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

Over time, key fobs could have issues, such as a malfunction. While some issues may require professional attention, the majority can be fixed at home.

The first step is generally to replace the battery. Most fobs use flat watch-style batteries that are readily available in hardware stores or auto parts stores.

Dead Battery

If the battery for a key fob fails, it can be a major inconvenience, especially if you're away from home. However, there are options to get back on the road when your car's keyless entry isn't working.

The first thing you should check is to see if the buttons on the key fob still work. If they do, the issue may be with the car's locks instead of the fob.

If your keys don't work try looking for a key slot with a mechanical lock concealed in the trim of your door handle or on another part of the car (consult the owner's manual). Insert the mechanical key and try again. If this doesn't work certain cars come with an app that lets you unlock the doors remotely. FordPass Connect MyChevrolet Mobile App, myMazda apps, for example allow owners to open their doors using smartphones. These apps charge a monthly subscription fee.

Also, make sure that your key fob doesn't drain the batteries of your car by sitting on them. A dead fob can drain your battery quickly particularly if it's used to control the TV or phone while you are watching.

The key fob should be held right to the car's start button may cause an ignition key fob with an empty battery. It's a simple fix that can save you a trip to the dealer or to select Interstate All Battery Center locations.

If your key fob key repair near me won't work, you can test it in a vehicle with a push-button starter. If it doesn't work, you may need to replace the fob battery. This is why it's a good idea keep a spare key fob in the bag or purse.

Damaged Buttons

It's possible that the key fob has a damaged button. The key fob has a circuit with "contact pads" that are covered with an electrically conductory film. The film wears away over time. This wear can cause your fob to react less quickly, or not respond at all.

The contact pad on the car keyfob is easily replaced with a flat-head screwdriver. However, if the key fob is severely damaged or smashed in any way, it might be more difficult to open the case, and you'll be required to take the fob to an auto shop for repair.

It's not uncommon for a key fob be dropped, trampled on or exposed to water. All of these incidents can cause physical damage, such as breaking the keys and snapping them.

This can also cause internal damage to the fob that could cause malfunction. It is a good idea, therefore, to always carry a spare fob in your purse or pocket in the event that the one you currently have is damaged.

If the buttons on your key fob aren't working to the extent they should, you should first make sure the battery is in good condition. Be aware that key fobs aren't any special type of electronic device - most of them run on the same two-dollar batteries that are used in hearing aids and watches and are available at drug stores, hardware stores, and on the internet.

If the battery is good the buttons could be worn or dirty. You can easily clean them with a damp cloth. If they're still not responding, you can try a different type of key fob to determine if the issue is with yours, or with a specific type of car key fob key repair near me. If the other key fob works, then yours may need to be reset or replaced.

Reprogramming

The hidden world of car key fobs is much more intricate than what some myths would suggest. The basic fobs work by using unique radio frequency signals that are assigned to specific cars. The fobs need to be correctly programmed to unlock and start the vehicle. Unfortunately, reprogramming a fob isn't as simple as pressing a few buttons and with a few exceptions, it needs to be handled by a dealer.

Refer to the owner's manual for more detailed instructions. Some manufacturers, such as Mercedes, use proprietary technology that ensures only the dealership 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 before selecting the right shop.

Certain models of cars will wipe out all other fobs after they've been reprogrammed, which means you'll need any additional fobs professionally programmed. This is a costly proposition particularly if you're down to one functioning fob. It's always recommended to have at least one spare mechanical key that you can use to open the doors and trunk, even if it won't start the car.

If you decide to try and reprogram your fob yourself, be prepared for a frustrating journey. There are countless guides on the internet that promise success but you're likely to be disappointed. Many of these guides were created by people who have no experience in this area 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 a false claim.

The majority of key fobs are held by a plastic clip which is easy to remove, however, the battery is within the circuit board, which means you'll need to carefully pull it out with a tool. You should be able to find the button cell battery. It's typically an insignificant battery for watches that is available at most pharmacies or home improvement stores. It's typically simple to replace the battery. Before replacing the whole device, you should try it first.

Replacement

There are several methods to fix a broken or non-functioning car key fob. A quick fix can be as easy as replacing the battery or reprogramming the key fob, however a more extensive repair may be required. It's also beneficial to keep a spare fob in the event that one is lost or stolen.

Modern key fobs are more expensive and difficult to replace because they contain the physical key along with electronics. Certain "smart" fobs even have a built-in remote starter. Therefore, it's important to know that it can take up to an hour to get a replacement key fob cut and programmed for your vehicle.

Fobs utilize a small radio transmitter mounted on a circuit board to communicate with the car's receiver. By pressing a button the transmitter sends an RF signal unique to the car key repair company's receiver. The receiver recognizes the signal and checks it against the preprogrammed codes. This lets the driver unlock the car and begin it from a distance without putting the key in the ignition or turning a lock.

If your fob's buttons aren't working or responding intermittently, they could have been damaged by water. You can fix the fob if you take it apart and look for buttons that are not responsive or broken. If this doesn't resolve the problem, you can try reprogramming the fob, or purchasing another one.

It is recommended to consult an auto dealer in your area or a locksmith prior purchasing a replacement keyfob online to ensure it's compatible with the security system of your vehicle. You can find aftermarket fobs less expensive, but it's crucial to research the brands and read reviews prior to attempting to program them. While certain fobs can be repaired by a reputable locksmith, others require special equipment for programming that can only be used by a vehicle dealer or auto technician.