So , You've Purchased Key Fob Repair ... Now What?
Key Fob Repair: Replacing the Battery

Getting jostled around in purses and pockets key fob buttons may get damaged and stop registering presses with accuracy. Replacing the small battery, which the majority of car fobs have in a snap-out case can fix this problem.
But, a new one is not likely to restore your key fob if the internal switch contacts are worn out. This is a simple fix that you can do at home.
Replace the Battery
It may be time to replace the battery if your key fob is slow or takes longer to unlock or lock your vehicle than it does on a regular. Luckily, replacing a key fob's battery is one of the easiest tasks you can complete yourself. It's a simple fix that will save you money on a trip to the dealership or a locksmith.
You can buy the coin-style (CR2032) battery at any auto parts or home improvement general retailer. Key fobs typically have a slot that can accept these batteries, and opening the case to replace batteries is relatively simple. Depending on the manufacturer, you may require an instrument such as a screwdriver to open the cover for the compartment for batteries.
Some key fobs have clips which hold the battery in place. If this is the case you can gently lift them up using your fingers or a non-metallic tool. Remove the old battery and install an alternative one, and be careful to note its orientation to ensure that you install it correctly. It is important to avoid touching the battery's flat surfaces as finger marks can shorten their lifespan.
Close the case of the key fob and test its function by pressing the button. If it still doesn't work you might need to open the fob again and make sure that the battery is inserted correctly.
It is also possible that a simple replacement of the battery isn't enough to solve the issue, like physical or electrical trauma. In this case, you'll need to bring your key fob into a dealer or automotive service center to repair. Before you do that, there are four issues that a replacement battery cannot fix. You must be aware of these issues to be able to get help from a trained technician if needed. You can also read how to fix the faulty transmitter of a key fob to find out why it is not working.
Clean the Contacts
Cleaning your key fob is essential to its function and longevity. Over time, the natural oils of your fingertips and pocket lint can build up on the buttons and crevices and may cause keys to stop functioning completely. It's easy enough to fix, though all you need is ruby alcohol and a cotton swab.
Then, open the key fob by taking the lid off with an instrument or coin and gently removing the battery. Note the type of battery (negative and positive side) to ensure you put it back in the correct way.
Then then, apply a cotton swab (or a small brush) to clean the buttons and surrounding areas of the fob. Make sure to pay special attention to the battery's contacts and ensure that they are clean. After you have finished, let the fob and its components completely dry.
If your fob doesn't function after cleaning it, it could be an idea to reset the system. Check the owner's manual for instructions on how to do this and follow them accordingly. If Read Far more is dead, this may be enough to bring it back to life.
After the key fob has been cleaned and resynched it is a great idea to keep up with regular maintenance. You can ensure that your key fob working well for many years by wiping it clean using a damp towel and mild soap.
Reset the System
Despite the fact that today's high-tech keys fobs are more capable, secure, and convenient than ever, it is possible for them to have certain issues. Most of the time, these issues aren’t serious or complex and can be resolved with simple procedures, such as changing the battery. If the issue is more serious, or if the issue cannot be resolved by simple solutions such as a professional auto repair shop can repair and replace the key fob.
Making your car lock or unlock using the key fob is the principal purpose of the device but it can also be used to enable certain vehicle features. One example is the ability to lower or raise a sunroof using the key fob. This feature is extremely useful when you are stuck in traffic and need to open your roof. Similarly, the key fob can be used to summon your vehicle when it is located in a tight location.
The internal circuitry of the key fob may fail due to defects in manufacturing or wear and tear. Symptoms include erratic behavior, or an inability to lock or unlock the car. Sometimes moisture, or other sources of electromagnetic interference could interfere with the operation of the key fob. If your key fob has become damp or contaminated by dust, it will require cleaning prior to being used again.
If the device continues to behave erratically after replacing the key fob or cleaning the contacts, you might require an initial reset. This can fix system-related issues and improve the performance of your device.
If you're not sure how to perform a reset make sure you consult the owner's manual or the manufacturer's site. Some devices require special tools to reset them, however you'll find instructions specific to your specific model.
Another option for resolving problems with your key fob is to call an Apache Junction mobile car locksmith. These experts can program and replace keyfobs for nearly all car models. They can also repair keys for cars that have chips inside them.