5 Lessons You Can Learn From Fob Key Repair

· 6 min read
5 Lessons You Can Learn From Fob Key Repair

Key Fob Replacement and Repair

Modern car key fobs are used often and are frequently abused. Sometimes just a simple repair or replacement is all it takes to get them back in good working good working order.

Most fobs run on a flat watch-style batteries. This can be found in hardware and auto parts stores. Before calling in a professional, do some of the DIY fixes.

Dead Key Fob Batteries

The key fob battery powers the remote function in your car. It also, with push-to-start vehicles it allows it to start your engine. It is therefore important to keep a functioning healthy and a good battery. When you're on the go, a dead key fob can be a huge problem. The good news is that a cheap, simple replacement is able to fix the issue quickly.

The most common indication that a battery on a key fob is dying is the decrease in signal strength and range. You might also be noticing that the buttons on your fob don't work or require extra effort to activate.

You can often find the latest key fob batteries in the auto parts section of a big box retailer or online. Typically, they are CR2032 or CR2025 batteries that are available in packs of two or more. However, it's a good idea to consult your owner's manual before you shop for the right battery for your fob. Some cars require a specific size or type that isn't always available at big-box stores. Be sure to check before purchasing.

Typically the battery is placed on the back of your key fob and is removed by tearing the case open using a flat-blade screwdriver. The battery will look like tiny coins and be labeled according to its size. Make sure to note the orientation of the plus and minus signs in order to insert the battery correctly. After  car key repair  has been replaced and the fob is closed, gently snap the two pieces of the fob back together. Then test the buttons.

If your key fob still isn't working after replacing the battery, it could have been deprogrammed. In this scenario you'll have to contact an expert locksmith, which will cost some more than replacing the battery in your key fob.

The skilled mechanics at YourMechanic are able to repair your key fob in the event that it is damaged or if the battery has died. Be sure to check out all of our services in your area and schedule an appointment today!

Weak Signals


If you find that your key fob isn't responding to buttons on the remote, it could be an indication of a problem with the signaling. Radio signals are used to send messages between your car and the key fob. Weak or inconsistent radio signals can result in poor performance and range.

Checking the battery level of your fob is a good idea, because it could significantly affect signal sensitivity. Resetting the settings on the fob can also aid in restoring a regular response. The process varies from vehicle to vehicle, so your owner's manual or call to the helpline of the manufacturer is likely to be the best source of information here.

Other factors can cause weak fob signals, for example, interference from other devices that operate on the same frequency as your key fob. Power lines, other key fobs, wireless communication devices, and even cellular networks can disrupt the RF (radio frequency) signals that your key fob utilizes to connect to the receiver inside your vehicle.

Physical damage to your keyfob can also interfere with the transmission of radio signal, resulting in lower performance and less range. A blown fuses, a damaged or cracked button, or a bent case on the fob can affect signal transmission and cause the remote not to respond.

There are some simple steps you can try to and resolve the issue of weak fob signals such as resetting the fob's settings or changing the battery. If, however, your fob is old and worn out, it's the time to replace it all over again.

Don't forget to make use of the spare remote that came with your car if your primary remote starts to fail. You should try this solution first to see if it can fix the problem before buying another remote. If not, it could be the perfect moment to call a professional auto locksmith. They will be able to determine the cause and recommend the best course of action.

Physical Damage

It's not common for key fobs to experience problems from time to time. Luckily, the majority of these problems are not serious or complex and can be fixed by following a few simple steps. It's recommended to keep spare batteries or another key fob in the event that one of your keys stops working.

A dead battery is the most common reason for a car keyfob not working. These tiny devices are powered by lithium-ion buttons or coin cell batteries. They are easily replaced and are available at most pharmacies and grocery stores. You can open your fob's case using a screwdriver with a flat head and gently pull out the battery that is in there. Replace the battery, making sure it's not damaged or loosened. Most fobs require batteries with CR2032 capacity. However, yours might require a different kind.

If your device loses its pairing, it can cease to respond to buttons. This could be due to a variety of factors, such as changing the batteries, but is generally simple for an auto Locksmith or your local dealer to fix.

If none of the methods above work, try this trick: unplug the batteries from the car and fob for a short period of time and then connect them in reverse order. This could trigger a restart within the system, and in some cases it will solve the issue without requiring any of the other steps.

Keep the fob out of water or other sources of damage while trying out new techniques. Fobs can be quite sturdy, but you need to take care with it if you want it to last as long as you can.

If none of the troubleshooting steps above help you, it may be necessary to replace your key fob. If yours has been dropped or tripped on, or subjected to other harsh environmental conditions it may be beyond repair and may require an upgrade. If this is the case, make sure to shop around for a deal prior to making your final decision.

Lost Fob

Even with the best of care keys to cars will occasionally stop working. If you lose yours, it could be a huge expense to replace it, especially if you don't have a spare. "You might end up paying $50 or more to get a new replacement from a dealer and get it programmed, as well as a new mechanical backup which could cost you at least another $100," says Mel Yu an automotive analyst with Consumer Reports.

A weak battery is one of the most common reasons for a keyfob to cease to function. You can try replacing the battery on your own If you are familiar with the procedure or get instructions from your owner's manual. If this doesn't resolve the problem, it's time to get help from an expert.

A locksmith can assist you to replace or locate the lost key fob. A locksmith will likely know the reason your fob stopped working in the first place. If your vehicle is an older model that has no built-in smart technology You can save money by finding the key number plate that is on your existing mechanical backup key (it's typically hidden behind a decorative keychain) and storing it in a secure location, such as in your wallet or on your phone. If you're looking to change the programming of the key fob of your car the locksmith can do it more easily.

If the key fob you have is a modern smart key and you want to change it, you'll need to go to a car dealership or locksmith to deprogram it and get an entirely new one which is more expensive than simply replacing it. This is because modern key fobs employ rolling-code encryption that prevents thieves from getting into the car. This means that the locksmith must be equipped with a specific programing tool that is available only to car manufacturers, which increases the cost.

In most cases, you'll need to pay for the entire service at once, including any costs to reprogram the new key fob. Based on the car it could cost anywhere from around $20 at certain stores to $200 or more at a car dealership.