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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 engine. But, these remotes sometimes stop working at odd times.

Before you visit the dealer, you can try a few quick solutions when your key fob stops working. These tips could save you money.

Keyless Entry System

Instead of having to fiddle around with keys in your purse or pocket Instead of fumbling around with keys in your purse or pocket, you can walk up to your car, push a button on your key fob, and then open the doors and start the engine. It's a simple function that makes driving a car remote key fob repair more comfortable and safe. But just like any device it's possible that the keyless entry system can fail due to repeated use or due to other reasons. If you are having issues with your system, you can either visit the dealer or phone a locksmith.

The way a keyless entry system works 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 opened and the onboard computer activated. Some systems have a second transmitter on the trunk of the car that can be opened when you put your foot beneath it.

Each key fob is equipped with an individual digital identification code, which is given by the manufacturer. A specific process of technology called "programming" is used to configure the fob with a specific car's system. This usually involves turning the ignition of the vehicle repeatedly in a specific sequence, and could include pulling or pushing various levers and buttons or the removal of fuse.

Once a key fob has been programmed to your vehicle's keyless entry system it transmits its digital identity code as well as an operation code that tells the car what to do (lock, unlock, or open the trunk). The receiver in the car verifies that the transmitter is who it claims to be by using an authentication and encryption process. The computer in the car will unlock the vehicle and start the engine if it is authorized.

There are fears that a clever criminal could intercept the code that's transmitted between the key fob and the car. This would require the use of an instrument that records the transmission, and then retransmits it later when the system doesn't expect it to. Most keyless entry systems utilize the rolling code method to combat this. This ensures that every new transmission signal received by a car has a counter value that differs from the previous one.

Batteries

The most common cause of a car remote car key repair key fob not working is the battery is dead. If you have an extra key fob, it's a simple and inexpensive fix. Fortunately, most fobs utilize regular watch-style batteries that can be purchased in hardware stores or big-box retailers for $10 or less. You can find directions to disassemble your key fob on the internet or in your car's manual.

Be careful not to damage any of the circuits or antennas within the case after you've removed the battery. They're likely to be holding the key fob repairs fob's program to your particular car, and messing with them can cause it to become unprogrammable (and probably not work). If you have to move them, do it with care, as some key fobs have fasteners that easily open and scatter key fob parts all over your living room.

Most key fobs have one hole that can be used with the screwdriver or another pry tool to pop open the case, but it's a good idea to put your tool on the outside of the case first, like you were peeling an apple or orange. Do not apply too much pressure, since the case of the fob is usually constructed of plastic and could break or crack if you apply too much force to it.

When you're ready to replace the battery, be sure to match the size and type to your key fob. Certain fobs require two batteries, whereas others have only one. The incorrect battery could make your remote key fob useless.

If the issue continues, you can try again with your fob's key after installing the new battery. If this doesn't work you'll need to determine whether your fob is suffering from an issue that is more complicated and requires professional diagnosis. If this is the case, you could require it to be reset by a dealer or you may need to purchase a new key fob entirely.

Buttons

The buttons on your key fob may be tiny but they're loaded with electronics. It's not a surprise that they malfunction from time to time. The good news is, when your car's key button fails to function, there's typically something you can do to fix it yourself.

One of the most common reasons a car key car repair remote stops working is because dirt or grit has lodged between the buttons. To remove this obstruction remove the batteries and clean each button by using a cotton swab, coated with rubbing alcohol. Make sure to dry them completely before reinstalling the batteries.

It's possible that your key fob is damaged in some way, like being dropped on concrete or accidentally scratched. If that's the case, using another key fob to check its functionality might reveal that it has been damaged and has to be replaced.

Another possibility is that the door lock sensor in your vehicle has stopped working. It's a tiny, metal part that's connected to the door lock button on your key fob and it's not uncommon for this sensor to break during long use or exposure to extreme weather conditions. To reactivate the sensor, simply try pressing your key button a few times without locking or unlocking your doors to reset it.

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 does not work, it could be necessary to find an emergency car key repair locksmith who can provide car key repair to get your remote working again.

If the car key button does work, and it's still not locking or unlocking your vehicle, you may try to re-programme your computer system. Be aware that if you've owned the same key fob for a long time, it's likely to need to be programmed every couple of months to ensure it is working properly with your vehicle. It's not optimal, but it's better than buying another remote.