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

Checking and refilling levels  
parts water); otherwise, a 1:4 proportion of  
mixture in the washer fluid tank.  
CAUTION  
Windscreen washer reservoir  
Do not mix cleaning products recommen-  
ded by SEAT with other products. This  
could lead to flocculation and may block  
the windscreen washer jets.  
Checking and topping up the wind-  
screen washer reservoir  
Capacity  
The reservoir holds approximately 3 litres in  
versions without headlight washer and 5 litres  
in versions with headlight washer.  
When topping up service fluids, make ab-  
Read the additional information carefully  
››› page 50  
solutely certain that you fill the fluids into  
the correct reservoirs. Using the wrong flu-  
ids could cause serious malfunctions and  
engine damage!  
Check the water level in the windscreen  
washer reservoir regularly and top up as re-  
quired.  
WARNING  
If the water from the windscreen washer  
does not contain enough anti-freeze, it may  
freeze on the windscreen and rear window,  
reducing forward and rear visibility.  
Not having windscreen wiper fluid re-  
duces visibility through the windscreen,  
and leads to loss of visibility in headlights  
in models with headlight washer.  
The container for the windscreen washer  
contains the cleaning fluid for the wind-  
screen, the rear window and the headlight  
washer system*.  
In winter, ensure the windscreen washer  
contains enough anti-freeze.  
In cold conditions, you should not use the  
Open the bonnet page 322.  
The windscreen washer reservoir is marked  
›››  
windscreen wiper system unless you have  
warmed the windscreen with the ventila-  
tion system. The antifreeze could freeze on  
the windscreen and reduce visibility.  
Battery  
with the symbol on the cap.  
General information  
Check there is enough windscreen water in  
the reservoir.  
Read the additional information carefully  
››› page 50.  
WARNING  
Recommended windscreen wipers  
Never mix an unsuitable antifreeze or other  
similar additives with the windscreen wash-  
er water. A greasy layer may be formed on  
the windscreen which will impair visibility.  
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.  
For the hottest seasons we recommend  
summer G 052 184 A1 for clear glass. Propor-  
tions of the mixture in the washer fluid tank:  
1:100 (1 part concentrate per 100 parts wa-  
ter).  
Use clean water with a window cleaner  
recommended by SEAT.  
All year round, G 052 164 A2 for clear glass.  
If necessary, add a suitable antifreeze to  
the water in the reservoir.  
Approximate proportion of the winter mixture,  
up to -18°C (0°F): 1:2 (1 part concentrate per 2  
Disconnecting the battery  
The battery should only be disconnected in  
exceptional cases. When the battery is  
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329  
Practical tips  
disconnected, some of the vehicle's functions  
Winter conditions  
Service or a workshop specialising in batter-  
ies: risk of burns or exploding battery!  
are “lost” ( table on page 330). These  
›››  
During the winter, the starting power may be  
reduced, and if necessary, the battery should  
functions will require resetting after the bat-  
tery is reconnected.  
The battery must not be opened. Never try  
to change the fluid level of the battery. Oth-  
erwise explosive gas is released from the bat-  
tery that could cause an explosion.  
be charged  
in Important safety warn-  
›››  
ings for handling a vehicle battery on  
page 330  
Deactivate the anti-theft alarm* before you  
disconnect the battery Otherwise the alarm  
will be triggered.  
Wear eye protection.  
Function  
Reprogramming  
Warning lamp  
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.  
One-touch function of  
the electric windows  
page 140, One-touch  
›››  
It lights up  
opening and closing*.  
Alternator fault.  
If the vehicle does not re-  
spond to the key, they  
should be synchronised  
Fires, sparks, open flames and smoking are  
prohibited.  
Remote control key  
The control lamp lights up when the ignition is  
switched on. It should go out when the engine  
has started running.  
page 135.  
›››  
›››  
The battery should only be charged in a well-  
ventilated zone. Risk of explosion!  
Digital clock  
page 114.  
If the control lamp lights up while driving,  
the alternator is no longer charging the bat-  
tery. You should immediately drive to the  
nearest specialised workshop.  
Keep children away from acid and batteries!  
After driving for a few me-  
tres, the warning lamp  
goes out again.  
ESC warning lamp  
WARNING  
When repairing or working on the electri-  
cal system, proceed as follows:  
If the vehicle is not used for long periods  
You should avoid using electrical equipment  
that is not absolutely necessary because this  
will drain the battery.  
The vehicle has a system for monitoring the  
current consumption when the engine is left  
1. Remove the key from the ignition. The  
negative cable on the battery must be  
disconnected.  
unused for long periods of time page 261.  
›››  
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.  
2. When the repair is finished, recon-  
nect the negative pole of the battery.  
Important safety warnings for han-  
dling a vehicle battery  
Switch off all electrical devices before  
reconnecting the battery. Reconnect first  
the positive cable and then the negative  
cable. Never reverse the polarity of the  
All work on batteries requires specialist  
knowledge. Please refer to a SEAT Official  
330  
Checking and refilling levels  
Only use a charger which is compatible for  
use with 12 V nominal voltage batteries. The  
charge must not exceed a voltage of 15 V.  
Replacing the battery  
connections. This could cause an electrical  
fire.  
The new battery should have the same speci-  
fications (amperage, load and voltage) as  
the used battery.  
Ensure that the vent hose is always con-  
nected to the battery.  
Now connect the battery charger to the  
power socket and switch on.  
Never use damaged batteries. This could  
Your vehicle is equipped with an intelligent  
power management system to control the  
distribution of electrical energy page 261.  
cause an explosion! Replace a damaged  
battery immediately.  
At the end of the charging process: switch  
off the battery charger and disconnect the  
power socket cable.  
›››  
The power management function ensures  
that the battery is charged much more effi-  
ciently than on vehicles without a power  
management system. To maintain this func-  
tion after replacing the battery, we recom-  
mend that the replacement battery used is of  
the same make and type as the original fitted  
battery. To make proper use of the power  
management function after the battery has  
been changed, have the battery coded to the  
power management mode at a specialised  
workshop.  
CAUTION  
Finally disconnect the charger cables from  
the battery.  
Never disconnect the battery if the igni-  
tion is switched on or if the engine is run-  
ning. This could damage the electrical sys-  
tem or electronic components.  
Replace the battery cover correctly.  
Close the bonnet  
››› page 18.  
Important: Before you charge the battery  
make sure you read the manufacturer's in-  
structions for using the battery charger.  
Charging the battery  
Terminals for charging the battery are fitted in  
the engine compartment.  
WARNING  
Never charge a battery that has frozen: re-  
place it! Failure to do so may lead to an ex-  
plosion.  
Note the warnings  
in Important safe-  
ty warnings for handling a vehicle bat-  
tery on page 330 and  
›››  
CAUTION  
Some vehicles, for example those with  
.
›››  
the Start-Stop system* are fitted with a  
special battery (AGM-type or EFB-type  
battery). If any other type of battery is fit-  
ted, the Start-Stop function may be consid-  
erably reduced and the vehicle may not  
stop on repeated occasions.  
Switch off all electrical devices. Remove  
the ignition key.  
Note  
Use only the terminals in the engine com-  
partment to charge the battery.  
Raise the bonnet  
››› page 18.  
Open the battery cover.  
Connect the charger clamps as described  
to the positive pole of the battery (+) and  
exclusively to an earth on the bodywork  
(–).  
Make sure that the vent hose is always  
attached to the original opening on the  
side of the battery. Gases or battery acid  
»
331  

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