alarm Seat Leon SC 2017 User Guide

Operation
Anti-theft alarm When the vehicle is locked, the alarm is trig-
ger
ed when the el
ectrical connection be-
tween vehicle and trailer is interrupted.
Always turn off the anti-theft alarm system
before connecting or disconnecting a trailer
››› page 133.
Conditions for the integration of a trailer in
the anti-theft alarm system.
● The vehicle is factory-equipped with an an-
ti-theft al

arm system and a towing bracket
device.
● The trailer is connected electrically to the
tow
ing vehicle by the trailer connector.
● The electrical system of the vehicle and the
trail
er are prepared for operation.
● The vehicle is locked with the ignition key
and the anti-theft al
arm system is activated.CAUTION
For technical reasons, trailers fitted with rear
LED lights ar

e not integrated in the anti-theft
alarm system. Driving tips
Driving with a trailer always requires extra
c
ar e. W

eight distribution
The weight di
stribution of a loaded trailer
with an unladen vehicle is very unfavourable.
However, if this cannot be avoided, drive ex-
tra slowly to allow for the unbalanced weight
distribution.
Speed
The stability of the vehicle and trailer is re-
duced with increasing speed. For this reason,
it is advisable not to drive at the maximum
permissible speed in an unfavourable road,
weather or wind conditions. This applies es-
pecially when driving downhill.
You should always reduce speed immediately
if the trailer shows the slightest sign of snak-
ing. Never try to stop the “snaking” by in-
creasing speed.
Always brake in due course. If the trailer has
an overrun brake, apply the brakes gently at
first and then, firmly. This will prevent the
jerking that can be caused by locking of trail-
er wheels. Select a low gear in due course
before going down a steep downhill. This en-
ables you to use the engine braking to slow
down the vehicle.
Reheating
At very high temperatures and during pro-
longed slopes, driving in a low gear and high
engine speed, always monitor the coolant
temperature gauge ››› page 119. Electronic stability control*
The ESC* sys
tem helps to stabilise the trailer
in case of skidding or rocking.
Retrofitting a towing bracket* Fig. 245
Attachment points for towing brack-
et . 254

Checking and refilling levels
CAUTION
● Do not mi x
cleaning products recommen-
ded by SEAT with other products. This could
lead to flocculation and may block the wind-
screen washer jets.
● When topping up service fluids, make abso-
lutely c
ertain that you fill the fluids into the
correct reservoirs. Using the wrong fluids
could cause serious malfunctions and engine
damage!
● Not having windscreen wiper fluid reduces
vis
ibility through the windscreen, and leads
to loss of visibility in headlights in models
with headlight washer. Battery
Gener a
l

informationRead the additional information carefully
› ›
›

 page 61.
The battery is located in the engine compart-
ment and is almost maintenance-free. It is
checked as part of the Inspection Service.
Nevertheless, check the terminals are clean
and have the correct tightening torque, espe-
cially in summer and winter.
Disconnecting the battery
The battery should only be disconnected in
exceptional cases. When the battery is dis- connected, some of the vehicle's functions
are “los

t” (››› table on page 277). These
functions will require resetting after the bat-
tery is reconnected.
Deactivate the anti-theft alarm* before you
disconnect the battery Otherwise the alarm
will be triggered.
FunctionReprogramming
One-touch function of
the electric windows››› page 138, One-touch
opening and closing*.
Remote control key
If the vehicle does not re-
spond to the key, they
should be synchronised
››› page 132.
Digital clock››› page 116.
ESC warning lampAfter driving for a few me-
tres, the warning lamp goes
out again. If the vehicle is not used for long periods
The
v
ehic

le has a system for monitoring the
current consumption when the engine is left
unused for long periods of time ››› page 201.
Some functions, such as the interior lights, or
the remote door opening, may be temporarily
disabled to prevent the battery from running
flat. These functions will come back on as
soon as the ignition is switched on and the
engine started. Winter conditions
During the w

inter, the starting power may be
reduced, and if necessary, the battery should
be charged ››› in Important safety warn-
in g
s

for handling a vehicle battery on
page 278
Important safety warnings for han-
dling a v
ehicle battery All work on batteries requires specialist
kno
wl
edg

e. Please refer to a SEAT Official
Service or a workshop specialising in batter-
ies: risk of burns or exploding battery!
The battery must not be opened. Never try to
change the fluid level of the battery. Other-
wise explosive gas is released from the bat-
tery that could cause an explosion. 
Wear eye protection.

Battery acid is very corrosive and caustic. Wear
protective gloves and eye protection. In the event
of electrolyte splashes, rinse off with plenty of
water.

