2012 Seat Leon 5D lane assist

Table of Contents
Manual structure . . . . . . . . . . . . . . . . . . . . 5
Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety First . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safe driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 7
Sitting position for vehicle occupants . . . . . . . . . 10
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Storing objects . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 19
Why wear seat belts? . . . . . . . . . . . . . . . . . . . . . . 21
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Seat belt tensioners . . . . . . . . . . . . . . . . . . . . . . . 28
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 30
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Knee airbag* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Side airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Curtain airbags* . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Deactivating airbags . . . . . . . . . . . . . . . . . . . . . . . 44
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Brief introduction . . . . . . . . . . . . . . . . . . . . . . . . . 47
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Securing child seats . . . . . . . . . . . . . . . . . . . . . . . 52 Operating instructions
. . . . . . . . . . . . . 59
Controls and displays . . . . . . . . . . . . . . . . . . . . . . 59
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Instruments and warning/control lamps . . . . 61
Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Control lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Driver information system . . . . . . . . . . . . . . . . . . 73
Information system . . . . . . . . . . . . . . . . . . . . . . . . 73
Introduction to the Easy Connect system* . . . 79
System settings (CAR)* . . . . . . . . . . . . . . . . . . . . . 79
Opening and closing . . . . . . . . . . . . . . . . . . . . . . 86
Central locking system . . . . . . . . . . . . . . . . . . . . . 86
Anti-theft alarm system . . . . . . . . . . . . . . . . . . . . 93
Emergency locking and unlocking . . . . . . . . . . . . 96
Rear lid (luggage compartment) . . . . . . . . . . . . . 98
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Panoramic sliding sunroof* . . . . . . . . . . . . . . . . . 103
Lights and visibility . . . . . . . . . . . . . . . . . . . . . . . . 106
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Sun blind . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Windscreen wiper system . . . . . . . . . . . . . . . . . . . 116
Rear vision mirror . . . . . . . . . . . . . . . . . . . . . . . . . 122
Seats and storage . . . . . . . . . . . . . . . . . . . . . . . . . 125
General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Seat functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Head restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Luggage compartment . . . . . . . . . . . . . . . . . . . . . 131
Air conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Heating, ventilation, cooling . . . . . . . . . . . . . . . . 134 Driving
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Ignition lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Kick-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Handbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Hill hold assist* . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Speed warning function . . . . . . . . . . . . . . . . . . . . 149
Start-Stop system* . . . . . . . . . . . . . . . . . . . . . . . . 149
Manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Automatic gearbox/DSG automatic gearbox* . . . 154
Driver assistance systems . . . . . . . . . . . . . . . . . . 164
Cruise control system (CCS)* . . . . . . . . . . . . . . . . 164
Lane Assist system* . . . . . . . . . . . . . . . . . . . . . . . 168
SEAT Drive Modes* . . . . . . . . . . . . . . . . . . . . . . . . 171
Tiredness detection (break recommendation)* . 173
Tyre monitoring systems . . . . . . . . . . . . . . . . . . . . 175
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Practical Tips . . . . . . . . . . . . . . . . . . . . . . . . . 183
Intelligent technology . . . . . . . . . . . . . . . . . . . . . 183
Electronic Stability Control (ESC) . . . . . . . . . . . . . 183
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Electro-mechanical steering . . . . . . . . . . . . . . . . . 186
Power Management . . . . . . . . . . . . . . . . . . . . . . . 187
Information recorded in the control units . . . . . . 189
Driving and the environment . . . . . . . . . . . . . . . 190
Running in the engine . . . . . . . . . . . . . . . . . . . . . 190
Driving through flooded roads . . . . . . . . . . . . . . . 190
Installation of exhaust gas filtration systems . . . 190
Economic and ecological driving . . . . . . . . . . . . . 191
Environmental friendliness . . . . . . . . . . . . . . . . . 192
3
Table of Contents

