Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs can experience problems such as losing functionality. While some issues might require professional attention, many can be resolved at home.
The first step is typically to replace the battery. Most fobs utilize batteries with a flat design which are easily found in hardware stores or auto parts stores.
Dead Battery
It can be a real issue when a key fob's battery goes out. This is especially true when you are far from home. There are ways to get back on the road even when your car's keyless entry doesn't work.
One of the first things to check is to determine if the key fob's buttons still function. If they do not, the problem could be in the car's locks.
If the keys aren't unlocking, look for a mechanical key slot hidden in the door handle trim or somewhere else on the car (consult the owner's manual). Insert the mechanical key and try again. If this fails to unlock the door, certain cars come with an application that lets you unlock it remotely. FordPass Connect MyChevrolet Mobile Application and myMazda apps, for example, allow owners to unlock their doors using their smartphones. However, these apps are subject to a monthly fee.
It is also important to ensure that your key fob isn't draining your vehicle's battery by being plugged into it. A dead key fob can drain your battery, especially if you use its remote feature while watching TV or speaking on the phone.
The key fob should be held right up to your car's start button could cause an ignition key fob with a low battery. This simple fix could save you from a trip to your dealer or to certain Interstate All Battery Centers.
You can also determine if your key fob is actually dead by trying it in a different vehicle that has the push-button ignition. If it doesn't work, it could be necessary to replace the battery in your fob. It's a good idea keep an extra key fob in your purse or backpack.
Damaged Buttons
It is possible that your key fob is damaged and has a button. Your key fob likely contains an electronic circuit board that has "contact pads" for each button, and these little pads are coated with an electrically conducting film that wears away over time. This wear could cause your fob to react slower, or not to respond at all.
The contact pad on a car keyfob can be easily replaced using an flat-head screwdriver. However, if the key fob is badly damaged or broken in any way, it might be more difficult to remove the case, and you'll be required to take the fob to an auto shop for repair.
It's not uncommon for a key fob be thrown around, trampled upon or exposed to water. All of these events can cause physical damage, such as breaking the keys and snapping them.
key fob repairs can also cause internal damage to the fob and cause a malfunction. It's a good idea, therefore, to always carry a spare fob in your purse or in your pocket in case the one you currently have fails.
If your key fob's buttons aren't responding to the extent they should, first check to make sure the battery is in good working condition. Key fobs do not require a special type of electronic device. They utilize the same two-dollar battery that is used in hearing aids and watches. They are sold at hardware, drug, and online stores.
If the battery is in good condition it is possible that the buttons are dirty or worn out. You can easily clean them with a damp cloth. If they're still not responding, try a different type of key fob to determine whether the problem is with yours, or with a particular type of car key fob. If the other key fob is working, then yours may need to be reprogrammed or replaced.
Reprogramming
The secret world of fobs for car keys is more complicated than most myths suggest. The basic fobs operate on unique radio frequency signals that are assigned to specific cars. The fobs have to be programmed to unlock and start the vehicle. Reprogramming a key fob is not as easy as pressing several keys. It's usually done by the dealer.
The process of reprogramming a fob depends on the make and model year of the car you own It is therefore essential to refer to the owner's manual to get step-by-step instructions. Certain manufacturers, such as Mercedes have proprietary technology that only dealers are capable of creating a brand new key fob, and then sync it to your vehicle. Some independent shops might offer this service, so be sure to read reviews and prices before selecting the right shop.
Certain models of cars will erase all other fobs after they've been reprogrammed, which means you'll need to get any additional fobs professionally programmed as well. This can be costly particularly if your fob is no longer working. Even when the mechanical key doesn't work to start your vehicle, it's a good idea to have a backup option that can open the trunk and doors.
Be prepared for a gruelling experience if you decide to reprogram your fob by yourself. You'll be disappointed by the numerous guides on the internet that promise success. A lot of these guides were created by people who have no knowledge of this field and are often founded on unsubstantiated claims. Some of these guides claim that you can program your car key fob with just a few clicks. This is a false claim.
The battery is usually held in place by clips made of plastic, which can be easily removed. However the circuit board is home to the battery, so you'll need to remove the battery with an instrument. Once you get inside, you'll be able to find the button cell battery which is typically a tiny watch battery that can be purchased at a variety of pharmacies or at home improvement stores. It's typically easy to replace the battery. Before replacing the entire unit, you can try replacing the button cell first.
Replacement
There are several ways to fix a damaged or malfunctioning car key fob. It is possible to repair the issue quickly by replacing the battery or programming your key fob. However it is possible that a more extensive repair may be needed. A spare fob is helpful in the event that one is lost or taken.
The majority of modern key fobs have a small physical key in addition to the electronic components, making them both pricier and more difficult to replace than traditional keys. Some "smart fobs" include remote starters. It's therefore important to be aware that it could take up to an hour to have a replacement key fob cut and programmed for your vehicle.
Fobs make use of a tiny radio transmitter that is mounted on a circuit board to communicate with the car's receiver. When you press a button, the transmitter sends an RF signal unique to the car's receiver. The receiver recognizes the signal and validates it against the preprogrammed codes. This allows the driver to unlock the car and start it from a distance without inserting the key into the ignition or turning a lock.
If the buttons on the fob you have purchased fail to respond or work sporadically it could mean that they have been damaged by water or other causes. It is possible to fix the fob by removing it and inspecting for any broken or unresponsive buttons. If this does not solve the problem, try reprogramming the fob or purchasing a new fob.
It is recommended to consult an auto dealer in your area or a locksmith before buying a replacement keyfob on the internet to make sure it is compatible with the security system of your vehicle. Aftermarket fobs can be cheaper, but you should research brands and read reviews before trying to program them yourself. While certain fobs can be repaired by a reputable locksmith others require specialized equipment for programming that can only be used by a vehicle dealer or auto technician.