The Most Common Key Fob Repair Mistake Every Beginner Makes

The Most Common Key Fob Repair Mistake Every Beginner Makes

Key Fob Repair Service - 5 Common Reasons Your Key Fob Won't Work

It can be a frustrating experience when your key fob breaks down. Most fob problems can be solved at home by an auto locksmith or are not urgent.

First, examine the fob of your key to determine if it has any physical damage or an inoperative battery. Then, you can reset the fob following the instructions in your owner’s manual.

Dead Key Fob Battery

Key fobs allow you to open and start your vehicle without having to fiddle using your keys. Many models can even unlock doors, hatchbacks and trunks with the push of one button. Although the battery of your key fob is dead, it may seem like a huge problem, it's actually one of the most simple issues to solve. Many car owners know that they can go to a dealership or repair shop for help but did you know that you can also try to fix your own fob at home?

The first thing you'll need is a fresh, new CR2032 battery. Most hardware stores sell them in multipacks. Then you can use an flathead screwdriver or watch to pry the case of the fob. Once you've opened the first gap, you can make use of your tool to further open the case. Be gentle in order not to damage the fob, or its circuit board.

When you've got the case open, put the battery you just purchased under the tabs highlighted by yellow arrows in this image. Be sure to place the battery over the two tabs that are indicated by the green arrows. Once the new battery is in place, close your key fob and test it. If the key fob still doesn't function, you may require the assistance of an expert for more detailed troubleshooting.

In rare cases replacing a battery on the keyfob could result in a malfunctioning device. In this case there's probably a problem with the vehicle or the fob. It's a good idea to keep a spare key fob on hand so you can be prepared when the original battery is dead or a problem occurs.

In addition to battery replacement, you can ask an expert to examine and make other key fob repairs. They can look for damage to buttons, contacts and other parts and perform reprogramming and synchronization if your vehicle is having a difficult communication with your key fob.

Key Fob Battery Damage

The majority of key fobs are powered by a small battery that powers their internal components. This includes the buttons that turn on the antenna and chip for releasing a radio frequency. The battery also powers the plastic casings to protect these components. Your key fob won't function if the battery is dead. The solution is easy and inexpensive: simply replace the battery. Many manufacturers have directions in their owner's manuals on how to change the key fob battery. It's not a difficult task and you'll save money by doing it yourself instead of taking the fob to an auto or dealer shop.

If your key fob still not working after replacing the battery, you could have a different problem. Check the key fob to determine if there are any physical damage, like cracks or dents. You can also open the case and inspect the circuit board for signs of corrosion or other issues. If  car key fob repairs  at ease, use a cotton ball coated with alcohol to clean the contact points on the circuit board of the key fob. This will remove corrosion without causing damage to the fob.

Key fobs must also be programmed to connect to the vehicle's receiver. This is to ensure that only people with keys for the same vehicle can unlock the car, and to keep other key fobs out of trying to gain access to vehicles they were not designed for. If you've recently had your key fob repaired or replaced, or if it has been in use for a long time the transmitter and receive may have been disconnected.

You can test this using a spare remote that you have. This will help you determine whether the issue is with the keyfob or with the electrical systems of your vehicle. A mechanic can help you fix the problem by reconnecting any disconnected wires. Alternately, you could try to connect the key fob to an alternative receiver in your vehicle and see if that resolves the problem. If you are unable to connect your key fob to another receiver in your vehicle, you may need to take it to a car dealership or auto repair shop to get more precise repairs.

Damaged Key Fob Transmitter

When your car key fob fails to function, it can be a major hassle. Fortunately, most car key fobs can be repaired with only a few steps. Check the fob to see whether it's got any physical damage, and ensure that it is not just dead. A new battery might be all that's needed but if it's not enough to solve the issue, it could be a more serious issue with the fob transmitter.

Car key fobs contain a lot of moving parts, so it's normal for them to undergo wear and tear over the course of time. A damaged transmitter could stop you from starting your car or unlocking the doors. A damaged transmitter could also interfere with radio signals sent from your key fob to the receiver inside your car. Bring your key fob to a professional for repair and inspection in the event that you believe that the transmitter is damaged.

Batteries are usually the reason of a key fob that isn't working. Key fob batteries last between 3 and five years. It is best to replace them on a regular basis.

The majority of people can change the battery on the case of a key fob in their home. All you require is a screwdriver with a flat head to open the case, and then replace the battery with a brand new one. Most key fobs are powered by 3V button cells that are sold at most auto parts stores.

Another reason that your key fob won't respond is due to a defective receiver. This can be a frustrating issue, since it typically occurs when you're driving. If you notice that your key fob isn't receiving an alert from your vehicle, try putting it inside the driver's door lock.

A damaged receiver can also cause your key fob to act erratically, such as by turning off or locking the vehicle when you press one of its buttons. Try using a spare keyfob to see if the vehicle will respond. If you don't have an additional key fob, you can call your dealer to request service. If your current key fob is still in warranty, a few dealerships selling new cars may be able to offer a replacement for free.

Damaged Key Fob Receiver

Key fobs are great convenience tools that let us lock or unlock our vehicles, they are vulnerable to a myriad of issues. If the remote key fob in your car isn't working correctly it's likely that you need to contact a locksmith or auto dealer. Many common key fob problems can be easily fixed without the need to purchase an expensive replacement. Here are five of the most frequent reasons your key fob may not be functioning:

Key Fob Needs Re-Programming

Over time, the key fob transmitter and receiver can get out of sync with one other. To fix this problem it is necessary to re-synchronize your key fob and receiver by following the reprogramming guidelines for your car. You can find these instructions in the owner's manual, or ask your local dealer for assistance.

If the re-programming of your key fob fails to solve the issue, there may be other issues or interference to your key fob or its receiver. It's usually simple to fix if you take off your key fob and take a close look inside. Look for indications of damage such as cracks in the circuit board, tiny electronic components that aren't completely connected to the circuit board or bent or damaged battery contacts. You can repair the key fob if you find any of the above.


The best solution for you will depend on your budget and ease of use. If your key fob was damaged by a fall or other forms of physical damage, it may be easier and more affordable to replace it by a professional. In any case, make certain to take care of your key fob so it can provide you with years of trouble-free operation. By regularly cleaning it and avoiding exposing it extreme temperatures or electromagnetic fields you can ensure it will last for the longest time possible. In addition, by choosing an expert who has plenty of experience working with your particular vehicle's make and model you can be sure that your key fob will perform exactly as you intended it to.