Proximity Key Fob System Car

It won t be an issue for every car but particularly in hybrids it might be your problem.

Proximity key fob system car. When you re within the appropriate frequency range the fob interacts through radio waves with your automobile to lock and open doors and even to start the car engine. The majority of new cars have one of the following four types of keys and remotes. Just to be clear when i talk about proximity keys i m referring to a very popular feature on many new cars keyless entry and ignition systems. Any proximity key wakes things up.

A basic key with a security chip that starts the car and locks and unlocks the doors through the key cylinder on. Some cars have a proximity system that is triggered if a transponder car key is within a certain distance of the car and is sometimes called hands free or advanced key. Proximity keys are known by a variety of names. Proximity keys for cars are one of those things.

The key is identified via one of several antennas in the car s bodywork and a radio pulse generator in the key housing. Mercedes benz was the first to introduce this system back in 1998. A proximity key is a little fob that permits a keyless entrance and ignition mechanism in your car. If you re parked next to the entrance of a parking structure where everyone is walking by with proximity keys in their pockets and you happen to leave your car for an extended period then your car battery can drain.

The fob communicates via radio waves with your car to lock and unlock doors and start the engine when within the acceptable range. The problem with current keyless entry systems he says is that they don t actually measure the distance between the key and car but instead assume that the key is close because its radio signal. One of the earliest systems was found on the 1993 chevrolet corvette called the passive keyless entry system and in mercedes benz vehicles from 1998. A proximity key is a small fob that allows for a keyless entry and ignition system.