NHTSA Complaint #11462527 — 2009 VOLKSWAGEN GTI

I recently purchased this used car and discovered that there is a recall on it. I made an appointment for the recall service. Prior to the appointment, the ABS warning light came on while driving the car. I took the car to University Volkswagen. They charged me for a diagnostic on the ABS system and have advised that the ABS module needs to be replaced and that I must have that done, before they can address the recall. I asked the service advisor if the issues with the ABS system were due to the recall issue, and he told me it was difficult to say. I escalated the issue, and they still tell me that I have to pay $3000 to replace the ABS module before they can do the recall work. It seems that if the ABS failure is due to the recall, that it should not be up to me to pay for the ABS module so that they can test the ABS module. Can you please help me with this situation, or advise me what steps to take next?