Volkswagen Golf / Golf GTI / Jetta. Manual — part 473

47-38

Bleeding brake system with
brake filler and bleeder unit
VAS 5234, vehicles with ABS
Mark 60

The bleeding of the brake system

is described for brake filler and
bleeder unit VAS 5234

Special points regarding vehicles
with ABS/EDL, ABS/EDL/ASR and
ABS/EDL/ASR/ESP

When at least one chamber in the
brake fluid reservoir is completely
empty (e.g. leaks in braking system)
the hydraulic unit must be bled with
scan tool VAG 1551 in function
"basic setting".

Bleeding sequence ABS Mark 60

Page 47-40

Then the hydraulic unit must be bled
with scan tool VAG 1551 in function
"basic setting".

Introduction of basic setting

Connecting VAS 5051 and selecting
functions

Page 45-38

Special points regarding vehicles
with ABS/EDL/ASR/ESP

After bleeding the brake system

Page 47-40

perform a zero

compensation of the brake pressure
sender -1- -G201-.

Connecting VAS 5051 and selecting
functions

Page 45-38

- Then bleed brake system

Page

47-40

Brake system, bleeding

47-39

Once the bleeding sequence is
completed. Carry out a test drive
and perform at least one ABS
application when doing this.

WARNING!

Make sure that a filling pressure
of 1 bar (14.5 psi) is not exceeded,
when filling brake fluid using
brake filler and bleeder unit VAS
5234.

The brake fluid pressure must be

reduced to 1 bar (14.5 psi) on brake
filler and bleeder unit VAS 5234

Operating instructions VAS 5234

Note:

Use new brake fluid with part No.

B 000 700 A. (Enter container
size index for decimal point after
the A).

Brake fluid is poisonous. Brake

fluid must not come into contact
with paintwork as it is very
corrosive.

Brake fluid is hygroscopic, which

means it absorbs moisture from
the ambient air and should
always be stored in air tight
containers.

Rinse off brake fluid spillages, by

using plenty of water.

Brake system, bleeding

47-40

Special tools and equipment

Bleeding sequence

1 - Left front brake caliper

2 - Right front brake caliper

3 - Left rear wheel cylinder/brake
caliper

4 - Right rear wheel cylinder/brake
caliper

VAS 5234 Brake filler and

bleeder unit

- Connect brake filler and bleeder

unit VAS 5234.

- Open bleeder screws in the

prescribed sequence and bleed
brake caliper/wheel cylinder.

- With hose still connected, leave

the respective bleeder screw
open until brake fluid is free from
air bubbles out of the bleeder
screw.

Brake system, bleeding

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A test drive must be carried out after bleeding

brakes. When doing this an ABS application
must be performed at least once!

Changing brake fluid

Repair Manual, Maintenance; Work

descriptions; Changing brake fluid (every 2
years)

Pre-bleed the brake system when at least one

chamber in the brake fluid reservoir is
completely empty (e.g. leaks in braking
system).

Pre-bleeding sequence

1 - Bleed left front and right front brake calipers
simultaneously

2 - Bleed left rear and right rear brake calipers
simultaneously

- With hose still connected, leave the respective

bleeder screw open until brake fluid is free from
air bubbles flows out of the bleederscrew.

Brake system, bleeding