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Car Key Fob Repair - How to Get Back on the Road Even If Your Keyless Entry isn't Working

Over time, key fobs may experience problems such as loss of functionality. Certain issues may require professional attention, but many are fixable at home.

Change the battery is often the first step. Most fobs run on a flat watch-style batteries, which can be easily found at hardware stores or auto parts stores.

Dead Battery

If the battery for a key fob dies, it can be a huge inconvenience, especially if you're away from home. Fortunately, there are ways to get back on the road if your car key fob repair service's keyless entry isn't working.

The first thing to test is to see if the buttons on the key fob are still working. If they aren't then the issue could be with the car's locks.

If the keys won't unlock, look for a mechanical key slot located in the door handle trim or somewhere else on the vehicle (consult the owner's manual). Insert the mechanical key, and try again. If this doesn't unlock the door, certain cars have an application that lets you unlock it remotely. FordPass Connect MyChevrolet Mobile App, myMazda apps, for example, allow owners to unlock their doors using smartphones. However, these apps are subject to a monthly fee.

You should also check that your key fob does not drain your car key repairs's batteries by resting on them. A dead fob can quickly drain your battery, particularly when you use its remote car key repairs features while watching TV or talking on the phone.

A key fob that's low on battery can sometimes be started by holding it right up to the start button. This simple fix can save you from a trip to your dealer or certain Interstate All Battery Centers.

If your key fob doesn't work try testing it in a vehicle that has an ignition button. If it fails the battery of the fob requires replacement. This is why it's a good idea to keep a spare key fob in a purse or backpack.

Damaged Buttons

If your key fob is unable to open doors or start your vehicle remotely, it's possible that one or more of its buttons is damaged. Your key fob likely contains 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 at all.

The good news is that the contact pad inside the key fob of a car is easy to replace, and can be done so with the help of an easy flathead screwdriver. If, however, the key fob has been badly smashed or harmed in any way, it may be more difficult to open up the case, and you'll have to take the fob into an auto repair shop for repairs.

It's not uncommon for a key fob to be dropped on hard surfaces, tripped on, or exposed to water. These incidents can cause physical damage, including bending and snapping the keys.

It can also cause internal damage to the fob that could result in malfunction. It's a good idea so, always keep an extra fob in your purse or pocket in case the one you currently have is damaged.

If the buttons on your key fob aren't responding to the extent they should, you should first make sure the battery is in good working condition. Remember that key fobs don't come with a particular kind of electronic device; most of them run on the same batteries for two dollars that are used in hearing aids and watches and are accessible at drug stores, hardware stores, and online.

If the battery is in good condition it's likely that the buttons are just dirty or worn out, and can be easily cleaned using a damp cloth to wipe them down. If they're still not responding, you can test a different key fob to see whether the problem is related to yours or a specific kind of car key fob. 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 repair fobs is more complex than the myths that surround it suggest. The basic fobs operate using radio frequency signals that are assigned to specific vehicles. The fobs must be properly programmed in order for them to unlock and start the vehicle. Unfortunately it's not as easy as pressing a few buttons and with a few exceptions, it needs to be handled by the dealer.

The process of reprogramming a fob depends on the make and model year of your vehicle, so it's important to read the owner's manual for step-by-step instructions. Some manufacturers, such as Mercedes have their own proprietary technology that ensures only dealers can create a new fob and re-sync it to your vehicle. Some independent shops may also offer this service, so check reviews and prices prior to choosing the right shop.

Certain models of cars will erase all other fobs when they're programmed, meaning you'll need any additional fobs programmed professionally. This is a costly proposition, especially if you're just one functional fob. It's always recommended to have a spare mechanical key that you can use to open the doors and trunk even if it's not able to start the car.

Be prepared for a difficult experience if you choose to reprogram your fob yourself. You'll be disappointed by numerous online guides that promise success. A lot of these guides were written by people with no knowledge of this field and often are based on unsubstantiated claims. Some of these guides claim that you can easily program your car key fob yourself with the click of a button. This is misleading.

The majority of key fobs are held in place by a clip made of plastic that is easy to remove but the battery is inside the circuit board, which means you'll have to carefully pry it out using a tool. Once you've gotten inside, you'll be able locate the button cell battery, which is usually a small watch battery that is available in most pharmacies or home improvement stores. Removing the battery is typically an easy process, but it's always a good idea to test this first before replacing the entire device.

Replacement

If your car key fob is damaged or fails to function, it's important to know there are several options to address the issue. 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 is also helpful to keep a spare fob in case one gets lost or stolen.

Modern key fobs are more expensive and more difficult to replace since they have the physical key and electronics. Some "smart fobs" even come with remote starters. As such, it's important to understand that it can take up to an hour to get a new key fob cut and programmed for your vehicle.

Fobs communicate with the car remote key repair's receiver by using a small radio transmitter on a circuitboard. Pressing the button triggers the transmitter, which sends an RF signal that is unique to the car's receiver. The receiver detects the signal and checks it against the preprogrammed codes. This allows the driver to start the vehicle from a distance without having to put the key in the ignition.

If the buttons on your key fob do not respond or work sporadically, it can indicate that they've been damaged by water or other factors. You could be able to fix the fob by taking it apart and looking for any damaged or non-responsive buttons. If this doesn't resolve the issue, try reprogramming it or purchasing an entirely new fob.

Before buying a replacement key fob on the internet, consult a professional locksmith or your local dealer to confirm that it is compatible with your vehicle's security systems. The fobs from the aftermarket can be less expensive, but you should look into the brands and read reviews before attempting to program them yourself. 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.