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Car Key Repair - How to Fix a Dead Remote

The car remotes are an excellent convenience for drivers. They can unlock doors, open trunks and even start the car. However, they may stop working at odd times.

Before you go to the dealer, try some quick fixes in case your key fob isn't working. These steps could save you money.

Keyless Entry System

Rather than needing to fumble around with keys in your purse or pocket, you can simply walk to your car, press a button on the key fob, then unlock the doors and start the engine. It's a simple feature that makes driving a car more comfortable and safe. But, like all devices, the keyless entry system may break from repeated use or because of other factors. If you are having issues with yours, you may either visit the dealer or phone an locksmith.

Keyless entry systems operate by sending radio signals and then searching for the response signal on a key fob. If the system is able to recognize the signal, the car's doors are opened and remote key repairs the onboard computer is activated. Some systems have another receiver mounted on the trunk of the car, which opens it automatically when you move your foot under it.

Each key fob is given an individual digital identification number by the manufacturer. The fob is programmed with a proprietary process called "programming". This involves turning on the ignition of the car repeatedly in a predetermined sequence. It may also require pulling levers or buttons or removing fuse.

Once the key fob has been programmed into your car's keyless system it transmits a digital identity code and a function code that tell the car what to (lock or unlock the trunk). The receiver on the car verifies the transmitter's identity through an authentication and encryption process. If it is authorized, the onboard computer unlocks vehicle and then starts the engine.

A clever criminal could intercept and use the code transmitted between the keyfob and vehicle. This would require a device to record the transmission then retransmit it in the event that the system doesn't anticipate it. Most keyless entry systems use a rolling code method to combat this. This ensures that every new transmission signal received by a vehicle has a counter value that is different from the previous one.

Batteries

The most common cause of car remotes key fobs not working is a dead battery. If you have an extra key fob it's a cheap and easy fix. Fortunately, the majority of fobs have regular watch-style batteries that can be purchased at big-box stores or hardware retailers for $10 or less. A quick search on 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.

Be cautious not to damage any antennas or circuits in the case after you have removed the battery. If you mess with them the key fob will become unprogrammable and will not work. If you must move them, do it slowly as some key fobs have fasteners that easily open and scatter key fob parts across your living room.

Most key fobs have one hole that can be used with a screwdriver or other pry tool to pop open the case. However, it's a good idea wedge your pry tool around the outside of the case first, like you would peeling an orange or apple. Be careful not to apply too much pressure, as the case of the fob is usually made of plastic and can break or crack if you apply too much pressure to it.

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

After the new battery is in place, try using your key fob again to see if the battery has fixed the issue. If it doesn't it, you'll have to determine whether your key fob is suffering from a more complicated issue that requires a professional diagnosis and repair key fob. If this is the case, you might require it to be reprogrammed by a dealer, or you may need to purchase a new broken key repair fob entirely.

Buttons

The tiny buttons on your key fob are pretty small, and are packed with delicate electronics. It's not surprising that they'll fail from time-to-time. If your car key button suddenly ceases to function, you can usually fix it yourself.

One of the main reasons that a car key remote stops working is due to dirt or dust that has accumulated between the buttons. To clear this up, carefully remove both the batteries and clean each button using a cotton swab that has been that has been dipped in rubbing alcohol. Be sure to dry them completely before installing the batteries.

It's also possible that the key fob was damaged by accident, such as being dropped on concrete, or perhaps damaged by something sharp. If this is the case, you can test the functionality of your key fob by using a different one.

The door lock sensor might have stopped working in your car. It's a tiny metal piece that is connected to the key fob's door lock button. It's not unusual 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 will reset the sensor.

If all else fails, you can test the functionality of an extra key by trying to unlock and lock your doors with it. If the spare key does not work, you may need to call a locksmith 24 hours a day who can repair key fob your car keys to get your remote working again.

If your car's key fob is working but still not locking or unlocking your vehicle, you may try to re-programme your computer system. If you've had the same key fob for a time, it might need to be reset every few months in order to continue to work with your vehicle. It's not the most ideal solution, but it's better than having to buy a new remote.