2012 Seat Leon 5D check engine

220Checking and refilling levels
● Before starting any work on the battery, always observe the warnings lis-
ted under ⇒  page 218, Important safety warnings for handling a vehicle
battery.
● Do not forget to replace the battery coverings, where applicable. This
helps to protect against excess temperatures. This in turn extends the vehi-
cle service life.
For the sake of the environment
 Batteries contain toxic substances including sulphuric acid and lead. They
must be disposed of appropriately and must not be disposed of with ordi-
nary household waste. Make sure disconnected batteries cannot tip over.
Sulphuric acid could be spilt! 
Windscreen washer reservoir and wiper
blades
Windscreen washer
Fig. 112 Engine com-
partment: Windscreen
washer reservoir top The windscreen washer reservoir  contains the cleaning fluid for the wind-
screen, the rear window and the headlight washer system* ⇒ Fig. 112. Res-
ervoir capacity: ⇒ page 276.
To prevent the nozzles from becoming blocked with chalk deposits, fill res-
ervoir with water with a low calcium content (distilled water). Always add
washer fluid to the water (with anti-freeze additive in winter).
CAUTION
● Never put radiator anti-freeze or other additives into the windscreen
washer fluid.
● Never use washer fluid which contains paint thinners or solvents as it
can damage the paintwork. 

241
Emergencies
– Take out the temporary spare wheel.
Chains
For technical reasons, snow chains must not be used on the temporary
spare wheel.
If you have a puncture on one of the front wheels when using snow chains,
fit the temporary spare wheel in place of one of the rear wheels. Fit the snow
chains on the rear wheel that you have removed and replace the punctured
front wheel with this wheel.
WARNING
● After fitting the temporary spare wheel, check the tyre pressures as
soon as possible. Failure to do so may cause an accident. The tyre pres-
sures are listed on the inside of the fuel tank flap.
● Do not drive at over 80 km/h (50 mph) when the temporary spare
wheel is fitted on the vehicle: risk of accident!
● Avoid heavy acceleration, hard braking and fast cornering: risk of ac-
cident!
● Never use more than one temporary spare wheel at the same time,
risk of accident.
● No other type of tyre (normal summer or winter tyre) may be fitted on
the compact temporary spare wheel rim.
 Jump starting
Jump leads
The jump lead must have a sufficient wire cross section.
If the engine fails to start because of a discharged battery, the battery can
be connected to the battery of another vehicle to start the engine.
Jump leads
Jump leads must comply with standard DIN 72553 (see cable manufactur-
er's instructions). The wire cross section must be at least 25 mm 2
for petrol
engines and at least 35 mm 2
for diesel engines.
Note
● The vehicles must not touch each other, otherwise electricity could flow
as soon as the positive terminals are connected.
● The discharged battery must be properly connected to the on-board net-
work. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

250Fuses and bulbs
–Unlock the fuse cover ⇒ Fig. 132.
– Remove the clips from the fuse cover.
– Use the plastic clip to pull out the fuse and replace the blown
fuse with a fuse of the same rating.
The individual electrical circuits are protected by fuses. Fuses are located
under a cover below the steering wheel on the left side of the engine com-
partment.
WARNING
Do not repair fuses, and never replace a blown fuse with a higher amper-
age fuse. The electrical system could be damaged, with risk of fire.
CAUTION
● Multiple fuse values on the same line (for example, 5/10/20) in the fol-
lowing tables indicate equipment-related differences. Replace the blown
fuse with a fuse of the same amperage.
● If a newly replaced fuse blows again after a short time, the electrical sys-
tem must be checked by a specialised workshop as soon as possible.
Note
● Positions are not occupied by a fuse do not appear in the following ta-
bles.
● Some of the equipment listed in the tables below pertain only to certain
versions of the model or are an optional extra. Fuses in the vehicle interior
No.Electrical consumerAmpsF2Vacant-F4Alarm10F5Gateway5F6Anti-theft alarm system5
F7Air conditioner/heating control panel, selector
lever (automatic gearbox), relay coil, rear win-
dow heating, additional heating10
F8Diagnosis, handbrake switch, light switch, re-
verse light, interior lighting10
F9Vacant-F10Radio display10F11Vacant-F12Radio20F13Vacant-F14Air conditioner fan40F15Vacant-F16Vacant-F17Instrument panel5F18Vacant-F19Vacant-F20Vacant-F23Right lights40F24Sunroof30F25Left door30F26Heated seats30F27Vacant-F28Vacant-


