How to fix a malfunctioning keyless entry system in an Audi Q5?

My Audi Q5's keyless entry system has suddenly stopped working. I've tried changing the batteries in the key fob and also reprogramming it, but it still won't work. What could be the issue and how can I fix it?

Firstly, make sure the key fob is not damaged or wet. If it is, then it's likely the issue lies with the fob itself. If not, try reprogramming the key fob again by following the instructions in your Audi Q5's manual. If that still doesn't work, it's possible that the keyless entry system's receiver in your car may be faulty. In that case, it's best to take your car to an authorized Audi dealership for further diagnosis and repair.

You can also try replacing the keyless entry system's battery located in the driver's door handle. If that doesn't work, then there may be a problem with the system's antenna or wiring. It's best to have a professional Audi technician take a look at it to pinpoint the exact issue and provide a solution.