Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Key fobs may experience issues over time, including the loss of functionality. Certain issues might require professional attention, but most can be fixed at home.
The first step is usually to replace the battery. Most fobs use flat watch-style batteries that are easy to find at hardware stores or auto parts stores.
Dead Battery
It can be a major inconvenience when a key fob's battery dies. This is particularly true when you're away from home. There are solutions to get your vehicle back on the road if your keyless entry system has stopped working.
One of the first things you should check is to determine if the buttons on the key fob work. If they do, then the problem may lie with your car's locks instead of the fob.
If the keys aren't unlocking you need to look for a key slot with a mechanical lock hidden in the trim of your door handle or in another location on the vehicle (consult your owner's manual). Insert the mechanical key, and try again. If this fails to unlock the door, some vehicles have an app that allows you to unlock the door remotely. For example, the FordPass Connect app, the myChevrolet mobile app and myMazda app allow owners to open their doors using their smartphones. These apps do charge monthly subscription fees.
You should also make sure that your key fob isn't draining the car's battery by being plugged into it. A dead fob can drain your battery fast, especially if it is used to control your phone or TV while you are watching.
A key fob that's low on battery can be activated by holding it until you hit the start button. It's a simple solution that could save you a trip to the dealership or select Interstate All Battery Center locations.
You can also find out whether your key fob actually dead by trying it in another vehicle that has the push-button ignition. If it doesn't work, it could be necessary to replace the battery on your fob. It's a good idea keep an extra key fob in your purse or backpack.
Damaged Buttons
It's possible that the key fob has a damaged button. The key fob has an electronic circuit that has "contact pads" that are covered with an electrically conductory film. The film wears away over time. This wear can make your fob respond slower or not at all.
The contact pad on car keys can be easily replaced with a flat-head screwdriver. If the case is damaged or badly damaged it may be difficult to open. You'll need to take it to an auto shop to repair the fob.
It's not unusual for a key fob to be thrown around, trampled upon or even exposed to water. All of these can cause physical damage to the keys, including bending or snapping them.
It can also cause internal damage to the fob, which could result in malfunction. It's a good idea that's why you should always carry an extra fob in your wallet or in your pocket in case the one you're using breaks.
Make sure the battery is charged first to determine if the buttons on your key fob aren't responding in the way they should. Key fobs don't require a special type of electronic device. They use the same two-dollar battery that is used in hearing aids and watches. The batteries are available in drug, hardware and online stores.
If the battery is fine it's likely that the buttons are dirty or worn down, and can be easily cleaned by using a damp cloth to wipe them clean. If they're still not responding, you can try a different type of key fob to determine if the issue is with yours, or a specific kind of car key fob. If the other fob functions it's likely that the key fob you have needs to be reprogrammed, or even replaced completely.
Reprogramming
The world of fobs for car keys is more complex than many myths suggest. Basic fobs operate with radio frequency signals that are specific to each car. The fobs must be properly programmed to unlock and start the vehicle. Unfortunately the process of reprogramming a fob isn't as simple as pressing a few buttons, and with a few exceptions, it has to be done by a dealer.
Consult your owner's guide for specific instructions. Certain manufacturers, such as Mercedes, use proprietary technologies that only the dealership is capable of creating a brand new key fob and then resync it to your vehicle. Some independent shops may also offer this service, so make sure to check reviews and prices prior to choosing the right shop.
Some car models will erase other fobs when they're reprogrammed. This means that you'll have to have any additional fobs programmed by an expert. This is an expensive proposition, especially if you're down to one functioning fob. It's always wise to have a spare mechanical key that you can use to unlock the trunk and doors even if it doesn't start the car.
Be prepared for a difficult experience if you decide to reprogram your fob yourself. You'll be disappointed by the numerous guides on the internet that promise success. Many of these guides were created by people who have no prior experience in this field and often are founded on unsubstantiated claims. Some of them even claim that you can program your own car key fob in just a few clicks, which is extremely false.
Most key fobs are held by a plastic clip that is easy to remove but the battery is inside the circuit board, and you'll have to carefully pry it out using a tool. Once you've got inside, you should be able to find the button cell battery, which is typically a tiny watch battery that is available at a variety of pharmacies or home improvement stores. Removing the battery is typically simple, and it's always a good idea to test first before replacing the entire device.
Replacement
If a car key fob has been damaged or fails to function it is crucial to know there are a few ways to remedy the problem. It may be possible to resolve the issue quickly by replacing the battery or reprogramming the key fob. However it is possible that a more extensive repair may be required. A spare fob is useful in the event one is stolen or lost.
The majority of modern key fobs have a small physical key, in addition to the electronics, making them both pricier and more difficult to replace than traditional keys. Some "smart fobs" include remote starters. It's important to be aware that it could take up to an hour to cut and program the replacement fob to your vehicle.
Fobs utilize a small radio transmitter that is mounted on circuit boards to communicate with the car's receiver. Pressing a button activates the transmitter, which transmits an RF signal unique to the car's receiver. The receiver recognizes the signal and validates it against preprogrammed codes. car key remote repair near me allows the driver to unlock the vehicle and start it from a distance without putting the key in the ignition or turning the lock.
If the buttons on the fob you have purchased fail to respond or work sporadically it could mean that they have been damaged due to water or other elements. You may be able to repair the fob by taking it apart and looking for any damaged or non-responsive buttons. If this doesn't solve the problem, you can try reprogramming the fob, or getting an entirely new one.
It is recommended to consult an auto dealer in your area or a locksmith prior buying a replacement keyfob on the internet to ensure it's compatible with the security system of your vehicle. There are a variety of aftermarket key fobs available less expensive, but it's crucial to research the brands and read reviews before trying to program them. While some fobs can be replaced by a reputable locksmith others require specialized equipment for programming that can only be used by a car dealer or auto technician.