There is an answer that works for almost all cars. get a simple chip key cut and coded to your car. By simple-no fancy pushbutton door opening etc. The 'secret" with Pushbutton start is that you push the key head into the starter button and the car will start. being a fully sealed in chip you treat it like your old fashioned brass keys. -This applies to cars Im experienced with being Jap made cars.--Im a car dealer so have a fair few we have done this to