59
Controls and displays
Operating instructions Controls and displays
Overview
Door handle
Central locking switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Electric control to adjust exterior mirrors . . . . . . . . . . . . . . . . . . . .122
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Control lever for:
– Turn signals and main beam headlights . . . . . . . . . . . . . . . . .107
– Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
– Main beam assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
– Cruise control system (CCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Depending on equipment fitted:
– Lever for cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Steering wheel with horn and
– Driver airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
– On-board computer controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
– Controls for radio, telephone, navigation and speech dia-
logue system ⇒  Booklet Radio
– Paddle levers for tiptronic gearshift (automatic gearbox) . .159
Instrument panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Control lever for:
– Windscreen wipers and washer . . . . . . . . . . . . . . . . . . . . . . . . . . 116
– Wipe and wash system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
– On-board computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
12345
6
7
89
Depending on equipment fitted: Radio or display for Easy
Connect (navigation, radio, TV/video)
. . . . . . . . . . . . . . . . . . . . . .79
Depending on the equipment, buttons for:
– SEAT driving modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
– Start-Stop system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
– Park assist system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
– Hazard warning lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
– Airbag off display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Glove compartment with CD changer. . . . . . . . . . . . . . . . . . . . . . .130
Depending on the equipment:
– Multimedia interface* ⇒ Booklet Radio
– Tyre pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Front passenger airbag switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Front passenger airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Passenger seat heating control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Storage compartment
Depending on gearbox fitted, gear lever or selector lever for:
– manual gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
– automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Depending on the equipment, controls for:
– Heating and ventilation system or manual air conditioner .138, 137
– Automatic air conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Parking brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Driver seat heating control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
10
11
1213
1415161718
19
2021
Safety FirstOperating instructionsPractical TipsTechnical specifications

71
Instruments and warning/control lamps
SymbolMeaning ⇒ See
Lane Assist is switched on, but not active.⇒ page 168
On the instrument panel display: a)
Fault in the gearbox.⇒ page 162
a) Colour presentation on instrument panel with colour display.
Other control lamps
SymbolMeaning ⇒ See

Left or right turn signal.⇒ page 106
Hazard warning lights on.⇒ page 110
Trailer turn signals⇒ page 194

lights: Press the foot brake!
flashes: The selector lever locking button has
not engaged.⇒ page 154
The vehicle is stopped by engine braking.

lights: Cruise control operating.
⇒ page 164lights: Speed limiter switched on and active.flashes: The speed set by the speed limiter has
been exceeded.
Lane Assist is switched on and active.⇒ page 168
Main beam on or flasher on.⇒ page 106
On the instrument panel display:
Light Assist switched on.
On the instrument panel display:
Immobiliser active.
SymbolMeaning ⇒ See
On the instrument panel display:
Service interval display.⇒ page 65

On the instrument panel display:
Mobile telephone is connected via Bluetooth to
the original telephone device.
⇒ Book-
let Bluetooth
System

On the instrument panel display:
Mobile telephone battery charge meter. Availa-
ble only for pre-installed factory-fitted devices.

On the instrument panel display:
Ice warning. The outside temperature is lower
than +4 °C (+39 °F).⇒ page 64
On the instrument panel display:
Start-Stop system active.
⇒ page 149On the instrument panel display:
Start-Stop system not available.
On the instrument panel display:
Engine running.
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.
● Park the vehicle away from the traffic, ensuring that there are no easi-
ly inflammable materials under the vehicle which could come into contact
with the exhaust system (e.g. dry grass, fuel).
● A faulty vehicle represents a risk of accident for the driver and for oth-
er road users. If necessary, switch on the hazard warning lamps and put
out the warning triangle to advise other drivers. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

