2013 Seat Leon SC check engine light

260Checking and refilling levels
WARNING
● Brake fluid should be stored in the closed original container in a safe
place out of reach of children. Risk of poisoning!
● If the brake fluid is left in the system for too long and the brakes are
subjected to heavy use, vapour bubbles may form in the brake system.
This would seriously affect the efficiency of the brakes and the safety of
the vehicle. This may cause an accident.
CAUTION
Brake fluid should not come into contact with the vehicle paintwork, as it is
abrasive. 
Battery General information
The battery is located in the engine compartment and is almost mainte-
nance-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 disconnected, some of the vehicle's functions are “lost” ( ⇒ table
on page 260). These functions will require resetting after the battery is re-
connected.
Deactivate the anti-theft alarm* before you disconnect the battery Other-
wise the alarm will be triggered.
effectReprogrammingOne-touch function of the electric
windows⇒ page 104, One-touch opening and
closing*
Remote control keyIf the vehicle does not respond to the
key, they should be synchronised
⇒ page 91
Digital clock⇒ page 63
ESC warning lampAfter driving for a few metres, the
warning lamp goes out again.
If the vehicle is not used for long periods
The vehicle has a system for monitoring the current consumption when the
engine is left unused for long periods of time ⇒ page 226. 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 winter, the starting power may be reduced, and if necessary, the
battery should be charged ⇒ 
in Important safety warnings for handling a
vehicle battery on page 261 
Important safety warnings for handling a vehicle battery
All work on batteries requires specialist knowledge. Please refer to a SEAT
Official Service or a workshop specialising in batteries: risk of burns or ex-
ploding battery!
The battery must not be opened. Never try to change the fluid level of the
battery. Explosive gas is released from the battery that could cause an ex-
plosion. 

291
Fuses and bulbs
Fuses and bulbs Fuses
Introduction
Due to the constant update of vehicles, fuse assignments depending on
equipment and the use of the same fuse for various electrical components,
at the time of printing this manual it is not possible to provide an up-to-date
summary of the electrical components fuse positions. For detailed informa-
tion about the fuse positions, please consult a Technical Service.
In general, a fuse can be assigned to various electrical components. Like-
wise, an electrical component can be protected by several fuses.
Only replace fuses when the cause of the problem has been solved. If a
newly inserted fuse blows after a short time, you must have the electrical
system checked by a specialised workshop as soon as possible.
Additional information and warnings:
● Working in the engine compartment ⇒ page 251
WARNING
The high voltages in the electrical system can give serious electrical
shocks, causing burns and even death!
● Never touch the electrical wiring of the ignition system.
● Take care not to cause short circuits in the electrical system.
WARNING
Using unsuitable fuses, repairing fuses or bridging a current circuit with-
out fuses can cause a fire and serious injury.
● Never use a fuse with a higher value. Only replace fuses with a fuse of
the same amperage (same colour and markings) and size.
● Never repair a fuse.
● Never replace a fuse by a metal strip, staple or similar.
CAUTION
● To avoid damage to the vehicles electric system, before replacing a fuse
turn off the ignition, the lights and all electrical elements and remove the
keys from the ignition.
● If you replace a fuse with higher-rating fuse, you could cause damage to
another part of the electrical system.
● Protect the fuse boxes when open to avoid the entry of dust or humidity.
Dirt and humidity inside fuse boxes can cause damage to the electrical sys-
tem.
Note
● One single consumer could have more than one fuse.
● Several consumers could run over one single fuse. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

