4 ms·
Can't you stop the car if the key is not present in the car? I guess the thieves could fake it with long distance transmission of the signal, but that would be
by jules 8y ago
Can't you stop the car if the key is not present in the car? I guess the thieves could fake it with long distance transmission of the signal, but that would be more difficult and the further the car drives away from the actual key, the easier if becomes to detect the timing delay.
- blattimwind 8y agoNo. Safety-wise you can't just shut the engine off and lock the steering because the RF connection to some keyfob is wonky. These thefts have been going on for years and they will not stop until key-less go is dropped or changed such that the key requires interaction (like every higher security transponder has for, like, always).
- jules 8y agoObviously you would not use that absurd shutdown procedure. You'd give a warning and tell the driver that the engine is going to shut off in X minutes, and after X minutes you decrease its max speed to 10 km/h for Y minutes before shutting down completely. Cars already do way more dangerous stuff if you assume that arbitrary components fail. It also depends on the reliability. You could also say that you can't just shut the engine off if the electrical contact in the keyhole is wonky.