Originally Posted by darkstar585
I want to know how they stopped the brakes working!?!
My best guess would be to overload the ABS module so it prevents fluid getting to the callipers...but I didn't think that was possible as most ABS systems can only operate one calliper at a time and alternate to each wheel...never all four at once.
Modern car ABS systems are solenoid bypass. The brake fluid will recirculate through the system instead of going to the caliper or wheel cylinder. These solenoids can oscillate at a very high rate of speed, essentially controlling how much braking force. So what they did is made the solenoids oscillate at the highest speed, preventing any braking. Auto makers went to this system because of traction control, and the pedal does not make such jarring vibrations when you activate it like it used to.
And to those saying they'll never get a Prius... these systems exist on all newer cars. Fortunately you need direct physical access to the CAN multiplexing network to do what they were doing. Which usually means tearing apart the dash as shown. While you can control some things with the OBD2 interface, it has checks to go through. Like it won't go through an ABS check (used for diagnostics) while the car is in drive. That is also mostly a physical connection, and your tampering abilities are limited.
So this really isn't anything to worry about at all for somebody looking to buy a newer car. Nobody can interface with it wirelessly or anything. It has to be a physical connection.