Electro-Mechanical Parking Brake Actuator: Installing

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 Audi S4, 2013 Audi A4, 2012 Audi S4, 2012 Audi A4, and 2011 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

-- Install new seal.

-- Turn the brake caliper adjuster screw -1- back slightly.

Fig 1: Turning Brake Caliper Adjuster Screw

Courtesy of AUDI OF AMERICA, LLC

NOTE:

This makes it easier to install the actuator.

-- Position the actuator.

NOTE:

Make sure that the seal is seated correctly.

-- Item -2- Then rotate actuator so bolt hole -a- and threads in brake caliper housing -b- are brought into alignment.

Fig 2: Aligning Actuator And Threads In Brake Caliper Housing

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Make sure that parking brake actuator is seated flush against the brake caliper.

-- Attach both actuator bolts (Torx 30).

Fig 3: Installing Actuator Bolts

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Position the motor bolts by hand and screw in a few turns. If threads are damaged, entire brake caliper must be replaced!

-- Tighten the motor bolts. Tightening specification, 12 Nm

-- Connect the connector to the motor.

NOTE:

Only insert connector by hand to avoid damaging it.

Make sure that connectors on vehicle side and actuator side are free of dirt and damage.

-- Install the motor in the bracket.

-- Install the wheels, refer to 44 WHEELS, TIRES, WHEEL ALIGNMENT .

NOTE:

After replacing actuator, basic setting 006 must be performed with the vehicle diagnostic tester in the EPB function.

-- Connect the vehicle diagnostic tester to the 16-pin diagnostic connector in the vehicle with the ignition switched off.

Fig 4: Connecting Diagnostic Cable VAS 5051/5A To Diagnostic Connector

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Ignition on

Parking brake released.

Coding check and reported if necessary.

DTC memory interrogated, errors shown corrected and DTC memory erased.

-- Select function "053 - Parking brake".

-- Select the function "006 - Basic setting".

-- J540 - Electro-Mechanical Parking Brake Control Module

-- J540 - Basic setting (3 electrical parking brake function test).

-- Press the green arrow button at the bottom on the left side to exit the entry template.