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Car Remote Key Repair

Modern car remote keys are very useful and convenient, but they can be frustrating when they stop working. Fortunately, there are quick fixes that will usually bring them back in operation.

Replace the battery first. Most fobs use lithium coin cells, which are cheap and easy to find.

Broken Electronics

The remote car key you have an electronic circuit board inside that transmits and interprets signals to your vehicle. If this board is damaged, the key fob will not perform as it should. Unlike battery failure, which is typically very simple for most drivers to fix at home, damage to the transmitter or receiver of your remote key will require a professional locksmith or your car dealer.

Most remote key fobs are powered by lithium ion coin batteries, which have an extremely long shelf life. However they won't last forever. Changing the batteries will likely solve your issue, especially if you've had them for a long time. If you've been using your remote fob for a while you may be shocked to find that the buttons don't respond even though the batteries are new. Because the buttons on your key fob are subject to lots of rubbing, they can sometimes break or become unresponsive over time. If this is the case removal of the buttons and cleaning them prior to replacing them can often solve the problem.

If the buttons on your remote still don't respond, you may have to change the programming to work with the car's system. This is typically done by turning the ignition key several times while the doors are closed. The procedure will differ based on the model and make, but you will be able to locate instructions online or consult a professional for help.

If the key fob is made of an exterior made of plastic it is possible to take off the cover and pull it off. However, be careful not to scratch the buttons or other internal components. The best tool to accomplish this is needle-nose pliers with longer tips that can more easily grasp small pieces. Lubricating the pliers using super glue, melted tallow or putty can assist them to grip delicate components. It's also a good idea to have an automotive locksmith take care of this, as improper methods could cause damage to the electronic components within. The attempt to forcefully pull the fob apart could cause damage to the plastic, and it's possible to accidentally snap off any buttons that are connected to it.

Chips in the transponder are defective.

Transponder chips could fail if you've previously been able to start the car with the remote key, but you cannot do it again. This is because your key relies on this tiny electronic component to communicate with the immobilizer system. It transmits a signal to the system that your key is valid and you are capable of starting the engine. If the chip fails to transmit this signal the immobilizer will shut down your vehicle.

This problem is more common in older cars, but it can also be found in modern vehicles. This is due to the transponder chip can wear out over time. The chip can be replaced by a car locksmith however, it can be costly.

In certain cases, the chip in your key may be completely dead. In this situation the dealer will have to replace it. This is the most expensive but necessary option to get your vehicle back on the road.

Another possibility is that the chip in your key has become corrupted, which means it no is able to communicate with the immobilizer system. This could happen when the battery is replaced or it can occur when there is physical damage to the key. A Mesa car locksmith can sometimes solve this issue, but it might be necessary to go to the dealership in order to have your key programmed once more.

If you're having issues with your remote key, you must first try a backup. If this doesn't resolve the issue, you should disassemble the key fob to conduct a visual inspection. You should make sure that there are no buttons that appear to be broken or loose. These components are frequently used and can loosen as time passes. If they are loose it is a good idea to have them soldered back in place by an expert. This will often make your key fob. car key repairs near me is especially true for keys that were accidentally placed into the wrong ignition lock cylinder.

Damaged Battery


If the key fob is not working after you've tried a new one it could be due to other problems. Fobs are damaged by dropping them or stepping on them, and internal connections, like the ones that connect the battery terminals inside the remote, may also be broken or disconnected. You may have to reprogram your key fob if don't have a spare of the same model and type.

Modern key fobs should be programmed to match the car to ensure that only you can unlock the car's doors. It's a must to safeguard your car and to prevent other people from using your key fob to gain access to your car or cause problems with its electrical system. Certain engine error codes or even normal wear-and-tear can corrupt the programming and stop your key fob from working. It is essential to have your key fob reprogrammed professionally by a professional with the right equipment.

It's possible that the issue is with the buttons and is an easier fix than replacing the whole key fob. Key fobs typically feature rubberized buttons that can be damaged or loosen over time. If you see that the buttons do not appear to be damaged, you might need to adjust them manually.

Open the key fob to inspect it, but be careful. Certain fobs do not have an easy release mechanism, and you may require a small screwdriver or other device to open them. Some fobs are sealed, and are not openable without special tools. You'll have to go to a dealer to get them professionally opened. If you have an extra key fob for the same model and make, try using it to enter your car's programming mode. This could require you to shut and lock the doors, switch on and off the lights and electronics, and press a series of buttons in an order that is unique to your car.

Failing Buttons

Mechanical damage may be the reason if the buttons on your key fob do not function or require you to press them very hard. The key fob's function could be affected by a fall on concrete or accidentally hitting an item by using a sharp object. If this happens, you'll need to take the key fob apart and inspect it thoroughly to see if any buttons appear to be broken or are out of their place. If that is the case, a locksmith could fix it.

Failing buttons can be caused by dirt or crud trapped between the buttons. You should clean your key fob with a cotton swab that has been immersed in alcohol. It is possible to clean the surface on the keys. You should also determine if the issue lies related to your car lock or the key fob. If you don't own an extra key, try using the keys of a different vehicle to determine if it works.

The condition of the battery will determine if you need to reprogram the key fob. If your key fob doesn't function after replacing the batteries, the terminal contacts of the battery may be damaged. You can also deprogram your electric key fob by pressing the buttons too frequently when you are out of range, or by disconnecting your car's battery.

If your key fob doesn't work after replacing the battery you need to re-programme it to your car. It will depend on your specific car model, but you'll generally have to lock and unlock the doors manually, insert the key into the ignition, set it to accessory, then press the remote that is wireless. If this is working, the exterior and/or interior lights should light up. It is possible to test the key fob to confirm that it has been successfully programmed. In rare instances the key fob may stop working if there is an issue with the door locks themselves.

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