Why Is Fob Key Repair So Popular? Key Fob Replacement and Repair

Key fobs on modern vehicles do a lot of work and are subject to lots of abuse. In many cases just a simple replacement or repair is all that's required to bring them back into working order.

Most fobs use flat-watch-style batteries that are easy to find in hardware stores and auto parts retailers. Before calling a professional, you can do some of the DIY fixes.

Dead Key Fob Battery

The battery in the key fob's remote powers your remote in your car, and in push-to-start cars it will start your engine. It is therefore crucial to maintain a functional, healthy battery. A dead key fob is an issue for anyone on-the-go. The good news is that a simple, inexpensive replacement is able to fix the issue quickly.

The loss of range and signal strength are among the most common indicators that a battery in a keyfob is dying. You might also find that the buttons on your fob don't work or require extra effort to be activated.


A new key fob can be found in the auto part section of a large retailer or on the internet. Typically, these batteries are CR2032 and CR2025 and are available in packs of 2 or more. Consult your owner's guide before you shop for the right battery. Certain vehicles require a certain size or type of battery that isn't always available at big-box retailers So, make sure you be aware of the correct specifications before you buy.

Typically, the battery is located in the back of your key fob. It can be removed by prying the case open using the flat-blade screwdriver. It is usually shaped like an ordinary coin and will be labeled with the battery size. Make sure to note the way the plus and minus symbols are placed to ensure that the new battery is positioned correctly. After the replacement battery has been installed, gently snap the two pieces of the fob together and test all of the buttons to ensure they work.

It's important to note that in the event that your key fob continues to stop functioning even after a battery replacement, it might be deprogrammed. In this scenario, you'll need to contact an expert locksmith which will cost a little more than simply replacing the battery in your key fob.

Our skilled mechanics at YourMechanic can repair your key fob if it's damaged or the battery is dead. Set up an appointment to review the range of services we offer in your area.

Weak Signals

If you find that your key fob isn't responding to buttons on the remote, this can be an indication of a problem with signaling. Your car and key fob are dependent on radio signals to communicate, therefore weak or inconsistant signals can cause poor range and performance.

Examining the battery level of your fob is a good idea since it can affect the sensitivity of the signal. It's also worth resetting the fob's settings that can help bring back an even and consistent response from the car. The process varies from vehicle to vehicle, so the owner's manual or call to the helpline of the manufacturer is likely to be the best guide here.

Other factors can contribute to weak fob signals, such as interference from other devices that operate on the same frequency as your key fob. Power lines and other key fobs wireless communication devices, and even cell networks can disrupt the RF (radio frequency) signals that your key fob utilizes to connect to the receiver inside your vehicle.

Finally physical damage to your key fob could hinder the transmission of RF signals which may result in poor range and performance. A blown fuse, damaged or cracked button, or a bent case of the fob can all affect the signal transmission and cause the remote not to function properly.

There are some simple steps you can take to try and fix the problem of weak fob signals such as resetting the fob's settings or changing the battery. If your fob is worn out, it's probably the time to replace it all over again.

Don't forget to utilize the spare remote that came with your car in the event that your primary remote starts to fail. It's worth trying this solution to see if it can solve the issue before you invest in a new one. In this case it may be the right time to contact an expert auto-locksmith. They can identify the issue and suggest the best course of actions.

Physical Damage

Key fobs may have issues from time to time. Luckily, the majority of these problems are not serious or complex and can be resolved with a few easy steps. It's also a good idea to have spare batteries or even an additional fob in case one of your keys ceases to function.

The most frequent reason for car keys not working is an inactive battery. These small devices rely on tiny lithium-ion coin or button cell batteries to function. They are easily replaced and can be purchased at most pharmacies and grocery stores. Open the fob's case with a screwdriver with a flat head, and gently pry out the battery that you have. Replace the battery, ensuring it's not damaged or loose. Most fobs require batteries with CR2032 capacity. However, yours might require a different type.

If your device loses pairing, it could cease to respond to buttons. This can be caused by various reasons like changing the batteries. However it is possible to fix the issue with an auto Locksmith or local dealership will usually be able to solve the issue.

If none of the solutions above work, try this method: disconnect the batteries from the car and the fob for a short period of time, then reconnect the two in reverse order. This may cause the system to restart and in certain cases it can fix the issue without further steps.

Keep the fob clear of water or other sources of harm while you're trying out new techniques. Fobs can be quite sturdy, but you need to treat it with care if you want it to last as long as possible.

If none of the troubleshooting procedures above are helpful you, you may have to replace your key fob. If it has been dropped or trampled upon, or exposed to harsh environmental conditions, it could not be able to be repaired and will require a replacement. Find car key repairs .

Lost Fob

Even with the best of care it's a fact of life that car key fobs will occasionally cease to function. If you lose yours it could be a huge expense to replace it--especially in the event that you don't have spare. "You could end up paying $50 or more to purchase a new replacement from a dealer and get it programmed, as well as a new mechanical backup, which will cost at most another $100," says Mel Yu, an automotive analyst with Consumer Reports.

A weak battery is one of the most common causes for a keyfob to cease to function. If you know how to change the battery, or if your owner's guide has instructions, you can try it yourself. If this doesn't work, you'll have to call an expert.

A locksmith is in a position to assist you in finding the lost fob or have it replaced. A locksmith will likely know why your fob stopped functioning in the first in the first place. If your car is old and does not come with smart technology it is still possible to save money by recording the key number plate of your mechanical backup key. It's usually hidden behind an ornamental keychain. This will make it much easier for the locksmith to reprogram a new key fob for your car should you need to do it.

If your key fob is an older smart key, it'll need to be deprogrammed by a locksmith or dealer. This can cost more than just replacing it. Modern key fobs are secured by rolling-code encryption which stops thieves from gaining access to the car. This means that the locksmith has to have a special programming tool that is available only to car manufacturers, which can increase the cost.

In the majority of cases, the entire service will be billed at the same time. This includes any charges for reprogramming a new keyfob. It can cost anywhere from $20 in some stores to over $200 at car dealerships, depending on the model of vehicle.