Can you lock your keys in your car with keyless entry?Smart proximity key fobs (or a key card in some cases, as with Tesla) will, in most situations, not let you lock the “key” in the car. And many brands now have apps that let your phone be the fob. They won't, however, save you from running out of battery or losing the fob on your way back to the locked car.
Can you leave a key fob in your car?A: Leaving the device in the car, or even within the proximity communication range, may be detrimental. Quite often, the transmitter and receiver continue to communicate. This may keep the vehicle's controller area network bus and modules awake. That can kill the car's battery.
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