ahead is exceeded, the instrument
panel display shows the following warning ⇒ Fig. 138 
(magnified image).
Increase the distance! 
Safety FirstOperating instructionsPractical TipsTechnical specifications

205
Driver assistance systems
● A radar sensor repair requires specialist knowledge and special tools.
SEAT recommends visiting a SEAT dealership for this.
● Snow should be removed with a brush, while ice should be removed
with a solvent-free anti-ice aerosol. 
Handling the Front Assist Monitoring system
The Front Assist Monitoring system is activated whenever the ignition is
switched on.
When the Front Assist is switched off, so are the pre-warning function and
distance warning.
SEAT recommends that the Front Assist always be activated. Exceptions
⇒  page 205, Temporarily switching off the Front Assist Monitoring System
in the following situations.
Switching the Front Assist warning system on and off
With the ignition on, the Front Assist can be switched on and off as follows:
● Select the corresponding menu option using the button for the driver as-
sist systems ⇒ page 75.
● OR: switch the Easy Connect system on or off using the button 
and
the function buttons  and Driver Assist ⇒ page 80
Switching the pre-warning function on or off
The pre-warning function can be switched on or off on the Easy Connect sys-
tem using the button 
and the function buttons  and Driver Assist⇒ 
page 80.
The system maintains the setting the next time the ignition is switched on.
SEAT recommends that the pre-warning function always be switched on. Switching distance warning on or off
If the safety distance with the vehicle ahead is exceeded, the instrument
panel display shows the relevant warning. In such an eventuality, increase
the safety distance
⇒ table on page 203.
The distance warning can be switched on or off on the Easy Connect system
using the button 
and the function buttons  and Driver Assist⇒ page 80.
The system maintains the setting the next time the ignition is switched on.
SEAT recommends that the distance warning always be switched on. 
Temporarily switching off the Front Assist Monitoring
System in the following situations
The Front Assist Monitoring System should be switched off in the following
situations due to the system's limitations ⇒ :
● When the vehicle is being towed.
● When the vehicle is on a roller test bed.
● When the radar sensor is damaged.
● If the radar sensor takes a big knock, for example, in a rear-end colli-
sion.
● If it intervenes several times unnecessarily.
● If the radar sensor is covered temporarily by an accessory such as an ad-
ditional headlight or the like.
● When the vehicle is to be loaded on a lorry, a ferry or train. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

207
Driver assistance systems
If the driver does not react to a collision hazard, the system can automati-
cally brake the vehicle by progressively increasing braking pressure to re-
duce speed in the event of a collision. The system can thus help to reduce
the consequences of an accident.
Status display
Automatic deceleration by the City emergency braking function is shown on
the instrument panel display by means of a pre-warning message
⇒ Fig. 140 1)
.
WARNING
The smart technology included in the City emergency braking function
cannot defy the laws of physics. The driver is always responsible for
braking in time.
● Always adapt speed and safety distance to the vehicle ahead accord-
ing to visibility, weather, road and traffic conditions.
● The City emergency braking function alone cannot prevent accidents
or serious injury.
● In complex driving conditions, the City emergency braking function
may act on the brakes, for example, in areas with road works or metal
rails.
● If the City emergency braking function is impaired, for example, be-
cause of dirt or because the radar sensor has lost its setting, the system
may issue unnecessary warnings and act inappropriately on the brakes.
● The City emergency braking function does not react during driving to
people or animals or vehicles changing lane or approaching in the oppo-
site direction in the same lane.
Note
● When the City emergency braking function causes a braking, the brake
pedal is “harder”.
● Automatic interventions in the City emergency braking function may be
interrupted by pressing the clutch pedal, accelerator or moving the steering
wheel.
● The City emergency braking function can decelerate the vehicle and
bring it to a standstill. However, the brake system does not halt the vehicle
permanently. Use the foot brake!
● If several inappropriate interventions take place, disconnect the Front
Assist and with it the City emergency braking function. Visit a specialised
workshop, SEAT recommends a SEAT dealer.
● If numerous unfounded interventions occur the City emergency braking
function may disconnect automatically 
Lane Assist system* Introduction
Additional information and warnings:
● SEAT information system ⇒  page 73
● Accessories, parts replacement, repairs and modifications ⇒ page 272 
1)
The symbol is in colour on the instrument panel with colour display.
Safety FirstOperating instructionsPractical TipsTechnical specifications

209
Driver assistance systems
Indication on the display and warning lamps
Fig. 141 On the instrument panel display: Indication on the Lane Assist system dis-
play (example 1)
Fig. 142 On the instrument panel display: Indication on the Lane Assist system dis-
play (example 2) Indications on the display
The system is active, but not available, either because the minimum
speed has not been reached or because the lane lines are not recog-
nised ⇒ Fig. 141 .
The system is active and available, both lane lines are recognised. The
steering angle is not being corrected at this moment ⇒ Fig. 141 .
The system is operational, a highlighted line A
indicates that there
was a risk of involuntarily crossing the lane line and that the steering is
being adjusted to correct the angle ⇒ Fig. 142 .
The two highlighted lines A
light up simultaneously when both lane
lines are recognised and the Lane Assist function is active ⇒ Fig. 142
.
Control lamps
flashes or
lights upPossible causeSolution

(yellow)Lane Assist active but
not available.The system can not accurately recog-
nise the lane. Please see page 210,
The Lane Assist system is not availa-
ble (the control lamp is lit up yellow).

(green)Lane Assist system ac-
tive and available._
WARNING
If the warning lamps and messages are ignored, the vehicle may stall in
traffic, or may cause accidents and severe injuries.
● Never ignore the warning lamps or text messages.
● Stop the vehicle safely as soon as possible. 
–
–
–
–
Safety FirstOperating instructionsPractical TipsTechnical specifications