73
Driver information system
Driver information system Information system
Introduction
With the ignition switched on, it is possible to read the different functions of
the display by scrolling through the menus.
In vehicles with multifunction steering wheel, the multifunction display can
only be operated with the multifunction steering wheel buttons.
The number of menus displayed on the instrument panel will vary according
to the vehicle electronics and equipment.
A specialised workshop will be able to programme or modify additional
functions, according to the vehicle equipment. SEAT recommends visiting a
SEAT Official Service.
Some menu options can only be read when the vehicle is at a standstill.
As long as a priority 1 warning is displayed, it will not be possible to read
the menus. Some warning messages can be confirmed and made to disap-
pear with the windscreen wiper lever button or the multifunction steering
wheel button.
Additional information and warnings:
● Easy Connect system ⇒ page 79
● Driver assistance systems ⇒ page 164
● Radio or navigation system ⇒  Booklet Radio or ⇒ Booklet Navigation
system
WARNING
Any distraction may lead to an accident, with the risk of injury.
● Do not read the instrument panel display menus when driving.

Overview of the menu structure
Driving data ⇒  page 75
■ Vehicle status
■ MFD from departure
■ MFD from refuelling
■ MFD total calculation
Assist systems ⇒ table on page 75
■ Activate/deactivate Lane Assist
■ Reverse (optional)
Navigation ⇒ Booklet Navigation system Audio ⇒ Booklet Radio or ⇒ Booklet Navigation systemTelephone ⇒ Booklet Bluetooth systemVehicle ⇒ table on page 75 
Safety FirstOperating instructionsPractical TipsTechnical specifications

77
Driver information system
DisplaysMenuFunctionOil temperatureUpdated engine oil temperature digital displayCoolant tempera-
ture gaugeDigital display of the current temperature of the liquid
coolant.
Storing a speed for the speed warning
● Select the display Speed warning at --- km/h (--- mph)
● Press the button 
on the windscreen wiper lever or the button on the multifunction steering wheel to store the current speed and activate
the warning.
●
If necessary, adjust the desired speed within 5 seconds using the rocker
switch 
on the windscreen wiper lever or by turning the thumbwheel on
the multifunction steering wheel. Next, press the button  or  again
or wait several seconds. The speed is stored and the warning activated.
● To deactivate it press the button 
or the button . The stored
speed is deleted. 
Assist systems submenu
Assist systems
menuFunction
Lane Assist*Switching the Lane Assist system on or off ⇒ page 170.Tiredness detec-
tion*Switching the tiredness detection on or off (pause recom-
mendation) ⇒ page 173.
Personal convenience settings
When two people use a vehicle, SEAT recommends that each person always
uses their own remote control key. When the ignition is switched off, or the vehicle is locked, the convenience settings are stored and allocated to the
vehicle key
⇒ page 73.
The values of the personalised convenience settings are allocated to the ve-
hicle key in the Easy Connect system via the button 
and the function
button Setup ⇒ page 79:
Vehicle settings menu
■ Time
■ Language
■ Units
Convenience settings menu ■ Door unlock (individual opening, Auto Lock)
■ Convenience handling of windows
■ Rear vision mirror adjustment
Light settings menu
■ Coming home and leaving home
■ Footwell light
■ Convenience turn signals
The stored settings are automatically activated, at the latest when the igni-
tion is switched on. 
Engine oil temperature display
Vehicles without multifunction steering wheel
– To display the temperature of the engine oil, press the rocker
switch ⇒ Fig. 40 2
until the main menu appears. Enter into
Journey data . With the button 2 move to the oil temperature
gauge. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

81
Introduction to the Easy Connect system*
– Press the Driver assistance
function button to open the Driver as-
sistance settings menu.
When the function button check box is activated , the function is active.
Pressing the menu button 
will always take you to the last menu used.
MenuSubmenuPossible settingDescription
Driver Assis-
tance settings
Lane Assist (sys-
tem warning you if
you leave the lane)Lane Centring Assist⇒ page 168
Tiredness detec-
tionActivation⇒ page 173
Any changes made using the settings menus are automatically saved on
closing those menus.
WARNING
Any distraction may lead to an accident, with the risk of injury. Operating
the Easy Connect system while driving could distract you from traffic.