253
Fuses and bulbs
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. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

267
Technical specifications
Engine specifications
Checking fluid levels
From time to time, the levels of the different fluids in the ve-
hicle must be checked. Never fill with incorrect fluids, other-
wise serious damage to the engine may be caused.
Fig. 152 Diagram for the location of the various elements Coolant expansion tank
Engine oil dipstick
Engine oil filler cap
Brake fluid reservoir
Vehicle battery (underneath the cover)
Windscreen washer reservoir
The checking and refilling of service fluids are carried out on the compo-
nents mentioned above. These operations are described in ⇒ page 209.
1
23456
Overview
You will find further explanations, instructions and restrictions on the tech-
nical specifications as of
⇒ page 263. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

Controls and displays (overview) . . . . . . . . . . . 59
Control Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Convenience closingPanoramic sliding sunroof . . . . . . . . . . . . . 104
Convenience opening Panoramic sliding sunroof . . . . . . . . . . . . . 104
Convenience opening/closing . . . . . . . . . . . . 101
Cooling system Checking the coolant . . . . . . . . . . . . . . . . . 216
Coolant temperature gauge . . . . . . . . . . . . . 67
Topping up coolant . . . . . . . . . . . . . . . . . . 216
Cornering lights . . . . . . . . . . . . . . . . . . . . . . . . 109
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 . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 164
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 164
Cruise control system . . . . . . . . . . . . . . . . . . . . 164
Curtain airbags . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 43 D
Danger of fitting a child seat on the front pas- senger seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Daytime driving light . . . . . . . . . . . . . . . . . . . . 109
DEF (instrument panel) . . . . . . . . . . . . . . . . . . . 67
Depth of tread . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Diagnostic connection . . . . . . . . . . . . . . . . . . . 189
Diesel Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Particulate filter Diesel . . . . . . . . . . . . . . . . 190
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . 144
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Dipped beam headlight . . . . . . . . . . . . . . . . . . 108
Direction of rotation (tyres) . . . . . . . . . . . . . . . 239
Disabling the airbag . . . . . . . . . . . . . . . . . . . . . . 44
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61, 62
Display/Easy Connect control panel: Cleaning . .202
Disposal Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Seat belt tensioners . . . . . . . . . . . . . . . . . . . 29
Door/rear lid warning . . . . . . . . . . . . . . . . . . . . . 73
Downhill speed control . . . . . . . . . . . . . . . . . . 158
Drink holders . . . . . . . . . . . . . . . . . . . . . . . . . . 129
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 . . . . . . . . . . . . . . . . . . . . 194, 195
Driving abroad Headlights . . . . . . . . . . . . . . . . . . . . . . . . . 112
Driving safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Driving through water . . . . . . . . . . . . . . . . . . . 190
Dynamic headlight range control . . . . . . . . . . 114
E
E10 see Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . 206
Easy Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Economic driving . . . . . . . . . . . . . . . . . . . . . . . 191
Efficiency programme Additional electrical appliances . . . . . . . . . 78
Saving tips . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Electrical accessories see Power socket . . . . . . . . . . . . . . . . . . . . 129
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . 100 Convenience opening/closing . . . . . . . . . 101
Electro-mechanical steering . . . . . . . . . . . . . . 186 Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 186
Electronic differential lock . . . . . . . . . . . . . . . . 183
Electronic Self-locking . . . . . . . . . . . . . . . . . . . 183
Electronic Stability Control (ESC) . . . . . . . . . . 183
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Automatic gearbox Backup programme . . 162
Replacing the battery . . . . . . . . . . . . . . . . . 219
Emergency braking warning . . . . . . . . . . . . . . 111
279
Index

