Page 1 of 11
47-23
Brake hydraulic system,
bleeding and changing brake
fluid
WARNING!
Brake fluid is poisonous.
It must NEVER be removed by siphoning
with your mouth.
If brake fluid contacts skin or eyes, flush or
wash adequately to prevent irritation. Get
medical attention immediately if necessary.
Brake fluid must be disposed of properly in
compliance with environmental regulations.
CAUTION!
Do not allow brake fluid to mix with liquids
that contain mineral oils (e.g. motor oil,
cleaning agents). Mineral oils damage the
plugs and seals in the brake hydraulic
system.
Brake fluid must not be allowed to come into
contact with paintwork due to its caustic
effect.
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11/20/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.47.5
Page 2 of 11
Brake fluid is hygroscopic, in other words it
absorbs moisture from the surrounding air,
and must therefore always be stored in
airtight containers.
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11/20/2002 htt
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Page 3 of 11
47-24
Note:
Only use new brake fluid conforming to US
standard FMVSS 116 DOT 4.
Genuine VW/Audi brake fluid conforms to this
specification.
Rinse off any spilled brake fluid using plenty of
water.
When the system is open do not work with
compressed air and do not move the vehicle.
During the final road test, make sure at least
one ABS-controlled braking operation is carried
out (normal pulsations must be felt at the brake
pedal).
Bleeding using US1116 brake bleeder
- Connect US1116 brake bleeder.
- Open bleeder screws in following sequence and
bleed brake calipers.
Bleeding sequence
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11/20/2002 htt
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pair&id=AUDI.B5.SU03.47.5
Page 4 of 11
1 - Right-rear brake caliper
2 - Left-rear brake caliper
3 - Right-front brake caliper
4 - Left-front brake caliper
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Page 5 of 11
47-25
Brake fluid, changing (every two years)
WARNING!
Brake fluid is poisonous.
It must NEVER be removed by siphoning
with your mouth.
If brake fluid contacts skin or eyes, flush or
wash adequately to prevent irritation. Get
medical attention immediately if necessary.
Brake fluid must be disposed of properly in
compliance with environmental regulations.
CAUTION!
Do not allow brake fluid to mix with liquids
that contain mineral oils (e.g. motor oil,
cleaning agents). Mineral oils damage the
plugs and seals in the brake hydraulic
system.
Brake fluid must not be allowed to come into
contact with paintwork due to its caustic
effect.
Brake fluid is hygroscopic, in other words it
Pa
ge 5 of 11 Brake h
ydraulic s
ystem, bleedin
g and chan
ging brake flui
d
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.47.5
Page 6 of 11
absorbs moisture from the surrounding air,
and must therefore always be stored in
airtight containers.
Pa
ge 6 of 11 Brake h
ydraulic s
ystem, bleedin
g and chan
ging brake flui
d
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.47.5
Page 7 of 11
47-26
Note:
Only use new brake fluid conforming to US
standard FMVSS 116 DOT 4.
Genuine VW/Audi brake fluid conforms to this
specification.
Rinse off any spilled brake fluid using plenty of
water.
When the system is open do not work with
compressed air and do not move the vehicle.
During the final road test, make sure at least
one ABS-controlled braking operation is carried
out (normal pulsations must be felt at the brake
pedal).
Repair Manual, "ABS/EDL/ASR On Board
Diagnostic (OBD)," Repair Group 01
Changing brake fluid using US1116 brake
bleeder
- Open brake fluid reservoir.
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11/20/2002 htt
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Page 8 of 11
Note:
The brake fluid reservoir must be kept
adequately filled to prevent air from entering the
brake system through the reservoir.
- With engine running and bleeder screw on right-rear brake caliper
open, use brake pedal to pump brake fluid out of reservoir until level
goes down as far as opening for hydraulic clutch supply hose.
- Collect used brake fluid in suitable container, then close bleeder screw.
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pair&id=AUDI.B5.SU03.47.5
