Key Fob Repair: Replacing the Battery
The buttons on key fobs can become damaged and stop functioning properly after being tossed around in purses and pockets. Replacing the battery, which most car fobs come with in a snap-out case, can fix this problem.
If the contacts inside your key fob are damaged, a new replacement may not be sufficient to bring it back to life. There's key repairs that you can do at home:
Replace the battery
If your key fob is feeling sluggish or takes a longer time to unlock or lock your car, it might be time to replace the battery. Replacing the battery of your key fob is one of those simple tasks you can do yourself. It's also a cheap fix that can help you avoid a trip to an expert locksmith or a dealership.
You can purchase coins-style (CR2032) battery at any auto parts or home improvement general store. The key fobs usually have a slot that can accept the batteries and opening the case to replace batteries is relatively simple. Depending on the manufacturer, you might need to use an instrument such as a screwdriver to open the cover of the compartment for batteries.

Some key fobs come with clips which hold the battery in place; if so you can gently lift them up using your fingers or a non-metallic device. Remove the old battery and replace it with a new one, being mindful of its orientation to ensure that you install it correctly. Avoid touching the flat surfaces of batteries since this could reduce their lifespan.
After the new battery has been installed and the key fob is closed, close its case and test it by pushing the button to ensure it is working. If the key fob still doesn't function, you may have to reopen it and verify that the battery is inserted correctly.
It is also possible that a simple battery replacement isn't enough to solve the problem, such as physical or electrical trauma. In that case, you'll need to bring your key fob to the dealership or service center to be repaired. Before you do this, there are four issues that the replacement battery can't solve. You should be aware of these issues, so that you can seek assistance from a certified technician when necessary. You can also read how to fix the malfunctioning transmitter of a key fob in order to find out why it is not working.
Clean the Contacts
It is essential to keep your keys clean to maintain their functionality and longevity. Over time, the natural oils of your hands and pockets can build up on the key fob's crevices and buttons and may cause keys to stop working altogether. All you need is rubbing alcohol an swab of cotton and alcohol rubbing.
The key fob must be opened first by gently prying the battery out using either a screwdriver or coin. Note the type of battery (negative and positive sides) so you can install it correctly.
Then, wet a cotton swab or small brush with isopropyl (rubbing) alcohol and start cleaning away the dirt from all of the fob's buttons and the surrounding areas. Pay particular attention to the battery's contacts, making sure they are free of any grease or dirt. Once you're done your task, allow the fob and its components completely dry.
If your device doesn't function after cleaning it, it may be an idea to reset the system. Consult your owner’s manual to learn how to reset the system. If the key fob was dead, this might be enough to bring it back to life.
After the key fob's been cleaned and resynced it is a great idea to maintain regular maintenance. You can ensure that your key fob in good working order for a long time by wiping it clean using a damp towel and mild soap.
Reset the system
Despite the fact that today's high-tech key fobs are more powerful and secure than ever, it is possible that they have some issues. The majority of these issues aren’t serious or complex and can be solved with simple procedures, such as changing the battery. If the problem is more serious, or if the issue can't be solved with simple methods such as a professional auto repair shop can replace and reprogram the key fob.
Making your car lock or unlock using the key fob is the main purpose of the device, however, it can also be used to activate certain car features. The key fob can be used to lift or lower the sunroof. This feature can be very useful when you have to open the roof while stuck in traffic or your hands are full. Key fobs are also useful for summoning your car when it's parked in a difficult place.
The internal circuitry of the key fob may fail due to defects in manufacturing or wear and wear and tear. Symptoms may include erratic behavior or total failure to lock or unlock the car. Moisture or other electromagnetic interference sources can sometimes affect the function of a keyfob. If your key fob has been damaged by dust or become wet, it should be cleaned before you use it again.
Replacing the key fob battery or cleaning the contacts could fix a malfunctioning device, however, if it persists to operate in a erratic manner, you may need to perform a factory reset. This can clear up bugs in the system and restore the operation of the device.
If you're not sure how to do the factory reset on your device, refer to the official website of the manufacturer or the owner's manual. Certain devices require specialized tools to reset them, but you should find instructions specific to your model.
Another option for resolving problems with your key fob is to contact an Apache Junction mobile car locksmith. These experts are able replace and program key fobs on almost all car models. In addition, they can also repair keys for cars that have chips inside them.