Emergency locking and unlocking . . . . . . . . . . 96
EngineAssisted starting . . . . . . . . . . . . . . . . . . . . 241
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . 144
Start-Stop system . . . . . . . . . . . . . . . . . . . . 149
Starting up . . . . . . . . . . . . . . . . . . . . . . . . . 144
Starting up (driver messages with the me-chanical contact) . . . . . . . . . . . . . . . . . . . 145
Switching off (engine) . . . . . . . . . . . . . . . . 146
Engine compartment Closing the bonnet . . . . . . . . . . . . . . . . . . . 210
Opening the bonnet . . . . . . . . . . . . . . . . . . 210
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . 209
Engine coolant G 12 plus-plus . . . . . . . . . . . . . . . . . . . . . . 215
G 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Specifications . . . . . . . . . . . . . . . . . . . . . . . 215
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Checking oil level . . . . . . . . . . . . . . . . . . . . 212
Consumption . . . . . . . . . . . . . . . . . . . . . . . 212
Engine oil dipstick . . . . . . . . . . . . . . . . . . . 212
Inspection service . . . . . . . . . . . . . . . . . . . 211
Longlife inspection service . . . . . . . . . . . . 211
Oil properties . . . . . . . . . . . . . . . . . . . . . . . 212
Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Service intervals . . . . . . . . . . . . . . . . . . . . . 211
Specifications . . . . . . . . . . . . . . . . . . . . . . . 211
Temperature display . . . . . . . . . . . . . . . . . . . 77
Topping up . . . . . . . . . . . . . . . . . . . . . . . . . 213
Environment Ecological driving . . . . . . . . . . . . . . . . . . . . 191
Environmental friendliness . . . . . . . . . . . . 192 Environmental tip
Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Environmental tips Filling the tank . . . . . . . . . . . . . . . . . . 207, 208
Environment warning . . . . . . . . . . . . . . . . . . . . 179
ESC Electronic stability control . . . . . . . . . . . . . 183
Mode Sport . . . . . . . . . . . . . . . . . . . . . . . . . 184
Multi-collision brake . . . . . . . . . . . . . . . . . 184
ESC Sport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Exhaust tail pipe: Cleaning . . . . . . . . . . . . . . . 201
extending the rear lid locking time see rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Exterior anti-dazzle rear vision mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Exterior lighting Changing a bulb . . . . . . . . . . . . . . . . . . . . . 252
Exterior mirrors Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
F
Fastening rings . . . . . . . . . . . . . . . . . . . . . . 18, 133
Fault in the gearbox (warning lamp) . . . . . . . . 162
Fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Faults Panoramic sliding sunroof . . . . . . . . . . . . . 103
Faults in the gearbox (warning lamps) . . . . . . 162 Faulty bulbs
Changing a bulb . . . . . . . . . . . . . . . . . . . . . 252
Filling the tank . . . . . . . . . . . . . . . . . . . . . . . . . 207 Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Opening the fuel tank cap . . . . . . . . . . . . . 207
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fog light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Fold the seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Fold the back seats . . . . . . . . . . . . . . . . . . . . . 132
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 37
Front armrest . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206 Consumption . . . . . . . . . . . . . . . . . . . . . . . 264
Diesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Ethanol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Fuel consumption . . . . . . . . . . . . . . . . . . . . . . . 264
Full-LED headlights . . . . . . . . . . . . . . . . . . . . . 252
Fuses Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
G
Gear-change indicator . . . . . . . . . . . . . . . . . . . . 68
Gearbox DSG see Automatic gearbox . . . . . . . . . . . . . . . 154
Gear recommendation . . . . . . . . . . . . . . . . . . . . 68
280 Index