2021 VOLKSWAGEN ID.4 ESP

x
Regularly update the appropriate anti-
virus program with the updates or up-
grades pro
vided by the provider.System update
Introduction to the topic
The factory-fitted central control unit sup-
ports the system update function. This allows
the software of almost all control units to be
updated by V

olkswagen AG without the need
to visit a qualified workshop:
If a system update is available for your vehi-
cle, a corresponding message will be dis-
played on the Infotainment system.
System updates are downloaded via the fac-
tory-fitted control unit with eSIM card (OCU)
and are free of charge. Volkswagen pays the
connection costs.
The system update function is only available
in some countries. A measure such as engine tuning to in-
crease perf

ormance or efficiency that
has not been performed by Volkswagen may
be deleted by a system update. Overview
Please refer to at the start of the chap-
ter on page 196.
A

vailability of a system update
The switched-on Infotainment system indi-
cates that a system update is available. A sys-
tem update takes place in two phases:

always using WPA2 encryption. Observe
country-specific requirements.
The necessary data transf
er may be
subject to charges. Due to the poten-
tially high volume of data in use, Volkswagen
recommends using a mobile phone tariff
which includes a data flat rate. For more in-
formation contact your mobile telephone
provider.
Depending on your mobile telephone
tariff, additional costs (such as roam-
ing charges) may be charged for loading and
using online data packages, especially if you
use these services abroad. Setting up a data connection
Wi-Fi

1. Touch to show the frequency band.
2.
Touch the marking, move on the fre-
quency band and release at the desired
frequency.
OR: touch a point on the frequency
band. The marking automatically jumps
to the corresponding frequency.
The station at the set frequency is set.
Selecting from station list (FM/DAB) and enter the name of the desired sta-
tion. The list of f

ound stations is auto-
matically updated during input.
OR: select the desired category to filter
stations according to a category.
2. Touch the desired station.
SCAN Searching in SCAN mode (FM/DAB) .
OR: touch and hold a station in the sta-
tion list.
3.

Touch .
OR: touch an already assigned station
button and hold f

or around 3 seconds.
The station is stored to the selected station
button.
If a station was already stored on the station
button, this station will be removed from the
station button and replaced by the new sta-
tion. Online functions in radio
mode
Please refer to and on page 218.
With some equipment le

vels, the Infotain-
ment system has online functions in radio
mode.
Internet Radio is an example of an online
function in radio mode.
Requirements for using online functions in
radio mode:
q The vehicle is equipped with We Con-
nect Start.
q We Connect Start is activated and the
vehicle is assigned to your user account.
q You have a data plan on the SIM-card of
your mobile device and have connected
Radio mode 233
11A012720AB

WARNING
Driving when the charge level of the high-
v oltage battery is too low can lead to the
vehicle breaking down when in traffic, and
can lead to accidents and serious injuries. The high-voltage battery can only be
charged at charging stations that meet
the requirements of the corresponding coun-
try and at least the f

ollowing standards:

oped. This also applies to engine oils in the
case of combustion engines. F or this reason,
service fluids and consumables should be re-
placed at a qualified workshop. Volkswagen
dealerships are kept up to date on all
changes. NOTICE
x Only use suitable service fluids f
or refilling.
Never use the wrong service fluid. Failure
to observe this warning can result in seri-
ous malfunctions and engine damage. Leaking service fluids can pollute the
en

vironment. Spilt service fluids must
be collected in suitable containers and dis-
posed of properly and in an environmentally
responsible way. Washer fluid

WARNING
Insufficient anti-freeze in the cooling sys-
tem of the v ehicle can cause the electric
drive to break down and thereby cause se-
rious injuries.
x The amount of correct coolant additive
used must be sufficient for the lowest
ambient temperature that you expect
the vehicle to be exposed to.
x Coolant can freeze at extremely cold
outside temperatures, causing the vehi-
cle to break down. Vehicle occupants
with inadequate winter clothing could
then freeze to death as the heating will
also no longer function. NOTICE
Never mix genuine coolant additives with
other coolants that ha
ve not been approved
by Volkswagen.
x If the liquid in the coolant expansion tank
is not pink (colouring results from mixing
the purple coolant additive with distilled
water) but for example brown instead of
purple, the suitable coolant has been
mixed with an unsuitable coolant additive.
The coolant must be changed as soon as
possible if this is the case. Failure to ob-
serve this warning can result in serious
malfunctions or damage to the electric
drive and cooling system. Coolant and coolant additives can pol-
lute the en

vironment. Spilt service flu-
ids must be collected and disposed of proper-
ly and with respect for the environment. Checking the coolant level
and refilling coolant
Please refer to , and on page 309
and at the start of the chapter on page
315. Fig. 179
Under the bonnet: markings on the
coolant e
xpansion tank. .
3.

Open the bonnet

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

dimensions as the factory-fitted 12-volt
v
ehicle battery. NOTICE
x Ne
ver connect or disconnect 12-volt vehi-
cle batteries when the electric drive is ac-
tivated. Never use a 12-volt vehicle bat-
tery that does not correspond with the ve-
hicle