speed Seat Leon 5D 2012 Workshop Manual

171
Driver assistance systems
Switching the Lane Assist system on or off
● The Assistants menu ⇒ page 77 drops down in the instrument panel by
pressing the Assistants button on the turn signal lever or by operating the
menu in the multifunction steering wheel.
● OR: by pressing the OK
button on the steering wheel the
⇒ page 77
function is activated/deactivated.
● The Lane centring guide is activated/deactivated in the Easy Connect
system using the CAR
button and the button on the Setup function
⇒ page 79.
Self-deactivation: The Lane Assist system can be automatically deactivated
if there is a system malfunction. The control lamp disappears.
Hands-Off Function
● If the driver does not exert any physical action on the steering wheel for
about 10 to 12 sec. the function deactivates.
● Visual and audible warnings on the instrument panel.
● The function switches off 2 seconds after the warning.
The Lane Assist system is active but it is not available (the control lamp is
lit up yellow)
● When driving at speeds below 65 km/h (38 mph).
● When the Lane Assist system does not detect the dividing lines of the
road. For example, in the event warnings indicating road works, and snow,
dirt, moisture or reflections.
● When the radius of a curve is too small.
● When no road markings can be seen.
● When the distance to the next marking to too great.
● When the system does not detect any clear and active steering move-
ment during a long period of time.
● Temporarily, in the event of very dynamic driving styles.
● If a turn signal is activated.
● With the stability control system ESC in Sport mode.
Note
● Before starting a journey, verify that the field of vision of the camera is
not covered ⇒ Fig. 99.
● Always keep the field of vision of the camera clean. 
Switching off the Lane Assist system in the following
situations
Due to the limits of the Lane Assist system, switch it off in the following sit-
uations:
● When more attention is required of the driver
● When driving in a sporty style
● In unfavourable weather conditions
● On roads in poor condition
● In areas of road works
Note
The Lane Assist system deactivates when driving below 60 km/h (40 mph). 
SEAT Drive Modes* Introduction
SEAT Drive Mode enables the driver to choose between four profiles or
modes, normal, sport, eco and individual , that modify the behaviour of vari-
ous vehicle functions, providing different driving experiences. 
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172Driver assistance systems
The profiles, normal, sport and eco are fixed. Individual can be configured
according to personal preferences. 
Description
Depending on the equipment fitted in the vehicle, SEAT Drive Mode can op-
erate on the following functions:
Engine
Depending on the profile selected, the engine responds more spontaneous-
ly or more in harmony with the movements of the accelerator. Additionally,
when eco mode is selected, the Start-stop function is automatically activa-
ted.
In vehicles with DQ transmission, the gear change points are modified to
position them in lower engine speed ranges ( eco) or higher (sport). Addi-
tionally, eco mode activates the Inertia function, enabling the consumption
to be further reduced.
In manual vehicles, eco mode causes the gear recommendation indications
that appear on the instrument panel to vary, facilitating more efficient driv-
ing.
Steering
Power steering becomes more robust in sport mode to enable a more sporty
driving style.
Air conditioning
In vehicles with Climatronic, this can operate in eco mode, especially re-
stricting fuel consumption.
Ambient lighting
The ambient lighting guides located in the interior front door panels of the
Leon FR change colour from white to red when sport mode is activated. Setting driving mode
You can select from Normal, Sport, Eco and Individual.
Fig. 100 Centre console:
MODE button
The required mode can be selected on the touch screen, in the menu that
opens when the MODE button is pressed.
An icon on the Easy Connect system display informs about the active mode.
The MODE button light remains lit up yellow when the active mode is differ- ent to normal.
Driving pro-
fileCharacteristics
NormalOffers a balanced driving experience, suitable for everyday
use.
SportProvides a complete dynamic performance in the vehicle, en-
abling the user a more sporty driving style. 

