Remote Key Fob Repair
Modern vehicles are equipped with remote keys that can be used to lock, unlock and start the vehicle. But, like all pieces of modern technology, it can sometimes experience problems.
These are usually very easy to fix. You can reset it by following the steps in your owner’s manual.
Check the Battery
The remote control is powered by the battery in the key fob. It's a small, inexpensive component that needs to be replaced frequently to ensure that the fob's function is maintained. But, aside from the battery, there are other reasons why your key fob might not be functioning properly. These issues could include physical damage, exposure to water or internal component failure. Regardless of the cause, if your key fob's sensor is not responding it's time for a replacement battery.
Be sure to have the right size battery. Most modern key fobs are powered by a three-volt CR2032 that is readily available in a variety of stores. The size of most of these batteries is engraved on the outside of the key fob. You can identify the type of battery your vehicle requires by searching for the brand name.
Once you have the right battery, carefully open the key fob and take out its battery. Photograph the inside of the fob prior to you do this to make sure that you put it back together correctly. This simple action can save you from needing to purchase a new fob because you made an error while putting it together.
It is also important to know that some key fobs have an additional mechanical key, called an emergency blade. It's located inside the key fob and allows you to open your car's driver's side door in the event that the remote control isn't working. To open the blade of the key, find the notch in the middle of your fob. The notch is typically covered by the plastic casing of the fob.
If you want to be extra vigilant you can use a multimeter to check the voltage of the battery. Most modern key fobs come with an voltmeter in their casings, however you can also get a multimeter for just a few dollars at most hardware stores. In general, the battery should read 3.0 volts and higher. If it is below that level, it could indicate a battery that is in its last stages and should be replaced immediately.
Check the Buttons
They may look like sophisticated, luxurious convenience items however, keys for cars aren't durable. They can cease functioning after a period of time, especially when they are frequently used or if they have been exposed to physical abuse. Fortunately, most of the times it's easy to determine and repair a problem with remote key fobs, and replacing the battery is usually all that's needed.
The majority of modern car key fobs feature multiple buttons for different functions like locking and unlocking the doors as well as activating the panic button, as well as opening the trunk. When a button on the fob is pressed it sends a radio signal to a receiver inside the vehicle. Some fobs have buttons to start the car, which is especially useful on cold winter mornings as well as hot summer days.
The buttons on a key fob are reset by simply taking it apart and checking whether they're not damaged or stuck. Key fobs aren't usually designed to be disassembled however the battery connector terminals on a key fob can get loose over time. If the contacts on the button are disconnected from the circuit board and need to be soldered, a simple job could be enough to get them back into place and restore the fob to full function.
If a fob gets damaged or dropped, the buttons could be damaged, misaligned or out of alignment. These types of problems are typically more difficult to fix on your own, but can usually be addressed by a local auto shop that has the proper tools and experience.
Keep a spare key fob in a safe location, just in case the one you use most often stops working. You'll avoid being stuck in the in the middle of nowhere with no keys, or having to pay for a large amount to have your car towed to the dealer. Make sure to check your car insurance or car club membership or extended warranty coverage for the cost of replacing a replacement key fob.
Check the Casing
It's not uncommon for a key fob to get submerged, whether from a pool, a rainstorm, or even your washing machine. The moisture that is resulting can trigger a myriad of malfunctions in the electronic components. The good thing is that a key fob can often be kept from death's edge by drying out thoroughly and following a few simple steps.
The first step is to ensure that the buttons are functioning properly. This usually means removing, cleaning and reassembling the buttons. If the buttons do not pop back in or are stuck, it's time to replace the remote.
Examine the case to make sure that nothing is interfering in the operation of the key fob. Utilize tweezers to remove the case and remove the battery however, do not remove the circuit board or antennas. If you disrupt the circuits that keep your key fob programmed it will be required to visit an Interstate All Battery Center or dealer to reprogram it.
After you have replaced and removed the battery, it's a good idea for you to dry the key fob out by placing it into the bag of a plastic bag with silica gel packets. This will help prevent future moisture problems and make your key fob more robust.
If, after all this, the fob is still not working properly, you'll need to visit a dealership or an independent shop that specializes in your specific make and model of vehicle. They can reprogramme the key fob to match your vehicle and hopefully restore it to full functionality.
If car keys repairs fails, the replacement key fob offered by NAPA can be purchased on the internet or at a local NAPA Auto Parts store. These do-it-yourself-operated remotes look as the factory key fob but are much more affordable and can be easily connected with your vehicle using simple instructions. If you'd like to avoid the cost and hassle of a dealership visit, NAPA offers several do-it-yourself replacements that can be programmed in a matter of minutes at your home.
Check the Connections
Occasionally, your key fob will just stop working - even though it's still connected to your vehicle. This could be caused by a number of factors, including malfunctioning contacts on the battery or buttons. If this is the case, you might be capable of fixing it yourself by performing some basic maintenance.
The first thing you need to do is ensure that your backup remote is able to lock and unlock your car's doors. If it does it, then you might have issues with your primary remote. If you are still unable to do it, try replacing the batteries in your backup remote.
It's a great idea disassemble your key fob prior to replacing the battery and then inspect the circuit board. You'll want to ensure that there aren't any cracked solder joints that need to be re-soldering. When you're done, you can replace the battery and put back together the key fob.
After you have replaced the battery and reassembled your key fob, test the connection to your vehicle. Use a flathead screwdriver in the notch at the bottom of the key fob. You can then pry apart the two halves of your key fob and gently remove the circuitboard. Install a brand new CR2032 3V battery with the negative side facing down. After you have reinserted the board and reassembled your key fob.
If this doesn't solve the problem, you may have a more serious issue. In this instance, you will need to either call your dealer or an independent repair shop that specializes in the specific model of the car you own. They can diagnose the problem using a radio frequency tester that is a device that determines if your key fob is transmitting signals to the computer in your car.
Hopefully, this guide was helpful for anyone who is experiencing issues with their car's key fob. Contact us if you have any questions or concerns. We'll be glad to help you get back on the road in Deptford or Cherry Hill!