VOLKSWAGEN ID.4 2020 Owner´s Manual

Brake fluid specification
V
olkswagen has developed a brake fluid that
has been optimised for the brake system in
the vehicle. To ensure the best possible oper-
ation of the brake system, Volkswagen ex-
pressly recommends the use of brake fluid
compliant with VW standard 501 14.
Before using a particular brake fluid, check
that the specifications printed on the con-
tainer correspond to the vehicle require-
ments.
Brake fluid that is compliant with VW stand-
ard 501 14 is available from Volkswagen
dealerships.
If this brake fluid is not available and it is
necessary to use another high-quality brake
fluid instead, brake fluid that is compliant
with DIN ISO 4925 or US standard
FMVSS 116 DOT 4 CLASS 6 can be used.
Not all brake fluids that are compliant with
DIN ISO 4925 or US standard FMVSS 116
DOT 4 CLASS 6 have the same chemical com-
position. Some of these brake fluids may con-
tain chemicals that can damage or destroy
brake system components over time.
Volkswagen therefore recommends the use
of brake fluid that is compliant with
VW standard 501 14 to ensure sustained op-
timal operation of the brake system.
Brake fluid that is compliant with VW stand-
ard 501 14 fulfils the requirements of
DIN ISO 4925 or US standard
FMVSS 116 DOT 4 CLASS 6.
Brake fluid level
The brake fluid level must always be between
the MIN and MAX markings on the brake fluid
reservoir

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:

Wheels and tyres
Tyre monitoring system Introduction to the topic
The tyre monitoring system warns the
driv
er when the tyre pressures are too
low.
The following tyre monitoring systems are
available for this vehicle:
Tyre Pressure Loss Indicator

The rolling circumference can change:

OR: to cancel the operation, touch
Cancel . The current tyre pressure is not
sa
ved and the system will not be re-
synchronised.
After an extended driving time (at least 20
minutes) with driving at different speeds, the
system will automatically learn the new val-
ues and monitor them. Troubleshooting for Tyre
Pressure Loss Indicator
Please refer to at the start of the chap-
ter on page 325. Low tyre pressure
The indicator lamp lights up yellow.
There is a loss of pressure in one or more
tyres or the tyre is structurally damaged.

fied workshop and check and correct the
tyre pressure