173
Driver assistance systems
Driving pro-
fileCharacteristics
EcoPlaces the vehicle in a particularly low state of consumption,
facilitating a fuel-saving driving style that is respectful to the
environment.
IndividualEnables some configurations to be modified by pressing the
Profile settings button. The functions that can be adjusted
depend on the equipment fitted in the vehicle.
WARNING
When operating SEAT Drive Mode, pay attention to all traffic. Doing oth-
erwise could cause an accident.
Note
● The vehicle will start in the mode that was selected at the moment it was
switched off.
● Changing modes can alter vehicle handling. The SEAT Drive Mode func-
tion does not allow configurations that compromise safety under any cir-
cumstances.
● Your speed and driving style must always be adjusted to visibility,
weather, and traffic conditions.
● The eco mode is not available when towing a trailer. Tiredness detection (break
recommendation)*
Introduction
The Tiredness detection informs the driver when their driving behaviour
shows signs of fatigue.
Additional information and warnings:
● Easy Connect system ⇒ page 79
● Accessories, change a part, repairs and adjustments (information stored
in the control units) ⇒ page 230
WARNING
Do not let the comfort afforded by the Tiredness detection system tempt
you into taking any risks when driving. Take regular breaks, sufficient in
length when making long journeys.
● The driver always assumes the responsibility of driving to their full
capacity.
● Never drive if you are tired.
● The system does not detect the tiredness of the driver in all circum-
stances. Consult the information in the section ⇒ page 174, System limi-
tations.
● In some situations the system may incorrectly interpret an intended
driving manoeuvre as driver tiredness.
● No warning is given in the event of the effect called microsleep!
● Please observe the indications on the instrument panel and act as is
necessary. 
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174Driver assistance systems
Note
● Tiredness detection has been developed for driving on motorways and
well paved roads only.
● If there is a fault in the system, have it checked by a specialised work-
shop. 
Function and operation
Fig. 101 On the instru-
ment panel display:
Tiredness detection sym-
bol
Tiredness detection determines the driving behaviour of the driver when
starting a journey, making a calculation of tiredness. This is constantly com-
pared with the current driving behaviour. If the system detects that the driv-
er is tired, an audible warning is given with a sound and an optic warning is
shown with a symbol and complementary message on the instrument panel
display ⇒ Fig. 101. The message on the instrument panel display is shown
for about 5 seconds, and depending on the case, is repeated. The system
stores the last message displayed.
The message on the instrument panel display can be switched off by press-
ing the 
button on the windscreen wiper lever or the button  on the
multi function steering wheel ⇒ page 73. The message can be recalled to the instrument panel display using the mul-
tifunction display
⇒ page 73.
Conditions of operation
Driving behaviour is only calculated on speeds above about 65 km/h (40
mph) up to around 200 km/h (125 mph).
Switching on and off
Tiredness detection can be activated or deactivated in the Easy Connect
system with the button 
and the function button  ⇒ 
page 79. A mark
indicates that the adjustment has been activated.
System limitations
The Tiredness detection has certain limitations inherent to the system. The
following conditions can limit the Tiredness detection or prevent it from
functioning.
● At speeds below 65 km/h (40 mph)
● At speeds above 200 km/h (125 mph)
● When cornering
● On roads in poor condition
● In unfavourable weather conditions
● When a sporty driving style is employed
● In the event of a serious distraction to the driver
Tiredness detection will be restored when the vehicle is stopped for more
than 15 minutes, when the ignition is switched off or when the driver has
unbuckled their seat belt and opened the door.
In the event of slow driving during a long period of time (below 65 km/h (40
mph) the system automatically re-establishes the tiredness calculation.
When driving at a faster speed the driving behaviour will be recalculated. 

175
Driver assistance systems
Tyre monitoring systems Introduction
Additional information and warnings:
● SEAT information system ⇒  page 73
● Caring for and cleaning the vehicle exterior ⇒ page 198
● Wheels and tyres ⇒ page 223
● Accessories, parts replacement, repairs and modifications ⇒ page 230
WARNING
Unsuitable handling of the wheels and tyres may lead to sudden tyre
pressure losses, to tread separation or even to a blow-out.
● Check tyre pressures regularly and ensure they are maintained at the
pressures indicated. Tyre pressure that is too low could cause overheat-
ing, resulting in tread detachment or even burst tyres.
● Tyre pressure should be that indicated on the label when the tyres are
cold at all times ⇒ page 266.
● Regularly check the cold inflation pressure of the tyres. If necessary,
change the tyre pressure of the vehicle tyres while they are cold.
● Regularly check your tyres for damage and wear.
● Never exceed the maximum permitted speed or loads specified for the
type of tyre fitted on your vehicle.
For the sake of the environment
Under-inflated tyres lead to increased fuel consumption and tyre wear.
Note
● Driving for the first time with new tyres at a high speed can cause them
to slightly expand, which could then produce an air pressure warning.
● Only replace used tyres with those authorised by SEAT for the corre-
sponding type vehicle.
● Do not only rely on the tyre monitoring system. Regularly check your
tyres to ensure that the tyre pressure is correct and that the tyres are not
damaged due to puncture, cuts, tears and impacts/dents. Remove objects
from the tyres only when they have not pierced the tyres. 
Tyre monitor indicator warning lamp
lights upPossible causeSolution

The pressure in one or more
tyres has clearly reduced in
comparison to the tyre pres-
sure set by the driver or the
tyre has structural damage.
Additionally, an audible
warning can be heard and a
text message can be seen on
the instrument panel display. Stop the vehicle! Reduce
speed immediately! Stop the
vehicle safely as soon as
possible. Avoid sudden ma-
noeuvres and braking! Check
all tyres and pressures. Re-
place any damaged tyres.
flashesPossible causeSolution

System malfunction. The
control lamp flashes for
about one minute and then
lights up permanently.
If the tyre pressure is correct,
switch the ignition off and on
again. If the control lamp re-
mains lit up, the tyre monitor-
ing indicator can be calibra-
ted. Have the system re-
viewed by a specialised
workshop. 
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176Driver assistance systems
Several warning and control lamps light up for a few seconds when the igni-
tion is switched on while the function is verified. They will switch off after a
few seconds.
WARNING
When the tyres are inflated at different pressures or at a pressure that is
too low then a tyre may the damaged resulting in a loss of control of the
vehicle and a serious or fatal accident.
● If the warning lamp  lights up, stop immediately and check the
tyres.
● If the tyres are inflated at different pressures or if a tyre pressure is
too low, this will increase tyre wear, negatively affecting vehicle stability
and increasing braking distances.
● If tyres are inflated at different pressures or a tyre pressure is too low,
a tyre may be damaged and burst resulting in a loss of control of the ve-
hicle.
● The driver is responsible for ensuring that all of the vehicle tyres are
correctly inflated to the right pressure. The recommended tyre pressure
is indicated on the label ⇒ page 266.
● The tyre monitoring system can only operate correctly if all of the
tyres are inflated to the correct pressure when cold.
● Driving with tyres at the wrong pressure can cause them damage and
result in an accident. Ensure that the tyre pressures of all the tyres corre-
spond to the vehicle load.
● Before starting a journey, always inflate tyres to the correct pressure.
● Tyres with insufficient pressure are subjected to more flexing. Due to
this, the tyre could become excessively hot, causing tread separation
and also tyre blow-out.
● With an overloaded vehicle at high speed, the tyres can overheat and
burst resulting in a loss of vehicle control.
WARNING (Continued)
● Tyre pressures which are too high or too low reduce the useful life of
the tyre, affecting vehicle performance.
● If a tyre has not been punctured then it does not have to be changed
immediately; drive to the nearest specialised workshop at a moderate
speed and have the tyre checked and inflated to the correct pressure.
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.
CAUTION
Failure to heed the control lamps and text messages when they appear may
result in faults in the vehicle.
Note
● If excessively low tyre pressure is detected with the ignition on, an audi-
ble warning will sound. In the event that there is a fault in the system, an
audible warning will sound.
● Driving on dirt tracks for a long period of time or driving in a sporty style
can temporarily deactivate the TPMS. The control lamp shows a fault, but
disappears when road conditions or the driving style change. 

177
Driver assistance systems
Tyre monitoring indicator
Fig. 102 Glove compart-
ment: tyre control switch
The tyre monitor indicator compares wheel revolutions and, with this infor-
mation, the tread of each wheel using the ABS sensors. If the tread of one or
more wheels is changed, the tyre monitoring indicator will indicate as such
on the instrument panel.
Wheel tread change
The wheel tread changes when:
● Tyre pressure is manually changed
● Tyre pressure is insufficient
● Tyre structure is damaged
● The vehicle is unbalanced because of a load
● The wheels on an axle are subject to a heavier load (e.g. when towing a
heavy load)
● The vehicle is fitted with snow chains
● The temporary spare wheel is fitted
● The wheel on one axle is changed There may be a delay in the reaction of the tyre monitoring indicator
 or it
may not indicate anything under certain circumstances (e.g. sporty driving,
snow-covered or unpaved roads, or when driving with snow chains).
Calibrating the tyre monitoring indicator
After changing the tyre pressure or replacing one or more wheels, the tyre
monitoring indicator must be recalibrated. Do the same, for example, when
the front and rear wheels are swapped.
● Switch the ignition on.
● Store the new tyre pressure in the Easy Connect system with the button

