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. While some issues may require professional attention, the majority can be fixed at home.
Change the battery is often the first step. The majority of fobs have flat watch-style batteries which are easily found in hardware stores or auto parts stores.
Dead Battery
If the battery for a key fob dies, it can be a major inconvenience, especially if you're away from home. There are methods to get your vehicle back on the road in case you're keyless entry system isn't working.
The first thing to test is to see if the buttons on the fob still work. If they do, then the problem may lie with the car's locks instead of the fob.
If your keys don't work, look for a key slot with a mechanical lock located in the trim of your door handle or on another part of the vehicle (consult the owner's manual). Insert the mechanical key and try again. If this doesn't unlock the door, some cars have an application that lets you unlock the door remotely. For example, the FordPass Connect app, the myChevrolet mobile app and myMazda app allow owners to unlock their doors using their smartphones. However, these apps have a monthly fee.
You should also check whether your key fob won't drain the batteries of your car by resting on them. A dead key fob can drain your battery fast especially if it's used to control the TV or phone while you're watching.
Holding the key fob to the car's start button could cause the key fob that has a low battery. It's a quick fix that will save you a trip to the dealership or to select Interstate All Battery Center locations.
You can also determine whether your key fob actually dead by testing it in a different vehicle that has the push-button ignition. If it doesn't work it's likely that the battery needs replacement. It's a good idea keep an extra 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 are damaged. The key fob may contain circuit boards with "contact pads" for each button. These tiny pads are coated with an electricity conducting film that wears away over time. The wear may cause your fob to react less quickly, or not to respond at all.
The good news is that the pad on a car key fob is simple to replace and is done with the help of a simple flathead screwdriver. If the case is damaged or badly smashed it will be difficult to open. You'll have to take it to an auto shop to have the fob repaired.
It's not uncommon for keys to be dropped on hard surfaces, tripped on, or exposed to water. car key repair company of these can cause physical damage to the keys, which could result in them breaking or snapping them.
This can also cause internal damage to the fob, which could result in an issue. It is a good idea, that's why you should always carry a spare fob in your purse or in your pocket in case the one you currently have breaks.
If your key fob's buttons aren't working as they should, you should first verify that the battery is in good condition. Be aware that key fobs don't come with a particular kind of electronic device - most of them run on the same two-dollar batteries that are used in watches and hearing aids, which are readily accessible at drug stores, hardware stores, and even online.
If the battery is in good condition, it's likely that the buttons are dirty or worn out and can be cleaned using a damp cloth to wipe them down. If they're still not responding, test a different key fob to determine if the problem is with yours or a specific kind of car key fob. If the other key fob is working, then yours might need to be reprogrammed or replaced.
Reprogramming
The secret world of car keys fobs is more complex than the myths that surround it suggest. Basic fobs operate on radio frequency signals unique to each car. The fobs need to be correctly programmed to unlock and begin the vehicle. Reprogramming a key fob is not as simple as pressing a few keys. It is usually handled by the dealer.
Check the owner's manual for more detailed instructions. Certain manufacturers, like Mercedes, use proprietary technology that guarantees only the dealership can create a new fob and re-sync it to your vehicle. However, some independent shops can provide this service as well, so be sure to check reviews and prices before selecting the shop.
Certain car models erase all other fobs after they've been reprogrammed, which means you'll need to get any additional fobs professionally programmed as well. This can be costly especially if you're only just one functional fob. It's always recommended to have a backup mechanical key that you can use to open the trunk and doors, even if it won't start the car.
If you do decide to attempt to reprogram your fob yourself, be prepared for a frustrating journey. There are many guides online that promise success but you're likely to be disappointed. Many of these guides are created by people who have no experience in this area and often are founded on unsubstantiated claims. Some of them even state that you can program your own car key fob in just a few clicks, which is very confusing.
Most key fobs are secured by a plastic clip which is easy to remove, but the battery is inside the circuit board, and you'll have to carefully pry it out with a tool. Once you've gotten inside, you'll be able to find the button cell battery, which is typically a small watch battery that can be purchased in most pharmacies or home improvement stores. Replacing the battery is usually simple, and it's always worthwhile to try this first before replacing the entire device.
Replacement
If your car key fob has been damaged or fails to function it is crucial to know there are a few ways to remedy the problem. A quick fix can be as simple as replacing the battery or reprogramming the key fob, however a more extensive repair may be needed. It's also beneficial to have a spare key fob in case one is lost or stolen.
Modern key fobs are more expensive and more difficult to replace since they have the physical key along with electronic. Some "smart fobs" include remote starters. As such, it's important to know that it can take up to an hour to have an alternative key fob cut and programmed for your vehicle.
Fobs communicate with the car receiver using a tiny radio transmitter on circuit boards. When you press a button, the transmitter transmits an RF signal unique to the car receiver. The receiver is able to recognize and compare the signal with preprogrammed codes. you can try this out lets the driver unlock the vehicle and start 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 could have been damaged by water. You may be able to fix the fob by disassembling it and examining it for broken or unresponsive buttons. If this does not solve the issue, try reprogramming the fob or purchasing a new fob.
You should 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. Aftermarket fobs can be cheaper however, you must study the brands and read reviews prior to attempting to program them yourself. Some fobs can be changed by a locksmith who is reputable and other models require programming equipment that only a technician in the automotive industry or dealer can utilize.