Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working
Over time, key fobs can be affected by issues such as loss of functionality. Certain issues may require professional attention, however many are fixable at home.
Change the battery is often the first step. Most fobs utilize flat watch-style batteries which are easily found at auto parts stores.
Dead Battery
It can be a major inconvenience when the battery of a key fob is dead. This is especially the case if you are away from home. Fortunately, there are ways to get back on the road even if your vehicle's keyless entry system isn't working.
One of the first things you should examine is whether the buttons on the key fob work. If they do not then the issue could be in the car's locks.
If your keys don't work, look for a mechanical key slot hidden in the door handle trim or in another location on the vehicle (consult the owner's manual). Insert the mechanical key and try again. If this doesn't unlock the door, some vehicles come with an app that allows you to unlock it remotely. For instance the FordPass Connect app, myChevrolet mobile app, and myMazda app allow owners to unlock their doors using their smartphones. However, these apps are subject to a monthly cost.
Also, make sure that your key fob doesn't drain the batteries of your car by sitting on them. 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 just low on battery can be activated by bringing it up to the start button. It's a simple fix that will save you a trip to the dealership or even select Interstate All Battery Center locations.
If your key fob does not work You can test it in a car with a push-button starter. If it doesn't work, you might need to replace the battery in your fob. It's a good idea to keep a spare key fob in your bag or purse.
Damaged Buttons
It's possible that the key fob has a damaged button. Your key fob likely contains circuit boards with "contact pads" for each button. These little pads are coated with a conductor of electricity which wears down over time. This wear could make your fob respond less or not at all.
The pad that contacts a car keyfob can be easily replaced using the flat-head screwdriver. However, if the key fob is badly damaged or smashed in any way, it might be more difficult to remove the case, and you'll be required to take the fob into an auto repair shop to be repaired.
It's not unusual for a key fob to being dropped, trampled or exposed to water. All of these incidents can result in physical damage, like bending and snapping the keys.
It can also cause internal damage to the fob, which could lead to a malfunction. This is why it's an ideal idea to keep an extra key fob in your wallet or pocket in the event that you damage the one you own.
If the buttons on your key fob aren't responding as they should, first make sure the battery is in good condition. Be aware 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 that are readily accessible at hardware stores, drug stores, and online.
If the battery is in good condition it's likely that the buttons are just dirty or worn down and can be easily cleaned using a damp cloth to clean them. If they're still not responding, try a different type of key fob to see whether the problem is related to yours or with a particular type of car key fob. If the other fob functions, it's likely that the key fob you have needs to be reprogrammed, or possibly replaced entirely.
Reprogramming
The world of fobs for car keys is more complex than the myths that surround it suggest. Basic fobs work on radio frequency signals specific to each car. The fobs need to be correctly programmed to unlock and begin the vehicle. Unfortunately the process of reprogramming a fob isn't as simple as pressing a few buttons and with only a few exceptions it must be handled by a dealer.
The procedure for reprogramming the fob depends on the make and model year of your car and it's essential to read the owner's manual for step-by-step instructions. Some manufacturers, such as Mercedes utilize proprietary technology that makes sure only the dealership can create an entirely new fob and then sync it to your vehicle. However, some independent shops can offer this service as well so make sure to review reviews and prices prior to choosing the shop.
Some car models will erase other fobs when they're programmed again. This means that you'll have to have additional fobs programmed by professionals. This is a costly proposition particularly if you're just one functional fob. Even if the mechanical key won't start the vehicle, it's a great idea to have a backup key that can open the trunk and doors.
Be prepared for a gruelling experience if you decide to reprogram your fob yourself. There are many guides online that promise to work however, you're likely to be disappointed. Many of these guides were written by people with no experience and are based on unsubstantiated assertions. Some of these guides claim that you can program your car's key fob with just only a few clicks. This is a false claim.
The battery is usually secured with a plastic clip, which can be removed easily. However the circuit board houses the battery, so you will need to carefully remove the battery using the aid of a tool. You should be able find the button cell battery. It's usually an insignificant battery for watches that is available at most home improvement or pharmacies. It's usually easy to replace the battery. Before replacing the entire unit, you can try replacing the button cell first.
Replacement
There are several ways to fix a damaged or damaged car key fob. It's as simple as replacing the battery or reprogramming the key fob, however a more extensive repair might be required. It is also helpful to keep a spare fob in the event that one is lost or stolen.
Modern key fobs are more expensive and difficult to replace since they have an actual key as well as the electronic. Some "smart fobs" include a remote starter. It's important to be aware that it can take an hour or more to cut and program a replacement fob for your vehicle.
Fobs communicate with the car receiver using a tiny radio transmitter that is mounted on circuit boards. Pressing an appropriate button will activate the transmitter, which sends an RF signal unique to the car's receiver. The receiver detects the signal and verifies it against preprogrammed codes. This allows the driver to start the car from a distance, without the need to insert the key in the ignition.
If your fob's buttons aren't working or responding intermittently, they may be damaged by water. You may be able to repair the fob by taking it apart and looking for any damaged or unresponsive buttons. If key car repair The Keylab doesn't resolve the issue, you can try reprogramming your fob or purchasing another one.
You should check with a local auto dealer or a locksmith before buying a replacement keyfob on the internet to ensure it is compatible with the security system of your vehicle. You can find aftermarket fobs cheaper, but it's essential to research the brands and read reviews before trying to program them. While some fobs can be replaced by a reputable locksmith other models require special equipment to program them that can only be used by a professional auto dealer or auto technician.