keylessoption keyless entry remote control car smart key fob replacement for kr55wk48903, kr55wk49622 (pack of 2) keylessoption a quick, easy and affordable way to replace a lost, cracked or worn out keyless entry remote key fob. this smart key will allow you to lock unlock and start your vehicle while this key is in your pocket. this is a new complete smart proximity key. this key will work with vehicles equipped with the push to start button. please enter your vehicle into the parts finder to ensure this key will work with your vehicle. you will to have this key programmed by a dealer or automotive locksmith. reprogramming a car key remote. in order for a car key remote to work in a secure manner, it has to be effectively paired with the receiver unit in your car. this prevents anyone with the same make and model from walking up and using their fob to unlock your car. if your keyless entry remote and your car are no longer on speaking terms, you will have to reprogram your car’s keyless entry system to regain your car key remote functionality. this is often accomplished by getting in your vehicle, closing the door, and inserting the keys in the ignition. rather than starting the vehicle, you will have to turn the key to the run position and back to the locked position several times in a row. if you turn the key to the start position, and the starter engages, you’ve turned it too far.