A device may receive an arming signal associated with immobilizing a vehicle. The device may monitor, based on receiving the arming signal, a current associated with an electrical power output from a battery of the vehicle. The device may detect that a measurement of the current satisfies a threshold associated with an ignition component starting an engine of the vehicle. The device may control, based on detecting that the current satisfies the threshold, a bypass circuit to reduce the electrical power output to prevent the ignition component from starting the engine.