294Fuses and bulbs
Full-LED headlight system*
Full-LED headlights handle all light functions (daylight, side light, turn sig-
nal, dipped beam and route light) with light emitting diodes (LEDs) as a
light source.
Full-LED headlights are designed to last the lifetime of the car and light
bulbs cannot be replaced. In case of headlight failure, go to an authorised
workshop to have it replaced.
Bulbs (12 V)
Halogen headlightsTypeDaytime driving light/side lightP21W SLLDipped beam headlightsH7 LLMain beam headlightsH7 LLTurn signalPY21W LL
Full-LED main headlightsTypeNo bulbs may be replaced. All functions are
with LEDs
Front fog lightTypeFog/cornering lights*H8
Rear bulb lightTypeBrake lights/tail lightsP21W LLSide lights2x W5W LLTurn signalPY21W LLRear fog lightH21WReverse lightsP21W LL
LED rear lightTypeTurn signalPY21W LLRear fog lightH21W
LED rear lightTypeReverse lightsP21W LLThe remaining functions work with LEDs
WARNING
● Take particular care when working on components in the engine com-
partment if the engine is warm. Risk of burns.
● Bulbs are highly sensitive to pressure. The glass can break when you
touch the bulb, causing injury.
● When changing bulbs, please take care not to injure yourself on sharp
edges, in particular on the headlight housing.
CAUTION
● Remove the ignition key before working on the electric system. Other-
wise, a short circuit could occur.
● Switch off the lights or parking lights before you change a bulb.
● Take good care to avoid damaging any components.
For the sake of the environment
Please ask your specialist retailer how to dispose of used bulbs in the prop-
er manner.
Note
● Please check at regular intervals that all lighting (especially the exterior
lighting) on your vehicle is functioning properly. This is not only in the inter-
est of your own safety, but also that of all other road users.
● Before changing a bulb, make sure you have the correct new bulb.
● Do not touch the glass part of the bulb with your bare hands, use a cloth
or paper towel instead. Otherwise, the fingerprints left on the glass will va-
porise as a result of the heat generated by the bulb, they will be deposited
on the reflector and will impair its surface. 

Clutch (warning lamp) . . . . . . . . . . . . . . . . . . . 181
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Consumption (fuel) . . . . . . . . . . . . . . . . . . . . . 305
Control lampAirbag system . . . . . . . . . . . . . . . . . . . . . . . . 34
Cruise control . . . . . . . . . . . . . . . . . . . . . . . 184
Tyre monitor indicator warning lamp . . . . 215
Tyre monitoring systems . . . . . . . . . . . . . . 215
Windscreen wiper fluid level . . . . . . . . . . . 120
Control lamps adaptive cruise control . . . . . . . . . . . . . . . 190
applying the brake . . . . . . . . . . . . . . . . . . . 162
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Control of function Rain sensor . . . . . . . . . . . . . . . . . . . . . . . . . 123
Controls and displays (overview) . . . . . . . . . . . 59
Control Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Convenience closing Panoramic sliding sunroof . . . . . . . . . . . . . 107
Convenience opening Panoramic sliding sunroof . . . . . . . . . . . . . 107
Convenience opening/closing . . . . . . . . . . . . 103
Cooling system Checking the coolant . . . . . . . . . . . . . . . . . 258
Coolant temperature gauge . . . . . . . . . . . . . 68
Topping up coolant . . . . . . . . . . . . . . . . . . 258
Cornering lights . . . . . . . . . . . . . . . . . . . . . . . . 112
Correct adjustment of front seat head re- straints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Correct adjustment of rear seat head restraints In-use and non-use positions . . . . . . . . . . . 15 Correct sitting position
front passenger . . . . . . . . . . . . . . . . . . . . . . 12
Incorrect sitting position . . . . . . . . . . . . . . . 15
passenger . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . 184 Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 184
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 184
Cruise control system . . . . . . . . . . . . . . . . . . . . 184
Curtain airbags . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 44
D Danger of fitting a child seat on the front pas- senger seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Daytime driving light . . . . . . . . . . . . . . . . . . . . 112
DEF (instrument panel) . . . . . . . . . . . . . . . . . . . 67
Depth of tread . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Diagnostic connection . . . . . . . . . . . . . . . . . . . 228
Diesel Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Particulate filter Diesel . . . . . . . . . . . . . . . . 230
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . 163
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Dipped beam headlight . . . . . . . . . . . . . . . . . . 111
Direction of rotation (tyres) . . . . . . . . . . . . . . . 281
Disabling the airbag . . . . . . . . . . . . . . . . . . . . . . 45 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61, 62
Display/Easy Connect control panel: Cleaning . .242
Disposal
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Seat belt tensioners . . . . . . . . . . . . . . . . . . . 30
Distance control see adaptive cruise control . . . . . . . . . . . . 189
Door/rear lid warning . . . . . . . . . . . . . . . . . . . . . 73
Doors Childproof locks . . . . . . . . . . . . . . . . . . . . . . 95
Downhill speed control . . . . . . . . . . . . . . . . . . 178
Drawer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Drink holders . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Driver see Correct sitting position . . . . . . . 11, 12, 13
Driver information system CD/radio display . . . . . . . . . . . . . . . . . . . . . 73
Door/rear lid warning . . . . . . . . . . . . . . . . . . 73
Engine oil temperature display . . . . . . . . . . 77
Operation via the windscreen wiper lever . 73
Outside temperature display . . . . . . . . . . . . 73
Driving With a trailer . . . . . . . . . . . . . . . . . . . . 234, 235
Driving abroad Headlights . . . . . . . . . . . . . . . . . . . . . . . . . 115
Driving safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Driving through water . . . . . . . . . . . . . . . . . . . 230
Dynamic headlight range control . . . . . . . . . . 117
327
Index

