Contact a certified locksmith to reprogram the key to the vehicle. Old or loose wiring, water damage, or programming issues prevent the car from locking and unlocking. It is a possibility that the key fob itself is defective. Re-check that the key used belongs to that particular car. Every key fob is uniquely programmed and will not work on other vehicles. When in a hurry, it is not unusual for vehicle owners to grab the wrong car key. To start the engine, check the owner’s manual for instructions to start your car when the key fob fails. If the spare fob is not available, use the provided key embedded in the fob to unlock the door. If it is available, use the spare key fob to open the vehicle and start the ignition. Here we discuss a few possible reasons for a car not detecting the key fob: Dead key fob batteryĪ bad battery in the key fob is most commonly the reason for a failure to send signals to the keyless entry system. It is not uncommon for the automobile not to receive signals from the key fob, and it is an issue every car owner faces at some time or another. It is very annoying to see no-key error messages, as it prohibits the user from getting into the car or starting the vehicle using the push-start button. However, there are times when the vehicle fails to detect signals from the key fob. The receiver then performs a specific function such as locking or unlocking the doors or kicking off the engine by pressing the push button.Ĭar key fobs are very convenient as they eliminate the possibility of locking keys in the car. The key fob functions as a short-range radio transmitter that sends coded signals to a receiver in the vehicle. With the advance of technology, most cars now have keyless entry systems, consisting of a key fob transmitter and a receiver fitted inside the vehicle. The latest car models do not use traditional ignition keys to start the vehicle.
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