7 Things About Car Key Fob Repair You'll Kick Yourself For Not Knowing
Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Key fobs can have issues with time, like an inability to function. Some issues may need professional attention, however many can be fixed at home.
The battery replacement is usually the first step. Most fobs are powered by flat watches-style batteries that are easily found in hardware or auto parts stores.
Dead Battery
It can be a major issue when a key fob's battery dies. This is especially true when you're away from home. However, there are options to get back on the road even if your car's keyless entry doesn't work.
The first thing to check is if the buttons on the fob are working. If they do, then the issue could be in the locks of your car instead of the fob.
If your keys won't unlock, you may find an electronic slot in the trim around the door handles or elsewhere on your car (consult the owner's manual). Insert the mechanical key and try again. If this doesn't unlock the door, certain cars have an application that lets you unlock the door remotely. FordPass Connect, myChevrolet Mobile App and myMazda apps, for example, allow owners to unlock their doors using smartphones. However, these apps require a monthly cost.
Also, you should ensure that your key fob isn't draining the car's battery by being plugged into it. A dead fob will drain your battery fast, especially if it is used to control the TV or phone while you are watching.
A key fob that's low on battery may be activated by bringing it until you hit the start button. It's a simple fix that can save you a trip to the dealership or select Interstate All Battery Center locations.
You can also determine whether your key fob actually dead by trying it in another vehicle with push-button ignition. If it doesn't work it's likely that the battery requires replacement. This is why it's a good idea to keep a spare key fob in a purse or backpack.
Damaged Buttons
It's possible that the key fob is damaged and has a button. The key fob has an electronic circuit that has "contact pads" which are covered by an electrically conductory film. The film wears away over time. This wear can cause your fob to respond slower, or not respond at all.
The good news is that the contact pad inside the car key fob is simple to replace and can be done so with the help of a flathead screwdriver. However, if the key fob is badly smashed or harmed in any way, it could be more difficult to remove the case, and you'll have to take the fob into an auto shop for repair.
It's not unusual for a key fob to be dropped on hard surfaces, walked on or exposed to water. These events can cause physical damage to the keys, which could result in them breaking or snapping them.
This could also cause internal damage to the fob and lead to a malfunction. This is why it's recommended to keep a spare key fob in your wallet or pocket in case you accidentally 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 working condition. Keep in mind that key fobs don't come with a particular type of electronic device - most of them run on the same two-dollar batteries used in hearing aids and watches, which are readily available at drug stores, hardware stores, and online.
If the battery is in good condition it is possible that the buttons are worn or dirty. You can easily clean them with a damp cloth. If the buttons do not work, you can test a different car key fob. This Web page will help you determine if the problem is yours or a specific model. If the other fob works then it's likely your key fob needs to be reset or even replaced completely.
Reprogramming
The secret world of car keys fobs is more complex than the myths that surround it suggest. Basic fobs function using radio frequency signals that are specific to each vehicle. The fobs have to be programmed to allow unlocking and starting the vehicle. Unfortunately it's not as easy as pressing a few buttons, and with a few exceptions, it has to be done by the dealer.
The procedure for reprogramming the fob is dependent on the manufacturer and model year of your vehicle It is therefore essential to read the owner's manual for step-by-step instructions. Some manufacturers, like Mercedes, use proprietary technologies that only dealerships are capable of creating a brand new key fob and then resync it to your vehicle. Some independent shops may offer this service, so be sure to read reviews and prices prior to choosing the right shop.
Some car models will erase other fobs when they are changed. This means that you'll have to have any extra fobs programmed by a professional. This can be costly, especially if you're just one functional fob. It is always advisable to have at least one spare mechanical key you can use to unlock the trunk and doors even if it's not able to start the car.
If you decide to try and reprogram your fob on your own be prepared for a gruelling journey. You'll be disappointed by the numerous online guides that promise success. Many of these guides were written by individuals with no experience and are based on unsubstantiated statements. Some of these guides claim that you can program your car's key fob with just a few clicks. This is misleading.
The battery is typically held in place with clips made of plastic, which can be removed easily. However, the circuit board contains the battery, and you will need to carefully remove the battery using an instrument. Once you get inside, you should be able to find the button cell battery, which is typically a tiny watch battery that can be purchased in most pharmacies or home improvement stores. It's generally easy to replace the battery. Before replacing the entire unit, you can try replacing the button cell first.
Replacement
There are a variety of methods to fix a broken or malfunctioning car key fob. It's as easy as replacing the battery or changing the program on the key fob, however a more extensive repair may be needed. A spare fob can be useful in the event one is lost or stolen.
Modern key fobs are more expensive and more difficult to replace because they contain a physical key as well as the electronic. Some "smart" fobs include a remote starter built-in. It's important to be aware that it can take up to an hour to cut and program the replacement fob to your vehicle.
Fobs communicate with the car's receiver using a tiny radio transmitter on a circuitboard. By pressing a button, the transmitter emits an RF signal that is unique to the car's receiver. The receiver recognizes and compares the signal with preprogrammed codes. This allows the driver to start the car from a distance without having to put the ignition key in.
If the buttons on your key fob fail to respond or function intermittently, it can indicate that they've been damaged by water or other causes. You can repair the fob if you take it apart and look for buttons that are not responsive or broken. If this does not solve the problem, try reprogramming it or purchasing a new fob.
Before you purchase a replacement fob on the internet, consult an expert locksmith or your local dealer to confirm that it is compatible with your vehicle's security systems. You can find aftermarket fobs less expensive, but it's crucial to research the brands and read reviews prior to attempting to program them. While some fobs can be replaced by a trusted locksmith, others require specialized programming equipment that can only be used by a vehicle dealer or auto technician.