E
E10see Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . 246
Easy Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Economic driving . . . . . . . . . . . . . . . . . . . . . . . 231
EDL see Electronic differential lock . . . . . . . . . 222
Efficiency programme Additional electrical appliances . . . . . . . . . 77
Saving tips . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Electrical accessories see Power socket . . . . . . . . . . . . . . . . . . . . 135
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . 102 Convenience opening/closing . . . . . . . . . 103
Electro-mechanical steering . . . . . . . . . . . . . . 225 Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 225
Electronic differential lock . . . . . . . . . . . . . . . . 222
Electronic Self-locking . . . . . . . . . . . . . . . . . . . 222
Electronic Stability Control (ESC) . . . . . . . . . . 222
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 Automatic gearbox Backup programme . . 181
Replacing the battery . . . . . . . . . . . . . . . . . 262
Emergency braking warning . . . . . . . . . . . . . . 114
Emergency locking and unlocking . . . . . . . . . . 98
Engine Assisted starting . . . . . . . . . . . . . . . . . . . . 283
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . 163
Start-Stop system . . . . . . . . . . . . . . . . . . . . 169
Starting up . . . . . . . . . . . . . . . . . . . . . . . . . 163 Starting up (driver messages with the me-
chanical contact) . . . . . . . . . . . . . . . . . . . 164
Switching off (engine) . . . . . . . . . . . . . . . . 165
Engine compartment Closing the bonnet . . . . . . . . . . . . . . . . . . . 253
Opening the bonnet . . . . . . . . . . . . . . . . . . 252
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . 251
Engine coolant G 12 plus-plus . . . . . . . . . . . . . . . . . . . . . . 257
G 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Specifications . . . . . . . . . . . . . . . . . . . . . . . 257
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Checking oil level . . . . . . . . . . . . . . . . . . . . 255
Consumption . . . . . . . . . . . . . . . . . . . . . . . 255
Engine oil dipstick . . . . . . . . . . . . . . . . . . . 255
Inspection service . . . . . . . . . . . . . . . . . . . 253
Longlife inspection service . . . . . . . . . . . . 253
Oil properties . . . . . . . . . . . . . . . . . . . . . . . 254
Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Service intervals . . . . . . . . . . . . . . . . . . . . . 253
Specifications . . . . . . . . . . . . . . . . . . . . . . . 253
Temperature display . . . . . . . . . . . . . . . . . . . 77
Topping up . . . . . . . . . . . . . . . . . . . . . . . . . 256
Environment Ecological driving . . . . . . . . . . . . . . . . . . . . 231
Environmental friendliness . . . . . . . . . . . . 232
Environmental tip Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Environmental tips Filling the tank . . . . . . . . . . . . . . . . . . 248, 250
Environment warning . . . . . . . . . . . . . . . . . . . . 219 ESC
Electronic stability control . . . . . . . . . . . . . 222
Multi-collision brake . . . . . . . . . . . . . . . . . 223
Sport Mode . . . . . . . . . . . . . . . . . . . . . . . . . 223
Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Exhaust tail pipe: Cleaning . . . . . . . . . . . . . . . 242
extending the rear lid locking time see rear lid . . . . . . . . . . . . . . . . . . . . . . . . . 100
Exterior lighting Changing a bulb . . . . . . . . . . . . . . . . . . . . . 293
Exterior mirrors Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
F
Fastening rings . . . . . . . . . . . . . . . . . . . . . . 18, 145
Fault in the gearbox (warning lamp) . . . . . . . . 181
Fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Faults Panoramic sliding sunroof . . . . . . . . . . . . . 106
Faults in the gearbox (warning lamps) . . . . . . 182
Faulty bulbs Changing a bulb . . . . . . . . . . . . . . . . . . . . . 293
Filling the tank . . . . . . . . . . . . . . . . . . . . . . . . . 248 Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Opening the fuel tank cap . . . . . . . . . . . . . 248
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Fold the seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
328 Index