Remote Key Fob Repair: The Good, The Bad, And The Ugly

· 5 min read
Remote Key Fob Repair: The Good, The Bad, And The Ugly

Remote Key Fob Repairs You Can Do at Home

You may be enticed in the event that your remote key fob isn't working, to take it to a dealership to have it reset. Instead, you can try some simple fixes at home.

Begin by replacing the battery. Hardware stores sell flat watch-style batteries that are inexpensive and easy to locate. Take a closer look at the key fob and check for buttons that are worn out or out of the right place.

Dead Battery


The key fob is a small electronic device that makes it simple to lock or unlock your vehicle. It uses the radio transmitter of a short range to transmit distinct codes to the receiver inside your vehicle. Key fob batteries typically last a long time, but they can be wiped out at any point. It is easy to determine if the battery has gone out by examining the LED light or attempting to press one of the buttons. If the key fob does not respond, the battery has died and needs to be replaced.

Change the battery on the key fob is simple and quick. It is usually as simple as opening the key fob, taking out the old battery, and replacing it with a fresh one. The batteries for fobs are small, similar to those found in watches or hearing aids. They are available in home improvement stores and general stores. They are usually shaped as small coins with plus and minus symbol on the bottom. Consult  car key sensor repair near me  or the label on the fob that you have on your key if you aren't certain which batteries your key fob is using.

After you change the battery your key fob will work as normal. However, if it doesn't, there may be another issue with your vehicle or the system that is causing the fob to not function properly. If this is the situation, you'll have to get roadside assistance to resolve the issue.

Based on the model and make of your vehicle, you could be able to buy replacement keys on the internet or from a dealer. Buying a new fob is usually the best alternative, since it will save you time and money compared to fixing an old one by yourself.

Buttons Are Unresponsive

It could be worn out button sensor if you've driven for a long time and notice that your keys don't work. Most fobs have rubberized buttons that wear out over time, which could cause them to not function correctly when they are pushed in a particular way or with extreme force. This is a common issue with many fobs, and is easily repaired by following a few simple DIY steps.

To unlock the car the fob transmits an indication to the receiver in the car. If the receiver is damaged, it may not receive the signal and the key won't operate to unlock or start your vehicle. This can be resolved by having your mechanic inspect the receiver to determine if there is damage. This service is often free or costs only little, depending on your car's make.

It is not surprising that key fobs are commonly used and are often tossed into pockets and purses. They can become a bit finicky and only function properly when they are pressed in a particular way. This is a simple fix for most fobs since the buttons can be strengthened and fixed quickly using silicone and a little effort.

To get the buttons working once more, press and hold the lock and unlock buttons on your key fob until you hear a sound in your vehicle. This must be repeated several times in order to activate the button. The next step is to rotate your key in and out of the ignition a couple of times to reset your fob's connection to the vehicle. Once the connection is restored, remove the key and should be able to unlock your vehicle with the remote. Repeat the process until the fob is working properly. If you are not able to fix the fob with this method, it could be necessary to replace it. If you decide to replace the fob, be sure it's programmed for your vehicle's model and make.

Keychain Loop Breaks

If the key fob's keychain loop breaks off, it can break off from your keys and cannot longer be used to lock or unlock your vehicle. The keychain loop can be easily replaced.

Key fobs can also malfunction because of water or moisture damage. Symptoms include a reduced range of operation, or no functionality at any time. The issue can be solved by replacing the battery and drying the key fob. However, in certain cases, professional repair or replacement may be required.

Key fob buttons might become worn out over time, resulting in less functionality or a lack of responsiveness. It could be necessary to replace the key fob button or case, but reprogramming can often resolve this problem. Signal interference from nearby electronic devices can sometimes affect the connection between the key fob and the vehicle which can cause issues with unlocking or locking. It could be necessary to conduct a diagnostic test at the dealership in order to troubleshoot. This is typically the case for older electric key fobs that operate using infrared signals and require clear line-of-sight in order to function, but most modern microchipped key fobs use challenge-response authentication over radio frequency to connect with your vehicle.

Corrupted or lost pairing

Over time, keyfob batteries lose power. If the battery has lost much of its charge, the remote might no longer respond to commands. This issue is usually fixed by replacing the battery, but it may also be necessary to reprogram the remote.

Key fobs found in modern cars are capable of controlling lots of functions. They can raise and lower the windows, activate the alarm, switch on the interior lights and even start certain vehicles. As a result, it can be easy for owners to use the wrong buttons due to accident. It is a good idea to keep your owner's manual handy when you use your key fob so that you can refer to the specific sections that cover the different features of your car.

Another reason that causes a fob's malfunctioning is that the signal has become corrupted or lost. Certain of the latest key fobs utilize sophisticated signal encryption technologies to stop thieves from stealing the signals and making remotes or keys that aren't authorized that can unlock your car. To reprogram the fob you'll need to visit a dealer or auto locksmith.

Some automakers provide their own instructions available for reprogramming key fobs yourself. In most cases, these processes are simple enough to do at home. However, the procedure is not the best choice for beginners without extensive electronic experience. It is better to leave this kind of work to experts.

Key fobs can suffer more wear and tear if used and handled frequently. The buttons of a fob can be pushed around, and the case can break or crack. Keep a spare fob on you at all times. This will save you time if your remote breaks down while you're out and out and about. Keep it close to your bed at all times, so that you can use the panic button if you hear noises during the night.