Ford says emphatically no, but the evidence (such as it is) indicates certain similarities. Let’s take a look…
Toyota’s updated press release on the Prius brake issue reads:
Some customers have complained of inconsistent brake feel during slow and steady application of brakes on rough or slick road surfaces when the anti-lock brake system (ABS) is activated in an effort to maintain tire traction. The system, in normal operation, engages and disengages rapidly (many times per second) as the control system senses and reacts to tire slippage. A running production change was introduced last month, improving the ABS system’s response time, as well as the system’s overall sensitivity to tire slippage.
From Toyota’s press conference:
When driving on an icy road, the shift from the electronic brake to the hydraulic brake sometimes takes longer than usual
Consumer Reports’ paraphrase of the Ford technical service bulletin (TSB-09-22-11) reads:
electronic interference might cause the electronic brake-by-wire module to switch itself off temporarily. If that happened, the braking system would revert to a backup conventional hydraulic mode that preserved braking capability, but the pedal will drop over an inch. When the engine is restarted, the electronic braking system would resume…. Ford engineering representatives explained that the software threshold for establishing a fault in the regenerative brake system was set too sensitively, causing the system to transition to conventional brakes when it was not necessary.