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Remote Key Fob Repairs You Can Do at Home

If your remote key fob stops functioning, you might be tempted to go to a dealership to have it changed. Instead, try a few quick fixes at home.

Start by replacing the battery. Flat watch-style batteries are cheap and readily available in hardware stores. Check the key fob for worn buttons or ones that aren't in the right place.

Dead Battery

The key fob is an electronic device that makes it easy to lock or unlock your car. It utilizes the radio transmitter of a short range to send distinct codes to the receiver in your vehicle. The batteries inside key fobs last for a long period of time, but they can be wiped out at any time. It is easy to tell if the battery has been drained by looking at the LED's light or trying to press one of the buttons. If the key fob does not respond, the battery has died and requires replacement.

It is quick and easy to replace the battery on your key fob. It's usually just a matter of opening the fob, pulling out the old battery before inserting the new one. Batteries for fobs are tiny, similar to the ones used in hearing aids or watches. They are available in home improvement stores and general stores. They're usually shaped like small coins with plus and minus symbol on the bottom. Consult your owner's guide or the label on your key fob if aren't sure which batteries your key fob is using.

The fob you have been using for your key should function normal. If it doesn't work, there could be another issue with your car or its system that's causing it to not function correctly. If this is the case you'll need roadside assistance.

You can purchase replacement key fobs from a dealer or online, based on the model and make of your vehicle. It's typically cheaper and less expensive to purchase a new key fob than to repair a damaged one.

Buttons aren't responding

If you've been driving for a while and notice that the buttons on your keys aren't functioning it could be due to an issue with worn button sensors. The buttons that are made of rubber on most fobs will wear down with time. This could cause them to function properly when pushed in a certain way or with extreme pressure. This is a common issue with a lot of fobs and can be solved by following a few DIY steps.

The fob transmits an unlocking signal to the car's receiver. If the receiver is damaged, it may stop receiving the signal and the key will not operate to unlock or start your vehicle. The best way to resolve this is to have a local mechanic examine the receiver for damage. In most instances, this will be free or a small fee according to the make of your vehicle.

The key fobs frequently used get many uses and are often jostled around in pockets and purses, so it is no surprise that they sometimes be finicky and work properly when pressed a certain way. It is not difficult to fix most fobs since the buttons can be reinforced with silicone and a bit of effort.

Press and hold the lock/unlock buttons on your keyfob until hear the car chime. This will need to be done several times to activate the button. Next, you will need to switch your key into and out of the ignition in your car a few more times to reset the connection between the fob and the car key remote repair. Once the connection is restored, you can remove the key and should be able to unlock your vehicle with the remote. Repeat the process until your fob is functioning again. If you are not able to repair the fob by this method, it could be necessary to replace it. If you decide to replace the fob, make sure it's programmed for your car's model and make.

Keychain Loop Breaks

If the key fob's plastic keychain loop gets damaged it will break off from your keys and cannot longer be used to lock or unlock your car. The keychain loop can be easily replaced.

Water damage and moisture can also cause key fobs to malfunction, with symptomatic problems including a shortened range of operation or no function at any time. Drying the key fob and replacing the battery may fix the issue, but sometimes professional repair or replacement is required.

Key fob buttons might wear out over time, resulting in less functionality or a lack of responsiveness. This could necessitate an entirely new key fob case or fob button replacement, but most of the time, the issue is solved by changing the program. Occasionally, signal interference from nearby electronic devices could interfere with the connection between the key fob and the vehicle, leading to problems with locking or unlocking. It could be necessary to conduct a diagnostic check at the dealership to troubleshoot. This is usually the case with older electronic keys that rely on infrared signals to operate and require the use of a line-of-sight. Most modern microchipped keys communicate with your car via the challenge-response method of authorization via radio frequency.

Pairings that are lost or damaged

Over time the batteries of key fobs lose their charge. If the battery has lost too much of its power the remote will not respond to commands. The replacement of the battery is usually enough to solve the issue, but you may also have to get the remote reprogrammed.

Modern cars come with key fobs that allow for various functions. They can raise and lower windows, trigger the alarm as well as switch on the interior lights and even start certain vehicles. It is not uncommon for owners of vehicles to accidentally hit the wrong buttons. Keep the owner's guide close at hand when you use your key fob to quickly refer to the sections that pertain to the car's features.

A fob might not function because the remote signal is damaged or lost. Certain of the latest key fobs use sophisticated encryption techniques to prevent thieves from intercepting the signals and making remotes or key fobs that are not authorized which can unlock your vehicle. You'll likely need to visit an auto locksmith or dealer in order to re-program the fob and restore its function.

Some automakers provide their own instructions for reprogramming the key fob of their vehicles. Most of the time, these procedures are easy enough to do at home. This procedure is not recommended for beginners who do not have extensive experience in electronics. It is best to leave this type of work to experts.

Key fobs receive a lot of wear and tear, particularly if they are frequently used and handled. The buttons on a fob may be jostled and the case could break or crack. Keep a spare fob on your person at all times. This will save you time should your remote break down while you're out and out and about. Keep it near your bed at all times, so you can use the panic button in the event that you hear noises during the night.