What Is Fob Key Repair And Why You Should Take A Look

· 6 min read
What Is Fob Key Repair And Why You Should Take A Look

Key Fob Replacement and Repair

The key fobs in modern vehicles perform a lot of work and are subject to an awful amount of abuse. Often a simple repair or replacement is all you need to make them work again.

The majority of fobs are powered by a flat watch-style batteries, which can be found in hardware and auto parts stores. But before you call an expert, you can try a few 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. This is why it is critical to maintain an active, healthy battery. A dead key fob can be an issue when you're traveling. The good news is that a simple, affordable replacement can fix it quickly.

The most common indication that a battery on a key fob is depleting is the loss of signal strength and range. It is also possible to notice that the buttons on your key fob aren't working or require more effort.

It is common to find an updated key fob battery in the auto parts section of a big box store or on the internet. Typically, these batteries are CR2032 and CR2025 and are sold in packs of 2 or more. Consult your owner's guide before you purchase the correct battery. Certain cars require a specific size or type of battery that isn't always available at big-box stores, so be sure to know the specifications prior to you purchase.

Typically the battery is placed on the back of your key fob.  car key repairs near me  can be removed by prying the case open with the flat-blade screwdriver. The battery will look similar to an ordinary coin, and it will be labeled based on its size. Make sure to note the way the plus and minus symbols are oriented to ensure that the battery you are replacing is positioned correctly. Once the battery replacement is placed in the fob, gently snap both pieces of the fob in place and test each button to ensure that they work.

If your key fob isn't working after replacing the battery, it might have been deprogrammed. In this case it is likely that a locksmith will be needed to help you. This will cost more than just replacing the battery in the key fob.

If the battery in your fob is dying or you're having other issues with your fob's battery An experienced mechanic like one from YourMechanic can examine and fix it to get you back on the road. Schedule an appointment to see all the services we offer in your local area.

Weak Signals

If your key fob isn't able to respond to the buttons of the remote it could be an indication that the signaling system is not functioning properly. Radio signals are used to transmit information between your car and key fob. Inconsistent or weak radio signals can lead to poor performance and range.

The battery level of your fob is a good idea as it can have a significant impact on signal sensitivity. It's also worth resetting the settings of your fob that can help restore an even and consistent response from the car. The process will vary from vehicle to vehicle. The owner's manual or a phone call to your manufacturer's support line is your best guide.

Other factors can cause weak fob signals, including interference from other devices operating on the same frequency as your key fob. Other key fobs and wireless communication devices can interfere with the RF (radio-frequency) signals that your key fob sends to connect to the receiver of your vehicle.

The physical damage to your keyfob can affect the transmission of RF signal, resulting in low performance and a limited range. A blown fuse, a broken or cracked button or a bent case of the fob could affect the transmission of signals and cause the remote to not to function properly.


You can fix the problem by resetting your fob's settings, or by replacing the battery. However, if your fob is old and damaged, it's time to replace it completely.

Don't forget to use the spare remote that came with your car if your primary remote starts to fail. It's a good idea to try this method to see if it solves the issue prior to investing in an entirely new one. In this situation it may be an appropriate time to consult a professional auto-locksmith. They will be able to identify the issue and suggest the most effective solution.

Physical Damage

Key fobs can be troublesome at times. Most of the time, these issues aren't complex or serious and can be resolved by following a few easy steps. It's also a good idea to have spare batteries or even another key fob in the event that one of your keys ceases to function.

The most common reason for the car key fob not working is a dead battery. These tiny devices are powered by lithium-ion button or coin cell batteries. These are easily replaced and can be found in most pharmacies, grocery stores and places that sell electronic products. You can access the fob's case using a screwdriver with a flat head and gently pull out the battery. Replace the battery, ensuring it's not damaged or loosened. Most fobs require batteries with CR2032 capacity. However, yours may need a different type.

If your device loses pairing, it may also stop responding to buttons. This can be caused by various reasons like changing the batteries. However an auto Locksmith or a local dealership will usually be able to fix it.

If none of the methods above work, try this trick: disconnect the batteries from the car and fob for a short period of time and then reconnect them in a reverse order. This can force a restart within the system and in some cases, this alone will fix the problem without doing any of the other steps.

Keep the fob out of water or other sources of damage while you are experimenting. The fob is tough but you need to take care with it to make it last for as long as you can.

If all of the suggestions above do not help, it may be time to think about replacing your key fob. If it has been dropped or trampled upon, or exposed to harsh environmental conditions, it could not be repairable and will require a replacement. Shop around to find the best deal.

Lost Fob

Even with the best care, it's a fact of life that car key fobs can occasionally stop working. If you lose yours, it could be very expensive to replace it, particularly in the event that you don't have spare. "You could end up paying between $50 and $100 for a new one and having it programmed by the dealer, plus a mechanical backup that will cost you another $100," says Mel Yu an automotive analyst at Consumer Reports.

One of the most frequent reasons for a key fob's device to stop working is a simple problem, such as an insufficient battery. If you know how to replace the battery, or if your owner's manual has instructions, you can attempt it yourself. If that doesn't solve the problem, it's time to contact an expert.

A locksmith will be capable of helping you locate your lost fob or get it replaced. They'll also have a good idea of why your fob was not working in the first place. If your car is older and does not come with smart technology, you can still save money by recording the key's number plate from your mechanical backup key. It's usually hidden behind a keychain with an ornamental design. This can make it easier for a locksmith to reprogram a new key fob for your car should you need to do so.

If your key fob is an old smart key, it will need to be deprogrammed by a locksmith or a car dealer. This can cost more than replacing it. Modern key fobs are secured by encryption using rolling-codes, which prevents thieves from getting access to the car. This means that the locksmith must have a special programming tool that is available only to the car manufacturer, which increases the cost.

In the majority of instances, you'll need to pay for the entire service at once, which includes the cost of programming a new key fob. This can range from $20 in some stores to more than $200 at car dealerships, based on the vehicle.