car key programming 3

https://scarboroughautolocksmithshop.wordcanopy.com/posts/why-having-keys-cut-on-site-matters-for-drivers-on-the-yorkshire-coast

Getting a new car key programmed isn't as simple as just cutting a duplicate at the hardware store. Modern keys have tiny transponder chips that need to sync with your car's immobilizer system, so a locksmith or dealership uses a special tool to pair the chip's code with the vehicle's computer. Without that step, the key might turn the lock but won't let the engine start, leaving you stranded.