5 Clarifications On Car Key Button Repair

· 5 min read
5 Clarifications On Car Key Button Repair

Car Key Button Repair

Car key buttons endure many abuses, especially if used frequently. As  key car repair , they may become faulty.

There are a few quick solutions that will get your keys back to working. These solutions are not completely safe however. Changing batteries or tampering your key fob can be risky. If you're not comfortable with these methods, it is best to consult a professional auto-locksmith.

Change the Battery

It could be time to change the battery if your key fob isn't working as it should. You can buy replacement batteries in any national chain drugstore or at the parts department at your local dealership for cars. Some manufacturers include an extra battery in your vehicle when you purchase it.

The first thing you will need to find out which battery your key fob uses. The manufacturer will likely have this information on their website or on the key fob's specifications. Generally speaking, the most popular battery used in a key fob is a button cell that is similar to the ones used in remote controls and watches. These batteries are available at Walgreens, Energizer and other stores for less than $5 per box of two.

You can remove the old battery from your key fob when you know what kind of battery it is using. You can open most key fobs by using your fingers or a flat tool like a screwdriver at the seam or notch at which they connect. Once the fob is opened, the battery should come out, and you can insert the new one with the same orientation as the previous one. The majority of key fobs are powered by CR2032 3V batteries, which are available at many stores that sell AAA and AA batteries.

You can put the two halves back together after you have inserted the new battery and test the key fob to confirm that all buttons function correctly. Pressing the locks and unlock buttons on the key fob while pointing it towards your vehicle will help you determine if everything is functioning as it should be. If your vehicle still does not respond to the keyfob, you may require reprogramming the fob and establish wireless connectivity. Fortunately, this is quite simple and requires the use of your smartphone or another device to accomplish this.

Reprogram the Key Fob

If you're having issues with your key fob and believe it's time to replace it It may not be required to replace it. Instead the battery you have may require reprogramming. This procedure is different for every car so the best way to find out is to refer to the owner's manual (usually accessible in PDF format on the automaker's website) or search YouTube for videos explaining how to go about this.

Most modern automobiles require a particular procedure to put the vehicle into "programming mode," which is usually done by pressing the power button on the driver's side door or ignition several times while pressing the fob's button within a specific time period. This is how the fob communicates its digital identification code to the vehicle, which stores it in the memory. Once the fob is programmed, it will function like a normal key.

It is important to know that the process of reprogramming a key fob can wipe out any other key fobs that had been programmed previously. If you want to keep the other fobs after the first, then they should be programmed quickly and carefully.


Sometimes you can find replacement batteries for car key fobs in hardware stores, big retailers, or even on the internet. But, it is important to be aware of the model and make of your car before buying a fob battery as the right kind isn't always easy to locate.

A CR editor found a battery that was compatible with the key fob she had however, it was for a different model of car. This meant that she could start her car and unlock the door, but she was unable to lower the windows.

Fortunately, the dealer can assist you in this instance and most dealers have the equipment needed to reprogram a fob into specific cars. Some European vehicles, such as the ones manufactured by Audi and BMW typically require a dealer to get this service because they use specific security features that can only be reset by the manufacturer. Other dealers we spoke with such as those from Toyota and Lexus, were willing to reprogramme the fob in a replacement as long as you knew the exact model and make of the vehicle you are driving.

Replace the Button

If you've tried changing the battery and reprogramming the key fob but cannot start your car, it could be time to replace the button on the key. Your car key button receives a lot of use and jolting over time and may get stuck or damaged. Every time you press the button on your key fob an individual code is sent out in a pattern that the receiver inside the vehicle is able to recognize. If you attempt to operate your car from a distance without the correct code could cause it to not be able to recognize you and then lock the doors or shut off the engine.

You can purchase replacement buttons online or at many local hardware stores. They are fairly easy to open up and install and only require a little clear plastic tape to cover the old button.

Contact an Auto Locksmith

If you're having trouble with your car key it could be time to consult the experts. Auto locksmiths specialize in the repair of electronic car keys and their associated locks. These experts have the tools and know-how to determine and fix issues with your key fob. This includes replacing batteries and reprogramming them. They have the knowledge and expertise to tackle more complex jobs, like fixing a broken key or cutting a replacement key.

One of the main reasons for a car key button to stop working is because the switch inside it has worn out. This is due to excessive use and exposure to the elements. The switch is made of an extremely hard plastic with multiple switches on its surface. Each switch activates the function that you select with the key. As the switch age it becomes more difficult to turn on these functions. You will have to exert more pressure on the switch in order to activate it. This can cause more damage to the switch, further reducing its life span.

Replace the battery in your key fob. The majority of cars have lithium-ion coin or button cell batteries that you can find at pharmacies, supermarkets, and home improvement stores. Once you've replaced the battery, your key fob should be working again.

If the issue persists, it could be because the contacts on your key fob's device have been worn out. The contacts are rubber-like and coated with an electric conducting film, which could wear out over time. When you use the keypad, they are exposed to moisture and dust. They will eventually wear to the point where they're unable to contact with the circuit board or the sensor underneath the keypad.

You can try to have the key fob replaced by going to a vehicle dealership, but it can be costly and could take an extended time. You can also call an emergency locksmith who will repair your key fob for an affordable price.