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 an inability to function. While some issues might require expert attention, most can be resolved at home.
The battery replacement is usually the first step. The majority of fobs have batteries with a flat design which are easily found in hardware stores or auto parts stores.
Dead Battery
If a key fob battery dies, it can be a major hassle 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.
One of the first things to check is to determine if the key fob's buttons still work. If they do, then the issue could be in the locks of your car instead of the fob.
If the keys won't unlock, look for a key slot with a mechanical lock hidden in the trim of your door handle or somewhere else on the car (consult your owner's manual). Insert the mechanical key, and try again. If this doesn't work certain cars come with an app that can unlock the doors remotely. FordPass Connect MyChevrolet Mobile App, myMazda apps, for instance let owners unlock their doors using their smartphones. These apps do charge a monthly subscription fee.
Also, you should ensure that your key fob isn't draining your car's battery by being plugged into it. A dead fob can quickly drain your battery, especially if you use its remote features while watching TV or speaking on the phone.
A key fob that's low on battery can be started by holding it until you hit the start button. It's a simple solution that could save you a trip to the dealership or even select Interstate All Battery Center locations.
If your key fob doesn't work try testing it in a vehicle with an ignition button. If it doesn't work, it could be necessary to replace the battery in your fob. This is why it's a good idea keep a spare key fob inside your bag or purse.
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" that are covered with an electrically conductor film. The film wears away over time. This wear could cause your fob to respond slower or not at all.
The pad that contacts car keys can be easily replaced with a flat-head screwdriver. If the case is damaged or badly smashed it may be difficult to open. You'll need to take it to an auto shop to have the fob repaired.
It's not unusual for a key fob to being dropped, trampled or exposed to water. These events can cause physical damage to the keys, which could result in them breaking or snapping them.
It could also affect the internals of your fob, which could lead to an issue. It is a good idea, therefore, to always carry an additional fob in your wallet or pocket in the event that the one you're using fails.
If the buttons on your key fob aren't responding as they should, first verify that the battery is in good working condition. Key fobs do not require an electronic device. They utilize the same battery for two dollars that is used in hearing aids and watches. They are sold at hardware, drug, and online stores.
If the battery is fine it's likely that the buttons are just worn down or dirty, and can be easily cleaned using a damp cloth to wipe them clean. If the buttons do not work, you can test a different car key fob. This 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 has to be reprogrammed, or even replaced completely.
Reprogramming
The secret world of car keys fobs is much more complex than many myths suggest. Basic fobs work with radio frequency signals that are specific to each car. The fobs have to be properly programmed in order for them to be able to unlock and start the vehicle. Unfortunately, reprogramming a fob isn't as simple as pressing a few buttons, and with very few exceptions it must be handled by the dealer.
The procedure for reprogramming the fob is based on the model and model year of your car It is therefore essential to read the owner's manual for step-bystep instructions. Some manufacturers, such as Mercedes have their own proprietary technology that guarantees only dealers can create the new fob and sync it with your vehicle. Some independent shops may also offer this service, so check reviews and prices prior to choosing a shop.
Certain models of cars will erase all other fobs after they've been changed, so you'll need to get any additional fobs programmed professionally. This is a costly proposition especially if you're only down to just one working fob. It is always advisable to have at minimum a spare mechanical key you can use to open the trunk and doors even if it doesn't start the car.
If you do attempt to reprogram your fob yourself, be prepared for a frustrating journey. key fob repairs 'll be disappointed with the countless online guides that promise success. A lot of these guides were written by people with no prior experience in this field and are often based on unsubstantiated claims. Some of them even state that you can program your own car key fob with just a few clicks, which can be very misleading.
Most key fobs are secured by a plastic clip that's easy to loosen, however, the battery is located inside the circuit board, and you'll need to carefully pry it out using a device. Once you've got inside, you should be able locate the button cell battery, which is typically a tiny watch battery that can be purchased at most pharmacies or home improvement stores. It's generally simple to replace the battery. Before replacing the whole unit, it's worth trying first.
Replacement
There are several ways to fix a broken or damaged car key fob. It may be possible to repair the issue quickly by replacing the battery or programming your key fob. However an extensive repair may be required. A spare fob is useful in the event one is stolen or lost.
Most modern key fobs include an incredibly small physical key, in addition to the electronics which makes them more expensive and more complex to replace than traditional keys. Some "smart" fobs come with a remote starter. It's important to understand that it can take an hour or more to cut and program the replacement fob to 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 unique to the car's receiver. The receiver is able to recognize and compare the signal to preprogrammed codes. This allows the driver to unlock the vehicle and begin it from a distance, without putting the key in the ignition or turning a lock.
If your fob's buttons aren't responding or working intermittently, they may be damaged by water. It is possible to fix the fob by disassembling it and inspecting for any broken or non-responsive buttons. If this doesn't solve the problem, you can try reprogramming the fob, or buying a new one.
It is best to check with a local auto dealer or a locksmith before buying a replacement keyfob on the internet to make sure it is compatible with the security system of your vehicle. The fobs from the aftermarket can be less expensive however, you must research brands and read reviews prior to trying to program them yourself. Certain fobs can be modified by a locksmith who is reputable and other models require programming equipment that only a technician in the automotive industry or dealer is able to utilize.