Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs could be affected by issues such as loss of functionality. While some issues might require expert attention, most can be resolved at home.
The first step is usually to replace the battery. Most fobs are powered by flat watch-style batteries, which can be easily found in hardware or auto parts stores.
Dead Battery
If a key fob battery dies, it can be a huge inconvenience particularly if you're away from home. There are ways to get your car back on the road in case your keyless entry system has stopped working.
The first thing you should check is if the buttons on the fob still work. If they don't then the issue could be with the car's locks.
If your keys won't unlock, there may be an electronic slot in the trim around your door handles or on your vehicle (consult the owner's manual). Insert the mechanical key and try again. If this fails, some cars have an app that lets you unlock doors remotely. For example, the FordPass Connect app, the myChevrolet mobile app, and myMazda app allow owners to open their doors using their smartphones. However, these apps are subject to a monthly cost.
Suggested Looking at is also important to ensure that your key fob isn't draining the car's battery by resting on it. A dead key fob will quickly drain your battery, especially when you utilize its remote feature while watching TV or speaking on the phone.
A key fob that's just low on battery can be activated by holding it right up to the start button. It's a simple solution that could save you a trip to the dealer or even select Interstate All Battery Center locations.
If your key fob does not work try testing it in a vehicle with an electronic starter button. If it doesn't work, the fob battery probably requires replacement. This is why it's a good idea to keep an extra key fob in your bag or purse.
Damaged Buttons
If your key fob doesn't have the ability to open doors or start the car remotely, it's possible that one or more of its buttons is damaged. Your key fob is equipped with a circuit with "contact pads" which are covered by an electrically conductory film. The film wears off over time. This wear can cause your device to respond less quickly, or not respond at all.
The good news is that the pad in the car key fob is easy to replace, and it can be done by using an easy flathead 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 have the fob repaired.
It's not common for a key fob be dropped, trampled on or exposed to water. These incidents can result in physical damage, like breaking and snapping keys.
This can also affect the internals of your fob and could cause malfunction. It's a good idea, therefore, to always carry an additional fob in your wallet or in your pocket in case the one you're using is damaged.
If your key fob's buttons aren't responding to the extent they should, you should first check to make sure the battery is in good working condition. Keep in mind that key fobs aren't any special kind of electronic device; the majority of them use the same two-dollar batteries that are used in hearing aids and watches that are readily accessible at drug stores, hardware stores, and on the internet.
If the battery is working it's likely that the buttons are worn down or dirty and can be easily cleaned using a damp cloth to wipe them down. If the buttons don't work, you could try another car key fob. Suggested Looking at will help determine if the problem is yours or a specific model. If the other fob functions, it's likely that your key fob needs to be reset or even replaced completely.
Reprogramming
The secret world of car keys fobs is much more complex than the myths that surround it suggest. The basic fobs function on unique radio frequency signals that are assigned to specific cars. The fobs have to be programmed correctly in order to be able to unlock and start the car. Unfortunately remote key repairs 's not as easy as pressing a few buttons, and with only a few exceptions it needs to be handled by a dealer.
The procedure of reprogramming a fob depends on the make and model year of the car you own, so it's important to refer to the owner's manual for step-by-step instructions. Some manufacturers, such as Mercedes utilize proprietary technology that guarantees only dealerships can design a new fob and re-sync it to your vehicle. However, some independent shops can provide this service too, so be sure to check reviews and prices before choosing the shop.
Certain car models erase other fobs when they are programmed again. This means that you'll need to have any additional fobs programmed by a professional. This can be costly especially if the fob has stopped working. It's always wise to have at least one spare mechanical key that you can use to open the doors and trunk, even if it won't start the car.
If you decide to try and reprogram your fob on your own be prepared for a frustrating journey. You'll be disappointed by numerous guides on the internet that promise success. Many of these guides were written by people with no experience and are based on unsubstantiated statements. Some of these guides claim that you can program your car's key fob yourself with the click of a button. This is misleading.
The battery is usually secured with an elastic clip that is easily removed. However the circuit board houses the battery, so you will need to carefully remove the battery with a tool. Once you get inside, you should be able locate the button cell battery, which is typically a small watch battery that is available in most pharmacies or at home improvement stores. It's typically simple to replace the battery. Before replacing the whole device, you should try it 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. It is also helpful to keep a spare fob in case one gets lost or stolen.
The majority of modern key fobs have an incredibly small physical key in addition to the electronics, making them both pricier and more complex to replace than traditional keys. Certain "smart" fobs include a remote starter built-in. It's important to be aware that it can take an hour or more to cut and program an alternative fob for your vehicle.
Fobs make use of a tiny radio transmitter on circuit boards to communicate with the car's receiver. Pressing a button activates the transmitter, which sends an RF signal that is unique to the car's receiver. The receiver detects the signal and validates it against the preprogrammed codes. This allows the driver to unlock the vehicle and begin it from a distance without inserting the key into the ignition or turning a lock.
If the buttons on your key fob do not respond or function intermittently, it can indicate that they've 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 issue, you can try reprogramming it or purchasing a new fob.
You should check with a local auto dealer or a locksmith before purchasing a replacement keyfob to ensure that it is compatible with the security system of your vehicle. The fobs from the aftermarket can be less expensive however, you must look into the brands and read reviews prior to attempting to program them yourself. Certain fobs can be programmed by an accredited locksmith and other models require programming equipment that only a technician in the automotive industry or dealer can use.