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15 Things You've Never Known About Fob Key Repair
Key Fob Replacement and Repair

The key fobs found in modern automobiles are very efficient and are subject to lots of abuse. Sometimes, just a simple repair or replacement is all you need to make them work again.

Most fobs run on a flat watch-style batteries. This is readily available in auto parts and hardware stores. Before you call in a professional, do a few DIY fixes.

Dead Key Fob Batteries

The battery in the key fob powers the remote function in your car. It also, in conjunction with push-to-start vehicles it allows it to start your engine. Therefore, it is crucial to maintain a healthy, working battery. A dead key fob can be an issue for anyone in the middle of nowhere. The good news is that a simple, inexpensive replacement can be made to fix it in a short time.

The most obvious sign that a battery on a key fob is depleting is the decrease in signal strength and range. You may also notice the buttons on your key fob are not working or require extra effort.

It is common to find the latest key fob batteries 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. However it's best to check your owner's manual before you shop for the correct battery for your fob. Some cars require a particular size or type of battery that isn't always readily available at big-box stores, so be sure to know the right specs before you buy.

The battery is typically located on the back of the key fob. It can be removed using an abrasive screwdriver with a flat blade by removing the case. It will usually resemble an ordinary coin and will be marked with the battery's size. Be sure to note which way the plus and minus symbols are placed to ensure that the new battery is properly placed. Once the battery replacement is inserted, gently snap both pieces of the fob in place and test all of the buttons to ensure they work.

It's worth noting that in the event that your key fob continues to not function, even after a battery replacement, it might have been deprogrammed. In this instance you'll have to contact locksmiths for assistance and it will cost you a little more than simply replacing the battery in your key fob.

If the battery in your fob is dying or you're having other issues with your key fob an experienced mechanic such as one from YourMechanic can check and repair it to get you back on the road. Be sure to check out the range of services we offer in your region and book an appointment now!

Weak Signals

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

Examining the battery level of your fob is a good idea because it could affect signal sensitivity. It's also worth resetting the settings on your fob that can help get the same response from the car. The procedure differs from vehicle to vehicle, so the owner's manual or a phone call to the manufacturer's help line is probably the best guide here.

Other factors can contribute to weak fob signals, for example, interference from other devices that operate 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 transmits to the receiver of your vehicle.

The physical damage to your keyfob can affect the transmission of an RF signal, which can result in lower performance and less range. A blown fuse, damaged or cracked button, or a bent case on the fob could affect signal transmission and cause the remote not to respond.

There are a few simple steps you can take to try and solve the issue of weak fob signals, for example, resetting the fob's settings or changing the battery. If your fob is old and worn out, it might be time to replace it.

Don't forget to use the spare remote that was included with your vehicle if your primary remote begins to fail. Try this method first to see if you can solve the issue prior to buying a new remote. If not, it could be the right time to consult an experienced auto locksmith. They will be able to identify the issue and recommend the best course of actions.

Physical Damage

Key fobs can have problems from time to time. Fortunately, most of these problems are not difficult or complicated and can be fixed with some simple steps. It's important to keep spare batteries or another fob available in case one of your keys fails to work.

The most frequent reason for car keys not working is an inactive battery. These tiny devices are powered by lithium-ion buttons or coin cell batteries. They can be replaced easily and can be found at most pharmacies, grocery stores and shops that sell electronic products. Open the fob's case with a screwdriver with a flat head and gently pull out your existing battery. Replace the battery, ensuring that it's not damaged or loosened. Most fobs require batteries with CR2032 capacity. However, yours might require a different type.

The fob may also stop responding to buttons after losing its pairing with the car. This could be due to many factors like changing the batteries. However an auto Locksmith or a local dealership will usually be able to repair the issue.

You can try this method to fix your fob if none of the above methods work: Disconnect the battery from both the fob and the car for about 10 minutes, then reconnect them in a reverse order. This could trigger a restart within the system and in some cases this will fix the issue without having to do any of the other steps.

Keep the fob away from water or other sources of damage while trying out new techniques. A fob can be pretty durable, but it's important to treat it with care if you want it to last as long as possible.

If the above troubleshooting suggestions aren't working, it could be time to consider replacing your key fob. If it's been thrown or trampled upon, or exposed to extreme environmental conditions, it may not be repairable and may require a replacement. If that's the case, be sure to search for a deal before making a final decision.

Lost Fob

Even with the best of care it's a fact of the road that car key fobs will occasionally 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 may end up spending $50 or more to purchase an alternative from the dealer and then have it programmed, and an additional mechanical backup which will cost at least another $100," says Mel Yu who is an automotive analyst at Consumer Reports.

One of the most frequent reasons for a key fob's to stop working is a simple problem, such as a weak battery. If you are aware of how to replace the battery, or if your owner's manual contains instructions, try it yourself. If this doesn't resolve the issue, it's time to call in an expert.

A locksmith can be able to help you find the lost fob or have it replaced. They will also likely have a good idea of why your fob stopped functioning in the first place. And if your car is a model older than the one you own and has no smart technology built-in You can save money by finding the key number plate on your current mechanical backup key (it's usually hidden behind a decorative keychain ornament) and recording it in a secure place, such as your wallet or on your phone. This will make it much easier for a locksmith to reprogram a new key fob to your car in the event that you need to do so.


If your key fob is an older smart key, it'll have to be deprogrammed by a locksmith or dealer. This could cost more than just replacing it. Modern key fobs are protected by rolling-code encryption, which prevents thieves from getting access to your car. That means that locksmiths need an exclusive programing tool that only the vehicle manufacturer has, which adds to the overall cost.

In super fast reply , you'll have to pay for the entire service at once, which includes any charges to reprogram the new key fob. This could range from around $20 at some shops to over $200 at dealerships for cars, based on the vehicle.