Car Key Repair - How to Fix a Dead Remote
Car remotes provide a great convenience to drivers. They can unlock doors, open trunks, and even start the car. However, they can stop working at odd times.
Before you head to the dealer, try some quick fixes if your key fob stops functioning. These suggestions could save you money.
Keyless Entry System
Instead of having to fiddle around with keys in your purse or pocket instead, walk up to your car, press a button on the key fob and then unlock the doors and start the engine. It's an easy feature that makes driving a car more comfortable and secure. However, just like any other device, the keyless entry system may fail due to repeated use or due to other reasons. If you have problems with your system, you can either go to the dealer or contact an locksmith.
The way that a keyless entry system operates is by sending out radio signals, and then searching for a response signal from the key fob. If the system is able to recognize the signal, the car's doors are not locked and the computer on board is activated. Certain systems include an additional transmitter in the trunk of the car that opens it when you waggle a foot under it.
Each key fob is equipped with an individual digital identification code that is given by the manufacturer. A unique process of technology known as "programming" is used to set the fob up to work with the specific car's system. This typically involves turning the car's ignition several times in a certain sequence, and could also require pulling or pushing various levers and buttons or removing fuses.
Once a key fob has been programmed to the car's keyless entry system, it transmits its digital identification code as well as a function code that instructs the car what to do (lock or unlock the trunk, or open the trunk). The car's receiver checks the authenticity of the transmitter by an authentication and encryption process. If it's authorized, the onboard computer unlocks vehicle and starts 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 will require a device that records the transmission and then retransmits it later when the system doesn't expect it to. The majority of keyless entry systems employ a rolling code method to stop this. This ensures that every new transmitter signal received by a car has a counter that is different from the previous one.
Batteries
The most frequent cause of a car remote key fob not working is a dead battery. It's a cheap and easy fix if you have another key fob at hand to replace the old one with. Fortunately, most fobs utilize regular watch-style batteries that can be purchased at hardware stores or big-box retailers for as little as $10. A quick search on the internet or your vehicle's owner manual should provide instructions on how you can disassemble your key fob and swap out the battery.
Once you've removed the battery, be sure not to disrupt any circuits or antennas inside the case. They're likely to be holding the key fob's programming to your particular car and any disruption to them will make it unprogrammable (and likely to fail). If you have to move them, do so with care, as certain key fobs have fasteners that are able to pop open and scatter key fob parts across your living room.
Most key fobs come with one hole that allows an screwdriver or similar tool to open the case. However, it's best to use your tool to wedge it around the outside of the case first, like you were peeling an apple or orange. Be careful not to apply too much pressure as the case of the key fob is typically made of plastic, and is susceptible to breaking or cracking when you apply too much force.
When you're ready to replace the battery, be sure to match the size and style to your key fob. Some fobs require two batteries, while others have just one. The wrong battery can render your remote key fob useless.
If the problem persists it is possible to try again with your key fob after installing the new battery. If it doesn't work then you'll be required to determine if your fob is experiencing an issue that is more complicated and requires professional diagnosis. broken car key repair could be necessary to have the key fob reset at the dealer or purchase an entirely new one.
Buttons
The little buttons on your key fob are tiny, and filled with delicate electronics. It's not a surprise that they're destined to fail from time to time. The good news is that when your car's key button isn't working, there's usually something you can do to fix it yourself.
One of the most common reasons why a car key remote stops working is due to dirt or dust that has lodged between the buttons. To remove this obstruction remove the batteries and scrub each button by using a cotton swab, that has been dipped in alcohol rubbing. Be sure to dry them thoroughly before installing the batteries.
It's possible that the key fob was harmed somehow, perhaps dropped on concrete or accidentally scratched by something sharp. If this is the case using an alternative key fob to test its functionality may reveal that yours has simply been damaged and needs to be replaced.
Another possibility is that the door sensor for your car's lock has stopped working. This is a tiny metal component that's attached to the door lock button on your key fob and it's not common for this sensor to break after long-term usage or exposure to harsh weather conditions. To reset the sensor simply press your key fob a few times without locking or unlocking your doors to reset it.
If nothing else works, you can always test the functionality of a spare by unlocking and locking your doors using it. If the spare key does not work, it could be necessary to locate an emergency locksmith who can provide car key repair to get your remote operating again.
If your car's key fob is working but still not locking or unlocking your vehicle, try to re-programme your computer system. If you've had the same key fob a time, it may require reprogramming every couple of months to continue working with your vehicle. It's not the ideal situation however it's much better than having to replace your remote entirely.