A8 Quattro Sedan V8-4.2L (BVJ) (2008)
Electronic Brake Control Module: Service and Repair
ABS Control Module
Removing
Only disconnect control module from hydraulic unit when removed.
‹› Carefully clean hydraulic unit before removing.
‹› Before removing control module, read out DTC memory and print out fault code if necessary.
‹› Place hydraulic unit with control module on a clean, level surface.
‹› The replacement should only be done by trained personnel.
Remove hydraulic unit. Refer to => [ Hydraulic Unit, Bosch 5.7 ] See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Hydraulic Control Assembly - Antilock Brakes/Service and Repair.
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Loosen bolts - 1 - and remove control module - 2 - from hydraulic assembly without tilting.
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Clean sealing surface - 2 - using a plastic scraper - 1 -. Check valves - 3 - for damage.
The sealing surface on the hydraulic assembly must have a clean, even surface.
If the sealing surface or contact tags are damaged, hydraulic assembly must be replaced.