Key Fob Replacement and Repair

The key fobs found in modern cars perform a lot of work and are subject to a lot of abuse. Often just a simple repair or replacement is all that's needed to make them functional again.

Most fobs utilize flat watch-style batteries, which are easy to find in hardware stores and auto parts retailers. Before calling a professional, you can do a few DIY fixes.

Dead Key Fob Batteries

The battery of the key fob powers your car's remote and, in push-to-start vehicles, it can start your engine. This is why it is crucial to maintain an efficient, functioning battery. A dead key fob can be an issue for anyone in the middle of nowhere. The good news is that a cheap, simple replacement can be made to fix it in a short time.

The most obvious sign that a key fob's battery is depleting is the decrease in signal strength and range. You may also notice that the buttons on your fob do not work or require additional effort to turn on.

A new key fob is available in the auto parts section of a major retailer or online. The majority of these batteries are 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 you shop for the right battery for your device. Some cars require a specific size or type that isn't always readily available at big-box stores. Make sure to verify before you buy.

The battery is usually located on the back of the key fob. It can be removed using a flat-bladed screwdriver by prying the case open. The battery will look similar to tiny coins, and it will be labeled based on its 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 battery has been replaced then gently snap the two pieces of the fob back together. Then test the buttons.

It's worth noting that in the event that your key fob continues to not function, even after a battery replacement, it could have been deprogrammed. In this situation, a locksmith will be required to assist you. This will cost more than replacing the battery of your key fob.

If your fob's battery is failing or you're experiencing other issues with your fob's key, an experienced mechanic like one from YourMechanic can examine and fix it to get you back on the road. Make sure you check out all of our services in your area and make an appointment today!

Weak Signals

If you notice that your key fob isn't responding to the buttons on the remote, this could be an indication of a problem with the signaling. Radio signals are used to transmit information between your car and the key fob. Inconsistent or weak radio signals can result in poor performance and a limited range.

One of the first things you should determine is if your fob's battery is low since this can greatly affect the sensitivity of the signal. It's also worth resetting the fob's settings that can help bring back a more consistent response from the car. The procedure differs from vehicle to vehicle, so the owner's manual or call to the manufacturer's help line will likely be your best guide here.

Other factors, including interference from other devices operating at the same frequency can also cause weak signals. Power lines as well as 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 in your vehicle.

Finally, physical damage to your key fob could hinder the transmission of RF signals, which could result in a decrease in performance and range. A damaged or blown fuse, a broken or repairs cracked button, or a bent fob case could interfere with the transmission of signals, causing the remote to fail to respond.

There are a few easy steps you can take to try and solve the issue of weak signals from your fob, such as resetting the fob's settings or changing the battery. If your fob has become old and worn, it could be time to replace it.

Don't forget to make use of the spare remote that came with your car in the event that your primary remote begins to fail. It's a good idea to try this method to see if it can solve the issue before you invest in a new one. If not, repairs it might be the perfect moment to call an experienced auto locksmith. They will be able to diagnose the problem and suggest the best solution.

Physical Damage

It's not unusual for key fobs to experience problems from time to time. Most of these issues aren't complex or serious and can be resolved by following a few easy steps. It's also a good idea to keep spare batteries or another fob in the event that your key stops working.

The most frequent cause for the car key fob not working is an inactive battery. These little devices rely on tiny lithium-ion coin or button batteries to function. They are easy to replace and can be found at most pharmacies, repairs food stores and shops that sell electronics. You can open your fob's case using an screwdriver that has a flat-head and gently pry out the battery that is in there. Ensure that it is not damaged or loose and then insert the new battery. The majority of fobs use CR2032 batteries, but yours may require a different kind.

Your fob could not be responding to buttons if it loses its connection with your vehicle. This could be due to a number of reasons, including changing the batteries, but it is generally simple to get an auto Locksmith or your local dealer to fix.

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

While you're experimenting with the fob, ensure to keep it out of water and other possible dangers. The fob is quite sturdy, but you need to treat it with care if you want it to last as long as it can.

If all of the suggestions above aren't working, it could be time to replace your key fob. If yours has been dropped or tripped on, or subjected to other extreme environmental conditions, it may be beyond repair and in need of an upgrade. If that's the case, be sure to search for a deal prior to making your final choice.

Lost Fob

Even with the best of care keys for cars, they can fail at times. If you lose yours it could be a huge expense to replace it, particularly if you don't have a spare. "You could end up paying $50 - $100 for a replacement and having it programmed by the dealer, and a mechanical backup that will cost another $100," says Mel Yu an automotive analyst at Consumer Reports.

A weak battery is among the most common causes for a keyfob's cease to function. If you are familiar with how to replace the battery, or if the owner's guide has instructions, try it yourself. If that doesn't work, you'll need to contact an expert.

A locksmith can be able to help you find your lost fob or get it replaced. They'll also probably have a good idea of why your fob stopped working in the first instance. And if your car is an older model with no smart technology built-in it is possible to save cash by locating the key number plate on your existing mechanical backup key (it's usually hidden behind a keychain ornament with a decorative design) and storing it in a secure location, such as in your wallet or on your phone. This will make it easier for the locksmith to reprogram the new key fob for your car in the event that you need to do it.

If your existing key fob is a modern smart key it will require an auto dealer or locksmith to remove it from the system and have a new one created, which can be more expensive than replacing it. Modern key repair car fobs are secured by rolling-code encryption, which prevents thieves from getting access to your car. This means that locksmiths must use a special programing tool which is only available to car manufacturers, which can increase the cost.

In most instances, the entire service will be billed at once. This includes any charges for reprogramming a keyfob. Depending on the vehicle the cost can range from around $20 at certain stores to $200 or more at a car dealership.