Car Key Button Repair

Car key buttons undergo lots of abuse, especially if used frequently. Over time, they can become damaged.

There are a few simple fixes that will allow your keys back in working order. These methods do not come without risk, however. Changing batteries or tampering your key fob's security can be dangerous. If you're not confident doing these yourself, it is recommended to contact a professional auto locksmith.

Change the Battery

It's possible to replace the battery in your key fob if it isn't working as it should. You can typically purchase replacement batteries from any chain drug store or the parts department of your automobile dealership. Some manufacturers will include an extra battery with the car when you purchase it.

You will first need to determine the type of battery is used in your key fob. The manufacturer will likely have this information on their website or on the key fob's specifications. The most popular type of battery found in the keyfob is the button cell, which is like the ones found in remotes and watches. These batteries are available at Walgreens, Energizer and other stores for less than $5 per box of two.

If you are aware of the type of battery your key fob is using, you can remove it and remove the old battery. The majority of key fobs are made with a notch or a seam that connects them and can be opened by using your fingers, or with the flat side of a screwdriver. Once the fob is opened, the battery should be able to pop out and you can insert the new one in the same direction as the previous one. The majority of key fobs utilize CR2032 3V batteries, which are readily available at numerous retailers that sell AAA and AA batteries.


You can put the two halves back together after inserting the new battery and then test the key fob to make sure that all buttons are functioning properly. Pressing the locks and unlock buttons on the key fob while pointing it at your vehicle will help determine if everything is functioning as it should be. If your car is not responding to the key fob, it might be necessary to reprogram your key fob and establish a wireless connection between the two. Fortunately, this is a relatively easy process and only requires the use of a smartphone or another device to do so.

Reprogram your key fob

If your key fob doesn't work and you think it needs to be replaced It may not require a new battery, but rather the old one has to be changed. This procedure differs for every car. To find out how to do it, consult your owner's manual. It's usually available in PDF format on the automaker website. You can also search YouTube for videos.

In most modern vehicles, a specific procedure is required to put the vehicle into 'programming mode'. This typically involves pressing the power button several times on the door of the driver or ignition, while simultaneously pressing the button on a fob within a time-specific period. This is how the fob transmits its digital identification code to the vehicle, which stores it in its memory. Once the fob is programmed, it will function like a normal key.

It is important to remember that changing the programming of a key fob will erase any other key fobs that have been programmed previously. Therefore, if you'd like to keep other fobs, they need to be carefully and quickly reprogrammed after the first one.

You can often find replacement batteries for a car key fob in hardware stores, big-box retailers, or even online. However, you need to be aware of the make and model of your vehicle prior to purchasing a battery for your fob because the correct type of battery can be tricky to find.

A CR editor found a battery that fit the key fob she had however it was for a different car. This meant that she could start her car and open the door, but she couldn't lower the windows.

Fortunately, dealers can assist you in this instance, as most of them have the equipment needed to reprogram a fob into the specific vehicle. Dealers are required to perform this service on some European cars such as Audi and BMW because they come with specialized security features which can only be reset in the factory. Some dealers, such as those at Toyota and Lexus were willing to reprogramme an alternative key fob in the event that you could identify the exact model and make of your car.

Replace the Button

If you've tried changing the battery, reprogramming your key fob, and still can't start your car it could be time to replace that button on the key. The button on your car key is subjected to a lot of use and jostling and can be damaged or stuck over time. Each press of the button on your key fob releases a distinct code in a sequence that is recognized by the receiver inside the vehicle. If you attempt to operate your vehicle from some distance, it might not recognise you. It may shut the doors or turn off the engine.

You can buy replacement buttons online or in numerous local hardware stores. It is simple to install them and they are very easy to open.

Contact an Auto Locksmith

If you're experiencing issues with your car key It could be time to contact the experts. Auto locksmiths specialize in the repair of electronic car keys as well as their associated locks. These specialists have the knowledge and tools required to recognize and fix a variety of issues with your key fob including replacing batteries and changing the programming. They also have the expertise and experience to handle more complicated jobs such as fixing damaged buttons or cutting a new replacement key.

The switch in the car key button is typically worn out. Excessive use and exposure to elements are the primary causes. The switch is typically made of a tough plastic material and has a variety of switches that are located on the surface. Each of these switches is responsible for activating the specific function you are using the key for. As the switch age it becomes more difficult to activate these functions. You will need to apply more pressure to the switch in order to make it work. This can further damage the switch and reduce its lifespan.

Replace the battery in your key fob. The majority of cars have lithium-ion coin or button batteries that you can buy at supermarkets, pharmacies, and home improvement stores. After you've replaced the battery your key fob should work once more.

If the problem persists, it could be that the contacts inside your key fob have become worn out. The contacts are made of rubber and are covered with an electrically conducting film that can wear out. When you use the keypad, they are continuously exposed to moisture and dust. key repair for car will eventually wear to the point that they can no longer make contact with the circuit board or sensor beneath the keypad.

The dealer can replace the key fob, but it could be costly and takes a lot of time. Another alternative is to contact an auto locksmith in your area who will be able to fix your key fob and save you money.