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Hydraulic Unit With Control Module, Removing And Installing: Notes

Special tools and workshop equipment required 

NOTE: To remove the hydraulic unit with control module, loosen the coolant expansion tank and secure it at the side. Do not open the coolant hoses.

The hydraulic unit -2- with the control module -3- and electric connection -1- is inside the engine compartment, in the front and on the left side under the coolant reservoir.

Fig 1: Identifying Hydraulic Unit And Control Module
GWWA45-10138Courtesy of AUDI OF AMERICA, LLC