2020 VOLKSWAGEN ID.4 battery

x
Ne ver charge a 12-volt vehicle battery
which is frozen or has been frozen. Dis-
charged 12-volt vehicle batteries can al-
ready freeze at temperatures of around
0

1
Vehicle with discharged 12-volt vehicle
battery that is being jump-started. 2
Vehicle with 12-volt vehicle battery that
is supplying power and jump-starting
the other v
ehicle. 3
Suitable earth connection: jump-start
connection point. NOTICE
Observe the instructions for jump starting in
the owner

x
All work on the 12- volt vehicle battery
and the electrical system can cause seri-
ous chemical burns, fire or electric
shocks. Always read the warnings and
safety information before carrying out
any kind of work on the 12-volt vehicle
battery

x
The refilled brake fluid must be new. WARNING
Brake fluid is toxic.
x In order to reduce the risk of poisoning,
ne
ver use bottles or other containers to
store brake fluid. There is always a risk
of someone drinking from such contain-
ers, even if they are labelled appropri-
ately.
x Brake fluid must always be stored in its
original sealed container and kept out of
the reach of children. NOTICE
Brake fluid that has leaked or been spilt can
damage the v
ehicle paintwork, plastic parts
and tyres. Wipe off brake fluid that has
leaked or been spilled immediately from all
parts of the vehicle. Brake fluid can pollute the environ-
ment. Any spilt service fluids must be
cleaned up and disposed of properly. 12-volt vehicle battery
Introduction to the topic
The 12-
volt vehicle battery is a component of
the electrical system and in event of the
high-voltage system failing, supplies the
safety-relevant systems of the vehicle with
energy. In the scope of maintenance work,
the 12-volt vehicle battery is checked and
where required, replaced.
You should only carry out work on the electri-
cal system if you know exactly how to per-
form the required tasks, are aware of the
general safety procedures and have access to
the correct equipment, service fluids and
suitable tools. Failing to carry out work cor-
rectly can cause serious injuries

x
Children should always be kept away
from electrolyte and the 12-
volt vehicle
battery.
x Always wear eye protection and protec-
tive gloves.
x Electrolyte is very aggressive. It can burn
the skin and can cause blindness. When
working with the 12-volt vehicle battery,
ensure that your hands, arms and face in
particular are protected from acid spill-
age.
x Do not smoke during the work, and nev-
er work near naked flames or sparks.
x When handling cables and electrical
equipment, avoid generating sparks and
electrostatic charge.
x Never short circuit the battery terminals.
x Never use a damaged 12-volt vehicle
battery. It can explode. Damaged 12-
volt vehicle batteries must be replaced
as soon as possible.
x Never use a frozen 12-volt vehicle bat-
tery. Discharged 12-volt vehicle batter-
ies can already freeze at temperatures of
around 0

Replacing the 12-volt vehicle battery
The 12-
volt vehicle battery has been devel-
oped to suit the conditions of its installation
location and has special safety features. If
a 12-volt vehicle battery has to be replaced,
discuss the electromagnetic compatibility,
size and necessary servicing, output and safe-
ty requirements for the new 12-volt vehicle
battery with a Volkswagen dealership before
purchase. The ventilation opening of the 12-
volt vehicle battery must always be on the
negative terminal side: the ventilation open-
ing on the positive terminal side must always
be sealed.
Only maintenance-free 12-volt vehicle bat-
teries compliant with the standards
TL 825 06 and VW 7 50 73 should be used.
These standards must be dated October 2014
or later.
Always have the 12-volt vehicle battery re-
placed by a qualified workshop, as the vehicle
electronics must be adapted as part of the
replacement process. Only qualified work-
shops have the technology required to carry
out this adjustment correctly. Volkswagen
recommends that the 12-volt vehicle battery
is replaced by a Volkswagen dealership.
Disconnecting the 12-volt vehicle battery
Please observe the following if the 12-volt
vehicle battery has to be disconnected from
the electrical system in the vehicle:

dimensions as the factory-fitted 12-volt
v
ehicle battery. WARNING
A highly explosive mixture of gases is given
off when the 12-
volt vehicle battery is be-
ing charged.
x 12-volt vehicle batteries should only be
charged in well-ventilated spaces.
x Never charge a 12-volt vehicle battery
which is frozen or has been frozen. Dis-
charged 12-volt vehicle batteries can al-
ready freeze at temperatures of around
0

12-volt vehicle battery
The indicator lamp lights up yellow. The fol-
lowing messages can be displayed: