Have you ever experienced the frustration of trying to unlock your Audi with your key fob, only to find out that it doesn’t work? You press the button repeatedly, but nothing happens.
You wonder if you left your car unlocked, or if someone stole it. You panic and curse, and wish you had a spare key.
In this article, we will show you how to fix your Audi key fob when it stops working, and how to prevent it from happening again.
How To Fix the Audi Key Fob Not Working Issue?
#1. Check the fob battery
The most common cause of the key fob not working is a dead battery. You can replace the battery by removing the cover of the key fob and inserting a new one.
Make sure the battery is inserted correctly and has good contact with the terminals. You can also use a volt meter to measure the voltage of the battery and see if it is within the recommended range.
#2. Reprogram the key fob
Sometimes, the key fob may lose its programming and need to be reprogrammed to work with your car. You can do this by following these steps:
1. Press the unlock button on your key fob.
2. Insert your key in the ignition and turn it to the ACC on position.
3. Immediately after, turn your key to the off position and remove it.
4. Press the unlock button on your key fob again.
#3. Check for water damage
If your key fob has been exposed to water or moisture, it may stop working properly. You can try to dry it out by placing it in a bowl of rice or silica gel for a few hours or days. You can also open the key fob and inspect it for any signs of corrosion or damage.
#4. Check for defective key fob
If your key fob is damaged or defective, it may not work at all. You can try to use another key fob that is compatible with your car and see if it works. If it does, then you may need to replace your original key fob with a new one.
#5. Check for receiver module issues
The receiver module is the part of your car that communicates with your key fob and unlocks or locks the doors.
If the receiver module is faulty or disconnected, it may not receive the signal from your key fob and prevent it from working.
You can check the fuse box of your car and see if there is any blown fuse that affects the receiver module. You can also use an OBD-II tool to scan for any trouble codes related to the receiver module.
#6. Check for signal interference
Sometimes, other devices or objects may interfere with the signal between your key fob and your car and cause it to not work.
You can try to move away from any sources of interference such as metal objects, electronic devices, radio towers, or other cars with remote keys.
You can also try to change the frequency of your key fob by pressing and holding both the lock and unlock buttons for a few seconds until you hear a beep.
#7. Check for unpaired keys requiring reprogramming
If you have a new or spare key fob that has not been paired with your car, you will need to reprogram it before you can use it.
You will need your vehicle identification number (VIN), your valet key, and a laptop with Ross-Tech software and VAG-COM cable. You will also need to follow a specific procedure to match your key fob to your engine immobilizer.
How to Prevent Your Audi Key Fob from Malfunctioning?
To avoid having to deal with a non-working key fob in the future, here are some tips on how to take good care of your key fob and prevent it from malfunctioning:
Replace your key fob battery regularly
A typical key fob battery lasts for about two to three years, depending on how often you use it.
To avoid running out of battery at an inconvenient time, you should replace your key fob battery every year or so, or whenever you notice a decrease in its performance.
Keep your key fob away from water, heat, and magnets
These can damage your key fob’s electronics and cause it to stop working.
Avoid leaving your key fob in direct sunlight, near radiators, in the washing machine, or near any magnetic devices such as speakers, phones, or laptops.
Store your key fob in a safe place
To prevent your key fob from getting lost, stolen, or damaged, you should keep it in a secure place when you are not using it.
You can use a key chain, a pouch, a case, or a drawer to store your key fob. You should also have a spare key fob in case you lose or break your main one.
Use your key fob properly
To ensure that your key fob works correctly and efficiently, you should use it as intended by the manufacturer.
You should press the buttons firmly and briefly, and avoid pressing multiple buttons at the same time. You should also avoid dropping or throwing your key fob, or using it as a toy or a tool.
Why is the Audi Key Fob Not Working?
#1. The key fob battery is dead or low
This can prevent the key fob from sending or receiving signals to or from the car. You can check the battery voltage or replace it with a new one.
#2. The key fob is out of range
The key fob has a limited range of operation, usually around 10 to 15 meters. If you are too far away from your car, the key fob may not work. You can try to get closer to your car and see if it works.
#3. The key fob is damaged or defective
The key fob may have some physical damage or internal malfunction that affects its functionality. You can inspect the key fob for any cracks, dents, or loose parts. You can also try to use another key fob that is compatible with your car and see if it works.
#4. The receiver module is faulty or disconnected
The receiver module is the part of your car that communicates with your key fob and unlocks or locks the doors. If the receiver module is faulty or disconnected, it may not receive the signal from your key fob and prevent it from working.
You can check the fuse box of your car and see if there is any blown fuse that affects the receiver module. You can also use an OBD-II tool to scan for any trouble codes related to the receiver module.
#5. The key fob is not programmed or paired with your car
The key fob needs to be programmed or paired with your car in order to work.
If you have a new or spare key fob that has not been paired with your car, you will need to reprogram it before you can use it. You can follow the steps mentioned in my previous response or consult a professional for assistance.
#6. There is signal interference or jamming
Sometimes, other devices or objects may interfere with the signal between your key fob and your car and cause it to not work. You can try to move away from any sources of interference such as metal objects, electronic devices, radio towers, or other cars with remote keys.
You can also try to change the frequency of your key fob by pressing and holding both the lock and unlock buttons for a few seconds until you hear a beep.
#7. There is a security system issue
Some Audi models have a security system that prevents the key fob from working if the car is locked with a mechanical key or if the alarm is triggered.
You can try to unlock your car with a mechanical key and deactivate the alarm by inserting the key in the ignition and turning it on.
Conclusion
Your Audi key fob is a handy device that makes your driving experience more convenient and enjoyable. However, if your key fob stops working, it can be frustrating and inconvenient.
Fortunately, you can fix most of the common problems with your key fob yourself by following the steps outlined in this article.
If you need more help or advice, you can always contact your local Audi dealer or a professional mechanic.