and the function button Setup ⇒ page 80 or using the switch located in
the glove compartment* ⇒ Fig. 102.
When driving, the system self-calibrates the tyre pressure provided by the
driver and the wheels fitted. After a long journey with varied speeds the pro-
grammed values are collected and monitored.
With the wheels under very heavy loads, the tyre pressure must be in-
creased to the total recommended tyre pressure before the calibration
⇒ page 266.
Note
● The tyre monitoring indicator does not function when there is a fault in
the ESC or ABS ⇒ page 183.
● An erroneous indication may be given when snow chains are in use be-
cause the chains increase the tread of the wheel. 
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180Driver assistance systems
Activating/Deactivating
Fig. 104 Centre console:
parking aid button
Switching on
– Engage reverse gear or
– Press the  button on the centre console ⇒ Fig. 104. A short
confirmation signal will be heard and the button symbol will
light up yellow.
Switching off
– Drive forwards at more than 10 km/h (6 mph), or
– Press the 
button, or
– Switch the ignition off Segments of the visual indication
The distance of separation from the obstacle can be estimated using the
segments around the vehicle. With certain equipment (Radio Standard), the
yellow lines* mark the estimated path, depending on the angle of the
turned steering wheel. A white segment is seen when an obstacle is detec-
ted out of the path of the vehicle. The red segments represent obstacles de-
tected within the path. As the vehicle approaches an obstacle, the seg-
ments are displayed closer to the vehicle. When the penultimate segment is
displayed, this means that the vehicle has reached the collision zone. In the
collision zone the obstacles are represented in red, including those out of
the path. Do not continue to move forward (or backward)
⇒ 
in General
information on page 178, ⇒  in General information on page 178 !
Automatic activation 1)
When the parking aid (ParkPilot) is automatically switched on this is shown
in miniature on the left side of the display.
When slowly approaching an obstacle located in front of the vehicle, the au-
tomatic activation only functions each time the speed is reduced below ap-
proximately 10 km/h (6 mph) for the first time. If the parking aid is deactiva-
ted using the  button, the following actions must be carried out in order
for it to automatically reactivate:
● Switch off the ignition and switch it on again.
● ALTERNATIVELY: Accelerate above 10 km/h (6 mph) before reducing
speed below this number again.
● ALTERNATIVELY: Place the selector lever in position P and then move it
from this position.
● ALTERNATIVELY: Switch on and off the automatic activation in the Easy
Connect system menu.
The automatic activation with parking aid miniature indication can be
switched on and off from the Easy Connect system menu ⇒ page 81:
1)
Available only with certain equipment.

