Key Fob Repair: A Simple Definition

Key Fob Repair: A Simple Definition

Remote Key Fob Repair

Modern vehicles come with remote controls that can be used to lock, unlock and start the vehicle. But, like all pieces of modern technology it is not without its own issues.

Most of the time, these issues are simple to fix. It can be as simple as resetting it, which you should be able to accomplish by following the resetting guidelines in the manual of your owner.

Check the Battery

The remote control is powered by the battery in the key fob. It's a tiny and affordable component that needs to be replaced on a regular basis to ensure the fob's functioning. There are a variety of reasons your key fob may not be working besides the battery. Water exposure, physical damage or internal component failure could be the reason. Regardless of the cause, if your key fob isn't responding and is not responding, it's time to replace its battery.

First, make sure you have the right size battery. Most modern key fobs are powered by a CR2032 three-volt battery, which is easily available in a variety of stores. The majority of these batteries are marked with the size on one of the edges of the fob. A quick search for the name of your vehicle's brand will help you identify the exact type of battery it takes.

The fob must be opened carefully and remove the current battery. Take a picture of the inside of the fob to make sure you put it back together correctly. This simple step will save you from buying another fob if you made a mistake when putting it back together.

It is also important to know that certain key fobs come with an alternate mechanical key, also known as an emergency blade. The key blade is situated inside the key fob, and allows you to open the door to the driver's side of your car in the event that the remote control fails. To access the key blade, you have to locate the notch that's at the center of your fob. The notch is typically a circle that's hidden by the fob's plastic casing.

If you're looking to be extra vigilant, you can utilize a multimeter for checking the voltage of the battery.  car key repair shop near me  of modern key fobs have a built-in voltmeter, but you can get a multimeter from most hardware shops for a few bucks. Generally speaking, the battery should be reading 3.0 volts or greater. If it is below that level, it could indicate a battery in its final stages and must be replaced immediately.

Check the Buttons

Car key fobs may seem like nothing more than fancy high-tech items for convenience, but they aren't indestructible. These remote devices can stop functioning after a period of time, particularly if they are used often or if they have been subjected to physical abuse. Fortunately, most of the times, it's simple to diagnose and fix a problem with the remote key fob and replacing the battery is often all that's required.

Modern car key fobs include numerous buttons that serve different functions. For instance, they can be used to lock and unlock the doors, activate the panic button, and open the trunk. When a button on the fob is pressed it sends a radio signal to a receiver within the vehicle. Some fobs also come with a button that will start the engine, which is particularly useful during cold winter mornings or hot summer days.

The buttons on a key fob reset by simply snapping it off and ensuring that they're not broken or stuck. The battery connector terminals on a key fob could be loose over time, even though they are not intended to be removed. Soldering is a way to connect the button contacts to the circuit board if they've been cut off. This will bring back the fob's functionality.

Additionally, if a fob has been damaged or dropped in some other way, the buttons may be broken, out of alignment or misaligned. These kinds of issues are typically more difficult to repair on your own however, they can be fixed by a local auto shop with the right tools and expertise.

It's always an excellent idea to have an extra key somewhere in case one that you frequently use fails to function. You'll avoid being stuck in the middle of nowhere without your keys, or paying for a large amount to have your car taken to the dealer. Check your car insurance, car club membership, or extended warranty coverage for the cost of replacing a replacement key fob.

Check the Casing


It's not uncommon for a key fob to get wet, be it from a pool, a rainstorm or even your washing machine. The resulting water can play havoc with the electronics inside, leading to a host of malfunctions. It's good to know that you can save a key fob from death by following a few easy steps and drying it thoroughly.

First, verify whether the buttons function properly. This usually involves removing, cleaning and reassembling the buttons. If the buttons are stuck or don't come in, it might be the time to replace your remote.

Examine the case to ensure that nothing is interfering in the operation of the key fob. Open the case with tweezers, and then remove the battery. Don't disassemble the antennas or circuit board. If you disrupt the circuits that keep your key fob's programming, you will need to visit an Interstate All Battery Center or dealer to reprogram it.

After you have replaced and removed your battery, it is a good idea for you to dry the key fob out by putting it in an airtight bag that contains silica gel packets. This will prevent future moisture problems and make your key fob more durable.

If, after all this, the fob is still not functioning properly, you'll have to visit a dealership or an independent shop that is specialized in your specific model and make of vehicle. They can reprogram the key fob for your vehicle and hopefully restore the function to its original state.

If all else fails then you can purchase an additional keyfob online, or in your local NAPA Auto Parts shop. These do-it-yourself-operated remotes look like your factory fob, however, they are more affordable and can be easily paired with your vehicle by following simple instructions. NAPA offers a variety of do-it yourself replacements that you can re-program in minutes.

Check the Connections

Sometimes your key fob might cease to function - even though it's programmed to your vehicle. It could be due to various reasons that include malfunctioning contacts on the battery or buttons. If this is the case, you might be able to fix it yourself by carrying out basic maintenance.

You should first check whether your backup remote able to lock and unlock the doors of your car. If it can, then you might have an issue with your primary remote. If you still can't do it, you can try replacing the batteries in the backup remote.

Before you replace the battery It's recommended to take off your key fob and conduct an inspection of the circuit board. You'll want to ensure that there aren't any damaged solder joints that require to be repaired by re-soldering. After that, you can replace the battery and reassemble the key fob.

After you've replaced the battery and reassembled your key fob, it's time to test out its connection to your vehicle. This can be done by inserting a small flathead screwdriver into the notch at the bottom of your key fob. From there, you'll be able to take apart the two halves of your key fob, and gently remove the circuit board. Make sure to insert a brand new CR 2032 3V battery, making sure that it's placed with the negative side facing down. After you have reinserted your board and reassembled your key fob.

If this does not resolve the issue, you could have a more serious issue. In this instance, you will have to contact your dealer or an independent repair shop that specializes in the make of the car you own. They can identify the issue using a radio frequency tester which is a gadget that determines if your key fob is sending signals to your car's computer.

We hope that this guide was helpful for anyone who is having trouble with their vehicle's key fob. Contact us if have any questions or concerns. We'll be happy to assist you get back on the road again in Deptford or Cherry Hill.