A vehicle disablement device disables a vehicle if it a payment has not
been received prior to a payment due deadline. The vehicle can also be
disabled if it is determined that the vehicle disablement device is being
tampered with. Disablement of the vehicle occurs by transmission of a
wireless signal from a vehicle disablement device to a relay in a power
control panel. The disablement can also occur by transmission of a second
wireless signal from a tamper disabler (or a tamper receiver) to a relay
in the power control panel. The critical system of the vehicle that can
be disabled by the vehicle disablement device can be the same or a
different critical system as that which can be disabled by the tamper
disabler (or a tamper receiver).