Fires, sparks, open flames and smoking are pro-
hibited.

The battery should only be charged in a well-ven-
tilated zone. Risk of explosion!

Keep children away from acid and batteries!»
277
Technical data
Advice
Operation
Emergencies
Safety

Index
Index
A
A C
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
radar sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 159, 256
Adaptive cruise control . . . . . . . . . . . . . . . . . . . . 214 function for preventing overtaking in an insidelane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
indications on the display . . . . . . . . . . . . . . . . 216
malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
radar sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
special driving situations . . . . . . . . . . . . . . . . . 222
warning and control lamp . . . . . . . . . . . . . . . . 216
Adaptive Cruise Control deactivating temporarily . . . . . . . . . . . . . . . . . 221
operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Additional consumers (efficiency program) . . . . . 43
Adjusting front head restraints . . . . . . . . . . . . . . . . . . . . . . 78
front seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
rear head restraints . . . . . . . . . . . . . . . . . . . . . 153
seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Adjusting the head restraints front head restraints . . . . . . . . . . . . . . . . . . . . . 153
Adjustment CAR menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
front head restraints . . . . . . . . . . . . . . . . . . . . . 153
rear head restraints . . . . . . . . . . . . . . . . . . . . . . 78
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 85 activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
control lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 deactivation of front airbag . . . . . . . . . . . . . . . . 89
desc
ription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
front airbags . . . . . . . . . . . . . . . . . . . . . . . . . 22, 87
functioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
head-protection airbags . . . . . . . . . . . . . . . 24, 88
knee airbags . . . . . . . . . . . . . . . . . . . . . . . . . 23, 87
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 24, 87
Air conditioning Climatronic . . . . . . . . . . . . . . . . . . . . . . . . 52, 173
heating and fresh air . . . . . . . . . . . . . . . . . . . . . 56
manual air conditioning . . . . . . . . . . . . . . . . . . . 54
user instructions . . . . . . . . . . . . . . . . . . . . . . . . 175
Air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Air recirculation . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Alcantara: cleaning . . . . . . . . . . . . . . . . . . . . . . . 263
Anchoring the front tow line. . . . . . . . . . . . . . . . . . . . . . . . . 99
Anti-freeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Anti-locking system . . . . . . . . . . . . . . . . . . . . . . . 187
Anti-puncture . . . . . . . . . . . . . . . . . . . . . . . . . . 65, 95
Anti-puncture kit . . . . . . . . . . . . . . . . . . . . . . . . 65, 95 check after 10 minutes . . . . . . . . . . . . . . . . . . . . 97
Anti-puncture set . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Anti-theft alarm . . . . . . . . . . . . . . . . . . . . . 125, 133 trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
vehicle interior monitoring and anti-tow pro-tection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Anti-theft security system . . . . . . . . . . 15, 125, 131
Anti-tow protection . . . . . . . . . . . . . . . . . . . . . . . 135
Aspects to note before setting off . . . . . . . . . . . . . 74
ASR see Traction control system . . . . . . . . . . . . . . . 187
Assistance systems ACC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
adaptive cruise control . . . . . . . . . . . . . . . . . . . 214
Auto Hold function . . . . . . . . . . . . . . . . . . . . . . 208
cruise control system . . . . . . . . . . . . . . . . . . . . 209
Emergency Assist . . . . . . . . . . . . . . . . . . . . . . . 228 emergency brake assist (Front Assist) . . . . . . . 210
fatigue detection
. . . . . . . . . . . . . . . . . . . . . . . 236
parking aid . . . . . . . . . . . . . . . . . . . . . . . 237, 238
traffic jam assist . . . . . . . . . . . . . . . . . . . . . . . . 227
traffic sign detection system . . . . . . . . . . . . . . 233
tyre monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 284
tyre monitoring indicator . . . . . . . . . . . . . . . . . 285
tyre monitoring systems . . . . . . . . . . . . . . . . . 283
Assisted starting . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Audible warning signal control and warning lamps . . . . . . . . . . . . . . . 119
lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
unfastened safety belt . . . . . . . . . . . . . . . . . . . . 80
Auto Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Auto Hold function . . . . . . . . . . . . . . . . . . . . . . . . 208
Auto Lock (central locking) . . . . . . . . . . . . . . . . . 125
Automatic car washes switching the Auto Hold function off . . . . . . . . 209
Automatic dipped beam control . . . . . . . . . . . . . 141
Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . . . 191 downhill speed control . . . . . . . . . . . . . . . . . . 196
driving tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
emergency program . . . . . . . . . . . . . . . . . . . . . 197
kick-down feature . . . . . . . . . . . . . . . . . . . . . . . 195
launch control program . . . . . . . . . . . . . . . . . . 195
manual release of the selector lever . . . . . . . . . 50
safety interlock for ignition key . . . . . . . . . . . . 178
selector lever lock . . . . . . . . . . . . . . . . . . . . . . . 192
selector lever positions . . . . . . . . . . . . . . . . . . 191
steering wheel with gear shift paddles . . . . . . 193
tiptronic . . . . . . . . . . . . . . . . . . . . . . . . . . 191, 193
AUX-IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
B Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Before setting off . . . . . . . . . . . . . . . . . . . . . . . . . . 74
315

