Tamper Security Systems And Methods For Vehicles

A passive entry/passive start (PEPS) system includes a communication gateway configured to transmit a ping signal based on at least one of a predetermined period and a predetermined transmission power level. The PEPS system includes at least one sensor configured to receive the ping signal and measure a physical characteristic of the ping signal. The PEPS system includes a central module configured to receive the measured physical characteristic of the ping signal, determine a lower threshold and an upper threshold associated with the at least one sensor, and compare the measured physical characteristic of the ping signal to the lower threshold and the upper threshold. In response to determining that the measured physical characteristic is less than the lower threshold and greater than the upper threshold, the central module is further configured to notify a portable device that the at least one sensor has been tampered with.