ID.4 2021 ➤, ID.5 2021 ➤
Maintenance - Edition 11.2021
Recommended brake fluid level, brake pads new or well within
wear limit:
•
Between MIN and MAX markings
Note
If the fluid level is below MIN. marking -2-, the brake system
must be checked for leaks before fluid is topped up, “Repair
measure”.
4.12
Front brake discs and rear drum brake
pads: checking thickness of pads and
condition of discs
Front disc brake pads: checking thickness ⇒ page 39
Rear drum brake pads: Checking thickness ⇒ page 40
Brake discs: checking condition ⇒ page 41
Special tools and workshop equipment required
♦ Torque wrench
♦ Battery lamp -VAS 6901-
♦ Mirror
The adapter to loosen and tighten the anti-theft wheel bolts can
be found in the vehicle tool kit ⇒ page 51 .
4.12.1
Front disc brake pads: checking thick‐
ness
Note
One some vehicles it may be very difficult to ascertain or meas‐
ure the thickness of the pad due to the geometry of the wheel
rim. If this is the case, remove the wheel on the side where
the brake pad wear indicator is installed for better evaluation or
measurement of the remaining pad thickness.
Procedure
– Measure outer and inner brake pad thickness by inspecting
through the holes of wheel rim (depending on type).
– For better evaluation or measurement of remaining pad
thickness, remove wheel on side where brake pad wear indi‐
cator is installed as necessary.
– Pull off wheel bolt covers if necessary ⇒ page 51 .
4. Descriptions of work
39
ID.4 2021 ➤, ID.5 2021 ➤
Maintenance - Edition 11.2021
– Mark position of wheel relative to brake disc.
– Unbolt wheel bolts and remove wheel.
– Measure inner and outer pad thickness.
a - Pad thickness “without” backplate
Wear dimension: 2 mm
Note
♦ The brake pads have reached their wear limit at a pad thick‐
ness of 2 mm (without backplate) and must be renewed
(repair measure).
♦ When replacing brake pads, always check brake discs for
wear as well. Checking and if necessary replacing the brake
discs is a repair measure.
Procedure
– Check brake disc for wear ⇒ Brake system; Rep. gr. 46;
Front brake; Assembly overview - front brake.
– If necessary, secure wheel in marked position.
– Tighten wheel securing bolts in diagonal sequence to speci‐
fied torque ⇒ page 51 .
– Place adapter in vehicle tool kit after completing work.
– Fit wheel bolt covers if necessary .
4.12.2
Thickness of rear drum brake pads:
checking
– Remove plug -1-.
40
4. Descriptions of work
ID.4 2021 ➤, ID.5 2021 ➤
Maintenance - Edition 11.2021
– Using an electric torch, check thickness -a- of drum brake
pad (without backplate) through the hole -1-.
♦ Wear dimension: 1 mm
– Make sure that brake shoes are not smeared with brake fluid
or grease.
– Replace plug -1- after checking.
Note
At a pad thickness of 1 mm, the brake shoes have reached their
wear limit and must be renewed (repair measure).
Procedure
Renewing rear brake shoes: ⇒ Brake system; Rep. gr. 46; Rear
brake; Removing and installing brake shoes.
4.12.3
Brake discs: checking condition
Check all brake discs for the following damage patterns:
♦ Cracks
♦ Scoring
♦ Rust (no surface rust)
♦ Burrs on circumference of brake disc
Note
Inform the customer if brake disc damage is similar to these
damage patterns. Renewing the brake discs is a repair meas‐
ure.
4. Descriptions of work
41
ID.4 2021 ➤, ID.5 2021 ➤
Maintenance - Edition 11.2021
4.13
Electric windows: checking positioning
(open and close functions)
Note
The automatic opening and closing features for the electric
windows do not function after disconnecting and reconnecting
the battery. Therefore, before a new vehicle is delivered, the
window regulators must be reactivated. Once the windows have
been reactivated, the battery must not be disconnected again.
CAUTION
After batteries have been disconnected and reconnected the
roll-back function of the electric window regulators is disabled.
Severe pinching injuries could result!
– Reposition window regulator.
Carry out the following procedure to position the electric window
regulators:
Note
The following work description applies to the front left window
regulator. Reactivate the other window automatic functions in
the same manner by operating the respective switch in the
driver door.
– Switch on ignition.
– Close all doors and windows completely.
– Pull up button for window regulator and hold in this position
for at least one second.
– Release button, pull it up again and hold.
The one-touch opening and closing function is now ready for
use.
Note
It is possible to re-establish the position of one or more window
regulators at the same time.
– Switch off ignition.
4.14
Fault memory of all systems: reading
with vehicle diagnostic tester, correct‐
ing possible faults according to repair
guidelines
– Read event memory ⇒ page 12 .
– Repair all faults according to repair guidelines.
Static faults
If one or more static faults are found in the event memory,
we recommend seeking agreement from the customer to rectify
these faults using Guided Fault Finding.
42
4. Descriptions of work
2024 VW ID.4 Owner's Manual
