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10 Remote Car Key Repair Tricks All Pros Recommend
Car Key Replacement Services

If your car's key fob remote stops working it can be extremely frustrating and inconvenient. The majority of locksmiths and dealers in the automotive industry offer car key replacements that can restore your key to its original condition.

Try a few things at home prior to heading to the store or locksmith.

Lost or Stolen Keys

It doesn't matter if you lost it or left it on the counter at the grocery store. Most of these problems are easily fixable by you, even if there's no need for an expert. You might require a replacement battery or the fob might have lost its pairing information, both are easily fixed.

Modern cars use remote controls that communicate with their vehicle using a radio frequency. When the fob is in use it sends out the signal that lets you lock and unlock your car from a distance, and also start the engine. The fob is not an electronic key. You can't get it cut at a hardware shop and use it to open your car. The newer fobs have a transponder that must be programmed for your car to make the keyless entry work.

The most frequent issue with car fobs is when it loses its connection with the vehicle. This can happen when the battery goes out or is caused by something as minor as a power outage. Refer to the owner's manual for specific instructions. While the majority of modern cars have the option to reset and re-establish the pairing, you should also consult the manual. If the reset of your fob fails to fix the issue, you'll need to have it reset. This typically requires the assistance of an automotive locksmith or dealer.

It's expensive to purchase a new fob for the key and it could take a while for a retailer to order it and program it. If your insurance plan does not cover the cost, it is worthwhile to contact the maker of your car or locksmith to determine if you can have the fob replaced. Locksmiths can usually duplicate keys in a matter of minutes which will save you the cost and hassle of towing a truck. A locksmith can also give you a new, working key and also replace your old transponder chip. This will require that the receiver module in your vehicle be connected to the vehicle.

Bad Battery

Modern car remotes can be extremely convenient, and are a safer way to start a vehicle. However, if they stop working they can be frustrating. This is usually a problem that can be fixed by replacing the battery on the key fob.

The batteries that power the majority of modern remote key fobs are coin cells made of lithium ion. They are quite affordable and do not have a limit in their lifespan, but they have a limit to how long they will last. When a car key remote is used frequently it is possible that the battery will get worn out more quickly than normal. This could be due to being pushed or pressed hard or exposed to moisture, which can cause corrosion.

The most frequent reason for a car key not to function properly is a worn-out or dead battery. This is the first thing you look into to determine if your remote has stopped functioning. This can often resolve the issue. If it is not the case, you may need to replace the battery.

A battery will usually be bad because of oxidation or corrosion. It might also be giving off acidic fumes or leaking acid from the battery, which could cause weak connections between the battery's terminals. This can be fixed by removing the old battery and cleaning all of the contacts with a solution made of baking soda and water. After cleaning, you can solder the connectors back to their original positions and test your remote again.

When you're checking for a dead or dying battery, it is also good to determine whether any buttons are no longer functioning. This could be a sign that there is a serious issue with your remote and you will need to get a professional to repair it. A professional can tell you if the remote can be repairable or has to be replaced. They can either do this on the spot by using an onboard process or connect to your vehicle's OBD2 port to program a new key fob a safe and fast way.

her response inside your car keys transmits a unique code to your vehicle's computer, similar to how the remote control for your garage door sends signals to its receiver to open or close it. 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 signs that your transponder chip has gone bad is when you try to start your car but it fails to start. This could be due to a variety of reasons, but it's usually a sign that it's time to get a new car key.

A transponder chip that is not working is a different sign. Your car will not lock using your key fob. In this instance, you'll need to lock your vehicle manually. This can be frustrating particularly if your car is already locked.

The transponder may stop working if the battery in your key fob is dead. This could happen over time, as the fob battery slowly loses its charge. It is always an ideal idea to keep an additional key fob battery on hand, so that you can replace it as needed.

There are a variety of other issues that can occur with a car's transponder chip but the ones listed above are the most frequent. Contact an auto locksmith as fast as possible if your key fob's battery is dead or if the chip that controls transponder has become malfunctioning. They can reprogram the key, or replace it completely according to what's required. A Queen Creek auto locksmith will be able to identify the issue and offer a solution that is reliable. Usually, they are more affordable than going to a dealer.

Lost or Corrupted Pairing

It's not uncommon for your car key fob to lose functionality as time passes. There are a few easy solutions you can attempt to make your remote work again.

The first thing you need to try is using a backup key to lock and unlock your car. This will help ensure that your fob isn't at fault and also to eliminate a mechanical issue with the locks if it turns out to be an electrical one.

Often, key fobs for cars simply need to have their battery replaced. Replacing the batteries isn't expensive and you can do it yourself with no professional equipment.

It is essential to select the right type of battery, however. The majority of automotive fobs accept CR2025 and CR2032 batteries. However, some might utilize different types of batteries. You can look up the label on your remote or examine the inside if you're not sure. The battery is usually marked with a a printed or stamped number on it, or use a multimeter to see what the voltage is.

A different pair of batteries could also be utilized. The batteries inside the remote may get worn out or corrode over time. Replacing them can restore its functionality.

If replacing the battery does not work, try to clean out your key fob and check that all buttons are working properly. Car key fobs aren't indestructible and may get dirty if they're used in pockets or purses. In certain cases, removing the buttons and flexing them in and out of them could bring your remote back to life.


If you've tried every step on this list, but your car key fob isn't working, you'll probably need it reprogrammed. Grays Locksmiths will do this and can provide you with either a new replacement or an old one if you need it.

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