Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs can have issues, such as a malfunction. While some issues may require professional attention, the majority can be fixed at home.
The first step is generally to replace the battery. Most fobs use flat watches which are easily found in hardware stores or auto parts stores.
Dead Battery
It can be an incredibly issue when a key fob's battery goes out. This is especially true when you are far from home. There are solutions to get your vehicle back on the road in case your keyless entry system isn't working.
The first thing to test is if the buttons on the fob are still working. If they aren't then the issue could be in the car's locks.
If your keys don't work, look for a key slot with a mechanical lock located in the door handle trim or on another part of the vehicle (consult your owner's manual). Insert the mechanical key and try again. If this fails, some cars have an app that can unlock the doors remotely. For example, the FordPass Connect app, myChevrolet mobile app and myMazda app allow owners to open their doors using their smartphones. However, these apps require a monthly fee.
Also, you should 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 quickly, especially if it is used to control your phone or TV while you're watching.
A key fob that's low on battery can be activated by holding it until you hit the start button. This simple fix can save you from having to visit your dealer or Interstate All Battery Centers.
You can also find out whether your key fob is actually dead by testing it in a different vehicle that has push-button ignition. If it doesn't, you might need to replace the battery in your fob. This is why it's a good idea to keep an extra key fob in the bag or purse.
Damaged Buttons
If your key fob isn't able to unlock doors or start the vehicle remotely, it's possible that one or more of its buttons is damaged. Your key fob contains a circuit with "contact pads" that are covered with an electrically conductive film. The film wears away over time. This wear could cause your fob to respond slower or not at all.
The good news is that the pad in the key fob of a car is easy to replace, and it can be done by using a flathead screwdriver. If love it is severely damaged or smashed in any way, it could be more difficult to open up the case, and you'll be required to take the fob to an auto repair shop for repairs.
It's not uncommon for a key fob be thrown around, trampled upon, or exposed water. All of these events can cause physical damage, including bending and snapping the keys.
It could also alter the internals of the fob, which could lead to a malfunction. This is why it's an ideal idea to keep a spare key fob in your purse or pocket in the event that you damage the one you own.
If your key fob's buttons aren't responding to the extent they should, first verify that the battery is in good condition. Key fobs don't need an electronic device. They utilize the same battery for two dollars that is used in hearing aids and watches. The batteries are available in drug, hardware and online stores.
If the battery is functioning properly, the buttons may be dirty or worn out. You can easily clean them with a damp cloth. If they're still not responding, try a different key fob to determine whether the problem is with yours or a specific kind of car key fob. If the other key fob works, then yours might need to be reset or replaced.
Reprogramming
The secret world of fobs for car keys is more complicated than most myths suggest. Basic fobs work using radio frequency signals that are specific to each vehicle. The fobs must be properly programmed to unlock and start the vehicle. Reprogramming a key fob not as simple as pressing a few keys. It's usually done by the dealer.
Refer to car key repair company for more detailed instructions. Some manufacturers, such as Mercedes, use proprietary technology that ensures only dealers can create an entirely new fob and then sync it with your vehicle. Some independent shops may offer this service, so be sure to read reviews and prices prior to selecting a shop.
Certain models of cars erase all other fobs if they are changed. This means that you'll need to have any additional fobs programmed by professionals. This can be expensive especially if the fob isn't working anymore. It's always recommended to have at least one backup mechanical key that you can use to unlock the trunk and doors even if it doesn't start the car.
Be prepared for a frustrating experience if you choose to reprogram your fob yourself. There are numerous guides available online that promise to work however, you're likely to be disappointed. Many of these guides were created by people who have no experience in this area, and they're often founded on unsubstantiated claims. Some of these guides claim that you can program your car key fob yourself with only a few clicks. This is false.
The majority of key fobs are secured by a plastic clip that is easy to remove but the battery is inside the circuit board, so you'll need to carefully pry it out with a tool. Once you've got inside, you'll be able locate the button cell battery, which is usually a small watch battery that can be found at most pharmacies or at home improvement stores. It's generally easy to replace the battery. Before replacing the entire device, you should try it first.
Replacement
There are a variety of methods to fix a broken or non-functioning car key fob. An easy fix could be as easy as replacing the battery or programming the key fob but a more thorough repair may be required. A spare fob can be useful in the event one is stolen or lost.
The majority of modern key fobs have an incredibly small physical key in addition the electronics, making them both pricier and more difficult to replace than traditional keys. Some "smart fobs" even come with remote starters. It's important to understand that it can take an hour or more to cut and program an alternative fob for your vehicle.
Fobs utilize a small radio transmitter on a circuit board to communicate with the car's receiver. Pressing an appropriate button will activate the transmitter, and it transmits a unique RF signal to the car's receiver. The receiver recognizes the signal and verifies it against the preprogrammed codes. This allows drivers to start the car from a distance without having to put the ignition key in.
If the buttons on your key fob do not respond or work sporadically it could mean that they have been damaged by water or other factors. It is possible to repair the fob by taking it apart and examine for damaged or non-responsive buttons. If this does not solve the issue, try reprogramming it or purchasing an entirely new fob.
It is best to check with an auto dealer in your area or a locksmith before buying a replacement keyfob on the internet to ensure it is compatible with the security system of your vehicle. There are many aftermarket fobs 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 to program them that can only be used by a professional auto dealer or auto technician.