Key Fob Replacement and Repair
Key fobs on modern cars are very efficient and are subject to a lot of abuse. Often a simple repair or replacement is all it takes to get them working again.
The majority of fobs are made with flat watch-style batteries, which can be found in hardware stores and auto parts retailers. Before calling a professional, do some of the DIY fixes.
Dead Key Fob Batteries
The battery in the key fob's remote powers the remote you have in your car and, in push-to-start vehicles, it can start your engine. It is therefore essential to keep a functioning and healthy battery. A dead key fob can be an issue for anyone traveling. The good news is that a cheap, simple replacement can fix it quickly.
The loss of range and signal strength are the most commonly observed indicators that a battery in a keyfob is failing. You might also find that the buttons on your fob don't function or require any effort to activate.
A new key fob can be found in the auto part section of a big retailer or online. They are typically CR2032 and CR2025 and are available in packs of 2 or more. However it's a good idea to check your owner's manual before shopping for the correct battery for your device. Some cars require a particular size or type of battery that isn't always in stock at big-box retailers So, make sure you be aware of the correct specifications before you purchase.
Typically the battery is situated on the back of your key fob and can be removed by prying the case open with an abrasive screwdriver with a flat blade. It is likely to look like an ordinary coin and will be marked with the battery's size. Make sure to note the way the plus and minus symbols are placed to ensure that the new battery is placed correctly. After the replacement battery has been placed in the fob, gently snap both pieces of the fob in place and test each button to make sure they function.
If your key fob isn't working after replacing the battery, it might be deprogrammed. In this instance, a locksmith will be required to assist you. This is more expensive than replacing the key fob's battery.
If your fob's battery is dying or you're having other issues with your fob's key an experienced mechanic such as one from YourMechanic can check and repair it to get you back on the road. Schedule an appointment to see the range of services we offer in your region.
Weak Signals
If you find that your key fob isn't responding to the buttons on the remote, this can be a sign of a problem with the signaling. Radio signals are used to send messages between your car and the key fob. Weak or inconsistent radio signals can cause poor performance and range.
One of the first things to check is whether or not the battery of your fob is depleted because this could significantly affect the sensitivity of the signal. Resetting the settings of the fob can also aid in restoring a regular response. The procedure varies from vehicle to vehicle, so the owner's manual or a call to the helpline of the manufacturer is likely to be the best resource here.
Other factors, including interference from other devices operating on the same frequency, can also affect weak signals. Power lines and other key fobs wireless communication devices, and even cell networks can interfere with the RF (radio frequency) signals that your key fob uses to connect to the receiver inside your vehicle.
The physical damage to your keyfob can affect the transmission of an RF signal, resulting in low performance and a limited range. A blown fuse, broken or cracked button or a bent case of the fob may affect signal transmission and cause the remote to function properly.
You can attempt to resolve the issue by resetting the settings on your fob, or by replacing the battery. If your fob is old and worn, it could be the right time to replace it.
Don't forget to remember that if you have an extra key fob that comes with your vehicle, it could be used as a replacement for the primary remote in case it starts to fail. It's worth trying this solution to determine if it resolves the issue before you invest in a new one. In this instance, it might be an appropriate time to consult an auto-locksmith professional. They'll be able to diagnose the problem and recommend the best method of action.
Physical Damage
It's not uncommon for key fobs to encounter problems from time to time. Luckily, the majority of these issues aren't serious or complex and can be resolved by following a few simple steps. It's also a good idea to keep spare batteries or another fob in the event that your key ceases to work.
A dead battery is the main cause of a car keyfob not working. These little devices depend on tiny lithium-ion coin or button batteries to function. They can be replaced and can be found at most pharmacies and stores. You can access the fob's shell with an screwdriver that has a flat-head and gently pry out the existing battery. Make sure it's not loose or damaged and then put in an alternative battery. The majority of fobs use CR2032 batteries, but yours might require an alternative type.
When your fob loses its pairing, it could stop responding 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 a local dealership is usually able to fix it.

If none of the methods above work, you can try this method: disconnect the battery from the car and the fob for a short period of time and then connect them in a reverse order. This could trigger a reboot within the system and, in some instances it will solve the issue without having to do any of the other steps.
While you're experimenting with the fob, be sure to keep it away from water and other potential sources of damage. A fob is durable however, you must treat it with care to ensure that it lasts for as long as you can.
If none of the troubleshooting steps above help, you may need to replace your key fob. If yours has been dropped or tripped on, or subjected to other extreme environmental conditions, it could be damaged beyond repair and in need of an upgrade. If that's the case, you should be sure to look around to find a bargain before making a final decision.
Lost Fob
Even with the best of care keys for cars, they can fail at times. It's expensive to replace yours in the event that you lose it, especially if you do not have an alternative. " repair car key might end up paying $50 or more to purchase an equivalent replacement from the dealer and have it programmed, and a new mechanical backup which could cost you at least another $100," says Mel Yu, an automotive analyst with Consumer Reports.
One of the most frequent reasons for a key fob to stop working is a simple issue, such as an insufficient battery. You can try changing the battery on your own if you know how or refer to your owner's manual. If that doesn't work, you'll need to contact an expert.
A locksmith can be in a position to assist you in finding the lost fob or have it replaced. They'll also have an idea of the reason your fob stopped working in the first place. If your car is older and doesn't include smart technology, you can still save money by recording the key's number plate of your mechanical backup key. It's usually hidden behind a decorative keychain. If you need to reprogram the key fob of your car, the locksmith can do it more easily.
If your key fob is an older smart key, it'll have to be deprogrammed by a locksmith or a car dealer. This could cost more than replacing it. That's because modern key fobs use rolling-code encryption to prevent thieves from getting into the car. That means that the locksmith must have an exclusive programing tool that only the car manufacturer has, which adds to the overall cost.
In most instances, you'll have to pay for the entire service at once, including any costs to reprogram a new key fob. Based on the car the cost can range from $20 at some stores to $200 or more at a car dealer.