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Key Fob Replacement and Repair

Key fobs on modern cars perform a lot of work and are subject to lots of abuse. Often a simple repair or replacement is all it takes to make them work again.

Most fobs use flat-watch-style batteries that are readily available in 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 key repair in your car and, key repairs in push-to-start vehicles, it can start your engine. As a result, it is critical to maintain an efficient, functioning battery. A dead key fob can be an issue for anyone on-the-go. The good news is that a simple, affordable replacement can fix it quickly.

The most common sign that a battery on a key fob is dying is the loss of signal strength and range. You might also notice that the buttons on the fob don't work or require extra effort to activate.

You can often find the latest key fob batteries in the auto parts section of a large box store or on the internet. The majority of these batteries are CR2032 and CR2025 and are available in packs of 2 or more. Make sure to consult your owner's manual prior to you decide on the best battery. Certain cars require a certain size or type that is not always available at big-box stores. Be sure to check before you buy.

The battery is typically located in the back of the key fob. It can be removed using the flat-bladed screwdriver, by opening the case. It is likely to look like the shape of a small coin, and be labelled with the battery's size. Be sure to note the orientation of the plus and minus marks so that you can insert the battery correctly. After the battery has been replaced and the fob is closed, gently snap the two pieces of the fob back together and test the buttons.

If your key fob doesn't work after replacing the battery, it could be deprogrammed. In this situation it is likely that a locksmith will be required to assist you. This will cost more than replacing the battery in the key fob.

YourMechanic's experienced mechanics can repair your key fob if it is damaged or if the battery has died. Make an appointment to look over the range of services we offer in your region.

Weak Signals

If your key fob isn't able to respond to the buttons of the remote, it could indicate that the signaling isn't functioning properly. Radio signals are used to send messages between your car and key fob. Poor or inconsistent radio signals can result in poor performance and range.

The battery level of your fob is a good idea, as it can significantly affect the sensitivity of your signal. Resetting the settings of the fob can also aid in restoring a consistent response. The procedure differs from vehicle to vehicle, so the owner's manual or call to the manufacturer's help line is likely to be the best guide here.

Other factors can contribute to weak fob signals, including interference from other devices that operate on the same frequency as your Key Repairs fob. Power lines, other key fobs, wireless communication devices, and even cellular networks can disrupt the RF (radio frequency) signals that your key fob repair fob uses to connect to the receiver in your vehicle.

Additionally physical damage to your key fob may also interfere with the transmission of signals RF, which could result in a decrease in performance and range. A blown fuse, a broken or cracked button or a bent case of the fob can affect signal transmission and cause the remote not to respond.

There are a few easy steps you can try to and solve the issue of weak fob signals like resetting the fob's settings or changing the battery. If your fob is old and worn out, it's probably time to replace it completely.

Don't forget to make use of the spare remote that was included with your vehicle if your primary remote starts to fail. It's worth trying this option to see if it solves the issue before you invest in an entirely new one. If not, it might be the right time to contact an experienced auto locksmith. They can identify the issue and suggest the best way to proceed.

Physical Damage

Key fobs may have issues at times. Fortunately, most of these problems are not complicated or a major issue and can be resolved with some simple steps. It's also a good idea to have spare batteries or even another key fob in the event that one of your keys fails to work.

A dead battery is the main cause of a car keyfob not working. These tiny devices are powered by lithium-ion buttons or coin cell batteries. These batteries are easily replaceable and can be purchased at most pharmacies and stores. You can open the case of the fob using a flat-headed screwdriver and gently pull out the battery you have. Ensure that it is not damaged or loose and then simply pop in an alternative battery. Most fobs require batteries with CR2032 capacity. However, yours may need a different type.

The fob may not be responding to buttons when it loses its pairing with the vehicle. This could be due to a number of factors, including changing the batteries, but is usually easy for an auto Locksmith or your local dealer to resolve.

If none of the strategies above work, you can try this method: disconnect the battery from the car and the fob for a short period of time, then reconnect the two in reverse order. This can force the system to restart, and in some cases it will resolve the issue without any other steps.

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

If the above troubleshooting tips aren't working, it could be time to consider replacing your key fob. If it's been dropped, trodden on or subjected to other harsh environmental conditions it may be beyond repair and may require a replacement. If this is the case, make sure to look around for a deal before making your final choice.

Lost Fob

Even with the best of care, it's a fact of life that car key fobs can sometimes fail to function. If you lose yours, it could be a huge expense to replace it--especially if you don't have a spare. "You might end up paying $50 or more for a new replacement from the dealer and then have it programmed, and 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 reasons for a keyfob to stop working. If you are familiar with how to replace the battery, or if the owner's manual contains instructions, try it yourself. If that doesn't work, you'll need to call an expert.

A locksmith is capable of helping you locate your lost fob or get it replaced. A locksmith will likely know why your fob stopped functioning in the first initial place. If your car is old and doesn't come with smart technology however, you can save money by recording the key number plate of your mechanical backup key. It's usually hidden behind a decorative keychain. If you're looking to change the programming of the key fob in your car, the locksmith can perform the task more easily.

If your key fob is an older smart key, it'll have to be deprogrammed by a locksmith or dealer. This can cost more than replacing it. The reason is that modern key fobs use rolling-code encryption to prevent thieves from accessing the car. This means that the locksmith has to have a special programing tool that is available only to car manufacturers, which can increase the cost.

In the majority of instances, you'll have to pay for the entire service at once, which includes any costs to reprogram the new key fob. Based on the car it could cost anywhere from around $20 at certain stores to $200 or more at a dealership for cars.