How can I fix my Audi A6's malfunctioning keyless entry system?

The keyless entry system on my Audi A6 has been acting up recently. When I approach the car, it doesn't unlock automatically like it used to. I've already tried changing the batteries in the key fob, but it still doesn't work properly. What steps can I take to troubleshoot and fix this issue?

First, try re-synchronizing your key fob with the car's receiver. Consult your owner's manual for specific steps on how to do this. If that doesn't work, there may be a malfunction with the receiver and it will need to be replaced by a certified mechanic.

You may also want to check the fuse box for any blown fuses related to the keyless entry system. A blown fuse could be the cause of your issues.