183
Intelligent technology
Practical Tips Intelligent technology
Electronic Stability Control (ESC)
Description
EI ESC helps to improve safety. It reduces the tendency to skid and improves
the stability and roadholding of the vehicle. EI ESC detects critical handling
situations, such as vehicle understeer or oversteer, or wheelspin on the
driving wheels. It stabilises the vehicle by braking individual wheels or by
reducing the engine torque. The warning lamp will flash on the instrument
panel when the ESC is intervening .
ESC includes the Anti-lock brake system (ABS), the brake assist system, the
traction control system (ASR), electronic differential lock (EDL), electronic
self-locking*, selective torque control* and tractor-trailer sway mitigation*.
ESC also helps stabilise the vehicle by changing the torque.
Anti-lock brake system (ABS)
ABS prevents the wheels from locking up under braking until the vehicle
has reached a virtual standstill. You can continue to steer the vehicle even
when the brakes are on full. Keep your foot on the brake pedal and do not
pump the brakes. You will feel the brake pedal pulsate while the ABS is
working.
Brake assist system
The brake assist system can reduce the required braking distance. The brak-
ing force is automatically boosted if you press the brake pedal quickly in an
emergency. You must keep pressing the brake pedal until the danger has
passed. Traction control system (ASR)
In the event of wheelspin, the traction control system reduces the engine
torque to match the amount of grip available. This helps the car to start
moving, accelerate or climb a gradient.
Electronic differential lock (EDL)
When the EDL detects wheelspin, it brakes the spinning wheel and directs
the power to the other driven wheel. This function is available up to a speed
of around 100 km/h, 62 mph).
To prevent the disc brake of the braked wheel from overheating, the EDL
cuts out automatically if subjected to excessive loads. The vehicle can still
be driven. The EDL will switch on again automatically when the brake has
cooled down.
Tractor-trailer sway mitigation*
If the vehicle is pulling a trailer, it will control the following: Tractor-trailers
tend to sway. When the swaying of the trailer is felt by the vehicle and de-
tected by the ESC, it will automatically brake the towing vehicle within the
limits of the system and mitigate the sway. Tractor-trailer sway mitigation is
not available in all countries.
Electronic self-locking*/Selective torque control*
When driving around bends, an electronic self-locking intervenes. The front
wheel on the inside of the curve, or the two inside wheels, respectively, are
selectively braked as required. This minimises the traction of the front
wheels, allowing you to take bends with greater precision and neutrality. In
certain circumstances, where roads are wet or snow-covered, the respective
system may not intervene.

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184Intelligent technology
Multi-collision brake
In an accident, the multi-collision brake can help the driver by braking to
avoid the risk of skidding during the accident, which could lead to further
collisions.
The multi-collision brake works for front, side or rear accidents, when the
airbag control unit records its activation level and the accident takes place
at a speed of over 10 km/h (6 mph). The EI ESC automatically brakes the
vehicle, as long as the accident has not damaged the ESC, the brake hy-
draulics or the on-board network.
The following actions control automatic braking during the accident:
● When the driver presses the accelerator. The automatic braking does not
take place.
● When the braking pressure through pressing the brake pedal is greater
than the system’s braking pressure. The vehicle will brake manually.
● Multi-collision braking will not be available if ESC is malfunctioning.
WARNING
● Nor can the ESC, ABS, ASR, EDL, electronic self-locking differential or
selective torque control systems exceed the limits imposed by the laws
of physics. Always bear this in mind, especially on wet or slippery roads.
If you notice the systems cutting in, you should reduce your speed imme-
diately to suit the road and traffic conditions. Do not be encouraged to
take risks by the presence of more safety systems. If you do, an accident
may occur.
● Please remember that the accident risk always increases if you drive
fast, especially in corners or on a slippery road, or if you follow too close
behind the vehicle in front of you. The ESC, ABS, brake assist, EDL, elec-
tronic self-locking and selective torque control systems cannot prevent
accidents: risk of accidents!
● Accelerate with caution on slippery surfaces (for example, icy or
snow-covered). Despite the control systems, the driven wheels could
spin, affecting the stability of the vehicle: risk of accident!
Note
● The ABS and ASR will only operate correctly if the four wheels have iden-
tical tyres. Any differences in the rolling radius of the tyres can cause the
system to reduce engine power when this is not desired.
● The regulating processes of the systems can make noises when they in-
tervene.
● If the warning lamp  lights up, or  alternatively, there could be a
fault ⇒ page 69. 
Switching on/off the ESC and ASR
The ESC is switched on automatically when the engine is
started. The ESC cannot be deactivated. ESC in "Sport" mode
Sport mode is activated through the Easy Connect system ⇒ page 79 menu.
The ability of the ESC to stabilise the vehicle is limited; the traction control
system (ASR) becomes disabled ⇒ 
.
The control lamp  will light up. For vehicles with a driver information sys-
tem*, the driver will be shown the electronic stability control (ESC) option:
sport. Warning! Limited stability .
In the following exceptional circumstances enabling the ESC Sport mode to
improve the traction of the wheels is tenable:
● when rocking the vehicle backwards and forwards to free it.
● Driving in deep snow or on loose surfaces.
Disable ESC Sport mode
Through the Easy Connect system ⇒ page 79. The warning lamp  will
switch off. For vehicles with a driver information system*, the driver will be
shown the electronic stability control (ESC) option: on .