2012-2020 Seat Leon 4 Door Practical tips -> AdBlue? User Manual
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Practical tips -> AdBlue? for Your Seat Leon 4 Door Third Generation (2012-2020)

Practical tips  
page 320. If this information is ignored,  
›››  
WARNING  
Note  
later on it will not be possible to re-start the  
engine. If this warning does not appear, it is  
not necessary to refill the AdBlue® tank.  
The vehicle is not suitable for liquefied nat-  
ural gas (LNG) or liquefied petrol gas (LPG),  
so LNG or LPG should not be used under  
any circumstances. Liquid gas can cause  
an explosion of the natural gas tanks and  
cause severe injuries!  
Have the natural gas system checked regu-  
larly by a specialised workshop, according  
to the Maintenance Programme.  
AdBlue® is a registered brand of the German  
Association of the Automotive Industry (VDA)  
and is also known as AUS32 or DEF (Diesel  
Exhaust Fluid).  
AdBlue®  
Information on AdBlue®  
WARNING  
CAUTION  
Filling the AdBlue® tank excessively can  
cause damage to the tank.  
Damaged, corroded or rusted tanks can re-  
sult in serious injury or even death.  
Have the natural gas deposits checked at  
least every 4 years (visual check).  
Natural gas tanks have a limited service  
Refilling AdBlue®  
life. Have the natural gas tanks replaced  
when required. You can obtain further infor-  
mation about this at SEAT dealers or speci-  
alised workshops.  
Fig. 307 Related video  
The consumption of AdBlue® depends on  
your personal driving style, the temperature  
of the system and on the outdoor tempera-  
ture when the vehicle is used.  
AdBlue® freezes at temperatures of -11°C  
(+13°F). The system has heating elements  
that guarantee its operation even at low tem-  
peratures.  
The AdBlue® tank level capacity is approxi-  
mately 11 litres.  
The AdBlue® tank should never be empty.  
When the distance to empty drops below  
2400 km, a warning to refill the AdBlue® tank  
will appear on the dash panel display  
WARNING  
If the vehicle underbody touches the  
ground or in the event of a rear collision,  
there could be damage to the natural gas  
tanks.  
Check whether there is a smell of gas.  
If you notice a smell of gas, take the vehi-  
Fig. 308 AdBlue tank cap.  
cle to a specialised workshop immediately  
and have the natural gas system checked.  
Operations prior to refilling  
Park the vehicle on a flat surface. If the vehi-  
cle is not parked on a flat surface, but, for ex-  
ample, on a slope or on the side of a curb, the  
320  
Checking and refilling levels  
level indicator may not detect the load prop-  
erly.  
Wait until the contents of the refill bottle  
WARNING  
have been poured into the AdBlue® tank. Do  
not compress or break the bottle!  
AdBlue® should only be stored in the origi-  
nal container, which should be tightly  
closed and kept in a safe place.  
If a warning message about AdBlue® levels  
appears on the dash panel display, fill at  
least the minimum amount required (ap-  
prox. 5 litres) Only after adding this amount  
will the system detect that AdBlue® has been  
added and you will be able to start the en-  
gine again. The maximum amount that can  
be refilled is 11 litres.  
Turn the bottle in a counter-clockwise di-  
rection and gently pull it upwards  
.
›››  
Never keep AdBlue® in empty food con-  
tainers, bottles or other similar containers.  
Other people may confuse it for other  
products.  
Keep AdBlue® out of the reach of chil-  
dren.  
The AdBlue® tank is full when no more liquid  
comes out of the bottle.  
Screw on the tank cap in a clockwise direc-  
tion until it is tightly closed.  
Close the fuel tank flap.  
Switch the ignition off. If the ignition is not  
switched off during refilling, the warning to re-  
fill may continue to appear on the instrument  
panel display.  
CAUTION  
Operations before driving  
When refilling, the nozzle grip should be  
aligned downward. Otherwise the nozzle  
will not connect automatically.  
After refilling the tank, only switch on the ig-  
nition.  
Leave the ignition on for at least 30 sec-  
Fill with a refill bottle  
Only use AdBlue® that complies with ISO  
22241-1. Only use original containers.  
Do not try to add any more additive after  
onds for the system to detect the fluid load.  
the nozzle has stopped for the first time.  
The AdBlue tank could overflow and AdBlue  
could spill out.  
Make sure you wait for at least 30 seconds  
before starting the engine!  
Open the tank cover Fig. 308.  
Unscrew the tank cap by turning it in an an-  
›››  
Only use AdBlue® that complies with ISO  
22241-1. Only use original containers.  
Never mix AdBlue® with water, fuel or ad-  
ditives. Any type of damage caused by  
such a mixture will not be covered by the  
warranty.  
Refilling the dispenser with AdBlue  
ti-clockwise direction.  
Valid for vehicles with selective catalytic re-  
duction.  
Please observe the manufacturer's instruc-  
tions, indicated on the refill bottle.  
Open the tank cap.  
Turn the SCR tank cap anti-clockwise  
Fig. 308.  
Check the expiry date.  
Never pour AdBlue® into the fuel tank.  
This could result in engine damage.  
Remove the cap of the refill bottle.  
›››  
Insert the neck of the bottle in the tank filler  
Add AdBlue until the nozzle stops for the  
first time.  
Do not carry the refill bottle inside the  
neck vertically and screw the bottle on by  
hand, by turning it in a clockwise direction.  
vehicle. If there is a leak (due to tempera-  
ture changes or damage to the bottle), the  
AdBlue® may damage the vehicle.  
Close the SCR tube by turning it clockwise  
Press the refill bottle in the direction of the  
»
until you hear a click.  
filler neck and hold it in this position.  
321  

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