A warning system for finding lost keys in motor vehicles.

Abstract

This invention is a method of alerting users to find the lost key in case one of the keys (1) of their motor vehicle (1) is lost, when the system activation button (2) on the user's existing car key (1) is activated, the in-key frequency receiver / transmitter module (5) inside the car keys (1) is activated, the user's car key (1) sends an audible signal when the system activation button (2) is pressed, the user presses the system activation button (2) on the car key (1) in their hand, the in-key frequency receiver / transmitter module (5) starts searching for the signal of the lost car key (1),The process involves the key receiving and evaluating the sound signal sent from the lost car key (1) via the key-mounted frequency receiver / transmitter module (5) and generating an audible alert via the speaker (3) when it detects the signal from the car key (1) in the user's hand.