Changing rear brake pads on vehicles equipped with electronic parking brakes (EPB) requires specific procedures. This guide provides detailed instructions on how to use VCDS (Vag-Com Diagnostic System) to safely change rear brake pads on VW, Audi, Seat, and Skoda vehicles with EPB. Failing to follow these steps can lead to system errors and potential brake malfunctions.
Opening the Rear Parking Brake with VCDS
Before beginning, ensure all rear brake components are fully assembled. Connect a battery charger according to your vehicle’s repair manual and cycle the parking brake ON and then OFF. This preliminary step ensures the system is ready for the procedure.
-
Access Basic Settings: Connect your VCDS interface to the vehicle’s OBD-II port and launch the software. Navigate to [Select], then [53 – Parking Brake], and finally [Basic Settings – 04].
-
Initiate Lining Change Mode: Select “Start lining change mode” and click [Go!]. This command instructs the EPB motors to retract the caliper pistons, providing clearance for pad replacement. Wait for the confirmation message “Finished Correctly.” Once confirmed, click [Stop], then [Done, Go Back], and finally [Close Controller, Go Back – 06].
-
Important Note: Turn the ignition OFF and keep the battery charger connected. The caliper pistons will remain retracted. You will need a specific brake caliper tool to compress the pistons back into the caliper bore before installing new pads. It’s normal for the parking brake warning light to flash during this service mode, indicating the parking brake is disabled. Do not operate the EPB switch or proceed to the closing procedure until the new brake pads and all components are properly reassembled.
Closing the Rear Parking Brake with VCDS
After installing the new rear brake pads and ensuring all components are correctly reassembled, connect the battery charger as before.
-
Access Basic Settings: Using VCDS, navigate back to [Select], [53 – Parking Brake], and [Basic Settings – 04].
-
Initiate Closing Procedure: Select “End lining change mode” and click [Go!]. The EPB system will now close the calipers and reset to its normal operating state. The result may display “Not Running” or “Finished Correctly.” Once completed, click [Stop], then [Done, Go Back], and finally [Close Controller, Go Back – 06].
-
Final Steps: Cycle the parking brake ON and then OFF using the vehicle’s parking brake switch while depressing the brake pedal. This ensures proper functionality. Before a test drive, use VCDS to check for any fault codes that may have occurred during the procedure.
Following this VCDS guided procedure for changing your rear brake pads will help ensure the electronic parking brake system functions correctly and safely. Always consult your vehicle’s repair manual for specific torque specifications and safety precautions. Remember, accuracy is crucial when working with brake systems.
