Car Key Repair - How to Fix a Dead Remote
Car remotes offer wonderful convenience for drivers. They can unlock doors, open trunks, and even start the engine. However, they can stop working at inconvenient times.
Before you go to the dealer, consider some quick solutions in case your key fob isn't working. These tips could save you money.
Keyless Entry System
There's no need to search for keys in your pockets or purse. Just walk up to your vehicle, press the button on the keyfob, and the doors will open and the engine will begin. It's an easy feature that makes driving a car more comfortable and safe. But, like all devices it's possible that the keyless entry system could be damaged by repeated use or because of other reasons. If you're having problems with your system, you can either visit the dealer or phone an locksmith.
The way that a keyless entry system functions is by sending out radio signals, and then searching for a corresponding response from the key fob. If the system detects the signal, the car's doors are not locked and the onboard computer activated. Some systems have a second receiver on the trunk of the car that opens it automatically when you put your foot underneath it.
Each key fob is assigned an individual digital identification number by the manufacturer. A proprietary technical process called "programming" is used to make sure that the fob is set up with the car's specific system. This usually involves turning on the car's ignition multiple times in a particular sequence, and could also involve pushing or pulling different buttons and levers, or removing fuse.
Once the key fob is programmed into your car's keyless system, it transmits a digital identification code as well as a function-code to instruct the car to (lock the trunk, unlock it or open the trunk). The receiver in the car verifies that the transmitter is the person it claims to be using an authentication and encryption process. The onboard computer will unlock the vehicle and start the engine if it's authenticated.
There are key fob repair near me that a clever criminal could intercept the code that's transmitted between the key fob and the car. This would require a special device to record the transmission and then retransmit it when the system isn't expecting it. To prevent this from happening, most keyless entry systems rely on rolling code that ensures that every new signal from the transmitter received by the vehicle has a different counter value than the previous one.
Batteries
The most frequent reason for car remotes key fobs not working is an inoperative battery. If you have an extra key fob, it's a cheap and easy fix. Most fobs are powered by watch-style batteries, which can be purchased at big-box stores or hardware stores for less than $10. A quick search of the internet or in your vehicle's owner's manual will provide directions on how to take apart your key fob and swap out the battery.
Be careful not to harm any antennas or circuits in the case after you've removed the battery. If you mess with them the key fob could become unprogrammable and may not function. If you need to move 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.
Most key fobs come with one hole that allows the screwdriver or another pry tool to open the case, however it's best to put your tool on the outside of the case first, like you were peeling an orange or apple. Be careful not to apply too much pressure as the case of the key fob is usually composed of plastic and is susceptible to breaking or cracking with too much force.
If you're ready to replace the battery, be sure to match the size and style to your key fob. Some key fobs require two batteries, while others have just one. Using the incorrect battery could make your remote key fob useless.
If the issue persists it is possible to try again using your key fob after installing the new battery. If not then you'll need to figure out whether your key fob is suffering from an issue that is more complex and requires a professional diagnosis and repair. If this is the case, you could need to have it reprogrammed by a dealer, or you may need to buy a replacement key fob entirely.
Buttons
The tiny buttons on your key fob are pretty small, and are packed with delicate electronics. It's not a surprise that they'll occasionally fail. The good news is, if your car key button isn't working, there's usually something you can do to fix it yourself.
One of the most frequent reasons that a car key remote doesn't work is that dirt or crud has accumulated between the buttons. To remedy this, take out the batteries carefully and scrub each button with a cotton swab that is dipped in rubbing alcohol. Make sure to dry the batteries completely before reinstalling them.
It's also possible that the key fob has been damaged in some way, possibly dropped on concrete or unintentionally damaged by something sharp. If that's the case, using an alternative key fob to verify its function might reveal that it has been damaged and has to be replaced.
The door lock sensor may have stopped working in your vehicle. This is a tiny metal piece that is attached to the door lock button on your key fob, and it's not common for this sensor to break after prolonged use or exposure to weather conditions. 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 with it. If the spare key doesn't work, it might be necessary to find a 24-hour locksmith that offers automobile key repair in order to make your remote work again.
You can reprogram your computer if your car key button is working but doesn't lock or unlock the vehicle. However, keep in mind that if you've used the same key fob for some time, it's going to need to be programmed every couple of months to ensure it continues to work properly with your vehicle. It's not the most ideal solution, but it's better than having to buy an entirely new remote.