14 Questions You Shouldn't Be Anxious To Ask Car Key Fob Repair
TheKeyLab - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Key fobs can experience problems over time, including the loss of functionality. Certain issues may require professional attention, but most are fixable at home.
The first step is typically to replace the battery. Most fobs utilize flat watches that are easy to find at auto parts stores.
Dead Battery
It can be a real problem when the battery of a key fob is dead. This is particularly true when you're away from home. Fortunately, there are ways to get back on the road even if your car's keyless entry isn't working.
The first thing you should check is if the buttons on the fob are still working. If they do, the issue could be in the locks of your car instead of the fob.
If the keys aren't unlocking try looking for a mechanical key slot concealed in the door handle trim or on another part of 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 allows you to unlock doors remotely. FordPass Connect MyChevrolet Mobile Application and myMazda apps, for example allow owners to open their doors with their smartphones. These apps do charge monthly subscription fees.
It is also important to ensure that your key fob isn't draining your vehicle's battery by being plugged into it. A dead fob can drain your battery quickly especially if it's used to control your phone or TV while you are watching.
A key fob that's low on battery can sometimes be activated by holding it up to the start button. This simple fix can save you from having to visit your dealer or certain Interstate All Battery Centers.
You can also determine if your key fob is actually dead by trying it in a different vehicle that has push-button ignition. If it fails, the fob battery probably needs replacement. It's a good idea keep a spare key fob in your bag or purse.
Damaged Buttons
If your key fob doesn't have the ability to unlock doors or start the car remotely, it's likely that one or more of its buttons is damaged. Your key fob contains an electronic circuit that has "contact pads" which are covered by an electrically conductive film. The film wears away over time. The wear may cause your device to respond less or not at all.
The good news is that the pad on a car key fob can be replaced easily, and can be done so by using a simple flathead screwdriver. If the case is damaged or badly smashed it may be difficult to open. It is necessary to take it to an auto repair shop to get the fob repaired.
It's not uncommon for a key fob to be dropped on hard surfaces, walked on or exposed to water. All of these can cause physical damage to keys, such as bending or snapping them.
This can also cause internal damage to the fob that could result in malfunction. This is why it's always recommended to keep an extra key fob in your pocket or wallet in case you accidentally break the one you already have.
Check the battery first If your key fob's buttons are not responding in the way they should. Be aware that key fobs aren't any special kind of electronic device; they're typically powered by the same two-dollar batteries used in hearing aids and watches, which are readily accessible at drug stores, hardware stores, and even online.
If the battery is good, the buttons may be dirty or worn out. You can easily clean them with a damp cloth. If the buttons don't work, you can test a different car key fob. This will help determine if the problem is yours or a specific model. If the other key fob works, then yours might need to be reprogrammed or replaced.
Reprogramming
The secret world of car key fobs is more complicated than the myths suggest. The basic fobs function using radio frequency signals that are assigned to specific vehicles. The fobs have to be programmed to unlock and begin the vehicle. Unfortunately it's not as simple as pressing a few buttons, and with only a few exceptions it has to be done 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 consult the owner's manual for step-bystep instructions. Certain manufacturers, like Mercedes utilize proprietary technology that guarantees only dealers can create an entirely new fob and then sync it with your vehicle. However certain independent shops provide this service as well, so be sure to look up reviews and prices prior to choosing the right shop.
Certain car models wipe out all other fobs after they've been changed, so you'll have to have any additional fobs professionally programmed as well. This is a costly proposition particularly if you're just one functional fob. It's always wise to have at minimum a spare mechanical key you can use to unlock the trunk and doors even if it's not able to start the car.
Be prepared for a difficult experience if you opt to reprogram your fob by yourself. There are numerous guides available online that promise success however, you're likely to be disappointed. A majority of these guides were written by people who have no experience and are based on unsubstantiated claims. Some of them even state that you can program your own car key fob in just a few clicks, which can be very misleading.
Most key fobs are held by a plastic clip that is easy to remove however, the battery is located inside the circuit board, and you'll need to carefully pry it out with a tool. Once you get inside, you'll be able locate the button cell battery which is usually a small watch battery that can be found at a variety of pharmacies or at home improvement stores. The replacement of the battery is generally simple, and it's always worthwhile to try this first before replacing the entire device.
Replacement
There are many ways to fix a damaged 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. It is also helpful to have a spare key fob in the event that one is lost or stolen.
Modern key fobs are more expensive and more difficult to replace due to the fact that they have an actual key as well as the electronic. Certain "smart" fobs also come with a remote starter. As such, it's important to know that it could take up to an hour to have an alternative key fob cut and programmed for your vehicle.
Fobs make use of a tiny radio transmitter that is mounted on circuit boards to communicate with the car's receiver. Pressing the button triggers the transmitter, and it transmits an RF signal unique to the car's receiver. The receiver is able to recognize and compare the signal with preprogrammed codes. This allows a driver to start the vehicle from a distance without the need to put the key in the ignition.
If your key fob buttons are not responding or working intermittently, they could be damaged by water. You can fix the fob by taking it apart and examine for buttons that are not responsive or broken. If this does not solve the issue, you can try reprogramming the fob or purchasing an entirely new fob.
It is best to check with a local auto dealer or a locksmith before purchasing a replacement keyfob to ensure it is compatible with the security system of your vehicle. There are many aftermarket fobs cheaper, but it's important to research the brands and read reviews prior to attempting to program them. While some fobs can be replaced by a reputable locksmith, others require specialized programming equipment that can only be used by a professional auto dealer or auto technician.