Audi Key Fob Not Working (Quick Solutions)

Audi Key Fob Not Working

Have you ever wondered why Audi key fob is not working and how to fix that? Well, we got you covered.

Whether you’re a new Audi driver or a long-time fan, the convenience of keyless entry and remote start provided by your Audi key fob is unparalleled. However, there may come a time when your key fob stops working, leaving you unable to unlock or start your car remotely.

This can be frustrating and inconvenient, but fear not! In this comprehensive guide, we will explore 10 easy fixes to get your Audi key fob working again.

Let’s dive into each of these issues and explore the solutions in detail.

1. Dead Battery

One of the most common reasons for an Audi key fob not working is a dead battery. The battery in your key fob can last for around 2-3 years, depending on the brand and usage.

When the battery is nearing the end of its life, you may notice a decrease in the key fob’s range and unresponsiveness of the lock, unlock, and remote start buttons.

Solution: To fix this issue, you need to replace the dead battery with a compatible one that matches the size, voltage, and specifications of your Audi key fob. Refer to the official Audi website for the specific details of your key fob and purchase a compatible battery.

Once you have the new battery, follow the manufacturer’s instructions to safely replace the old battery with the new one.

2. Battery Not Inserted Properly

Sometimes, the key fob may not work because the battery is not inserted properly. The coin-shaped battery has a positive and negative pole, and if it is inserted the wrong way, the key fob will not function.

Solution: To resolve this issue, open the key fob and ensure that the battery is correctly placed with the positive and negative sides aligned.

If the key fob still doesn’t respond after correcting the battery placement, follow the next steps.

3. Loose Battery Connections

With usage and battery replacements, the clips inside the key fob may become loose, resulting in poor battery connections.

When the battery connections are not secure, the circuit is incomplete, causing the key fob to malfunction.

Solution: To fix this issue, open the key fob and check if the battery is loose in the hub. If it is, insert a small piece of paper behind the clip to create a tight connection between the battery and the clip.

Once the connection is secure, close the key fob and test if it is working properly.

4. Dead 12 Volt Battery of Audi

In some cases, the issue may not lie with the key fob itself, but with the 12-volt battery of your Audi. If your car’s battery is old or not properly maintained, it can cause various electrical problems, including key fob unresponsiveness.

Solution: Have your car’s battery checked by a professional at a service center. They will diagnose any issues with the battery, such as loose terminals or low gravity, and rectify them.

In severe cases, you may need to replace the battery with a new one.

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5. Water Damage to the Key Fob

Water damage can occur if the key fob is exposed to moisture, such as rain or accidental submersion in water.

Even though Audi key fobs are designed to be water-resistant, if the seals are broken or the fob is not closed properly after battery replacement, water can enter and damage the internal components.

Solution: If your key fob has been exposed to water, open it and remove the battery. Clean the components with a soft cloth if they have been dropped in water. If the key fob has been exposed to any other liquid, use isopropyl alcohol to clean the components and let them dry for at least 2 hours.

Reassemble the key fob and test if it is functioning properly. If not, consult an expert or consider purchasing a new key fob.

6. Faulty Receiver of your Audi

If your key fob is new and working fine, but your car is not responding to its commands, it could indicate a problem with the receiver module in your Audi. The receiver module may fail to recognize the signals from the key fob, resulting in unresponsiveness.

Solution: Consult a professional technician who can diagnose the fault by checking error codes and identifying the malfunctioning area.

They will be able to repair or replace the faulty receiver module to restore the functionality of your key fob.

7. Faulty Immobilizer of your Audi

The immobilizer in your Audi is an anti-theft system that prevents unauthorized attempts to start the car. If your key fob is working fine but the car is not remotely starting, it could be due to a faulty immobilizer.

Solution: Have the immobilizer system diagnosed using an OBD tool. The OBD tool will provide error codes that can pinpoint the exact location of the malfunction.

A technician can then address the issue and restore the functionality of your key fob.

8. Signal Interference

Signal interference can disrupt the communication between your key fob and your Audi. This interference can be caused by poor weather conditions or strong radio signals in the vicinity of your car.

Solution: In cases of signal interference, it is recommended to manually start your car and park it away from sources of electromagnetic interference.

This can help minimize the impact of signal disruptions on your key fob’s functionality.

9. Key Fob Require Reprogramming

Sometimes, after a battery replacement, the key fob loses its connection with the car and needs to be reprogrammed. Reprogramming your key fob will establish the connection between the key fob and your Audi.

Solution: To reprogram your key fob, you will need an OBDII Scanner. If you are not familiar with the process, it is advisable to seek assistance from a technician who can help you properly reprogram your key fob.

10. Resetting the Key Fob System

In some cases, a bug in the key fob system can cause unresponsiveness. Resetting the key fob system can help resolve this issue.

Solution: Resetting the key fob system is a vehicle-specific process. However, you can try a general reset by disconnecting the 12-volt battery of your Audi.

First, open the hood and locate the 12-volt battery. Disconnect the negative terminal followed by the positive terminal.

Turn on all electrical equipment, such as headlights and horn, for a few minutes to drain any residual current. After 10 minutes, reconnect the positive terminal followed by the negative terminal.

Audi Key Fob NOT WORKING FIX | Audi Key Problem >> Check out the video below:


Experiencing a non-functional Audi key fob can be frustrating, but with these 10 easy fixes, you can get your key fob working again in no time. From replacing the battery to addressing receiver or immobilizer issues, these solutions cover a range of potential problems.

If you encounter persistent issues, it is always recommended to consult a professional technician who can provide expert assistance.

Keep these troubleshooting tips in mind, and you’ll be back on the road with your fully functional Audi key fob.

Steve P.

Steve is an automotive technician, technical writer, and Managing Editor. He has held a lifelong passion for cars, with a particular interest in cars like the Buick Riviera. Steve is based in Boise, Idaho.

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