2010 brake failure - unintended acceleration

[Yaristeve]

Originally Posted by SailDesign

.... and the ABS was also kicked in?... ...The ABS feels like someone is sand-papering your foot, and the lack of immediate braking can feel like acceleration (since you are expecting to slow down...)

I have a 2004 IS300 and this is the exact sensation I get when the ABS (prematurely, in my opinion) kicks in. When I am braking hard at the threshold (or beyond threshold according to my car's ABS sensors), the brake pedal gives a buzzing/grinding sensation and the front end picks up and the car feels like it is accelerating because, as SailDesign says, you're expecting to be slowing down. If I were OP, I would test the ABS in an empty parking lot and see if you can intentionally re-create the condition.

Frankly, I think Toyota's ABS programming is overly conservative (i.e., kicks in too early)...