Audi A8 2003 Workshop Manual page 35

Note
Clean the hydraulic unit carefully before removal.
♦
Before removing the control unit, interrogate the fault memory
♦
and print out any fault codes that are displayed.
Place the hydraulic unit together with the control unit on a
♦
clean flat surface.
Renewal may only be performed by qualified personnel with
♦
adequate technical expertise.
Removing and installing hydraulic unit
– Slacken bolts -1- and pull control unit -2- off hydraulic unit,
taking care to keep it straight.
– Clean sealing surface -2- using a plastic scraper -1-. Check
valves -3- for damage.
WARNING
Sealing surface of hydraulic unit must be clean and flat.
The hydraulic unit must be renewed if the sealing surface or
the contact pins are damaged.
The seal on the control unit cannot be replaced.
The seal on the control unit must not be lifted or pulled out.
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permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Note
Use the cleaning agent provided (do not use any aggressive
♦
cleaning products).
Check sealing surface for damage (visual inspection).
♦
Assembling
Caution
Make sure that no moisture or dirt gets inside the control unit.
Do not blow out control unit or hydraulic unit with compressed
air.
Severe shocks or jolts can damage the control unit. The control
unit must not be re-installed if it has been damaged in any way.
⇒ page 24
Audi A8 2003 ➤
Brake system - Edition 03.2013
3. Electronic stabilisation program Bosch 5.7
29