Parking and Manoeuvring Settings menu
–Switch the ignition on.
– Switch on the Easy Connect system.
– Press the Easy Connect button 
.
– Press the Setup
function button.
– Press the Parking and manoeuvring
button to open the Parking and
manoeuvring settings menu. When the function button check box is activated
, the function is active.
Pressing the menu button 
will always take you to the last menu used.
MenuSubmenuPossible settingDescription
Parking and Ma-
noeuvring set-
tingsParkPilot
Automatically acti-
vate, front volume,
front sound settings,
rear volume, rear
sound settings, ad-
just volume.
⇒ page 178
Any changes made using the settings menus are automatically saved on
closing those menus.
WARNING
Any distraction may lead to an accident, with the risk of injury. Operating
the Easy Connect system while driving could distract you from traffic.

Light Settings menu
–Switch the ignition on.
– Switch on the Easy Connect system.
– Press the Easy Connect button 
.
– Press the Setup
function button.
– Press the Lights
function button to open the Light settings
menu.
When the function button check box is activated , the function is active. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

168Driver assistance systems
Travelling down hills with the CCS
When travelling down hills the CCS cannot maintain a constant speed. Slow
the vehicle down using the brake pedal and reduce gears if required.
Automatic off
The cruise control system (CCS) is switched off automatically or temporarily:
● If the system detects a fault that could affect the working order of the
CCS.
● If you press and maintain the accelerator pedal for a certain time, driv-
ing faster than the stored speed.
● If the dynamic driving control systems intervene (i.e. ASR or ESC).
● If the airbag is triggered. 
Lane Assist system* Introduction
Additional information and warnings:
● SEAT information system ⇒  page 73
● Accessories, parts replacement, repairs and modifications ⇒ page 230
WARNING
The intelligent technology in the Lane Assist system cannot change the
limits imposed by the laws of physics and by the very nature of the sys-
tem. Careless or uncontrolled use of the Lane Assist system may cause
accidents and injury. The system is not a replacement for driver aware-
ness.
● Always adapt your speed and the distance to the vehicles ahead in
line with visibility, weather conditions, the condition of the road and the
traffic situation.
● Always keep your hands on the steering wheel so it can be turned at
any time.
● The Lane Assist system does not detect all road markings. The road
surfaces, road structures or objects in poor condition can be incorrectly
detected as road markings under certain circumstances by the Lane As-
sist system. In such situations, switch the Lane Assist system off imme-
diately.
● Please observe the indications on the instrument panel and act as is
necessary.
● Always pay attention to the vehicle's surroundings.
● When the area of vision of the camera becomes dirty, covered or is
damaged, the Lane Assist system function can be affected.
CAUTION
In order to avoid influencing the operation of the system, the following
points must be taken into account:
● Regularly clean the area of vision of the camera and keep it in a clean
state, without snow or ice.
● Do not cover the area of vision of the camera.
● Check that the area of vision of the windscreen camera is not damaged. 

169
Driver assistance systems
Note
● The Lane Assist system has been exclusively developed for driving on
paved roads only.
● If the Lane Assist system does not work as described in this chapter, do
not use it and contact a specialised workshop.
● If there is a fault in the system, have it checked by a specialised work-
shop. 
Indication on the display and warning lamps
Fig. 97 On the instrument panel display: Indication on the Lane Assist system display
(example 1)
Fig. 98 On the instrument panel display: Indication on the Lane Assist system display
(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. 97 .
The system is active and available, both lane lines are recognised. The
steering angle is not being corrected at this moment ⇒ Fig. 97 .
The system is operational, a yellow 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. 98 .
Two yellow lines A
light up simultaneously when both lane lines are
recognised and the Lane Assist function is active ⇒ Fig. 98 .
–
–
–
–
Safety FirstOperating instructionsPractical TipsTechnical specifications