A Complete Guide To Remote Car Key Repair Dos And Don'ts

· 5 min read
A Complete Guide To Remote Car Key Repair Dos And Don'ts

Car Key Replacement Services

If your car's key fob remote stops working it can be a frustrating and frustrating. Fortunately, the majority of automotive locksmiths and dealerships offer car key replacement services that can get your key working properly.

Before heading to the dealer or a locksmith professional take a few steps at home first.

Keys stolen or lost

It doesn't matter if you dropped it off in the car, left it on the counter when you ran to the store for groceries, or simply lost it and not having your key fob is an inconvenience. Most of these problems are easily solved by you even if you're not a professional. You might require replacing the battery, or the fob could have lost its pairing information -- both are easily repaired.

Modern cars have remote control keys which communicate with the vehicle via an exclusive radio frequency. If your fob is operating it transmits the signal that allows you to lock and unlock your car from a distance as well as start the engine. The fob itself isn't a mechanical key and therefore you cannot get it cut at the hardware store and then use it to open your car. The newer fobs have transponders that must be programmed for your car to make the keyless entry function.

The most common issue with car fobs is when it fails to connect with the vehicle. This can occur if the battery goes dead, or if there is a power failure. While the majority of modern automobiles offer the option of resetting the fob to restore its pairing, consult your owner's manual for instructions. If resetting the fob does not solve the issue it must be reprogrammed. This usually will require a trip to an automotive locksmith or a dealership.

The cost of purchasing a replacement fob could be costly and can take some time for the dealer to order and program it. If your insurance policy doesn't cover the cost, it is still worth contacting the maker of your car or locksmith to determine whether you are able to have the fob replaced. You can save money and time by having a locksmith create copies of the key in-person. A locksmith can also cut you keys and also replace the transponder chip, which will need to be synced with the receiver module of your vehicle.

Bad Battery

While modern car remotes are very convenient and provide a much safer method of starting your car but they can be a hassle when they stop working. Thankfully, this is often something that can be solved by replacing the battery in the key fob.

The batteries that are used in the majority of modern remote key fobs are lithium ion coin cells. They are relatively cheap and do not have any limitations in terms of their lifespan. However,  car key fob repairs near me  do have a limit on their life span. The battery of a remote key may wear out faster than normal if it is frequently used. This could happen if the battery is pushed or in a way that is too forceful or exposed to moisture, which can cause corrosion.

The most frequent reason for the car key to not work properly is a dead or worn-out battery. This is the first thing you check if your remote key has stopped functioning. This can often resolve the issue. If not, you might have to replace the battery.

Most of the time, the battery is damaged because of oxidation or corrosion. It could also be leaking acid or emitting acidic fumes that could lead to poor connections between the battery terminals. This can be fixed by taking the old battery out and cleaning all of the contacts with a solution made of baking soda and water. After cleaning the connectors, you can solder them back in place and test the remote.

When you're looking for a dead or dying battery it is also important to see whether any buttons are no longer functioning. This could be a sign of a more serious problem with your remote. You'll need to contact a professional to fix the problem. A specialist can tell you if your remote is repairable or has to be replaced. You can either repair it in a single visit by using an onboard process or connect to your vehicle's OBD2 port to program a new key fob in a safe and fast manner.

Bad Transponder Chip

The chip in your car key transmits a unique code to your vehicle's computer, similar to how the remote control for your garage door transmits signals to its receiver to open or close it. This code informs the vehicle that it is the right owner and prevents anyone else from starting the engine.

If you attempt to start your car and it doesn't start be able to start, it's a sign that your transponder is malfunctioning. This could be due to a number of reasons, but it's often an indication that it's time for a new car key.

A transponder chip which has failed is another common sign. Your car won't lock if you use your key fob. In this case you'll have to lock your vehicle manually. This can be a hassle and inconvenient, especially in the event that you have already locked out of your vehicle.

The transponder can cease to function If the battery inside your key fob is not functioning. This will happen over time as the fob battery gradually loses its charge. Always keep an extra key fob in your pocket so you can recharge the battery if required.

There are a variety of other issues that can arise from the chip of a car's transponder, but the ones listed above are the most common. Contact an auto locksmith as quickly as you can if your key fob's battery is dead or if the transponder chip has become malfunctioning. They can reprogram the key, or replace it entirely, depending on what's needed. A Queen Creek auto lockout will be able to determine the issue and provide you with an effective solution. They are usually more cost-effective than taking your vehicle to an auto dealer.

Pairings that are lost or damaged

It's not unusual to see your car's key fob to lose functionality as time passes. However, there are easy fixes you can try to help you get your car's remote back functioning.

The first thing you need to do is to try using an additional key to lock and unlock your vehicle. This will allow you to be sure that your fob isn't the issue and also to eliminate a mechanical issue with the locks if it does turn out to be an electrical one.

Often, key fobs for cars require a battery replaced. It's not too expensive to replace the batteries, and you don't need any special equipment.


It is crucial to choose the correct type of battery, however. Most automotive remotes accept CR2025 and CR2032 batteries. However, some might utilize different types. You can check the label on your remote or examine the inside if you're not certain. The battery will have a code written or printed on it. You can also use a multimeter in order to determine the voltage.

Another easy fix is to test a different pair of batteries. The batteries in the remote may wear out or corrode over time. Replacing them may help restore the functionality of the remote.

If replacing the battery does not work, try cleaning out your fob and make sure that all buttons are working correctly. Car key fobs can get pretty dirty from being bashed around in pockets and purses and aren't completely indestructible. In some cases, simply taking them off and cleaning them and flexing them back and out can get your remote working again.

If you've tried everything on this list and your car key fob still not functioning it is likely that you require it to be reprogrammed by a professional. Grays Locksmiths will do this and can provide you with either the new one or a used one, if required.