Car Key Repair - How to Fix a Dead Remote
The car remotes are a wonderful convenience for drivers. They can unlock doors, open trunks and even start the car. These remotes are prone to malfunction at the most inconvenient moments.
If you notice that your key fob no longer working, try a few fixes before going to the dealership. These tips could save you money.
Keyless Entry System
You don't need to search for keys in your purse or pockets. Simply walk up to your car, push the button on the keyfob, and the doors will unlock and the engine will begin. It's an easy feature that makes driving a car more comfortable and secure. The keyless entry system, like any other device, may be damaged through repeated use or other causes. If you have problems with your system, you can either go to the dealer or contact an locksmith.
A keyless entry system operates by sending radio signals, and then searching for the response signal from a key fob. If the system can recognize the signal, it's triggered to unlock the car doors and also activate the computer onboard. Certain systems have a second receiver on the car's trunk that opens it automatically when you put your foot on it.
Each key fob is given a unique digital identification code by the manufacturer. A unique process of technology known as "programming" is used to set the fob up with a specific car's system. This involves turning on the ignition of the car several times in a specific sequence, and may also require pulling buttons or levers, or removing fuse.
Once a key fob has been programmed to your car's keyless entry system, it transmits its digital identity code along with a function code that tells the car what to do (lock or unlock the trunk or open the trunk). The receiver on the car confirms the identity of the transmitter through an authentication and encryption process. If it's authorized the onboard computer unlocks vehicle and begins the engine.
There are concerns that a criminal with a sly approach could intercept the code that's transmitted between the key fob and the car. This would require the use of a special device that records the transmission, and then transmits it again in the event that the system doesn't want it to. To combat this, most keyless entry systems rely on the rolling code method, which ensures that each new transmitter signal received by the vehicle has a different counter value than the previous one.
Batteries
The most common cause of a car remote key fob not working is a dead battery. It's an easy and cheap fix in the event that you have a spare key fob on in your possession to replace the previous one with. The majority of fobs are powered by watch-style batteries that can be purchased at big-box stores or hardware stores for less than $10. A quick search of the internet or your vehicle's owner's manual should give you instructions on how to disassemble your key fob and swap out the battery.
Once you've removed the battery, make sure not to disturb any antennas or circuits within the case. If you make a mess of them, the key fob will be unprogrammable and won't function. If you must move the key fobs, be careful. Certain key fobs could have fasteners which can easily pop out and scatter key fob pieces across your living space.
Most key fobs come with one hole that can be used with an screwdriver or similar tool to pop open the case, however it's a good idea to wedge your pry tool around the outside of the case first, just as you would peeling an orange or apple. Do not apply too much pressure, as the case of the key fob is generally constructed of plastic and is susceptible to breaking or cracking when you exert too much force.
When you're ready to replace the battery, be sure to match its size and type to your key fob. Certain fobs require two batteries, whereas others have just one. The incorrect battery could render your remote key fob useless.
If the problem persists it is possible to try again with your fob's key after installing the new battery. If this fails then you'll have to determine if the fob is experiencing a more complex issue that requires a specialist diagnosis. If this is the case, you could need to have it reprogrammed by a dealer, or purchase a new key fob altogether.
Buttons
The buttons on your key fob could appear small, but they are packed with electronic components. It's not a surprise that they're likely to fail from time time. If key repair near me on your car's ignition suddenly ceases to function, you can usually fix it yourself.
The most common reason a car remote key stops working is because dirt or crud has been trapped between the button. To get rid of this, carefully remove both the batteries and clean each button with a cotton swab dipped in alcohol rubbing. Make sure to dry them thoroughly before replacing the batteries.
It's also possible that the key fob was damaged somehow, perhaps dropped on concrete or accidentally scratched by a sharp object. If this is the scenario, you can test the function of your key fob using a different one.
The door lock sensor may have been unable to function in your vehicle. The sensor is a tiny metal piece that is connected 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 a few times without locking or unlocking your doors. This resets the sensor.
If all else fails you can test the capabilities of a spare key by unlocking and locking your doors using it. If the spare key doesn't work, you might need to contact a 24-hour locksmith who offers automobile key repair to get your remote working again.
You can change the settings on your computer if your car key button is working however it cannot lock or unlock your vehicle. If you've had the same key fob a while, it may require reprogramming every few months to continue to work with your vehicle. It's not the most ideal solution, but it's better than having to purchase another remote.