[agoetz]

Adding a new sensor to monitor the fuses would not be cheap:first off, you have to have signal conditioners for the a/ds that can handle esd transients, and >60 v load shed events. In addition, the existing design probably just has fuse holders physically mounted to the holder packaging, which means now your paying for microcontroller, can transceiver, and pcb. This doesn't include NRE costs including development and testing.

Suddenly your "inexpensive" adc had become a $200 ecu that merely tells the driver wheat part of the car isn't functioning, right before they check the most common cause of the problem.