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15 Amazing Facts About Remote Car Key Repair You've Never Known
Car Key Replacement Services

If your car's remote key fob fails to function it can be a frustrating. Many locksmiths and dealers for automotive offer car key replacements that will restore your key to its original condition.

Try a few easy things at home before you rush to the dealer or a locksmith.

Lost or Stolen Keys

Whether you dropped it in the car, put it on the counter when you ran to the supermarket, or just plain lost it and not having your key fob can be a big problem. Most of these problems are easily fixed by you, even if you don't have a professional. You might require a replacement battery, or the fob could not have the pairing information -- both are easily fixed.

Modern cars are equipped with remote control keys that communicate with the vehicle by using an exclusive radio frequency. When your fob works it transmits an alert that allows you to lock and unlock your vehicle remotely, as as starting the engine. The fob isn't an electronic key. You cannot get it cut at an establishment that makes hardware and use it to open your vehicle. Modern fobs also include transponder chips that need to be programmed for your specific car in order for the keyless entry to work.

The most common issue with car fobs is when it loses its pairing with the vehicle. This could happen if the battery is dead, or if there is an issue with the power. Check the owner's manual for instructions. While most modern cars offer the option of reset and re-pair the pairing, you can also consult the manual. If resetting the fob doesn't fix the problem, it will need to be reprogrammed. This usually will require a trip at the dealership or an automotive locksmith.

It's expensive to purchase a replacement fob for the key and it could take several days for a retailer to order it and program it. Certain car insurance policies cover the cost of replacing a fob however, if it's not covered, it's still worth getting in touch with your car's manufacturer or a locksmith in your area to discuss replacing the fob. They can often copy keys in a matter of minutes and save you the expense and hassle of the tow truck. A locksmith can also cut you new keys and replace the transponder chip. The new one will require synchronization to your car's receiver module.

Bad Battery

While modern car remotes are convenient and provide a much safer method of starting your car however, they can be frustrating when they stop functioning. This issue can be fixed by replacing the battery in the key fob.

The majority of modern remote key fobs use lithium coin cell batteries that are ion. They are relatively cheap and have no limitations on their life. However, they do have a short lifespan. The battery of a remote key may be more worn than normal if used frequently. This could be due to being pushed or pressed too hard or being exposed to moisture, which can cause corrosion.

The most common reason for the car key to not function is a worn or dead battery. This is the first thing you look into if your remote key has stopped functioning. Most of the time, this will fix the problem but if not, it is time to replace the battery.

A battery is usually damaged due to oxidation or corrosive corrosion. key repair service could also give acidic fumes, or leaking battery acid, which can cause weak connections between the battery's terminals. This can be repaired by getting rid of the old battery and cleaning all of the contacts using a solution of baking soda and water. After cleaning the connectors, you can resolder them in place and test the remote.

When you're looking for a dying or dead battery, it is also good to see whether any buttons are no longer functioning. This could indicate that there is a bigger problem with your remote and you will need to get a professional to repair it. A specialist will be able to tell you if your remote is repairable or whether it needs to be replaced entirely. They can either do this in a single visit by using an onboard process or connect to your vehicle's OBD2 port to program a new key fob a safe and fast method.

Bad Transponder Chip

Similarly to the way the remote to your garage door sends a specific signal to its receptor so that it can open or close and closes, the chip in your car key transmits a unique code to the vehicle's computer system. This code informs the vehicle that it's the owner who is legitimate and prevents anyone else from starting the engine.

One of the first indications that your transponder chip has been damaged is when you try to start your car and it refuses. This could be due to a variety of reasons, but it is often an indication that it's time to get an alternative car key.

A transponder chip that has failed is a different sign. Your car will not lock with your key fob. In this case you'll need to lock your vehicle manually. This can be frustrating and unaffordable, particularly when you're locked out of your car.

The transponder could not function if the battery in the fob's battery is depleted. This can happen over time, as the fob battery gradually loses its charge. Always keep an extra key fob in your pocket so you can replace the battery as needed.

There are a variety of other issues that could arise with the transponder chip in your car however the ones mentioned above are the most frequent. Contact an auto locksmith as quickly as you can when your key fob's power source is dead or the transponder chip has become faulty. They can reprogram the key, or replace it entirely depending on the need. A Queen Creek auto lockout will be able to determine the issue and offer an effective solution. They are usually cheaper than taking your vehicle to an auto dealer.

Pairings that are corrupted or lost

The key fob in your car isn't a piece of cake, and it's not uncommon for them to become obsolete over time. There are a few quick solutions you can try to get your remote back to working.

It is recommended to first lock and unlock the vehicle using an alternative key. This will confirm that the fob is not the cause of the issue, and eliminate the possibility of any mechanical issues with the locks in the case that it proves to be electrical.

Often, car key fobs simply need to have their battery replaced. The cost of replacing the batteries isn't too expensive, and you can usually do it yourself without any professional equipment.


It is crucial to choose the right type of battery, however. The majority of automotive fobs accept CR2025 and CR2032 batteries. However, some might utilize different types. If you're not certain of the type of battery your remote runs you can look up the label or examine the inside of. The battery will typically have a an engraved or stamped number on it, or you could use a multimeter to see what the voltage is.

A different pair of batteries can also be used. Sometimes, the batteries in the fob could be worn out or corroded over time and replacing them could restore the functionality of the remote.

If the battery change doesn't work you can clean your fob and ensure that all buttons are functioning. Car key fobs can become quite dirty due to being thrown around in purses and pockets and aren't completely indestructible. In certain cases, taking them off and cleaning them and flexing them in and out can help get your remote back up and running.

If you have attempted all the steps on this list, and your car key fob isn't working, then you likely need to reprogramme it. Grays Locksmiths can do this for you, and they will also be able to provide you with a new or a used replacement if you need it.

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