Car Key Repair - How to Fix a Dead Remote
Car remotes are a wonderful convenience for drivers. They can unlock doors, open trunks, and even start the car. However, they can cease to function at uninviable times.
If key fob repair near me notice that your key fob is not working, try a few simple fixes before going to the dealer. These tips could save you money.
Keyless Entry System
Rather than needing to fumble around with keys in your pocket or purse instead, walk to your car, press an icon on the key fob, then unlock the doors and start the engine. It's a convenient feature that has made the world of car driving more comfortable and more secure. But, like all devices that has a keyless entry system, the keyless entry system can be damaged by repeated use or because of other reasons. If you are having issues with your system, you can either visit the dealer or call an locksmith.
The way that a keyless entry system functions is by sending radio signals and then searching for a corresponding response signal from the key fob. If the system is able to recognize the signal, it's triggered to unlock the vehicle doors and activate the computer onboard. Some systems have an additional transmitter in the trunk of the car that opens it when you waggle a foot under it.
Each key fob comes with an individual digital identification code, which is assigned by the manufacturer. A specific process of technology called "programming" is used to configure the fob to work with the specific car's system. This involves turning on the ignition of the vehicle several times in a specific sequence, and could require pulling levers or buttons or even removing the fuse.
Once a key fob has been programmed to the car's keyless entry system it transmits its digital identity code, along with an operation code that tells the car what to do (lock in, unlock, or open the trunk). The receiver in the car verifies that the transmitter is who it claims to be using an authentication and encryption procedure. If it's authorized the computer on board unlocks the vehicle and then starts the engine.
A clever criminal could intercept and use the code transmitted between the keyfob and vehicle. This would require the use of a special device that records the transmission and then retransmits it when the system doesn't anticipate it to. To help combat this issue, the majority of keyless entry systems use a method called rolling code, which ensures that each new signal from the transmitter received by the car has a different counter than the previous one.
Batteries
A dead battery is the most common reason for car remotes not to work. If you have an extra key fob, it's a simple and inexpensive fix. The majority of fobs are powered by watch-style batteries, which can be purchased at big-box stores or hardware stores for less than $10. You can find instructions to disassemble your key fob on the internet or in your car's manual.
Be careful not to harm any antennas or circuits in the case once you've removed the battery. They are likely holding the key fob's program to your car's specific model and tampering with them will render it unprogrammable (and probably not work). If you have to move the key fobs, take care. Certain key fobs could have fasteners that can easily be removed and scatter key fob pieces all over your living space.
The case of most key fobs is equipped with a single screwdriver hole. To open it, use a pry tool. However, before you begin by putting the tool around the outer edge of the case like you would when peeling an apple or orange. Don't apply too much pressure, as the case of the key fob is usually constructed of plastic and can crack or break when you apply too excessive force.
Make sure you match the size and type of battery to the key fob when replacing it. Some key fobs have two batteries while others need one. The wrong battery could render your remote keyfob useless.
If the problem persists then you can try it again using your key fob after installing the new battery. If this doesn't work then you'll be required to determine if your fob is experiencing a more complex issue that requires a professional diagnosis. You may have to have the key fob reprogrammed at a dealer or buy an entirely new one.
Buttons
The buttons on your key fob might appear small but they're loaded with electronics. It's not a surprise that they occasionally fail. If your car key button suddenly ceases to function, you can usually fix it yourself.
One of the most common reasons a car key remote doesn't work is that dirt or crud has become lodged between the buttons. To fix this, remove the batteries in a careful manner and scrub each button with the help of a cotton swab which has been dipped into the rubbing alcohol. Make sure to dry the batteries completely before reinstalling them.
It's also possible that the key fob has been damaged somehow, perhaps dropped on concrete or unintentionally scratched by something sharp. If this is the scenario, you can test the functionality of your key fob by using a different one.
The door lock sensor might have been unable to function in your vehicle. This sensor is a small metal part that is attached to the key fob's door lock button. It's not uncommon for it to break due to weather conditions or extended usage. Press your key button several times without locking or unlocking your doors. This will reset the sensor.
If all else fails you can always test the function of a spare by unlocking and locking your doors using it. If the spare key does not work, you might need to contact a 24-hour locksmith who can repair your car keys to make your remote work again.
If your car key button is working, but it's still not locking or unlocking your vehicle, you can try to re-programme your computer system. If you have had the same key fob a time, it might need to be reset every couple of months to continue to work with your vehicle. It's not the most ideal solution, but it's better than buying another remote.