Index
Belt tensioners contr
o
l lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Belt tightening . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Bench seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17, 270 opening the bonnet . . . . . . . . . . . . . . . . . . . . . 271
Brake emergency braking function . . . . . . . . . . . . . . 184
Brake assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 brake assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
brake servo . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
electronic parking brake . . . . . . . . . . . . . . . . . 183
moving off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
new brake pads . . . . . . . . . . . . . . . . . . . . . . . . 186
C Camera cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Lane Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
natural gas tank . . . . . . . . . . . . . . . . . . . . . . . . 265
windscreen washer water . . . . . . . . . . . . . . . . 276
Car-care products . . . . . . . . . . . . . . . . . . . . . . . . . 257
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . . . 203 malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
CCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
CD-ROM player (navigation) . . . . . . . . . . . . . . . . 158
Central locking adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . . . . 133
central locking switch . . . . . . . . . . . . . . . . . . . . 128 electric windows . . . . . . . . . . . . . . . . . . . . . . . . 137
emergency
locking . . . . . . . . . . . . . . . . . . . . . . . 16
Keyless Access . . . . . . . . . . . . . . . . . . . . . . . . . 129
Panoramic sliding/tilting sunroof . . . . . . . . . . 137
remote control key . . . . . . . . . . . . . . . . . . . . . . 127
selective unlocking system . . . . . . . . . . . . . . . 127
Central locking system . . . . . . . . . . . . . . . . . . . . . 125
Centre console . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cetane number (diesel fuel) . . . . . . . . . . . . . . . . 267
Changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . . . 103 fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
number plate light . . . . . . . . . . . . . . . . . . . . . . 110
rear bulb in the side panel . . . . . . . . . . . . . . . . 108
rear bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . . . 66 subsequent work . . . . . . . . . . . . . . . . . . . . . . . . 68
Changing gear engaging gears (manual gearbox) . . . . . . . . . 190
Changing main headlight turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Changing settings CAR menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Changing the blades . . . . . . . . . . . . . . . . . . . . . . . 97
Changing the main beam headlight bulb main beam headlight . . . . . . . . . . . . . . . . . . . . 106
Changing the main headlight bulb day light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
dipped headlight . . . . . . . . . . . . . . . . . . . . . . . 105
Changing the wiper blades . . . . . . . . . . . . . . . . . . 72
Charging the battery . . . . . . . . . . . . . . . . . . . . . . 278
Checking levels engine compartment . . . . . . . . . . . . . . . . . . . . 270
Childproof locks electric windows . . . . . . . . . . . . . . . . . . . . . . . . 136 Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25, 92
cate gorisation into groups . . . . . . . . . . . . . . . . . 92
ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
safety instructions . . . . . . . . . . . . . . . . . . . . 25, 91
securing with seat belt . . . . . . . . . . . . . . . . . . . . 26
Top Tether system . . . . . . . . . . . . . . . . . . . . . 27, 29
Top Tether System . . . . . . . . . . . . . . . . . . . . . . . 29
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257 alcantara . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
carbon parts . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Easy Connect control panel . . . . . . . . . . . . . . . 261
exhaust pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
natural leather . . . . . . . . . . . . . . . . . . . . . . . . . 263
plastic parts . . . . . . . . . . . . . . . . . . . . . . 260, 261
radio screen . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
rims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
trims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
washing the vehicle . . . . . . . . . . . . . . . . . . . . . 257
windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Climatronic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
panoramic sliding sunroof . . . . . . . . . . . . . . . . 138windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Clutch (warning lamp) . . . . . . . . . . . . . . . . . . . . . 197
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Connectivity Box . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Control and warning lamps . . . . . . . . . . . . . 47, 119 adaptive cruise control . . . . . . . . . . . . . . . . . . . 216
airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
applying the brake . . . . . . . . . . . . . . . . . . . . . . 216
ASR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
316